{"id":1605,"date":"2019-03-09T15:16:06","date_gmt":"2019-03-09T07:16:06","guid":{"rendered":"http:\/\/localhost\/wordpress4\/?p=36"},"modified":"2019-03-09T15:16:06","modified_gmt":"2019-03-09T07:16:06","slug":"%e8%93%9d%e7%89%99%e7%9a%84sbcaacapt-xaptx_llaptx-hd%e6%8c%87%e7%9a%84%e9%83%bd%e6%98%af%e4%bb%80%e4%b9%88","status":"publish","type":"post","link":"https:\/\/www.aoyint.com\/english\/%e8%93%9d%e7%89%99%e7%9a%84sbcaacapt-xaptx_llaptx-hd%e6%8c%87%e7%9a%84%e9%83%bd%e6%98%af%e4%bb%80%e4%b9%88.html","title":{"rendered":"\u84dd\u7259\u7684SBC,AAC,apt-X,aptX_LL,aptX HD\u6307\u7684\u90fd\u662f\u4ec0\u4e48?"},"content":{"rendered":"

ACC\uff08Advanced Audio Coding\uff0c\u9ad8\u7ea7\u97f3\u9891\u7f16\u7801\uff09<\/strong><\/h2>\n

ACC\u662f\u675c\u6bd4\u5b9e\u9a8c\u5ba4\u4e3a\u97f3\u4e50\u793e\u533a\u63d0\u4f9b\u7684\u6280\u672f\uff0c\u662f\u4e00\u79cd\u9ad8\u538b\u7f29\u6bd4\u7684\u7f16\u7801\u7b97\u6cd5\u3002\u5b9e\u9645\u4f53\u9a8c\u4e0a\u90fd\u8ba4\u4e3a\u540c\u6837\u7684\u7801\u7387\u4e0b\u9762\uff0cACC\u7684\u542c\u611f\u6bd4MP3\u597d\uff0capple\u4e0a\u9762ACC\u7684\u97f3\u9891\u5f88\u591a\u3002<\/p>\n

\u6240\u4ee5\u73b0\u5728\u7684iphone\u7684\u97f3\u9891\u4f20\u8f93\u683c\u5f0f\u4e5f\u90fd\u662facc\u683c\u5f0f\uff0c\u7801\u7387\u4e0eSBC\u76f8\u5f53\uff0c\u4f46\u542c\u611f\u636e\u8bf4\u597d\u4e8eSBC\u3002\u56e0\u4e3a\u6ca1\u6709\u505a\u8fc7\u4e25\u8083\u5bf9\u6bd4\uff0c\u6682\u4e14\u8ba4\u4e3a\u7a0d\u5fae\u597d\u4e8eSBC\u3002<\/p>\n

AAC\u53f7\u79f0\u300c\u6700\u5927\u80fd\u5bb9\u7eb348\u901a\u9053\u7684\u97f3\u8f68\uff0c\u91c7\u6837\u7387\u8fbe96 KHz\uff0c\u5e76\u4e14\u5728320Kbps\u7684\u6570\u636e\u901f\u7387\u4e0b\u80fd\u4e3a5.1\u58f0\u9053\u97f3\u4e50\u8282\u76ee\u63d0\u4f9b\u76f8\u5f53\u4e8eITU-R\u5e7f\u64ad\u7684\u54c1\u8d28\u300d\u3002\u548cMP3\u6bd4\u8d77\u6765\uff0c\u5b83\u7684\u97f3\u8d28\u6bd4\u8f83\u597d\uff0c\u4e5f\u80fd\u591f\u8282\u7701\u5927\u7ea630%\u7684\u50a8\u5b58\u7a7a\u95f4\u4e0e\u5e26\u5bbd\u3002\u5b83\u662f\u9075\u5faaMPEG-2\u7684\u89c4\u683c\u6240\u5f00\u53d1\u7684\u6280\u672f\u3002\u677e\u4e0b\u7684mp3\u4ea7\u54c1\u90fd\u91c7\u7528\u4e86\u8fd9\u79cd\u7f16\u7801\u65b9\u5f0f\uff0c\u5f53\u7136\u4e5f\u517c\u5bb9mp3\u683c\u5f0f\uff0c\u53ef\u4ee5\u8bf4aac\u662f\u4e00\u79cd\u975e\u5e38\u597d\u7528\u7684\u97f3\u9891\u683c\u5f0f\uff0c128kbps\u7684aac\u8db3\u4ee5\u548c224kbps\u7684mp3\u6297\u8861\uff0c\u7a7a\u95f4\u5374\u5c0f\u4e86\u5dee\u4e0d\u591a\u4e00\u534a\uff0c\u4f46\u662f\u5728\u7a7a\u95f4\u4e0a\u548c\u7ed3\u6784\u4e0aaac\u548cmp3\u7f16\u7801\u51fa\u6765\u540e\u7684\u98ce\u683c\u4e0d\u592a\u4e00\u6837\u3002<\/p>\n

AAC\u7f16\u7801\u7684\u4e3b\u8981\u6269\u5c55\u540d\u6709\u4e09\u79cd\uff1a<\/p>\n

.AAC – \u4f7f\u7528MPEG-2 Audio Transport Stream\uff08ADTS\uff0c\u53c2\u89c1MPEG-2\uff09\u5bb9\u5668\uff0c\u533a\u522b\u4e8e\u4f7f\u7528MPEG-4\u5bb9\u5668\u7684MP4\/M4A\u683c\u5f0f\uff0c\u5c5e\u4e8e\u4f20\u7edf\u7684AAC\u7f16\u7801\uff08FAAC\u9ed8\u8ba4\u7684\u5c01\u88c5\uff0c\u4f46FAAC\u4ea6\u53ef\u8f93\u51faMPEG-4\u5c01\u88c5\u7684AAC\uff09<\/p>\n

.MP4 – \u4f7f\u7528\u4e86MPEG-4 Part 14\uff08\u7b2c14\u90e8\u5206\uff09\u7684\u7b80\u5316\u7248\u53733GPP Media Release 6 Basic\uff083gp6\uff0c\u53c2\u89c13GP\uff09\u8fdb\u884c\u5c01\u88c5\u7684AAC\u7f16\u7801\uff08Nero AAC\u7f16\u7801\u5668\u4ec5\u80fd\u8f93\u51faMPEG-4\u5c01\u88c5\u7684AAC\uff09\uff1b<\/p>\n

.M4A – \u4e3a\u4e86\u533a\u522b\u7eaf\u97f3\u9891MP4\u6587\u4ef6\u548c\u5305\u542b\u89c6\u9891\u7684MP4\u6587\u4ef6\u800c\u7531\u82f9\u679c\uff08Apple\uff09\u516c\u53f8\u4f7f\u7528\u7684\u6269\u5c55\u540d\uff0cApple iTunes\u5bf9\u7eaf\u97f3\u9891MP4\u6587\u4ef6\u91c7\u7528\u4e86\u201c.M4A\u201d\u547d\u540d\u3002M4A\u7684\u672c\u8d28\u548c\u97f3\u9891MP4\u76f8\u540c\uff0c\u6545\u97f3\u9891MP4\u6587\u4ef6\u4ea6\u53ef\u76f4\u63a5\u66f4\u6539\u6269\u5c55\u540d\u4e3aM4A\u3002<\/p>\n

SBC \uff08Sub-band coding\uff0c\u5b50\u5e26\u7f16\u7801\uff09<\/strong><\/h2>\n

\u6700\u65e9\u7684\u683c\u5f0f\u5e94\u8be5\u662fSBC\uff0cSBC\u662fA2DP\uff08Advanced Audio DistribuTI<\/a>on Profile\uff0c\u84dd\u7259\u97f3\u9891\u4f20\u8f93\u534f\u8bae\uff09\u534f\u8bae\u5f3a\u5236\u89c4\u5b9a\u7684\u7f16\u7801\u683c\u5f0f\u3002\u6240\u6709\u7684\u84dd\u7259\u90fd\u4f1a\u652f\u6301\u8fd9\u4e2a\u534f\u8bae\uff0c\u6240\u4ee5\u6240\u6709\u7684\u84dd\u7259\u97f3\u9891\u82af\u7247\u4e5f\u4f1a\u652f\u6301\u8fd9\u4e2a\u534f\u8bae\u3002SBC\u7f16\u7801\u5728\u4f20\u8f93\u65f6\u7684\u7801\u7387\u5177\u4f53\u53c2\u6570\u672a\u627e\u5230\uff0c\u6839\u636esony\u5b98\u7f51\u5ba3\u4f20\u7ed9\u51fa\u7684\u8d44\u6599\uff0c\u662f\uff1a328Kbps\uff0c44.1KHZ\u3002<\/p>\n

\u8fd9\u4e2a\u7801\u7387\u5176\u5b9e\u548c\u9ad8\u54c1\u8d28\u7684MP3\u5dee\u4e0d\u591a\u3002\u4f46\u56e0\u4e3a\u84dd\u7259\u4f20\u8f93\u4e2d\u95f4\u8bbe\u5907\u662f\u9700\u8981\u8f6c\u7801\uff0c\u4ee5MP3\u6587\u4ef6\u4e3a\u4f8b\uff0c\u8f6c\u7801\u8fc7\u7a0b\u4e3a MP3-\u300bPCM-\u300bSBC-\u300bPCM\uff0c \u6bcf\u6b21\u8f6c\u7801\u90fd\u4f1a\u635f\u5931\u7ec6\u8282\uff0c\u5bfc\u81f4SBC\u7684\u542c\u611f\u4f1a\u6bd4\u539f\u59cb\u7684MP3\u8981\u5dee\u3002<\/p>\n

\u5148\u901a\u8fc7\u4e00\u7ec4\u5e26\u901a\u6ee4\u6ce2\u5668\u5c06\u8f93\u5165\u4fe1\u53f7\u5206\u6210\u82e5\u5e72\u4e2a\u5728\u4e0d\u540c\u9891\u6bb5\u4e0a\u7684\u5b50\u5e26\u4fe1\u53f7\uff0c\u7136\u540e\u5c06\u8fd9\u4e9b\u4fe1\u53f7\u7ecf\u8fc7\u9891\u7387\u642c\u79fb\u8f6c\u53d8\u6210\u57fa\u5e26\u4fe1\u53f7\uff0c\u518d\u5bf9\u5b83\u4eec\u5206\u522b\u53d6\u6837\u3002\u53d6\u6837\u540e\u7684\u4fe1\u53f7\u7ecf\u8fc7\u91cf\u5316\u3001\u7f16\u7801\uff0c\u5e76\u5408\u6210\u4e00\u4e2a\u603b\u7684\u7801\u6d41\u4f20\u9001\u7ed9\u63a5\u6536\u7aef\u3002\u5728\u63a5\u6536\u7aef\uff0c\u9996\u5148\u628a\u7801\u6d41\u5206\u6210\u4e0e\u539f\u6765\u7684\u5404\u5b50\u5e26\u4fe1\u53f7\u76f8\u5bf9\u5e94\u7684\u5b50\u5e26\u7801\u6d41\uff0c\u7136\u540e\u89e3\u7801\u3001\u5c06\u9891\u8c31\u642c\u81f3\u539f\u6765\u7684\u4f4d\u7f6e\uff0c\u6700\u540e\u7ecf\u5e26\u901a\u6ee4\u6ce2\u3001\u76f8\u52a0\u5f97\u5230\u91cd\u5efa\u7684\u4fe1\u53f7\u3002<\/p>\n

\"\u84dd\u7259\u97f3\u9891\u4f20\u8f93\u683c\u5f0f\uff1aACC\uff0cSBC\uff0cAPTX\u548cLDAC\"<\/a><\/p>\n

\u4f18\u70b9\uff1a\u53ef\u4ee5\u5229\u7528\u4eba\u8033\uff08\u6216\u4eba\u773c\uff09\u5bf9\u4e0d\u540c\u9891\u7387\u4fe1\u53f7\u7684\u611f\u77e5\u7075\u654f\u5ea6\u4e0d\u540c\u7684\u7279\u6027\uff0c\u5728\u4eba\u7684\u542c\u89c9\uff08\u6216\u89c6\u89c9\uff09\u4e0d\u654f\u611f\u7684\u90e8\u4f4d\u91c7\u7528\u8f83\u7c97\u7cd9\u7684\u91cf\u5316\uff0c\u5728\u654f\u611f\u90e8\u4f4d\u91c7\u7528\u8f83\u7ec6\u7684\u91cf\u5316\uff0c\u4ee5\u83b7\u5f97\u66f4\u597d\u7684\u4e3b\u89c2\u542c\u89c9\uff08\u89c6\u89c9\uff09\u6548\u679c\u3002\u4f8b\u5982\uff0c\u8bed\u97f3\u7684\u57fa\u97f3\u548c\u5171\u632f\u5cf0\u4e3b\u8981\u96c6\u4e2d\u5728\u4f4e\u9891\u6bb5\uff0c\u56e0\u6b64\u53ef\u5206\u914d\u8f83\u591a\u7684\u6bd4\u7279\u6765\u8868\u793a\u5176\u6837\u503c\uff1b\u800c\u5bf9\u51fa\u73b0\u6469\u64e6\u97f3\u548c\u7c7b\u4f3c\u6469\u64e6\u566a\u58f0\u7684\u9ad8\u9891\u6bb5\u53ef\u4ee5\u5206\u914d\u8f83\u5c11\u7684\u6bd4\u7279\uff0c\u4ece\u800c\u53ef\u4ee5\u5145\u5206\u5730\u538b\u7f29\u8bed\u97f3\u6570\u636e\u3002<\/p>\n

\u5404\u5b50\u5e26\u7684\u91cf\u5316\u566a\u58f0\u90fd\u675f\u7f1a\u5728\u672c\u5b50\u5e26\u5185\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u907f\u514d\u80fd\u91cf\u8f83\u5c0f\u7684\u9891\u5e26\u5185\u7684\u4fe1\u53f7\u88ab\u5176\u5b83\u9891\u6bb5\u4e2d\u7684\u91cf\u5316\u566a\u58f0\u6240\u63a9\u76d6\u3002<\/p>\n

\u6ee4\u6ce2\u5668\u7684\u5177\u4f53\u5b9e\u73b0\u4e0d\u53ef\u80fd\u662f\u7406\u60f3\u7684\u5e26\u901a\uff0c\u5176\u5e45\u5ea6\u5f71\u54cd\u4e0d\u53ef\u907f\u514d\u5730\u5e26\u6709\u6709\u9650\u7684\u6eda\u964d\u3002\u56e0\u6b64\u5728\u5212\u5206\u5b50\u5e26\u65f6\uff0c\u53ea\u80fd\u4f7f\u5b50\u5e26\u95f4\u6709\u4ea4\u53e0\u6216\u8005\u4f7f\u5b50\u5e26\u95f4\u6709\u4e00\u5b9a\u7684\u95f4\u9699\u3002\u524d\u8005\u82e5\u6309\u5948\u6c0f\u9891\u7387\u53d6\u6837\u5c06\u4f1a\u4ea7\u751f\u6df7\u53e0\u5931\u771f\uff0c\u800c\u540e\u8005\u4f7f\u539f\u6709\u7684\u90e8\u5206\u9891\u5e26\u7ecf\u6ee4\u6ce2\u800c\u635f\u5931\u6389\uff0c\u91cd\u5efa\u7684\u4fe1\u53f7\u4f1a\u6709\u5931\u771f\u3002\u9488\u5bf9\u8fd9\u4e2a\u95ee\u9898\u7684\u89e3\u51b3\u65b9\u6cd5\u6709\u6b63\u4ea4\u955c\u50cf\u6ee4\u6ce2\u6cd5\u548c\u65f6\u57df\u6df7\u53e0\u6d88\u9664\u6cd5\u3002<\/p>\n

APTX<\/strong><\/h2>\n

APTX\u662fCSR\u516c\u53f8\u7684\u4e13\u5229\u7f16\u7801\u7b97\u6cd5\uff0c\u5728\u88ab\u9ad8\u901a<\/u><\/a>\u6536\u8d2d\u540e\uff0cAPTX\u5728\u5b89\u5353\u624b\u673a\u91cc\u9762\u63a8\u5e7f\u529b\u5ea6\u5f88\u5927\u3002<\/p>\n

\u6839\u636e\u5b98\u7f51\u4ecb\u7ecd\uff0captX\u5206\u4e3a\u4e09\u79cd\uff1aaptX\uff0captX HD\u548captX Low Latency\uff0c\u6839\u636e\u540d\u5b57\u53ef\u4ee5\u8ba4\u4e3a\uff0c\u5206\u522b\u662f\u4f20\u7edfaptX\uff0c\u9ad8\u54c1\u8d28aptX\uff08\u4f30\u8ba1\u662f\u63d0\u9ad8\u7801\u7387\uff09\u548c\u4f4e\u65f6\u95f4\u5ef6\u8fdfaptX\uff08\u5728\u770b\u89c6\u9891\u548c\u6253CS\u7684\u65f6\u5019\u65f6\u95f4\u5ef6\u8fdf\u5c31\u5f88\u91cd\u8981\u4e86\uff09\u3002<\/p>\n

The Qualcomm\u00ae aptX\u2122 audio coding algorithm originated in the late 1980s at Queen\u2019s University Belfast. This innovaTI<\/a>ve work was focused on bit rate reducTI<\/a>on and achieved significant bit rate efficiencies while preserving audio quality.<\/p>\n

aptX has been the best kept secret of the professional audio industry\uff0c used by major public broadcasters and film studios around the world. Now available on leading consumer devices\uff0c aptX enables music lovers to enjoy the rich listening experience that aptX delivers.<\/p>\n

\u9ad8\u901a\u7684\u610f\u601d\u5927\u6982\u662f\uff0captX\u662f\u6211\u5bb6\u7684\uff0c\u7136\u540e\u662f\u5973\u738b\u5927\u5b66\u5728\u4e0a\u4e16\u7eaa\u516b\u5341\u5e74\u4ee3\u5f00\u59cb\u7814\u53d1\u7684\u97f3\u9891\u7f16\u7801\u7b97\u6cd5\uff0c\u8fd9\u79cd\u7b97\u6cd5\u5177\u6709\u5f88\u9ad8\u7684\u6bd4\u7279\u7387\u6548\u7387\u7684\u540c\u65f6\u4fdd\u6301\u4e86\u5f88\u9ad8\u7684\u97f3\u9891\u8d28\u91cf\u3002aptX\u4f5c\u4e3a\u4e13\u4e1a\u7684\u65e0\u7ebf\u97f3\u9891\u4f20\u8f93\u65b9\u6848\uff0c\u88ab\u5e94\u7528\u5728\u516c\u5171\u5e7f\u64ad\u548c\u7535\u5f71\u97f3\u54cd\u91cc\u9762\uff0c\u73b0\u5728\u7ec8\u4e8e\u8981\u653e\u5728\u6d88\u8d39\u4ea7\u54c1\u91cc\u9762\u4e86\u3002<\/p>\n

\u6240\u4ee5aptX\u5176\u5b9e\u4f20\u8f93\u7801\u7387\u4f30\u8ba1\u4e5f\u4e0d\u9ad8\uff0c\u53ef\u80fd\u548c\u524d\u9762\u4e24\u8005\u5dee\u4e0d\u591a\uff0c\u4f46\u662f\u5f97\u76ca\u4e8e\u9ad8\u6548\u7684\u7f16\u7801\uff0c\u4f7f\u5f97\u58f0\u97f3\u4fdd\u7559\u7684\u7ec6\u8282\u66f4\u591a\uff0c\u5b9e\u9645\u542c\u611f\u597d\u4e8e\u524d\u9762\u4e24\u8005\uff0captX\u7684\u5ba3\u4f20\u4e5f\u662f\u79f0\u5176\u53ef\u4ee5\u8fbe\u5230CD\u7ea7\u522b\u7684\u542c\u611f\u3002<\/p>\n

Apt-X\u662f\u4e00\u79cd\u57fa\u4e8e\u5b50\u5e26ADPCM\uff08SB-ADPCM\uff09\u6280\u672f\u7684\u6570\u5b57\u97f3\u9891\u538b\u7f29\u7b97\u6cd5\u3002\u539f\u59cb\u7b97\u6cd5\u7531Stephen Smyth \u535a\u58eb\u4e8e20\u4e16\u7eaa80\u5e74\u4ee3\u63d0\u51fa\u3002\u7531Audio Processing Technology\uff08\u73b0\u5df2\u88abCSR\u5408\u5e76\uff09\u516c\u53f8\u53d1\u5c55\u5e76\u547d\u540d\u4e3aapt-X\u3002\u6700\u521d\u7528\u4e8e\u4e13\u4e1a\u97f3\u9891\u4e0e\u5e7f\u64ad\u9886\u57df\u3002\u8fd1\u51e0\u5e74\uff0c\u5728 Bluetooth\u65e0\u7ebf\u97f3\u9891\u4f20\u8f93\u9886\u57dfapt-x\u7531\u4e8e\u5176\u4f4e\u5ef6\u65f6\uff0c\u5bb9\u9519\u6027\u597d\uff0c\u9ad8\u97f3\u8d28\u7b49\u4f18\u70b9\u5927\u6709\u53d6\u4ee3SBC\uff08Sub-band Coding\uff09\u4e4b\u52bf\u3002\u76ee\u524dapt-x\u5bb6\u65cf\u4e2d\u5b9e\u7528\u7684\u6709\u6709aptX Bluetooth\uff0c aptX Enhanced\uff0c aptX Live\uff082007\u5e74\u63a8\u51fa\uff09\uff0captX Lossless\uff082009\u5e74\u63a8\u51fa\uff09\u3002apt-X\u5177\u6709\u4ee5\u4e0b\u7279\u70b9\uff1a<\/p>\n

\u6240\u9700\u9891\u5bbd\uff1a10Hz to 22.5 kHz\uff0c56kbit\/s to 576 kbit\/s\uff0816 bit 7.5 kHz mono to 24-bit\uff0c 22.5kHz stereo\uff09<\/p>\n

Apt-X\u7684\u4f7f\u7528\u4e3b\u8981\u96c6\u4e2d\u5728\u84dd\u7259\u8033\u673a\u548c\u84dd\u7259\u97f3\u7bb1\uff0c\u5176\u7ec8\u7aef\u548c\u84dd\u7259\u8033\u673a \u97f3\u7bb1\u90fd\u5fc5\u987b\u652f\u6301Apt-X\u624d\u80fd\u53d1\u6325\u5176\u529f\u80fd\u3002\u84dd\u7259\u97f3\u9891\u4f20\u8f93\u5b58\u5728\u4e00\u5b9a\u5ef6\u8fdf\u3002\u6700\u5927\u7684\u611f\u53d7\u662f\u5f71\u97f3\u5ef6\u8fdf\u53ef\u4ee5\u964d\u5230\u6700\u4f4e\u3002<\/p>\n

aptX LL\u5219\u662f\u4e3b\u6253\u4f4e\u5ef6\u8fdf\uff0c\u4e3b\u8981\u7279\u5f81\u662f\u80fd\u8fbe\u523040ms\u4ee5\u4e0b\u7684\u5ef6\u8fdf\u3002\u6211\u4eec\u77e5\u9053\u4eba\u80fd\u611f\u53d7\u5230\u7684\u5ef6\u8fdf\u6781\u9650\u662f70ms\uff0c\u8fbe\u523040ms\u4e5f\u5c31\u662f\u6211\u4eec\u662f\u611f\u89c9\u4e0d\u5230\u5ef6\u8fdf\u7684\u3002\u8fd9\u4e2a\u6982\u5ff5\u6709\u70b9\u7c7b\u4f3c\u5f53\u521d\u82f9\u679c\u63a8\u51fa\u89c6\u7f51\u819c\u5c4f\u5e55\u3002<\/p>\n

aptX HD\u7684\u51fa\u73b0\u548c\u9ad8\u6e05\u97f3\u9891\u7684\u4eba\u6c14\u63d0\u5347\u6709\u5173\uff0c\u5b83\u80fd\u591f\u652f\u6301\u9ad8\u8fbe24-bit\/48kHz\u7684\u97f3\u9891\uff0c\u4e5f\u5c31\u662f\u8bf4\u6211\u4eec\u5c06\u53ef\u4ee5\u7528\u65e0\u7ebf\u8bbe\u5907\u542c\u5230\u97f3\u8d28\u66f4\u68d2\u7684\u97f3\u4e50\u3002\u6bd4\u8d77\u4f20\u7edfaptX\u90a3352kbps\u7684\u6bd4\u7387\uff0captX HD\u589e\u5927\u5230576kbps\u7684\u6bd4\u7279\u7387\u65e0\u7591\u66f4\u6709\u4f18\u52bf\u3002apt-X\u76ee\u524d\u88ab\u5206\u4e3a\u4e09\u7c7b\uff0c\u666e\u901aapt-X\uff0capt-X HD\u548capt-X Low Latency\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

ACC\uff08Advanced Audio Coding\uff0c\u9ad8\u7ea7\u97f3\u9891\u7f16\u7801\uff09 ACC\u662f\u675c\u6bd4\u5b9e\u9a8c\u5ba4\u4e3a\u97f3\u4e50\u793e\u533a\u63d0\u4f9b\u7684\u6280\u672f\uff0c\u662f\u4e00\u79cd\u9ad8\u538b\u7f29\u6bd4\u7684\u7f16\u7801\u7b97\u6cd5\u3002\u5b9e\u9645\u4f53\u9a8c\u4e0a\u90fd\u8ba4\u4e3a\u540c\u6837\u7684\u7801\u7387\u4e0b\u9762\uff0cACC\u7684\u542c\u611f\u6bd4MP3\u597d\uff0capple\u4e0a\u9762ACC\u7684\u97f3\u9891\u5f88\u591a\u3002 \u6240\u4ee5\u73b0\u5728\u7684iphone\u7684\u97f3\u9891\u4f20\u8f93\u683c\u5f0f\u4e5f\u90fd\u662facc\u683c\u5f0f\uff0c\u7801\u7387\u4e0eSBC\u76f8\u5f53\uff0c\u4f46\u542c\u611f\u636e\u8bf4\u597d\u4e8eSBC\u3002\u56e0\u4e3a\u6ca1\u6709\u505a\u8fc7\u4e25\u8083\u5bf9\u6bd4\uff0c\u6682\u4e14\u8ba4\u4e3a\u7a0d\u5fae\u597d\u4e8eSBC\u3002 AAC\u53f7\u79f0\u300c\u6700\u5927\u80fd\u5bb9\u7eb348\u901a\u9053\u7684\u97f3\u8f68\uff0c\u91c7\u6837\u7387\u8fbe96 KHz\uff0c\u5e76\u4e14\u5728320Kbps\u7684\u6570\u636e\u901f\u7387\u4e0b\u80fd\u4e3a5.1\u58f0\u9053\u97f3\u4e50\u8282\u76ee\u63d0\u4f9b\u76f8\u5f53\u4e8eITU-R\u5e7f\u64ad\u7684\u54c1\u8d28\u300d\u3002\u548cMP3\u6bd4\u8d77\u6765\uff0c\u5b83\u7684\u97f3\u8d28\u6bd4\u8f83\u597d\uff0c\u4e5f\u80fd\u591f\u8282\u7701\u5927\u7ea630%\u7684\u50a8\u5b58\u7a7a\u95f4\u4e0e\u5e26\u5bbd\u3002\u5b83\u662f\u9075\u5faaMPEG-2\u7684\u89c4\u683c\u6240\u5f00\u53d1\u7684\u6280\u672f\u3002\u677e\u4e0b\u7684mp3\u4ea7\u54c1\u90fd\u91c7\u7528\u4e86\u8fd9\u79cd\u7f16\u7801\u65b9\u5f0f\uff0c\u5f53\u7136\u4e5f\u517c\u5bb9mp3\u683c\u5f0f\uff0c\u53ef\u4ee5\u8bf4aac\u662f\u4e00\u79cd\u975e\u5e38\u597d\u7528\u7684\u97f3\u9891\u683c\u5f0f\uff0c128kbps\u7684aac\u8db3\u4ee5\u548c224kbps\u7684mp3\u6297\u8861\uff0c\u7a7a\u95f4\u5374\u5c0f\u4e86\u5dee\u4e0d\u591a\u4e00\u534a\uff0c\u4f46\u662f\u5728\u7a7a\u95f4\u4e0a\u548c\u7ed3\u6784\u4e0aaac\u548cmp3\u7f16\u7801\u51fa\u6765\u540e\u7684\u98ce\u683c\u4e0d\u592a\u4e00\u6837\u3002 AAC\u7f16\u7801\u7684\u4e3b\u8981\u6269\u5c55\u540d\u6709\u4e09\u79cd\uff1a .AAC – \u4f7f\u7528MPEG-2 Audio Transport Stream\uff08ADTS\uff0c\u53c2\u89c1MPEG-2\uff09\u5bb9\u5668\uff0c\u533a\u522b\u4e8e\u4f7f\u7528MPEG-4\u5bb9\u5668\u7684MP4\/M4A\u683c\u5f0f\uff0c\u5c5e\u4e8e\u4f20\u7edf\u7684AAC\u7f16\u7801\uff08FAAC\u9ed8\u8ba4\u7684\u5c01\u88c5\uff0c\u4f46FAAC\u4ea6\u53ef\u8f93\u51faMPEG-4\u5c01\u88c5\u7684AAC\uff09 .MP4 – \u4f7f\u7528\u4e86MPEG-4 Part 14\uff08\u7b2c14\u90e8\u5206\uff09\u7684\u7b80\u5316\u7248\u53733GPP Media Release 6 Basic\uff083gp6\uff0c\u53c2\u89c13GP\uff09\u8fdb\u884c\u5c01\u88c5\u7684AAC\u7f16\u7801\uff08Nero AAC\u7f16\u7801\u5668\u4ec5\u80fd\u8f93\u51faMPEG-4\u5c01\u88c5\u7684AAC\uff09\uff1b .M4A – \u4e3a\u4e86\u533a\u522b\u7eaf\u97f3\u9891MP4\u6587\u4ef6\u548c\u5305\u542b\u89c6\u9891\u7684MP4\u6587\u4ef6\u800c\u7531\u82f9\u679c\uff08Apple\uff09\u516c\u53f8\u4f7f\u7528\u7684\u6269\u5c55\u540d\uff0cApple 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\u8fd9\u4e2a\u7801\u7387\u5176\u5b9e\u548c\u9ad8\u54c1\u8d28\u7684MP3\u5dee\u4e0d\u591a\u3002\u4f46\u56e0\u4e3a\u84dd\u7259\u4f20\u8f93\u4e2d\u95f4\u8bbe\u5907\u662f\u9700\u8981\u8f6c\u7801\uff0c\u4ee5MP3\u6587\u4ef6\u4e3a\u4f8b\uff0c\u8f6c\u7801\u8fc7\u7a0b\u4e3a MP3-\u300bPCM-\u300bSBC-\u300bPCM\uff0c \u6bcf\u6b21\u8f6c\u7801\u90fd\u4f1a\u635f\u5931\u7ec6\u8282\uff0c\u5bfc\u81f4SBC\u7684\u542c\u611f\u4f1a\u6bd4\u539f\u59cb\u7684MP3\u8981\u5dee\u3002 \u5148\u901a\u8fc7\u4e00\u7ec4\u5e26\u901a\u6ee4\u6ce2\u5668\u5c06\u8f93\u5165\u4fe1\u53f7\u5206\u6210\u82e5\u5e72\u4e2a\u5728\u4e0d\u540c\u9891\u6bb5\u4e0a\u7684\u5b50\u5e26\u4fe1\u53f7\uff0c\u7136\u540e\u5c06\u8fd9\u4e9b\u4fe1\u53f7\u7ecf\u8fc7\u9891\u7387\u642c\u79fb\u8f6c\u53d8\u6210\u57fa\u5e26\u4fe1\u53f7\uff0c\u518d\u5bf9\u5b83\u4eec\u5206\u522b\u53d6\u6837\u3002\u53d6\u6837\u540e\u7684\u4fe1\u53f7\u7ecf\u8fc7\u91cf\u5316\u3001\u7f16\u7801\uff0c\u5e76\u5408\u6210\u4e00\u4e2a\u603b\u7684\u7801\u6d41\u4f20\u9001\u7ed9\u63a5\u6536\u7aef\u3002\u5728\u63a5\u6536\u7aef\uff0c\u9996\u5148\u628a\u7801\u6d41\u5206\u6210\u4e0e\u539f\u6765\u7684\u5404\u5b50\u5e26\u4fe1\u53f7\u76f8\u5bf9\u5e94\u7684\u5b50\u5e26\u7801\u6d41\uff0c\u7136\u540e\u89e3\u7801\u3001\u5c06\u9891\u8c31\u642c\u81f3\u539f\u6765\u7684\u4f4d\u7f6e\uff0c\u6700\u540e\u7ecf\u5e26\u901a\u6ee4\u6ce2\u3001\u76f8\u52a0\u5f97\u5230\u91cd\u5efa\u7684\u4fe1\u53f7\u3002 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