{"id":8515,"date":"2024-06-05T20:01:04","date_gmt":"2024-06-05T12:01:04","guid":{"rendered":""},"modified":"2024-06-05T20:01:04","modified_gmt":"2024-06-05T12:01:04","slug":"\u7b2c\u4e8c\u90e8\u5206 \u97f3\u9891\u538b\u7f29\u7f16\u7801\u662f\u4ec0\u4e48_\u97f3\u9891\u538b\u7f29","status":"publish","type":"post","link":"https:\/\/mushiming.com\/8515.html","title":{"rendered":"\u7b2c\u4e8c\u90e8\u5206 \u97f3\u9891\u538b\u7f29\u7f16\u7801\u662f\u4ec0\u4e48_\u97f3\u9891\u538b\u7f29"},"content":{"rendered":"<\/p>\n

\u7b2c\u4e8c\u90e8\u5206<\/span> <\/strong>    \u97f3\u9891\u538b\u7f29\u7f16\u7801<\/span> <\/span> <\/strong> <\/p>\n

\u4e00\uff0e\u6709\u635f<\/span> <\/strong> (<\/span> <\/strong> lossy<\/span> <\/strong> )\/\u65e0\u635f<\/span> (<\/span> <\/strong> lossless<\/span> <\/strong> )\/\u672a\u538b\u7f29<\/span> (<\/span> <\/strong> uncompressed<\/span> <\/strong> )\u97f3\u9891\u683c\u5f0f<\/span> <\/span> <\/strong> <\/p>\n

\u672a\u538b\u7f29\u97f3\u9891\u662f\u4e00\u79cd\u6ca1\u7ecf\u8fc7\u4efb\u4f55\u538b\u7f29\u7684\u7b80\u5355\u97f3\u9891\u3002\u672a\u538b\u7f29\u97f3\u9891\u901a\u5e38\u7528\u4e8e\u5f71\u97f3\u6587\u4ef6\u7684\u7684<\/span> PCM\u6216<\/span> WAV\u97f3\u8f68\u3002<\/span> <\/span> <\/p>\n

\u65e0\u635f\u538b\u7f29\u97f3\u9891\u662f\u5bf9\u672a\u538b\u7f29\u97f3\u9891\u8fdb\u884c\u6ca1\u6709\u4efb\u4f55\u4fe1\u606f<\/span> \/\u8d28\u91cf\u635f\u5931\u7684\u538b\u7f29\u673a\u5236\u3002\u65e0\u635f\u538b\u7f29\u97f3\u9891\u4e00\u822c\u4e0d\u4f7f\u7528\u4e8e\u5f71\u97f3\u4e16\u754c\uff0c\u4f46\u662f\u5b58\u5728\u7684\u683c\u5f0f\u6709\u65e0\u635f<\/span> WMA\u6216<\/span> Matroska\u91cc\u7684<\/span> FLAC\u3002<\/span> <\/span> <\/p>\n

\u6709\u635f\u538b\u7f29\u97f3\u9891\u5c1d\u8bd5\u5c3d\u53ef\u80fd\u591a\u5f97\u4ece\u539f\u6587\u4ef6\u5220\u9664\u6ca1\u6709\u591a\u5927\u5f71\u54cd\u7684\u6570\u636e\uff0c\u6709\u76ee\u7684\u5730\u5236\u6210\u6bd4\u539f\u6587\u4ef6\u5c0f\u591a\u7684\u4f46\u97f3\u8d28\u5374\u57fa\u672c\u4e00\u6837\u3002\u6709\u635f\u538b\u7f29\u97f3\u9891\u666e\u904d\u6d41\u884c\u4e8e\u5f71\u97f3\u6587\u4ef6\uff0c\u5305\u62ec<\/span> AC3, DTS, AAC, MPEG-1\/2\/3, Vorbis, \u548c<\/span> Real Audio.<\/span> <\/p>\n

\u6211\u4eec\u4e5f\u6765\u8ba8\u8bba\u4e0b\u65e0\u635f<\/span> \/\u6709\u635f\u538b\u7f29\u8fc7\u7a0b\u3002\u53ea\u8981\u4f60\u8f6c\u6362\u6210\u4e00\u79cd\u6709\u635f\u538b\u7f29\u97f3\u9891\u683c\u5f0f\uff08\u4f8b\u5982<\/span> wav \u8f6c<\/span> MP3\uff09\uff0c\u8d28\u91cf\u4e0a\u6709\u635f\u5931\uff0c\u90a3\u4e48\u5b83\u5c31\u662f\u6709\u635f\u538b\u7f29\u3002\u4ece\u6709\u635f\u538b\u7f29\u97f3\u9891\u683c\u5f0f\u8f6c\u6362\u6210\u53e6\u4e00\u6709\u635f\u538b\u7f29\u97f3\u9891\u683c\u5f0f\uff08\u4f8b\u5982<\/span> Mp3\u8f6c<\/span> AAC\uff09\u66f4\u69fd\u7cd5\uff0c\u56e0\u4e3a\u5b83\u4e0d\u4ec5\u4f1a\u5f15\u5165\u539f\u6587\u4ef6\u5b58\u5728\u7684\u635f\u5931\uff0c\u800c\u4e14\u7b2c<\/span> 2\u6b21\u7f16\u7801\u4e5f\u4f1a\u6709\u635f\u5931\u3002<\/span> <\/span> <\/p>\n

\u4e8c\u3001\u8bed\u97f3<\/span> <\/strong> (Voice)\u7f16\u7801\u548c\u97f3\u9891<\/span> (Audio)\u7f16\u7801<\/span> <\/span> <\/strong> <\/p>\n

\u8bed\u97f3\u7f16\u7801\u4e3b\u8981\u662f\u9488\u5bf9\u8bed\u97f3\u901a\u4fe1\u7cfb\u7edf\u4e2d\u7684\u7f16\u7801\u65b9\u6848\uff0c\u5e94\u7528\u5728\u6709\u7ebf\u6216\u65e0\u7ebf\u901a\u4fe1\u4e2d\uff1b\u97f3\u9891\u7f16\u7801\u662f\u9488\u5bf9\u97f3\u4e50\u7684\u7f16\u7801\u65b9\u6848\uff0c\u4e3b\u8981\u7528\u6765\u66f4\u65b9\u4fbf\u5730\u5b9e\u73b0\u5bf9\u97f3\u4e50\u6587\u4ef6\u8fdb\u884c\u7f51\u7edc\u4f20\u8f93\u548c\u5b58\u50a8\u3002\u4e24\u8005\u7684\u5dee\u522b\u4e00\u65b9\u9762\u662f\u9891\u5e26\u4e0d\u540c\uff0c\u53e6\u4e00\u65b9\u9762\u662f\u538b\u7f29\u8981\u6c42\u4e0d\u4e00\u6837\uff0c\u97f3\u4e50\u8981\u6c42\u5177\u6709\u9ad8\u4fdd\u771f\u5ea6\u548c\u7acb\u4f53\u611f\u7b49\u8981\u6c42\u3002 \u97f3\u9891\u7f16\u7801\u6700\u5e38\u89c1\u7684\u662f<\/span> MPEG\u7684\u97f3\u9891\u7f16\u7801\u3002<\/span> <\/span> <\/p>\n

\u8bed\u97f3\u7684\u7f16\u7801\u6280\u672f\u901a\u5e38\u5206\u4e3a\u4e09\u7c7b\uff1a\u6ce2\u5f62\u7f16\u7801<\/strong> \u3001\u53c2\u91cf\u7f16\u7801<\/strong> \u548c\u6df7\u5408\u7f16\u7801<\/strong> \u3002\u5176\u4e2d\uff0c\u6ce2\u5f62\u7f16\u7801\u548c\u53c2\u91cf\u7f16\u7801\u662f\u4e24\u79cd\u57fa\u672c\u7c7b\u578b\u3002<\/span> <\/span> <\/p>\n

    \u6ce2\u5f62\u7f16\u7801<\/span> <\/strong> \u662f\u5c06\u65f6\u95f4\u57df\u4fe1\u53f7\u76f4\u63a5\u53d8\u6362\u4e3a\u6570\u5b57\u4ee3\u7801\uff0c\u529b\u56fe\u4f7f\u91cd\u5efa\u8bed\u97f3\u6ce2\u5f62\u4fdd\u6301\u539f\u8bed\u97f3\u4fe1\u53f7\u7684\u6ce2\u5f62\u5f62\u72b6\u3002\u6ce2\u5f62\u7f16\u7801\u7684\u57fa\u672c\u539f\u7406\u662f\u5728\u65f6\u95f4\u8f74\u4e0a\u5bf9\u6a21\u62df\u8bed\u97f3\u6309\u4e00\u5b9a\u7684\u901f\u7387\u62bd\u6837\uff0c\u7136\u540e\u5c06\u5e45\u5ea6\u6837\u672c\u5206\u5c42\u91cf\u5316\uff0c\u5e76\u7528\u4ee3\u7801\u8868\u793a\u3002\u89e3\u7801\u662f\u5176\u53cd\u8fc7\u7a0b\uff0c\u5c06\u6536\u5230\u7684\u6570\u5b57\u5e8f\u5217\u7ecf\u8fc7\u89e3\u7801\u548c\u6ee4\u6ce2\u6062\u590d\u6210\u6a21\u62df\u4fe1\u53f7\u3002\u5b83\u5177\u6709\u9002\u5e94\u80fd\u529b\u5f3a\u3001\u8bed\u97f3\u8d28\u91cf\u597d\u7b49\u4f18\u70b9\uff0c\u4f46\u6240\u7528\u7684\u7f16\u7801\u901f\u7387\u9ad8\uff0c\u5728\u5bf9\u4fe1\u53f7\u5e26\u5bbd\u8981\u6c42\u4e0d\u592a\u4e25\u683c\u7684\u901a\u4fe1\u4e2d\u5f97\u5230\u5e94\u7528\uff0c\u800c\u5bf9\u9891\u7387\u8d44\u6e90\u76f8\u5bf9\u7d27\u5f20\u7684\u79fb\u52a8\u901a\u4fe1\u6765\u8bf4\uff0c\u8fd9\u79cd\u7f16\u7801\u65b9\u5f0f\u663e\u7136\u4e0d\u5408\u9002\u3002<\/span> <\/span> <\/p>\n

    \u8109\u51b2\u7f16\u7801\u8c03\u5236\uff08<\/span> PCM\uff09\u548c\u589e\u91cf\u8c03\u5236\uff08\u25b3<\/span> M\uff09\uff0c\u4ee5\u53ca\u5b83\u4eec\u7684\u5404\u79cd\u6539\u8fdb\u578b\u81ea\u9002\u5e94\u589e\u91cf\u8c03\u5236\uff08<\/span> ADM\uff09\uff0c\u81ea\u9002\u5e94\u5dee\u5206\u7f16\u7801\uff08<\/span> ADPCM\uff09\u7b49\uff0c\u90fd\u5c5e\u4e8e\u6ce2\u5f62\u7f16\u7801\u6280\u672f\u3002\u5b83\u4eec\u5206\u522b\u5728<\/span> 64\u4ee5\u53ca<\/span> 16Kbit\/s\u7684\u901f\u7387\u4e0a\uff0c\u80fd\u7ed9\u51fa\u9ad8\u7684\u7f16\u7801\u8d28\u91cf\uff0c\u5f53\u901f\u7387\u8fdb\u4e00\u6b65\u4e0b\u964d\u65f6\uff0c\u5176\u6027\u80fd\u4f1a\u4e0b\u964d\u8f83\u5feb\u3002<\/span> <\/span> <\/p>\n

    \u53c2\u91cf\u7f16\u7801<\/span> <\/strong> \u53c8\u79f0\u4e3a\u58f0\u6e90\u7f16\u7801\uff0c\u662f\u5c06\u4fe1\u6e90\u4fe1\u53f7\u5728\u9891\u7387\u57df\u6216\u5176\u5b83\u6b63\u4ea4\u53d8\u6362\u57df\u63d0\u53d6\u7279\u5f81\u53c2\u91cf\uff0c\u5e76\u5c06\u5176\u53d8\u6362\u6210\u6570\u5b57\u4ee3\u7801\u8fdb\u884c\u4f20\u8f93\u3002\u5177\u4f53\u8bf4\uff0c\u53c2\u91cf\u7f16\u7801\u662f\u901a\u8fc7\u5bf9\u8bed\u97f3\u4fe1\u53f7\u7279\u5f81\u53c2\u6570\u7684\u63d0\u53d6\u548c\u7f16\u7801\uff0c\u529b\u56fe\u4f7f\u91cd\u5efa\u8bed\u97f3\u4fe1\u53f7\u5177\u6709\u5c3d\u53ef\u80fd\u9ad8\u7684\u53ef\u9760\u6027\uff0c\u5373\u4fdd\u6301\u539f\u8bed\u97f3\u7684\u8bed\u610f\uff0c\u4f46\u91cd\u5efa\u4fe1\u53f7\u7684\u6ce2\u5f62\u540c\u539f\u8bed\u97f3\u4fe1\u53f7\u7684\u6ce2\u5f62\u53ef\u80fd\u4f1a\u6709\u76f8\u5f53\u5927\u7684\u5dee\u522b\u3002\u8fd9\u79cd\u7f16\u7801\u6280\u672f\u53ef\u5b9e\u73b0\u4f4e\u901f\u7387\u8bed\u97f3\u7f16\u7801\uff0c\u6bd4\u7279\u7387\u53ef\u538b\u7f29\u5230<\/span> 2Kbit\/s-4.8Kbit\/s \uff0c\u751a\u81f3\u66f4\u4f4e\uff0c\u4f46\u8bed\u97f3\u8d28\u91cf\u53ea\u80fd\u8fbe\u5230\u4e2d\u7b49\uff0c\u7279\u522b\u662f\u81ea\u7136\u5ea6\u8f83\u4f4e\uff0c\u8fde\u719f\u4eba\u90fd\u4e0d\u4e00\u5b9a\u80fd\u542c\u51fa\u8bb2\u8bdd\u4eba\u662f\u8c01\u3002\u7ebf\u6027\u9884\u6d4b\u7f16\u7801\uff08<\/span> LPC \uff09\u53ca\u5176\u5b83\u5404\u79cd\u6539\u8fdb\u578b\u90fd\u5c5e\u4e8e\u53c2\u91cf\u7f16\u7801\u3002<\/span> <\/span> <\/p>\n

\u6df7\u5408\u7f16\u7801<\/span> <\/strong> \u5c06\u6ce2\u5f62\u7f16\u7801\u548c\u53c2\u91cf\u7f16\u7801\u7ec4\u5408\u8d77\u6765\uff0c\u514b\u670d\u4e86\u539f\u6709\u6ce2\u5f62\u7f16\u7801\u548c\u53c2\u91cf\u7f16\u7801\u7684\u5f31\u70b9\uff0c\u7ed3\u5408\u5404\u81ea\u7684\u957f\u5904\uff0c\u529b\u56fe\u4fdd\u6301\u6ce2\u5f62\u7f16\u7801\u7684\u9ad8\u8d28\u91cf\u548c\u53c2\u91cf\u7f16\u7801\u7684\u4f4e\u901f\u7387\uff0c\u5728<\/span> 4-16Kbit\/s\u901f\u7387\u4e0a\u80fd\u591f\u5f97\u5230\u9ad8\u8d28\u91cf\u7684\u5408\u6210\u8bed\u97f3\u3002\u591a\u8109\u51b2\u6fc0\u52b1\u7ebf\u6027\u9884\u6d4b\u7f16\u7801\uff08<\/span> MPLPC \uff09\uff0c\u89c4\u5212\u8109\u51b2\u6fc0\u52b1\u7ebf\u6027\u9884\u6d4b\u7f16\u7801\uff08<\/span> KPELPC\uff09\uff0c\u7801\u672c\u6fc0\u52b1\u7ebf\u6027\u9884\u6d4b\u7f16\u7801\uff08<\/span> CELP\uff09\u7b49\u90fd\u662f\u5c5e\u4e8e\u6df7\u5408\u7f16\u7801\u6280\u672f\u3002\u5f88\u663e\u7136\uff0c\u6df7\u5408\u7f16\u7801\u662f\u9002\u5408\u4e8e\u6570\u5b57\u79fb\u52a8\u901a\u4fe1\u7684\u8bed\u97f3\u7f16\u7801\u6280\u672f\u3002<\/span> <\/span> <\/p>\n

\u4e09\u3001\u65e0\u7ebf\u901a\u4fe1\u4e2d\u5e38\u89c1\u8bed\u97f3\u7f16\u7801<\/span> <\/strong> <\/strong> <\/p>\n

PHS\u4e3a<\/span> 32kbit\/s\u7684<\/span> ADPCM\u7f16\u7801\uff0c<\/span> GSM\u4e3a<\/span> 13kbit\/s\u7684\u89c4\u5219\u8109\u51b2\u6fc0\u52b1\u957f\u671f\u9884\u6d4b<\/span> (RPE-LTP)\u7f16\u7801\uff0c<\/span> WCDMA\u4f7f\u7528\u7684\u662f\u81ea\u9002\u5e94\u591a\u901f\u7387\u7f16\u7801<\/span> (AMR)\uff0c<\/span> cdma2000\u4f7f\u7528\u7684\u662f\u53ef\u53d8\u901f\u7387\u7f16\u7801<\/span> (IS-773\uff0c<\/span> IS-127)\u3002<\/span> <\/span> <\/p>\n

1\u3001<\/span> AMR<\/span> <\/strong> \u7f16\u7801<\/span> <\/strong> <\/strong> <\/p>\n

\uff08\u4ecb\u7ecd\u5b83\u7684\u539f\u56e0\u662f\u56e0\u4e3a\u624b\u673a\u4e2d\u6709\u4f7f\u7528<\/span> <\/strong> AMR<\/span> <\/strong> \u94c3\u58f0\uff09\u3002<\/span> <\/strong> \u5728<\/span> 3G\u591a\u5a92\u4f53\u901a\u4fe1\u7684\u53d1\u5c55\u8fc7\u7a0b\u4e2d\uff0c\u97f3\u89c6\u9891\u7f16\u7801\u6709\u4e86\u5f88\u5927\u7684\u53d1\u5c55\u3002<\/span> 1999\u5e74\u521d<\/span> ,3GPP\u91c7\u7eb3\u4e86\u7531\u7231\u7acb\u4fe1\u3001\u8bfa\u57fa\u4e9a\u3001\u897f\u95e8\u5b50\u63d0\u51fa\u7684\u81ea\u9002\u5e94\u591a\u901f\u7387<\/span> (AMR)\u6807\u51c6\u4f5c\u4e3a\u7b2c\u4e09\u4ee3\u79fb\u52a8\u901a\u4fe1\u4e2d\u8bed\u97f3\u7f16\u89e3\u7801\u5668\u7684\u6807\u51c6\u3002<\/span> AMR\u58f0\u7801\u5668\u91c7\u7528\u4ee3\u6570\u7801\u672c\u6fc0\u52b1\u7ebf\u6027\u9884\u6d4b<\/span> (ACELP:Algebraic Code Excited Linear Prediction)\u7f16\u7801\u65b9\u5f0f\u3002<\/span> AMR\u6807\u51c6\u9488\u5bf9\u4e0d\u540c\u7684\u5e94\u7528\uff0c\u5206\u522b\u63d0\u51fa\u4e86<\/span> AMR\uff0d<\/span> NB\uff0c<\/span> AMR-WB\u548c<\/span> AMR-WB+\u4e09\u79cd\u4e0d\u540c\u7684\u534f\u8bae\u3002<\/span> AMR-NB\u5e94\u7528\u4e8e\u7a84\u5e26\uff0c\u800c<\/span> AMR-WB\u548c<\/span> AMR-WB+\u5219\u5e94\u7528\u4e8e\u5bbd\u5e26\u901a\u4fe1\u4e2d\u3002<\/span> <\/span> <\/p>\n

    \u5bf9\u4e8e\u624b\u673a\u94c3\u58f0\uff0c<\/span> AMR\uff0d<\/span> NB\u5bf9\u5e94\u7684\u94c3\u58f0\u6587\u4ef6\u6269\u5c55\u540d\u662f<\/span> .amr\uff0c<\/span> AMR-WB\u5bf9\u5e94\u94c3\u58f0\u6587\u4ef6\u6269\u5c55\u540d\u662f<\/span> .awb\u3002\u5b83\u4eec\u4e0d\u662f\u97f3\u4e50\uff0c\u800c\u662f\u5f55\u97f3\u5f97\u5230\u7684\u539f\u58f0\u3002<\/span> <\/span> <\/p>\n

2\u3001<\/span> ADPCM\u7f16\u7801<\/span> <\/span> <\/strong> <\/p>\n

\u81ea\u9002\u5e94\u5dee\u5206\u8109\u7801\u8c03\u5236<\/span> (ADPCM)\u662f\u5728\u5dee\u5206\u8109\u7801\u8c03\u5236<\/span> (DPCM)\u7684\u57fa\u7840\u4e0a\u53d1\u5c55\u8d77\u6765\u7684\u3002<\/span> DPCM\u6839\u636e\u4fe1\u53f7\u7684\u8fc7\u53bb\u6837\u503c\u9884\u6d4b\u4e0b\u4e00\u4e2a\u6837\u503c\uff0c\u5e76\u5c06\u9884\u6d4b\u8bef\u5dee\u52a0\u4ee5\u91cf\u5316\u3001\u7f16\u7801\uff0c\u800c\u540e\u8fdb\u884c\u4f20\u8f93\uff0c\u7531\u4e8e\u9884\u6d4b\u8bef\u5dee\u7684\u5e45\u5ea6\u53d8\u5316\u8303\u56f4\u5c0f\u4e8e\u539f\u4fe1\u53f7\u7684\u5e45\u5ea6\u53d8\u5316\u8303\u56f4\uff0c\u56e0\u6b64\u5728\u76f8\u540c\u91cf\u5316\u566a\u58f0\u6761\u4ef6\u4e0b\uff0c<\/span> DPCM\u7684\u91cf\u5316\u6bd4\u7279\u6570\u5c0f\u4e8e<\/span> PCM\uff0c\u4ece\u800c\u8fbe\u5230\u8bed\u97f3\u538b\u7f29\u7f16\u7801\u7684\u76ee\u7684\u3002<\/span> ADPCM\u4e0e<\/span> DPCM\u6bd4\u8f83\uff0c\u4e24\u8005\u4e3b\u8981\u533a\u522b\u5728\u4e8e<\/span> ADPCM\u4e2d\u7684\u91cf\u5316\u5668\u548c\u9884\u6d4b\u5668\u91c7\u7528\u4e86\u81ea\u9002\u5e94\u63a7\u5236\u3002\u540c\u65f6\uff0c\u5728\u8bd1\u7801\u5668\u4e2d\u591a\u4e86\u4e00\u4e2a\u540c\u6b65\u7f16\u7801\u8c03\u6574\uff0c\u5176\u4f5c\u7528\u662f\u4e3a\u4e86\u5728\u540c\u6b65\u7ea7\u8fde\u65f6\u4e0d\u4ea7\u751f\u8bef\u5dee\u79ef\u7d2f\u3002<\/span> <\/span> <\/p>\n

20\u4e16\u7eaa<\/span> 80\u5e74\u4ee3\u4ee5\u6765\uff0c<\/span> 32kb\uff0f<\/span> s\u7684<\/span> ADPCM\u6280\u672f\u5df2\u65e5\u8d8b\u6210\u719f\uff0c\u5e76\u63a5\u8fd1<\/span> PCM\u7684\u8d28\u91cf\uff0c\u4f46\u5374\u8282\u7701\u4e00\u534a\u7684\u4fe1\u9053\u5bb9\u91cf\uff0c\u56e0\u800c\u53d7\u5230\u91cd\u89c6\u3002<\/span> 1984\u5e74<\/span> CCITT\u63d0\u51fa<\/span> G721\u5efa\u8bae<\/span> ,\u91c7\u7528\u52a8\u6001\u9501\u5b9a\u91cf\u5316\u5668\uff0c\u8fd9\u662f\u4e00\u79cd\u5177\u6709\u81ea\u9002\u5e94\u901f\u5ea6\u63a7\u5236<\/span> 32kb\uff0f<\/span> s\u7684\u81ea\u9002\u5e94\u91cf\u5316\u5668\uff0c\u5e76\u5c06\u5b83\u4f5c\u4e3a\u56fd\u9645\u6807\u51c6\u5316\u7684\u8bed\u97f3\u7f16\u7801\u65b9\u6cd5\u3002<\/span> 1986\u5e74\u53c8\u5bf9<\/span> G721\u5efa\u8bae\u8fdb\u884c\u4e86\u4fee\u6b63\uff0c\u79f0<\/span> G726\u5efa\u8bae\u3002<\/span> <\/span> <\/p>\n

ADPCM\u4e0d\u9002\u5408\u4f5c\u97f3\u4e50\u7684\u7f16\u7801\uff0c\u5e38\u7528\u4e8e\u5f55\u97f3\u3002\u96c5\u9a6c\u54c8\u7684<\/span> MMF\u94c3\u58f0\u7528\u5230<\/span> MIDI+PCM\/ADPCM\u6280\u672f\uff0c\u5176\u4e2d<\/span> PCM\u548c<\/span> ADPCM\u5c31\u662f\u6a21\u62df\u97f3\u6548\uff0c\u5305\u62ec\u4eba\u58f0\u3002<\/span> <\/span> <\/p>\n

\u56db\u3001\u5404\u79cd\u4e3b\u6d41\u97f3\u9891\u7f16\u7801\uff08\u6216\u683c\u5f0f\uff09\u7684\u4ecb\u7ecd<\/span> <\/strong> <\/strong> <\/p>\n

1\u3001<\/span> PCM\u7f16\u7801<\/span> <\/span> <\/strong> <\/p>\n

\u3000\u3000<\/span> PCM\uff08<\/span> Pulse Code Modulation\uff09<\/span> ,\u5373\u8109\u51b2\u7f16\u7801\u8c03\u5236\uff0c\u6307\u6a21\u62df\u97f3\u9891\u4fe1\u53f7\u53ea\u7ecf\u8fc7\u91c7\u6837\u3001\u6a21\u6570\u8f6c\u6362\u76f4\u63a5\u5f62\u6210\u7684\u4e8c\u8fdb\u5236\u5e8f\u5217\uff0c\u672a\u7ecf\u8fc7\u4efb\u4f55\u7f16\u7801\u548c\u538b\u7f29\u5904\u7406\u3002<\/span> <\/span> PCM\u7f16\u7801\u7684\u6700\u5927\u7684\u4f18\u70b9\u5c31\u662f\u97f3\u8d28\u597d\uff0c\u6700\u5927\u7684\u7f3a\u70b9\u5c31\u662f\u4f53\u79ef\u5927\u3002\u5728\u8ba1\u7b97\u673a\u5e94\u7528\u4e2d\uff0c\u80fd\u591f\u8fbe\u5230\u6700\u9ad8\u4fdd\u771f\u6c34\u5e73\u7684\u5c31\u662f<\/span> PCM\u7f16\u7801\uff0c\u5728<\/span> CD\u3001<\/span> DVD\u4ee5\u53ca\u6211\u4eec\u5e38\u89c1\u7684<\/span> WAV\u6587\u4ef6\u4e2d\u5747\u6709\u5e94\u7528\u3002<\/span> <\/span> <\/p>\n

2\u3001<\/span> WAVE\u683c\u5f0f\uff08\u94c3\u58f0\uff09<\/span> <\/span> <\/strong> <\/p>\n

\u3000\u3000\u8fd9\u662f\u4e00\u79cd\u53e4\u8001\u7684\u97f3\u9891\u6587\u4ef6\u683c\u5f0f\uff0c\u7531\u5fae\u8f6f\u5f00\u53d1\u3002<\/span> WAV\u5bf9\u97f3\u9891\u6d41\u7684\u7f16\u7801\u6ca1\u6709\u786c\u6027\u89c4\u5b9a\uff0c\u9664\u4e86<\/span> PCM\u4e4b\u5916\uff0c\u8fd8\u6709\u51e0\u4e4e\u6240\u6709\u652f\u6301<\/span> ACM\u89c4\u8303\u7684\u7f16\u7801\u90fd\u53ef\u4ee5\u4e3a<\/span> WAV\u7684\u97f3\u9891\u6d41\u8fdb\u884c\u7f16\u7801\u3002<\/span> WAV\u53ef\u4ee5\u4f7f\u7528\u591a\u79cd\u97f3\u9891\u7f16\u7801\u6765\u538b\u7f29\u5176\u97f3\u9891\u6d41\uff0c\u4e0d\u8fc7\u6211\u4eec\u5e38\u89c1\u7684\u90fd\u662f\u97f3\u9891\u6d41\u88ab<\/span> PCM\u7f16\u7801\u5904\u7406\u7684<\/span> WAV\uff0c\u4f46\u8fd9\u4e0d\u8868\u793a<\/span> WAV\u53ea\u80fd\u4f7f\u7528<\/span> PCM\u7f16\u7801\uff0c<\/span> MP3\u7f16\u7801\u540c\u6837\u4e5f\u53ef\u4ee5\u8fd0\u7528\u5728<\/span> WAV\u4e2d\uff0c\u53ea\u8981\u5b89\u88c5\u597d\u4e86\u76f8\u5e94\u7684<\/span> Decode\uff0c\u5c31\u53ef\u4ee5\u6b23\u8d4f\u8fd9\u4e9b<\/span> WAV\u4e86\u3002<\/span> <\/span> <\/p>\n

\u5728<\/span> Windows\u5e73\u53f0\u4e0b\uff0c\u57fa\u4e8e<\/span> PCM\u7f16\u7801\u7684<\/span> WAV\u662f\u88ab\u652f\u6301\u5f97\u6700\u597d\u7684\u97f3\u9891\u683c\u5f0f\uff0c\u6240\u6709\u97f3\u9891\u8f6f\u4ef6\u90fd\u80fd\u5b8c\u7f8e\u652f\u6301\uff0c\u7531\u4e8e\u672c\u8eab\u53ef\u4ee5\u8fbe\u5230\u8f83\u9ad8\u7684\u97f3\u8d28\u7684\u8981\u6c42\uff0c\u56e0\u6b64\uff0c<\/span> WAV\u4e5f\u662f\u97f3\u4e50\u7f16\u8f91\u521b\u4f5c\u7684\u9996\u9009\u683c\u5f0f\uff0c\u9002\u5408\u4fdd\u5b58\u97f3\u4e50\u7d20\u6750\u3002\u56e0\u6b64\uff0c\u57fa\u4e8e<\/span> PCM\u7f16\u7801\u7684<\/span> WAV\u88ab\u4f5c\u4e3a\u4e86\u4e00\u79cd\u4e2d\u4ecb\u7684\u683c\u5f0f\uff0c\u5e38\u5e38\u4f7f\u7528\u5728\u5176\u4ed6\u7f16\u7801\u7684\u76f8\u4e92\u8f6c\u6362\u4e4b\u4e2d\uff0c\u4f8b\u5982<\/span> MP3\u8f6c\u6362\u6210<\/span> WMA\u3002<\/span> <\/span> <\/p>\n

3\u3001<\/span> MP3\u7f16\u7801\uff08\u94c3\u58f0\uff09<\/span> <\/span> <\/strong> <\/p>\n

MP3\uff0c\u4f17\u6240\u5468\u77e5\u4e5f\u5c31\u662f<\/span> MPEG-1 Layer 3\uff0c\u662f\u4e00\u4e2a\u610f\u56fe\u8fbe\u5230\u9ad8\u7684\u538b\u7f29\u7387\u540c\u65f6\u53c8\u80fd\u4fdd\u6301\u76f8\u5f53\u4e0d\u9519\u7684\u97f3\u8d28\u7684\u6709\u635f\u97f3\u9891\u683c\u5f0f\u3002<\/span> Layer 3\u4e0d\u662f<\/span> MPEG Layer 1\u6216<\/span> Layer 2\u7684\u65b0\u7248\uff0c\u53ea\u662f\u4e0e\u5b83\u4eec\u4e0d\u540c\u7684\u590d\u6742\u7684\u7f16\u7801\u65b9\u6848\u3002\u73b0\u5728\u6709\u8bb8\u591a\u53ef\u7528\u7684<\/span> MP3\u7f16\u7801\u5668\uff0c\u5176\u4e2d\u6700\u9ad8\u54c1\u8d28\u7684\u83ab\u8fc7\u4e8e<\/span> Lame\uff0c\u540c\u65f6\u5b83\u4e5f\u662f\u5f00\u6e90\u514d\u8d39\u7684\u3002<\/span> <\/span> <\/p>\n

MP3\u6280\u672f\u4e0a\u652f\u6301\u591a\u58f0\u9053\uff08\u591a\u4e8e<\/span> 2\u4e2a\u58f0\u9053\uff09\uff0c\u4f46\u4ece\u672a\u5b9e\u65bd\u8fc7\u6216\u8005\u4eca\u540e\u4e5f\u4e0d\u4f1a\u4e86\u3002\u4e8b\u5b9e\u4e0a\uff0c\u4f60\u53ef\u4ee5\u7f16\u7801\u6e90\u6587\u4ef6\u4e3a<\/span> pro logic \uff08<\/span> II\uff09\u7684\u591a\u58f0\u9053\u6587\u4ef6\u53d8\u6362\u6210\u7acb\u4f53\u58f0<\/span> MP3\u3002<\/span> <\/span> <\/p>\n

MP3\u6709\u4e0d\u540c\u7684\u91c7\u6837\u7387\u548c\u6bd4\u7279\u7387\uff08\u6ce8\u610f\u6bd4\u7279\u7387\u5e76\u4e0d\u662f\u91cf\u5316\u7cbe\u5ea6\uff0c\u800c\u662f\u4ee3\u8868\u538b\u7f29\u6bd4\uff09\uff0c\u4ee3\u8868\u4e0d\u540c\u7684\u97f3\u8d28\u3002\u7f51\u7edc\u4e0a\u6d41\u884c\u7684<\/span> MP3\u662f<\/span> 44.1KHz\u91c7\u6837\u7387\uff0c<\/span> 128Kbps\u6bd4\u7279\u7387\u7684\u3002\u4e0b\u8868\u4e2d\u5217\u51fa\u4e86\u4e0d\u540c\u54c1\u8d28\u7684<\/span> MP3\uff0c\u5176\u4e2d\u5217\u8868\u793a<\/span> SR(\u91c7\u6837\u9891\u7387<\/span> )\uff0c\u8303\u56f4<\/span> 8KHz~48KHz\uff0c\u884c\u8868\u793a<\/span> BR\uff08\u6bd4\u7279\u7387\uff09\uff0c\u8303\u56f4<\/span> <\/span> <\/p>\n

8Kbps~320Kbps\u3002<\/span> <\/span> <\/p>\n\n\n\n\n\n\n\n
\n

MPEG 2.5 Layer 3<\/span> <\/strong> <\/p>\n<\/td>\n<\/tr>\n

\n

  BR(kbps)<\/span> <\/strong> <\/p>\n

SR(KHz)<\/span> <\/strong> <\/p>\n<\/td>\n

\n

8<\/span> <\/p>\n<\/td>\n

\n

16<\/span> <\/p>\n<\/td>\n

\n

24<\/span> <\/p>\n<\/td>\n

\n

32<\/span> <\/p>\n<\/td>\n

\n

40<\/span> <\/p>\n<\/td>\n

\n

48<\/span> <\/p>\n<\/td>\n

\n

56<\/span> <\/p>\n<\/td>\n

\n

64<\/span> <\/p>\n<\/td>\n

\n

80<\/span> <\/p>\n<\/td>\n

\n

96<\/span> <\/p>\n<\/td>\n

\n

112<\/span> <\/p>\n<\/td>\n

\n

128<\/span> <\/p>\n<\/td>\n

\n

144<\/span> <\/p>\n<\/td>\n

\n

160<\/span> <\/p>\n<\/td>\n<\/tr>\n

\n

8<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n<\/tr>\n

\n

11.025<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n<\/tr>\n

\n

12<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/span> <\/p>\n\n\n\n\n\n\n\n
\n

MPEG 2 Layer 3<\/span> <\/strong> <\/p>\n<\/td>\n<\/tr>\n

\n

  BR(kbps)<\/span> <\/strong> <\/p>\n

SR(KHz)<\/span> <\/strong> <\/p>\n<\/td>\n

\n

8<\/span> <\/p>\n<\/td>\n

\n

16<\/span> <\/p>\n<\/td>\n

\n

24<\/span> <\/p>\n<\/td>\n

\n

32<\/span> <\/p>\n<\/td>\n

\n

40<\/span> <\/p>\n<\/td>\n

\n

48<\/span> <\/p>\n<\/td>\n

\n

56<\/span> <\/p>\n<\/td>\n

\n

64<\/span> <\/p>\n<\/td>\n

\n

80<\/span> <\/p>\n<\/td>\n

\n

96<\/span> <\/p>\n<\/td>\n

\n

112<\/span> <\/p>\n<\/td>\n

\n

128<\/span> <\/p>\n<\/td>\n

\n

144<\/span> <\/p>\n<\/td>\n

\n

160<\/span> <\/p>\n<\/td>\n<\/tr>\n

\n

16<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n<\/tr>\n

\n

22.05<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n<\/tr>\n

\n

24<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/span> <\/p>\n\n\n\n\n\n\n\n
\n

MPEG 1 Layer 3<\/span> <\/strong> <\/p>\n<\/td>\n<\/tr>\n

\n

  BR(kbps)<\/span> <\/strong> <\/p>\n

SR(KHz)<\/span> <\/strong> <\/p>\n<\/td>\n

\n

32<\/span> <\/p>\n<\/td>\n

\n

40<\/span> <\/p>\n<\/td>\n

\n

48<\/span> <\/p>\n<\/td>\n

\n

56<\/span> <\/p>\n<\/td>\n

\n

64<\/span> <\/p>\n<\/td>\n

\n

80<\/span> <\/p>\n<\/td>\n

\n

96<\/span> <\/p>\n<\/td>\n

\n

112<\/span> <\/p>\n<\/td>\n

\n

128<\/span> <\/p>\n<\/td>\n

\n

160<\/span> <\/p>\n<\/td>\n

\n

192<\/span> <\/p>\n<\/td>\n

\n

224<\/span> <\/p>\n<\/td>\n

\n

256<\/span> <\/p>\n<\/td>\n

\n

320<\/span> <\/p>\n<\/td>\n<\/tr>\n

\n

32<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n<\/tr>\n

\n

44.1<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n<\/tr>\n

\n

48<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n

\n

\u221a<\/span> <\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                  \u8868\u4e8c<\/span>   MP3\u5bf9\u5e94\u7684\u4e0d\u540c\u91c7\u6837\u7387\u548c\u6bd4\u7279\u7387<\/span> <\/span> <\/p>\n

4\u3001<\/span> OGG\u7f16\u7801\uff08\u94c3\u58f0\uff09<\/span> <\/span> <\/strong> <\/p>\n

\u3000\u3000\u7f51\u7edc\u4e0a\u51fa\u73b0\u4e86\u4e00\u79cd\u53eb<\/span> Ogg Vorbis\u7684\u97f3\u9891\u7f16\u7801\uff0c\u53f7\u79f0<\/span> MP3\u6740\u624b\uff01<\/span> Ogg Vorbis\u7a76\u7adf\u4ec0\u4e48\u6765\u5934\u5462\uff1f<\/span> OGG\u662f\u4e00\u4e2a\u5e9e\u5927\u7684\u591a\u5a92\u4f53\u5f00\u53d1\u8ba1\u5212\u7684\u9879\u76ee\u540d\u79f0\uff0c\u5c06\u6d89\u53ca\u89c6\u9891\u97f3\u9891\u7b49\u65b9\u9762\u7684\u7f16\u7801\u5f00\u53d1\u3002\u6574\u4e2a<\/span> OGG\u9879\u76ee\u8ba1\u5212\u7684\u76ee\u7684\u5c31\u662f\u5411\u4efb\u4f55\u4eba\u63d0\u4f9b\u5b8c\u5168\u514d\u8d39\u591a\u5a92\u4f53\u7f16\u7801\u65b9\u6848\u3002<\/span> OGG\u7684\u4fe1\u5ff5\u5c31\u662f\uff1a<\/span> OPEN\uff01<\/span> FREE\uff01<\/span> Vorbis\u8fd9\u4e2a\u8bcd\u6c47\u662f\u7279\u91cc\u00b7\u666e\u62c9\u7279\u67f4\u7279\u7684\u5e7b\u60f3\u5c0f\u8bf4\u300a<\/span> Small Gods\u300b\u4e2d\u7684\u4e00\u4e2a<\/span> \"\u82b1\u82b1\u516c\u5b50<\/span> \"\u4eba\u7269\u540d\u3002\u8fd9\u4e2a\u8bcd\u6c47\u6210\u4e3a\u4e86<\/span> OGG\u9879\u76ee\u4e2d\u97f3\u9891\u7f16\u7801\u7684\u6b63\u5f0f\u547d\u540d\u3002\u76ee\u524d<\/span> Vorbis\u5df2\u7ecf\u5f00\u53d1\u6210\u529f\uff0c\u5e76\u4e14\u5f00\u53d1\u51fa\u4e86\u7f16\u7801\u5668\u3002<\/span> <\/span> <\/p>\n

\u3000\u3000<\/span> Ogg Vorbis\u662f\u9ad8\u8d28\u91cf\u7684\u97f3\u9891\u7f16\u7801\u65b9\u6848\uff0c\u5b98\u65b9\u6570\u636e\u663e\u793a\uff1a<\/span> Ogg Vorbis\u53ef\u4ee5\u5728\u76f8\u5bf9\u8f83\u4f4e\u7684\u6570\u636e\u901f\u7387\u4e0b\u5b9e\u73b0\u6bd4<\/span> MP3\u66f4\u597d\u7684\u97f3\u8d28\u3002<\/span> Ogg Vorbis\u8fd9\u79cd\u7f16\u7801\u4e5f\u8fdc\u6bd4<\/span> 90\u5e74\u4ee3\u5f00\u53d1\u6210\u529f\u7684<\/span> MP3\u5148\u8fdb\uff0c\u5979\u53ef\u4ee5\u652f\u6301\u591a\u58f0\u9053\uff0c\u8fd9\u610f\u5473\u7740\u4ec0\u4e48\uff1f\u8fd9\u610f\u5473\u7740<\/span> Ogg Vorbis\u5728<\/span> SACD\u3001<\/span> DTSCD\u3001<\/span> DVD AUDIO\u6293\u8f68\u8f6f\u4ef6\u7684\u652f\u6301\u4e0b\uff0c\u53ef\u4ee5\u5bf9\u6240\u6709\u7684\u58f0\u9053\u8fdb\u884c\u7f16\u7801\uff0c\u800c\u4e0d\u662f<\/span> MP3\u53ea\u80fd\u7f16\u7801<\/span> 2\u4e2a\u58f0\u9053\u3002\u591a\u58f0\u9053\u97f3\u4e50\u7684\u5174\u8d77\uff0c\u7ed9\u97f3\u4e50\u6b23\u8d4f\u5e26\u6765\u4e86\u9769\u547d\u6027\u7684\u53d8\u5316\uff0c\u5c24\u5176\u5728\u6b23\u8d4f\u4ea4\u54cd\u65f6\uff0c\u4f1a\u5e26\u6765\u66f4\u591a\u4e34\u573a\u611f\u3002\u8fd9\u573a\u9769\u547d\u6027\u7684\u53d8\u5316\u662f<\/span> MP3\u65e0\u6cd5\u9002\u5e94\u7684\u3002<\/span> <\/span> <\/p>\n

\u3000\u3000\u548c<\/span> MP3\u4e00\u6837\uff0c<\/span> Ogg Vorbis\u662f\u4e00\u79cd\u7075\u6d3b\u5f00\u653e\u7684\u97f3\u9891\u7f16\u7801\uff0c\u80fd\u591f\u5728\u7f16\u7801\u65b9\u6848\u5df2\u7ecf\u56fa\u5b9a\u4e0b\u6765\u540e\u8fd8\u80fd\u5bf9\u97f3\u8d28\u8fdb\u884c\u660e\u663e\u7684\u8c03\u8282\u548c\u65b0\u7b97\u6cd5\u7684\u6539\u826f\u3002\u56e0\u6b64\uff0c\u5b83\u7684\u58f0\u97f3\u8d28\u91cf\u5c06\u4f1a\u8d8a\u6765\u8d8a\u597d\uff0c\u548c<\/span> MP3\u76f8\u4f3c\uff0c<\/span> Ogg Vorbis\u66f4\u50cf\u4e00\u4e2a\u97f3\u9891\u7f16\u7801\u6846\u67b6\uff0c\u53ef\u4ee5\u4e0d\u65ad\u5bfc\u5165\u65b0\u6280\u672f\u9010\u6b65\u5b8c\u5584\u3002\u548c<\/span> MP3\u4e00\u6837\uff0c<\/span> OGG\u4e5f\u652f\u6301<\/span> VBR(\u53ef\u53d8\u6bd4\u7279\u7387<\/span> )\u3002<\/span> <\/span> <\/p>\n

5\u3001<\/span> MPC \u7f16\u7801<\/span> <\/span> <\/strong> <\/p>\n

\u3000\u3000<\/span> MPC (Muse Pack)\u9ad8\u6bd4\u7279\u7387\u9ad8\u4fdd\u771f\u97f3\u4e50\u683c\u5f0f\u3002\u662f\u53e6\u5916\u4e00\u4e2a\u4ee4\u4eba\u522e\u76ee\u76f8\u770b\u7684\u5b9e\u529b\u6d3e\u9009\u624b\uff0c\u5b83\u7684\u666e\u53ca\u8fc7\u7a0b\u975e\u5e38\u4f4e\u8c03\uff0c\u4e5f\u6ca1\u6709\u4ec0\u4e48\u590d\u6742\u7684\u80cc\u666f\u6545\u4e8b\uff0c\u5979\u7684\u51fa\u73b0\u76ee\u7684\u5c31\u53ea\u6709\u4e00\u4e2a\uff0c\u66f4\u5c0f\u7684\u4f53\u79ef\u66f4\u597d\u7684\u97f3\u8d28\uff01<\/span> MPC\u4ee5\u524d\u88ab\u79f0\u4f5c<\/span> MP+\uff0c\u5f88\u663e\u7136\uff0c\u53ef\u4ee5\u770b\u51fa\u5979\u9488\u5bf9\u7684\u7ade\u4e89\u5bf9\u624b\u662f\u8c01\u3002\u4f46\u662f\uff0c\u53ea\u8981\u7528\u8fc7\u8fd9\u79cd\u7f16\u7801\u7684\u4eba\u90fd\u4f1a\u6709\u4e2a\u6df1\u523b\u7684\u5370\u8c61\uff0c\u5c31\u662f\u5979\u51fa\u4f17\u7684\u97f3\u8d28\u3002<\/span> <\/span> <\/p>\n

6\u3001<\/span> mp3PRO \u7f16\u7801<\/span> <\/span> <\/strong> <\/p>\n

2001\u5e74<\/span> 6\u6708<\/span> 14\u65e5\uff0c\u7f8e\u56fd\u6c64\u59c6\u68ee\u591a\u5a92\u4f53\u516c\u53f8<\/span> (Thomson Multimedia SA)\u4e0e\u4f5b\u6717\u8d6b\u5f17\u534f\u4f1a<\/span> (Fraunhofer Institute)\u4e8e<\/span> 6\u6708<\/span> 14\u65e5<\/span> \u53d1\u5e03\u4e86\u4e00\u79cd\u65b0\u7684\u97f3\u4e50\u683c\u5f0f\u7248\u672c\uff0c\u540d\u79f0\u4e3a<\/span> mp3PRO\uff0c\u8fd9\u662f\u4e00\u79cd\u57fa\u4e8e<\/span> mp3\u7f16\u7801\u6280\u672f\u7684\u6539\u826f\u65b9\u6848\uff0c\u4ece\u5b98\u65b9\u516c\u5e03\u7684\u7279\u5f81\u770b\u6765\u786e\u5b9e\u76f8\u5f53\u5438\u5f15\u4eba\u3002\u4ece\u5404\u65b9\u9762\u7684\u8d44\u6599\u663e\u793a\uff0c<\/span> mp3PRO\u5e76\u4e0d\u662f\u4e00\u79cd\u5168\u65b0\u7684\u683c\u5f0f\uff0c\u5b8c\u5168\u662f\u57fa\u4e8e\u4f20\u7edf<\/span> mp3\u7f16\u7801\u6280\u672f\u7684\u4e00\u79cd\u6539\u826f\uff0c\u672c\u8eab\u6700\u5927\u7684\u6280\u672f\u4eae\u70b9\u5c31\u5728\u4e8e<\/span> SBR\uff08<\/span> Spectral Band Replication \u9891\u6bb5\u590d\u5236\uff09\uff0c\u8fd9\u662f\u4e00\u79cd\u65b0\u7684\u97f3\u9891\u7f16\u7801\u589e\u5f3a\u7b97\u6cd5\u3002\u5b83\u63d0\u4f9b\u4e86\u6539\u5584\u4f4e\u4f4d\u7387\u60c5\u51b5\u4e0b\u97f3\u9891\u548c\u8bed\u97f3\u7f16\u7801\u7684\u6027\u80fd\u7684\u53ef\u80fd\u3002\u8fd9\u79cd\u65b9\u6cd5\u53ef\u5728\u6307\u5b9a\u7684\u4f4d\u7387\u4e0b\u589e\u52a0\u97f3\u9891\u7684\u5e26\u5bbd\u6216\u6539\u5584\u7f16\u7801\u6548\u7387\u3002<\/span> SBR\u6700\u5927\u7684\u4f18\u52bf\u5c31\u662f\u5728\u4f4e\u6570\u636e\u901f\u7387\u4e0b\u5b9e\u73b0\u975e\u5e38\u9ad8\u6548\u7684\u7f16\u7801\uff0c\u4e0e\u4f20\u7edf\u7684\u7f16\u7801\u6280\u672f\u4e0d\u540c\u7684\u662f\uff0c<\/span> SBR\u66f4\u50cf\u662f\u4e00\u79cd\u540e\u5904\u7406\u6280\u672f\uff0c\u56e0\u6b64\u89e3\u7801\u5668\u7684\u7b97\u6cd5\u7684\u4f18\u52a3\u76f4\u63a5\u5f71\u54cd\u5230\u97f3\u8d28\u7684\u597d\u574f\u3002\u9ad8\u9891\u5b9e\u9645\u4e0a\u662f\u7531\u89e3\u7801\u5668\uff08\u64ad\u653e\u5668\uff09\u4ea7\u751f\u7684\uff0c<\/span> SBR\u7f16\u7801\u7684\u6570\u636e\u66f4\u50cf\u662f\u4e00\u79cd\u4ea7\u751f\u9ad8\u9891\u7684\u547d\u4ee4\u96c6\uff0c\u6216\u8005\u79f0\u4e3a\u6307\u5bfc\u6027\u7684\u4fe1\u53f7\u6e90\uff0c\u8fd9\u6709\u70b9\u99c7<\/span> idi\u7684\u5de5\u4f5c\u65b9\u5f0f\u3002\u6211\u4eec\u53ef\u4ee5\u770b\u5230\uff0c<\/span> mp3PRO\u5176\u5b9e\u662f\u4e00\u79cd<\/span> mp3\u4fe1\u53f7\u6d41\u548c<\/span> SBR\u4fe1\u53f7\u6d41\u7684\u6df7\u5408\u6570\u636e\u6d41\u7f16\u7801\u3002\u6709\u5173\u8d44\u6599\u663e\u793a\uff0c<\/span> SBR\u6280\u672f\u53ef\u4ee5\u6539\u5584\u4f4e\u6570\u636e\u6d41\u91cf\u4e0b\u7684\u9ad8\u9891\u97f3\u8d28\uff0c\u6539\u5584\u7a0b\u5ea6\u7ea6\u4e3a<\/span> 30%\uff0c\u6211\u4eec\u4e0d\u7ba1\u8fd9\u4e2a<\/span> 30%\u662f\u5982\u4f55\u5f97\u6765\u7684\uff0c\u4f46\u53ef\u4ee5\u4e8b\u5148\u9884\u77e5\u8fd9\u79cd\u6539\u5584\u53ef\u4ee5\u8ba9<\/span> 64kbps\u7684<\/span> mp3\u8fbe\u5230<\/span> 128kbps\u7684<\/span> mp3\u7684\u97f3\u8d28\u6c34\u5e73\uff08\u6ce8\uff1a\u5728\u76f8\u540c\u7684\u7f16\u7801\u6761\u4ef6\u4e0b\uff0c\u6570\u636e\u901f\u7387\u7684\u63d0\u5347\u548c\u97f3\u8d28\u7684\u63d0\u5347\u4e0d\u662f\u6210\u6b63\u6bd4\u7684\uff0c\u81f3\u5c11\u4eba\u8033\u542c\u89c9\u4e0a\u662f\u8fd9\u6837\u7684\uff09\uff0c\u8fd9\u548c\u5b98\u65b9\u58f0\u79f0\u7684<\/span> 64kbps\u7684<\/span> mp3PRO\u53ef\u4ee5\u5ab2\u7f8e<\/span> 128kbps\u7684<\/span> mp3\u7684\u5ba3\u4f20\u57fa\u672c\u662f\u543b\u5408\u7684\u3002<\/span> <\/span> <\/p>\n

7\u3001<\/span> WMA\uff08\u94c3\u58f0\uff09 <\/span> <\/span> <\/strong> <\/p>\n

\u3000\u3000<\/span> WMA\u5c31\u662f<\/span> Windows Media Audio\u7f16\u7801\u540e\u7684\u6587\u4ef6\u683c\u5f0f\uff0c\u7531\u5fae\u8f6f\u5f00\u53d1\uff0c<\/span> WMA\u9488\u5bf9\u7684\u4e0d\u662f\u5355\u673a\u5e02\u573a\uff0c\u800c\u662f\u7f51\u7edc\u3002\u7ade\u4e89\u5bf9\u624b\u5c31\u662f\u7f51\u7edc\u5a92\u4f53\u5e02\u573a\u4e2d\u8457\u540d\u7684<\/span> Real Networks\u3002\u5fae\u8f6f\u58f0\u79f0\uff0c\u5728\u53ea\u6709<\/span> 64kbps\u7684\u7801\u7387\u60c5\u51b5\u4e0b\uff0c<\/span> WMA\u53ef\u4ee5\u8fbe\u5230\u63a5\u8fd1<\/span> CD\u7684\u97f3\u8d28\u3002\u548c\u4ee5\u5f80\u7684\u7f16\u7801\u4e0d\u540c\uff0c<\/span> WMA\u652f\u6301\u9632\u590d\u5236\u529f\u80fd\uff0c\u5979\u652f\u6301\u901a\u8fc7<\/span> Windows Media Rights Manager \u52a0\u5165\u4fdd\u62a4\uff0c\u53ef\u4ee5\u9650\u5236\u64ad\u653e\u65f6\u95f4\u548c\u64ad\u653e\u6b21\u6570\u751a\u81f3\u4e8e\u64ad\u653e\u7684\u673a\u5668\u7b49\u7b49\u3002<\/span> WMA\u652f\u6301\u6d41\u6280\u672f\uff0c\u5373\u4e00\u8fb9\u8bfb\u4e00\u8fb9\u64ad\u653e\uff0c\u56e0\u6b64<\/span> WMA\u53ef\u4ee5\u5f88\u8f7b\u677e\u7684\u5b9e\u73b0\u5728\u7ebf\u5e7f\u64ad\uff0c\u7531\u4e8e\u662f\u5fae\u8f6f\u7684\u6770\u4f5c\uff0c\u56e0\u6b64\uff0c\u5fae\u8f6f\u5728<\/span> Windows\u4e2d\u52a0\u5165\u4e86\u5bf9<\/span> WMA\u7684\u652f\u6301\uff0c<\/span> WMA\u6709\u7740\u4f18\u79c0\u7684\u6280\u672f\u7279\u5f81\uff0c\u5728\u5fae\u8f6f\u7684\u5927\u529b\u63a8\u5e7f\u4e0b\uff0c\u8fd9\u79cd\u683c\u5f0f\u88ab\u8d8a\u6765\u8d8a\u591a\u7684\u4eba\u6240\u63a5\u53d7\u3002<\/span> <\/span> <\/p>\n

8\u3001<\/span> RA<\/span> <\/strong> <\/p>\n

\u3000\u3000<\/span> RA\u5c31\u662f<\/span> RealAudio\u683c\u5f0f\uff0c\u8fd9\u662f\u5404\u4f4d\u7f51\u866b\u63a5\u89e6\u5f97\u975e\u5e38\u591a\u7684\u4e00\u79cd\u683c\u5f0f\uff0c\u5927\u90e8\u5206\u97f3\u4e50\u7f51\u7ad9\u7684\u5728\u7ebf\u8bd5\u542c\u90fd\u662f\u91c7\u7528\u4e86<\/span> RealAudio\uff0c\u8fd9\u79cd\u683c\u5f0f\u5b8c\u5168\u9488\u5bf9\u7684\u5c31\u662f\u7f51\u7edc\u4e0a\u7684\u5a92\u4f53\u5e02\u573a\uff0c\u652f\u6301\u975e\u5e38\u4e30\u5bcc\u7684\u529f\u80fd\u3002\u6700\u5927\u7684\u95ea\u70c1\u70b9\u5c31\u662f\u8fd9\u79cd\u683c\u5f0f\u53ef\u4ee5\u6839\u636e\u542c\u4f17\u7684\u5e26\u5bbd\u6765\u63a7\u5236\u81ea\u5df1\u7684\u7801\u7387\uff0c\u5728\u4fdd\u8bc1\u6d41\u7545\u7684\u524d\u63d0\u4e0b\u5c3d\u53ef\u80fd\u63d0\u9ad8\u97f3\u8d28\u3002<\/span> RA\u53ef\u4ee5\u652f\u6301\u591a\u79cd\u97f3\u9891\u7f16\u7801\uff0c\u5305\u62ec<\/span> ATRAC3\u3002\u548c<\/span> WMA\u4e00\u6837\uff0c<\/span> RA\u4e0d\u4f46\u90fd\u652f\u6301\u8fb9\u8bfb\u8fb9\u653e\uff0c\u4e5f\u540c\u6837\u652f\u6301\u4f7f\u7528\u7279\u6b8a\u534f\u8bae\u6765\u9690\u533f\u6587\u4ef6\u7684\u771f\u5b9e\u7f51\u7edc\u5730\u5740\uff0c\u4ece\u800c\u5b9e\u73b0\u53ea\u5728\u7ebf\u64ad\u653e\u800c\u4e0d\u63d0\u4f9b\u4e0b\u8f7d\u7684\u6b23\u8d4f\u65b9\u5f0f\u3002\u8fd9\u5bf9\u5531\u7247\u516c\u53f8\u548c\u5531\u7247\u9500\u552e\u516c\u53f8\u5f88\u91cd\u8981\uff0c\u5728\u5404\u65b9\u7684\u5927\u529b\u63a8\u5e7f\u4e0b\uff0c<\/span> RA\u548c<\/span> WMA\u662f\u76ee\u524d\u4e92\u8054\u7f51\u4e0a\uff0c\u7528\u4e8e\u5728\u7ebf\u8bd5\u542c\u6700\u591a\u7684\u97f3\u9891\u5a92\u4f53\u683c\u5f0f\u3002<\/span> <\/span> <\/p>\n

9\u3001<\/span> APE<\/span> <\/strong> <\/p>\n

APE\u662f<\/span> Monkey's Audio\u63d0\u4f9b\u7684\u4e00\u79cd\u65e0\u635f\u538b\u7f29\u683c\u5f0f\u3002<\/span> Monkey's Audio\u63d0\u4f9b\u4e86<\/span> Winamp\u7684\u63d2\u4ef6\u652f\u6301\uff0c\u56e0\u6b64\u8fd9\u5c31\u610f\u5473\u7740\u538b\u7f29\u540e\u7684\u6587\u4ef6\u4e0d\u518d\u662f\u5355\u7eaf\u7684\u538b\u7f29\u683c\u5f0f\uff0c\u800c\u662f\u548c<\/span> MP3\u4e00\u6837\u53ef\u4ee5\u64ad\u653e\u7684\u97f3\u9891\u6587\u4ef6\u683c\u5f0f\u3002\u8fd9\u79cd\u683c\u5f0f\u7684\u538b\u7f29\u6bd4\u8fdc\u4f4e\u4e8e\u5176\u4ed6\u683c\u5f0f\uff0c\u4f46\u80fd\u591f\u505a\u5230\u771f\u6b63\u65e0\u635f\uff0c\u56e0\u6b64\u83b7\u5f97\u4e86\u4e0d\u5c11\u53d1\u70e7\u7528\u6237\u7684\u9752\u7750\u3002\u5728\u73b0\u6709\u4e0d\u5c11\u65e0\u635f\u538b\u7f29\u65b9\u6848\u79cd\uff0c<\/span> APE\u662f\u4e00\u79cd\u6709\u7740\u7a81\u51fa\u6027\u80fd\u7684\u683c\u5f0f\uff0c\u4ee4\u4eba\u6ee1\u610f\u7684\u538b\u7f29\u6bd4\u4ee5\u53ca\u98de\u5feb\u7684\u538b\u7f29\u901f\u5ea6\uff0c\u6210\u4e3a\u4e86\u4e0d\u5c11\u670b\u53cb\u79c1\u4e0b\u4ea4\u6d41\u53d1\u70e7\u97f3\u4e50\u7684\u552f\u4e00\u9009\u62e9\u3002<\/span> <\/span> <\/p>\n

10\u3001<\/span> AMR(\u94c3\u58f0<\/span> )<\/span> <\/strong> <\/p>\n

    <\/span> <\/strong> AMR(Adaptive Multi-Rate)\u81ea\u9002\u5e94\u591a\u901f\u7387\u7f16\u7801\u3002\u662f\u4e00\u79cd\u5e94\u7528\u5728\u624b\u673a\u4e0a\u7684\u4e00\u79cd\u8bed\u97f3\u538b\u7f29\u683c\u5f0f\uff0c\u4e5f\u5c31\u662f\u8bf4\u6211\u4eec\u7528\u624b\u673a\u5f55\u97f3\u800c\u6210\u7684\u6587\u4ef6\u5c31\u662f\u8fd9\u79cd\u683c\u5f0f\u7684\u3002<\/span> AMR\u683c\u5f0f\u538b\u7f29\u7387\u8f83\u9ad8\u4f46\u662f\u97f3\u8d28\u76f8\u5bf9\u8f83\u5dee\u4e86\u4e00\u70b9\u3002\u4f18\u70b9\u5c31\u662f\u6211\u4eec\u53ef\u4ee5\u968f\u5fc3\u6240\u6b32\u5730\u5f55\u5236\u3002<\/span> <\/span> <\/p>\n

11\u3001<\/span> <\/span> <\/strong> AAC\/AAC+<\/span> <\/strong> <\/strong> <\/p>\n

\u00d8         <\/span> <\/span> \u4ec0\u4e48\u662f<\/span> <\/strong> AAC?<\/span> <\/strong> <\/p>\n

AAC\u4ee3\u8868<\/span> Advanced Audio Coding(\u9ad8\u7ea7\u97f3\u9891\u89e3\u7801<\/span> )\uff0c\u662f\u4e00\u79cd\u7531<\/span> MPEG-4\u6807\u51c6\u5b9a\u4e49\u7684\u6709\u635f\u97f3\u9891\u538b\u7f29\u683c\u5f0f\uff0c\u7531<\/span> Fraunhofer\u53d1\u5c55\uff0c<\/span> Dolby, Sony\u548c<\/span> AT&T\u662f\u4e3b\u8981\u7684\u8d21\u732e\u8005\u3002\u5b83\u88ab\u8ba4\u4e3a\u662f<\/span> MP3\u7684\u7ee7\u627f\u8005\u3002<\/span> AAC\u80fd\u591f\u5728\u4e00\u6761\u97f3\u8f68\u4e2d\u5305\u62ec<\/span> 48\u6761\u5168\u5e26\u5bbd\uff08\u76f4\u5230<\/span> 96khz\uff09\u97f3\u9891\u58f0\u9053\uff0c\u52a0\u4e0a<\/span> 15\u6761\u4f4e\u9891\u589e\u5f3a\uff08<\/span> LFE\uff0c\u9650\u5236\u5230<\/span> 120Hz\uff09\u58f0\u9053\uff0c\u76f4\u5230<\/span> 15\u6761\u6570\u636e\u6d41\u5e76\u4e14\u66f4\u591a\u3002<\/span> <\/span> <\/p>\n

\u5176\u5b9e\uff0c<\/span> AAC\u7684\u6280\u672f\u65e9\u5728<\/span> 1997\u5e74\u5c31\u6210\u578b\u4e86\uff0c\u5f53\u65f6\u88ab\u79f0\u4e3a<\/span> MPEG-2 AAC\uff0c\u4f46\u662f\u968f\u7740<\/span> 2000\u5e74<\/span> MPEG-4\u97f3\u9891\u6807\u51c6\u7684\u51fa\u53f0\uff0c<\/span> MPEG-2 AAC<\/strong> \u88ab\u7528\u5728\u8fd9\u4e00\u6807\u51c6\u4e2d\uff0c\u540c\u65f6\u8ffd\u52a0\u4e86\u4e00\u4e9b\u65b0\u7684\u7f16\u7801\u7279\u6027\uff0c\u6240\u4ee5\u5b83\u5c31\u6539\u79f0\u4e3a<\/span> MPEG-4 AAC<\/strong> \u3002\u4e0e<\/span> MP3\u4e0d\u540c\uff0c<\/span> AAC\u7684\u6280\u672f\u638c\u63e1\u5728\u591a\u5bb6\u5382\u5546\u624b\u4e2d\uff0c\u8fd9\u4f7f\u5f97<\/span> AAC\u7f16\u7801\u5668\u975e\u5e38\u591a\uff0c\u65e2\u6709\u7eaf\u5546\u4e1a\u7684\u7f16\u7801\u5668\uff0c\u4e5f\u6709\u5b8c\u5168\u514d\u8d39\u7684\u7f16\u7801\u5668\u3002\u7eaf\u5546\u4e1a\u7684\u7f16\u7801\u5668\u5982<\/span> Fraunhofer IIS\u7684<\/span> FhG\u3001\u675c\u6bd4\u516c\u53f8\u7684<\/span> Dolby AAC\uff0c\u514d\u8d39\u7684\u6709<\/span> Free AAC\u3001\u82f9\u679c\u516c\u53f8\u7684<\/span> iTune\uff0c<\/span> Nero\u4e5f\u901a\u8fc7\u5b83\u7684<\/span> Nero 6\u63d0\u4f9b\u4e86<\/span> Nero AAC\u3002<\/span> <\/span> <\/p>\n

AAC\u662f\u4e00\u79cd\u9ad8\u538b\u7f29\u6bd4\u7684\u97f3\u9891\u538b\u7f29\u7b97\u6cd5\uff0c\u5b83\u7684\u538b\u7f29\u6bd4\u53ef\u8fbe<\/span> 20:1\uff0c\u8fdc\u8fdc\u8d85\u8fc7\u4e86<\/span> AC-3\u3001<\/span> MP3\u7b49\u8f83\u8001\u7684\u97f3\u9891\u538b\u7f29\u7b97\u6cd5\u3002\u4e00\u822c\u8ba4\u4e3a\uff0c<\/span> AAC\u683c\u5f0f\u5728<\/span> 96Kbps\u7801\u7387\u7684\u8868\u73b0\u8d85\u8fc7\u4e86<\/span> 128Kbps\u7684<\/span> MP3\u97f3\u9891\u3002<\/span> AAC\u53e6\u4e00\u4e2a\u5f15\u4eba\u6ce8\u76ee\u7684\u5730\u65b9\u5c31\u662f\u5b83\u7684\u591a\u58f0\u9053\u7279\u6027\uff0c\u5b83\u652f\u6301<\/span> 1~48\u4e2a\u5168\u97f3\u57df\u97f3\u8f68\u548c<\/span> 15\u4e2a\u4f4e\u9891\u97f3\u8f68\u3002\u9664\u6b64\u4e4b\u5916\uff0c<\/span> AAC\u6700\u9ad8\u652f\u6301<\/span> 96KHz\u7684\u91c7\u6837\u7387\uff0c\u5176\u89e3\u6790\u80fd\u529b\u8db3\u53ef\u4ee5\u548c<\/span> DVD-Audio\u7684<\/span> PCM\u7f16\u7801\u76f8\u63d0\u5e76\u8bba\uff0c\u56e0\u6b64\uff0c\u5b83\u5f97\u5230\u4e86<\/span> DVD\u8bba\u575b\u7684\u652f\u6301\uff0c\u6210\u4e3a\u4e86\u4e0b\u4e00\u4ee3<\/span> DVD\u7684\u6807\u51c6\u97f3\u9891\u7f16\u7801\u3002<\/span> <\/span> <\/p>\n

AAC\u7684\u5bb6\u65cf\u975e\u5e38\u5e9e\u5927\uff0c\u6709<\/span> 9\u79cd\u89c4\u683c\uff0c\u53ef\u9002\u5e94\u4e0d\u540c\u573a\u5408\u5e94\u7528\u7684\u9700\u8981\u3002\u5176\u4e2d<\/span> LC\u4f4e\u590d\u6742\u6027\u89c4\u683c\u53bb\u6389\u4e86\u9884\u6d4b\u548c\u589e\u76ca\u63a7\u5236\u6a21\u5757\uff0c\u964d\u4f4e\u4e86\u590d\u6742\u5ea6\uff0c\u63d0\u9ad8\u7f16\u7801\u6548\u7387\uff0c\u662f\u76ee\u524d\u4f7f\u7528\u5f97\u6700\u591a\u7684\u89c4\u683c\u3002<\/span> <\/span> <\/p>\n

\u76ee\u524d\uff0c\u82f9\u679c\u3001<\/span> AT&T\u548c<\/span> RealNetworks\u5df2\u7ecf\u5f00\u59cb\u63d0\u4f9b\u6536\u8d39\u7684<\/span> AAC\u97f3\u4e50\u4e0b\u8f7d\u670d\u52a1\u3002<\/span> AAC\u4e5f\u5f97\u5230\u4e86\u4f17\u591a\u786c\u4ef6\u5382\u5546\u7684\u652f\u6301\uff0c\u9664\u4e86\u82f9\u679c\u7684<\/span> iPOD\u968f\u8eab\u542c\uff0c\u8fd8\u6709\u8bfa\u57fa\u4e9a\u7684\u591a\u6b3e\u624b\u673a\u53ca\u677e\u4e0b\u7684\u90e8\u5206\u968f\u8eab\u542c\u4ea7\u54c1\u53ef\u652f\u6301<\/span> AAC\u97f3\u9891\u7684\u64ad\u653e\u3002\u53e6\u5916\uff0c\u76ee\u524d\u5df2\u7ecf\u6709\u90e8\u5206<\/span> MPEG-1\/2\u89e3\u7801\u82af\u7247\u4e2d\u52a0\u5165\u4e86<\/span> AAC\u89e3\u7801\u529f\u80fd\uff0c\u51fa\u73b0\u652f\u6301<\/span> AAC\u97f3\u9891\u64ad\u653e\u7684<\/span> DVD\u5f71\u789f\u673a\u80af\u5b9a\u662f\u8fdf\u65e9\u7684\u4e8b\u60c5\u3002<\/span> <\/span> <\/p>\n

\u00d8         <\/span> <\/span> \u4ec0\u4e48\u662f<\/span> <\/strong> HE-AAC(\u4e5f\u79f0<\/span> AAC+)\u548c<\/span> LC-AAC\uff1f<\/span> <\/span> <\/strong> <\/p>\n

AAC\u6709\u4e24\u79cd<\/span> LC AAC\u4e0e<\/span> HE AAC\uff0c<\/span> HE AAC\u662f\u8f83\u65b0\u7684\u3002<\/span> LC\u610f\u601d\u662f<\/span> \"low complexity\"(\u4f4e\u590d\u6742\u6027<\/span> )\u800c<\/span> HE\u610f\u601d\u662f<\/span> \"high efficiency\"(\u9ad8\u6548\u6027<\/span> )\u3002<\/span> <\/span> <\/p>\n

HE-AAC\u4e5f\u79f0\u4e4b\u4e3a<\/span> AAC SBR\/AAC+\/aacplus\u7b49\u3002\u6ce8\u610f<\/span> HE-AAC\u6ce8\u91cd\u4e8e\u4f4e\u7801\u6d41\u7684\u7f16\u7801\u5e76\u5f88\u9002\u5408\u591a\u58f0\u9053\u6587\u4ef6\uff08\u66f4\u5c0f\u7684\u6587\u4ef6\u5c3a\u5bf8\uff09\u3002<\/span> <\/span> <\/p>\n

\u4ece\u5b66\u672f\u4e0a\u8bb2\uff0c<\/span> HE-AAC\u6df7\u5408\u4e86<\/span> AAC\u4e0e<\/span> SBR\u6280\u672f\uff0c\u5904\u7406\u4f4e\u6bd4\u7279\u7387\u80fd\u6709\u8f83\u597d\u7684\u6548\u679c\u3002<\/span> SBR\u4ee3\u8868\u7684\u662f<\/span> Spectral Band Replication(\u9891\u6bb5\u590d\u5236<\/span> )\u3002<\/span> SBR\u7684\u5173\u952e\u662f\u5728\u4f4e\u7801\u6d41\u4e0b\u63d0\u4f9b\u5168\u5e26\u5bbd\u7684\u7f16\u7801\u800c\u4e0d\u4f1a\u4ea7\u751f\u4ea7\u751f\u591a\u4f59\u7684\u4fe1\u53f7\u3002\u4f20\u7edf\u8ba4\u4e3a\u97f3\u9891\u7f16\u7801\u5728\u4f4e\u7801\u6d41\u4e0b\u610f\u5473\u7740\u51cf\u5c11\u5e26\u5bbd\u548c\u964d\u4f4e\u91c7\u6837\u7387\u6216\u4ea7\u751f\u4ee4\u4eba\u4e0d\u5feb\u7684\u566a\u97f3\u4fe1\u53f7\u3002<\/span> SBR\u89e3\u51b3\u95ee\u9898\u7684\u65b9\u6cd5\u662f\u8ba9\u6838\u5fc3\u7f16\u7801\u53bb\u7f16\u7801\u4f4e\u9891\u4fe1\u53f7\uff0c\u800c<\/span> SBR\u89e3\u7801\u5668\u901a\u8fc7\u5206\u6790\u4f4e\u9891\u4fe1\u53f7\u4ea7\u751f\u9ad8\u9891\u4fe1\u53f7\u548c\u4e00\u4e9b\u4fdd\u7559\u5728\u6bd4\u7279\u6d41\u4e2d\u7684\u6307\u5bfc\u4fe1\u53f7\uff08\u901a\u5e38\u7801\u6d41\u6781\u4f4e\uff0c<\/span> ~2 kbps\uff09\u3002\u8fd9\u4e5f\u662f\u4e3a\u4ec0\u4e48\u88ab\u53eb\u505a<\/span> Spectral Band Replication\u7684\u539f\u56e0\uff0c\u5b83\u53ea\u662f\u589e\u52a0\u97f3\u9891\u7684\u5e26\u5bbd\uff0c\u800c\u975e\u91cd\u5efa\u3002<\/span> (\u7c7b\u4f3c\u7684\u6280\u672f\u4e5f\u7528\u5728<\/span> mp3 pro 64kbps\u80fd\u5ab2\u7f8e<\/span> 128kbps\u7684<\/span> mp3\u5c31\u662f\u8fd9\u9053\u7406<\/span> )<\/span> <\/p>\n

\u00d8         <\/span> <\/span> MP4\u4e0e<\/span> AAC<\/span> <\/strong> <\/p>\n

\u3000\u3000<\/span> MP4\u6700\u521d\u662f\u4e00\u79cd\u97f3\u9891\u683c\u5f0f\uff0c\u548c<\/span> MPEG-4\u6ca1\u6709\u592a\u5927\u7684\u5173\u7cfb\uff0c\u5c31\u50cf<\/span> MP3\u548c<\/span> MPEG-3\u6ca1\u6709\u5173\u7cfb\u4e00\u6837\u3002<\/span> MP3\u662f<\/span> MPEG-1 Audio Layer 3 \u7684\u7f29\u5199\uff1b\u800c<\/span> MP4\u662f<\/span> MPEG-2 AAC\uff0c\u5b8c\u5b8c\u5168\u5168\u662f\u4e00\u79cd\u97f3\u9891\u538b\u7f29\u683c\u5f0f\uff0c \u589e\u52a0\u4e86\u8bf8\u5982\u5bf9\u7acb\u4f53\u58f0\u7684\u5b8c\u7f8e\u518d\u73b0\u3001\u591a\u5a92\u4f53\u63a7\u5236\u3001\u964d\u566a\u7b49\u65b0\u7279\u6027\uff0c\u6700\u91cd\u8981\u7684\u662f\uff0c<\/span> MP4\u901a\u8fc7\u7279\u6b8a\u7684\u6280\u672f\u5b9e\u73b0\u6570\u7801\u7248\u6743\u4fdd\u62a4\uff0c\u8fd9\u662f<\/span> MP3\u6240\u65e0\u6cd5\u6bd4\u62df\u7684\u3002<\/span> <\/span> <\/p>\n

\u73b0\u5728\u5e02\u9762\u4e0a\u7684<\/span> MP4\u591a\u6570\u504f\u5411\u4e8e\u591a\u5a92\u4f53\u64ad\u653e\u5668\uff0c\u80fd\u591f\u64ad\u653e<\/span> AAC\u7684\uff0c\u53ef\u4ee5\u8bf4\u662f\u51e4\u6bdb\u9e9f\u89d2\u3002\u751a\u81f3\u6709\u5a92\u4f53\u628a<\/span> MP4\u8bf4\u6210\u662f<\/span> MPEG4\u7684\u7f29\u5199\uff0c\u8fd9\u5728\u4ee5\u524d\u770b\u6765\u662f\u4e00\u4e2a\u8c2c\u8bba\uff0c\u4f46\u662f\u7ecf\u8fc7\u5546\u5bb6\u4e0d\u65ad\u7684\u7092\u4f5c\uff0c\u8fd9\u4e2a\u8c2c\u8bba\u4e5f\u5c31\u6210\u4e3a\u4e86\u771f\u7406\u3002\u73b0\u5728\u82e5\u679c\u4f60\u53bb\u7535\u8111\u57ce\u542c\u5230<\/span> MP4\u8fd9\u4e2a\u8bcd\uff0c\u7edd\u5bf9\u662f\u80fd\u64ad\u653e\u89c6\u9891\u683c\u5f0f\u7684\u591a\u5a92\u4f53\u64ad\u653e\u5668\u7684\u6982\u5ff5\uff0c\u800c\u4e0d\u662f\u80fd\u64ad\u653e\u97f3\u9891<\/span> MP4 AAC\u7684\u968f\u8eab\u542c\u3002\u51fa\u73b0\u8fd9\u79cd\u602a\u73b0\u8c61\u4e0d\u662f\u6beb\u65e0\u539f\u56e0\u7684\uff0c\u4e0a\u9762\u5df2\u63d0\u5230<\/span> AAC\u6709\u7248\u6743\u4fdd\u62a4\u529f\u80fd\uff0c\u8fd9\u4e5f\u662f\u4f17\u591a\u5531\u7247\u516c\u53f8\u652f\u6301<\/span> AAC\u7684\u539f\u56e0\uff0c\u8981\u4f7f\u81ea\u5df1\u7684\u64ad\u653e\u5668\u652f\u6301<\/span> AAC\uff0c\u8fd8\u5f97\u652f\u6301\u4ed8\u4e00\u5b9a\u7684\u7248\u6743\u8d39\u6216\u4e13\u5229\u8d39\uff0c\u53e6\u5916\uff0c<\/span> AAC\u7684\u6765\u6e90\u4e5f\u662f\u4e2a\u95ee\u9898\uff0c\u4e0d\u50cf<\/span> MP3\u90a3\u4e48\u5f00\u653e\uff0c\u7f51\u4e0a\u6765\u6e90\u6781\u5c11\uff0c\u6240\u4ee5\u76ee\u524d\u97f3\u9891<\/span> MP4\u64ad\u653e\u5668\u53d1\u5c55\u5c1a\u4e0d\u6210\u719f\uff0c\u9274\u4e8e\u4ee5\u4e0a\u73b0\u72b6\uff0c\u4f17\u5546\u5bb6\u5e72\u8106\u201c\u501f\u5c38\u8fd8\u9b42\u201d\uff0c\u628a<\/span> MP4\u7b49\u540c<\/span> MPEG-4\u7f29\u5199\u800c\u8bba\uff0c\u8fd9\u6837\u4e5f\u6070\u597d\u5e94\u4e86<\/span> MP4\u662f<\/span> MP3\u7684\u4e0b\u4e00\u4ee3\u8fd9\u6761\u89c4\u5f8b\uff0c\u9664\u4e86\u652f\u6301<\/span> MP3\u6240\u5177\u6709\u7684\u97f3\u4e50\u64ad\u653e\u529f\u80fd\u5916\uff0c\u8fd8\u5177\u5907\u5f3a\u5927\u7684<\/span> MPEG-4\u89c6\u9891\u64ad\u653e\u80fd\u529b\uff0c\u53e6\u5916\uff0c\u6070\u597d\u201c<\/span> 4\u201d\u5728\u201c<\/span> 3\u201d\u540e\uff0c\u4ece\u8fd9\u70b9\u51fa\u53d1\uff0c\u628a<\/span> MP4\u7b49\u540c<\/span> MPEG-4\u662f\u5408\u7406\u7684\u3002<\/span> <\/span> <\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"\u7b2c\u4e8c\u90e8\u5206 \u97f3\u9891\u538b\u7f29\u7f16\u7801\u662f\u4ec0\u4e48_\u97f3\u9891\u538b\u7f29\u7b2c\u4e8c\u90e8\u5206\u97f3\u9891\u538b\u7f29\u7f16\u7801\u4e00\uff0e\u6709\u635f(lossy)\/\u65e0\u635f(lossless)\/\u672a\u538b\u7f29(uncompressed)\u97f3\u9891\u683c\u5f0f\u672a...","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"_links":{"self":[{"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/posts\/8515"}],"collection":[{"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/comments?post=8515"}],"version-history":[{"count":0,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/posts\/8515\/revisions"}],"wp:attachment":[{"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/media?parent=8515"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/categories?post=8515"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/tags?post=8515"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}