{"id":780,"date":"2026-01-25T09:50:29","date_gmt":"2026-01-25T01:50:29","guid":{"rendered":"https:\/\/ixriver.com\/?p=780"},"modified":"2026-01-25T09:50:29","modified_gmt":"2026-01-25T01:50:29","slug":"%e9%9f%b3%e9%a2%91%e7%bc%96%e7%a0%81","status":"publish","type":"post","link":"https:\/\/ixriver.com\/?p=780","title":{"rendered":"\u97f3\u9891\u7f16\u7801"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_65 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title \" >\u76ee\u5f55<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/ixriver.com\/?p=780\/#%E9%9F%B3%E9%A2%91%E7%BC%96%E7%A0%81\" title=\"\u97f3\u9891\u7f16\u7801\">\u97f3\u9891\u7f16\u7801<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/ixriver.com\/?p=780\/#%E7%BC%96%E7%A0%81%E6%A0%87%E5%87%86%E6%A6%82%E8%BF%B0\" title=\"\u7f16\u7801\u6807\u51c6\u6982\u8ff0\">\u7f16\u7801\u6807\u51c6\u6982\u8ff0<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/ixriver.com\/?p=780\/#%E7%BC%96%E7%A0%81%E6%A0%B8%E5%BF%83%E6%A6%82%E5%BF%B5\" title=\"\u7f16\u7801\u6838\u5fc3\u6982\u5ff5\">\u7f16\u7801\u6838\u5fc3\u6982\u5ff5<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/ixriver.com\/?p=780\/#%E5%85%B3%E9%94%AE%E5%8F%82%E6%95%B0\" title=\"\u5173\u952e\u53c2\u6570\">\u5173\u952e\u53c2\u6570<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/ixriver.com\/?p=780\/#%E7%BC%96%E7%A0%81%E5%99%A8%E7%89%B9%E5%AE%9A%E5%8F%82%E6%95%B0\" title=\"\u7f16\u7801\u5668\u7279\u5b9a\u53c2\u6570\">\u7f16\u7801\u5668\u7279\u5b9a\u53c2\u6570<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/ixriver.com\/?p=780\/#%E9%87%87%E6%A0%B7%E7%8E%87%E8%BD%AC%E6%8D%A2\" title=\"\u91c7\u6837\u7387\u8f6c\u6362\">\u91c7\u6837\u7387\u8f6c\u6362<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/ixriver.com\/?p=780\/#%E5%A3%B0%E9%81%93%E5%A4%84%E7%90%86\" title=\"\u58f0\u9053\u5904\u7406\">\u58f0\u9053\u5904\u7406<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/ixriver.com\/?p=780\/#%E7%BC%96%E7%A0%81%E5%BB%B6%E8%BF%9F\" title=\"\u7f16\u7801\u5ef6\u8fdf\">\u7f16\u7801\u5ef6\u8fdf<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/ixriver.com\/?p=780\/#%E7%BC%96%E7%A0%81%E5%99%A8%E5%AE%9E%E7%8E%B0%E8%AF%A6%E8%A7%A3\" title=\"\u7f16\u7801\u5668\u5b9e\u73b0\u8be6\u89e3\">\u7f16\u7801\u5668\u5b9e\u73b0\u8be6\u89e3<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/ixriver.com\/?p=780\/#Opus%E7%BC%96%E7%A0%81%E5%99%A8\" title=\"Opus\u7f16\u7801\u5668\">Opus\u7f16\u7801\u5668<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/ixriver.com\/?p=780\/#%E8%BD%AF%E4%BB%B6%E7%BC%96%E7%A0%81%E5%99%A8\" title=\"\u8f6f\u4ef6\u7f16\u7801\u5668\">\u8f6f\u4ef6\u7f16\u7801\u5668<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/ixriver.com\/?p=780\/#%E7%A1%AC%E4%BB%B6%E7%BC%96%E7%A0%81%E5%99%A8%E6%94%AF%E6%8C%81%E6%83%85%E5%86%B5\" title=\"\u786c\u4ef6\u7f16\u7801\u5668\u652f\u6301\u60c5\u51b5\">\u786c\u4ef6\u7f16\u7801\u5668\u652f\u6301\u60c5\u51b5<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/ixriver.com\/?p=780\/#AAC%E7%BC%96%E7%A0%81%E5%99%A8\" title=\"AAC\u7f16\u7801\u5668\">AAC\u7f16\u7801\u5668<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/ixriver.com\/?p=780\/#%E8%BD%AF%E4%BB%B6%E7%BC%96%E7%A0%81%E5%99%A8-2\" title=\"\u8f6f\u4ef6\u7f16\u7801\u5668\">\u8f6f\u4ef6\u7f16\u7801\u5668<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/ixriver.com\/?p=780\/#%E7%A1%AC%E4%BB%B6%E7%BC%96%E7%A0%81%E5%99%A8%E6%94%AF%E6%8C%81%E6%83%85%E5%86%B5-2\" title=\"\u786c\u4ef6\u7f16\u7801\u5668\u652f\u6301\u60c5\u51b5\">\u786c\u4ef6\u7f16\u7801\u5668\u652f\u6301\u60c5\u51b5<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/ixriver.com\/?p=780\/#AAC%E7%BC%96%E7%A0%81%E5%99%A8%E9%80%89%E6%8B%A9%E5%BB%BA%E8%AE%AE\" title=\"AAC\u7f16\u7801\u5668\u9009\u62e9\u5efa\u8bae\">AAC\u7f16\u7801\u5668\u9009\u62e9\u5efa\u8bae<\/a><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h1><span class=\"ez-toc-section\" id=\"%E9%9F%B3%E9%A2%91%E7%BC%96%E7%A0%81\"><\/span>\u97f3\u9891\u7f16\u7801<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<h2><span class=\"ez-toc-section\" id=\"%E7%BC%96%E7%A0%81%E6%A0%87%E5%87%86%E6%A6%82%E8%BF%B0\"><\/span>\u7f16\u7801\u6807\u51c6\u6982\u8ff0<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>AAC\uff08Advanced Audio Coding\uff09<\/strong><br \/>\n&#8211; <strong>\u7f16\u7801\u539f\u7406<\/strong>\uff1a\u57fa\u4e8eMDCT\uff08\u6539\u8fdb\u79bb\u6563\u4f59\u5f26\u53d8\u6362\uff09\u7684\u611f\u77e5\u7f16\u7801<br \/>\n&#8211; <strong>Profile<\/strong>\uff1aLC\uff08Low Complexity\uff09\u3001HE\uff08High Efficiency\uff09\u3001HEv2\u7b49<br \/>\n&#8211; <strong>\u7801\u7387\u8303\u56f4<\/strong>\uff1a32kbps-320kbps\uff0c\u5e38\u7528128kbps<br \/>\n&#8211; <strong>\u7279\u70b9<\/strong>\uff1a\u538b\u7f29\u7387\u9ad8\uff0c\u8d28\u91cf\u597d\uff0c\u5e7f\u6cdb\u652f\u6301<br \/>\n&#8211; <strong>\u5e94\u7528\u573a\u666f<\/strong>\uff1a\u97f3\u4e50\u6d41\u5a92\u4f53\u3001\u89c6\u9891\u97f3\u9891\u8f68\u9053\u3001\u5e7f\u64ad<\/p>\n<p><strong>Opus<\/strong><br \/>\n&#8211; <strong>\u7f16\u7801\u539f\u7406<\/strong>\uff1a\u7ed3\u5408CELP\uff08\u8bed\u97f3\u7f16\u7801\uff09\u548cMDCT\uff08\u97f3\u9891\u7f16\u7801\uff09<br \/>\n&#8211; <strong>\u7801\u7387\u8303\u56f4<\/strong>\uff1a6kbps-510kbps\uff0c\u8bed\u97f3\u5e38\u752832kbps\uff0c\u97f3\u4e50\u5e38\u7528128kbps<br \/>\n&#8211; <strong>\u5ef6\u8fdf\u7279\u6027<\/strong>\uff1a\u53ef\u914d\u7f6e\u5ef6\u8fdf\uff082.5ms-60ms\uff09\uff0c\u4f4e\u5ef6\u8fdf\u6a21\u5f0f\u9002\u5408\u5b9e\u65f6\u901a\u4fe1<br \/>\n&#8211; <strong>\u7279\u70b9<\/strong>\uff1a\u538b\u7f29\u7387\u9ad8\uff0c\u5ef6\u8fdf\u4f4e\uff0c\u5f00\u6e90\u514d\u8d39<br \/>\n&#8211; <strong>\u5e94\u7528\u573a\u666f<\/strong>\uff1aWebRTC\u3001VoIP\u3001\u5b9e\u65f6\u901a\u4fe1\u3001\u97f3\u4e50\u6d41\u5a92\u4f53<\/p>\n<p><strong>G.711\/G.722<\/strong><br \/>\n&#8211; <strong>G.711<\/strong>\uff1a\u5bf9\u6570PCM\u7f16\u7801\uff08A-law\u6216\u03bc-law\uff09\uff0c64kbps\uff0c\u6709\u538b\u7f29\u4f46\u8d28\u91cf\u63a5\u8fd1PCM<br \/>\n&#8211; <strong>G.722<\/strong>\uff1a\u5b50\u5e26ADPCM\u7f16\u7801\uff0c48\/56\/64kbps<br \/>\n&#8211; <strong>\u7279\u70b9<\/strong>\uff1a\u5ef6\u8fdf\u6781\u4f4e\uff0c\u8d28\u91cf\u4e00\u822c<br \/>\n&#8211; <strong>\u5e94\u7528\u573a\u666f<\/strong>\uff1a\u4f20\u7edf\u7535\u8bdd\u7cfb\u7edf\u3001VoIP<\/p>\n<p><strong>MP3\uff08MPEG-1 Audio Layer 3\uff09<\/strong><br \/>\n&#8211; <strong>\u7f16\u7801\u539f\u7406<\/strong>\uff1a\u57fa\u4e8eMDCT\u548c\u611f\u77e5\u7f16\u7801<br \/>\n&#8211; <strong>\u7279\u70b9<\/strong>\uff1a\u5e7f\u6cdb\u652f\u6301\uff0c\u4f46\u538b\u7f29\u7387\u4e0d\u5982AAC<br \/>\n&#8211; <strong>\u5e94\u7528\u573a\u666f<\/strong>\uff1a\u97f3\u4e50\u5b58\u50a8\u3001\u64ad\u653e<\/p>\n<table>\n<thead>\n<tr>\n<th>\u7f16\u7801\u6807\u51c6<\/th>\n<th>\u7801\u7387\u8303\u56f4<\/th>\n<th>\u538b\u7f29\u7387<\/th>\n<th>\u5ef6\u8fdf<\/th>\n<th>\u8d28\u91cf<\/th>\n<th>\u517c\u5bb9\u6027<\/th>\n<th>\u4e13\u5229<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>AAC<\/td>\n<td>32-320kbps<\/td>\n<td>\u9ad8<\/td>\n<td>\u4e2d\u7b49<\/td>\n<td>\u4f18\u79c0<\/td>\n<td>\u4f18\u79c0<\/td>\n<td>\u6709<\/td>\n<\/tr>\n<tr>\n<td>Opus<\/td>\n<td>6-510kbps<\/td>\n<td>\u5f88\u9ad8<\/td>\n<td>\u4f4e<\/td>\n<td>\u4f18\u79c0<\/td>\n<td>\u826f\u597d<\/td>\n<td>\u65e0<\/td>\n<\/tr>\n<tr>\n<td>G.711<\/td>\n<td>64kbps<\/td>\n<td>\u4f4e<\/td>\n<td>\u6781\u4f4e<\/td>\n<td>\u4e00\u822c<\/td>\n<td>\u4f18\u79c0<\/td>\n<td>\u65e0<\/td>\n<\/tr>\n<tr>\n<td>G.722<\/td>\n<td>48-64kbps<\/td>\n<td>\u4f4e<\/td>\n<td>\u6781\u4f4e<\/td>\n<td>\u826f\u597d<\/td>\n<td>\u826f\u597d<\/td>\n<td>\u65e0<\/td>\n<\/tr>\n<tr>\n<td>MP3<\/td>\n<td>32-320kbps<\/td>\n<td>\u4e2d\u7b49<\/td>\n<td>\u4e2d\u7b49<\/td>\n<td>\u826f\u597d<\/td>\n<td>\u4f18\u79c0<\/td>\n<td>\u6709<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><span class=\"ez-toc-section\" id=\"%E7%BC%96%E7%A0%81%E6%A0%B8%E5%BF%83%E6%A6%82%E5%BF%B5\"><\/span>\u7f16\u7801\u6838\u5fc3\u6982\u5ff5<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"%E5%85%B3%E9%94%AE%E5%8F%82%E6%95%B0\"><\/span>\u5173\u952e\u53c2\u6570<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>\u7801\u7387\uff08Bitrate\uff09<\/strong><br \/>\n&#8211; <strong>\u5b9a\u4e49<\/strong>\uff1a\u6bcf\u79d2\u4f20\u8f93\u7684\u6bd4\u7279\u6570\uff0c\u5355\u4f4dkbps\u6216Mbps<br \/>\n&#8211; <strong>\u8bed\u97f3\u7f16\u7801\u63a8\u8350\u7801\u7387<\/strong>\uff1a<br \/>\n  &#8211; \u6781\u4f4e\u5e26\u5bbd\uff1a8-16kbps\uff08Opus\u7a84\u5e26\uff09<br \/>\n  &#8211; \u8bed\u97f3\u901a\u8bdd\uff1a16-32kbps\uff08Opus\u5bbd\u5e26\uff09<br \/>\n  &#8211; \u9ad8\u8d28\u91cf\u8bed\u97f3\uff1a32-64kbps<br \/>\n&#8211; <strong>\u97f3\u4e50\u7f16\u7801\u63a8\u8350\u7801\u7387<\/strong>\uff1a<br \/>\n  &#8211; \u4f4e\u8d28\u91cf\uff1a64-96kbps\uff08\u79fb\u52a8\u7f51\u7edc\u6d41\u5a92\u4f53\uff09<br \/>\n  &#8211; \u6807\u51c6\u8d28\u91cf\uff1a128kbps\uff08\u5728\u7ebf\u97f3\u4e50\u6807\u51c6\uff09<br \/>\n  &#8211; \u9ad8\u8d28\u91cf\uff1a192-256kbps\uff08\u9ad8\u4fdd\u771f\u97f3\u4e50\uff09<br \/>\n  &#8211; \u6781\u9ad8\u8d28\u91cf\uff1a320kbps\uff08\u63a5\u8fd1\u65e0\u635f\uff09<br \/>\n&#8211; <strong>\u7f16\u7801\u5668\u7801\u7387\u5bf9\u6bd4<\/strong>\uff08\u7acb\u4f53\u58f0\u97f3\u4e50\uff09\uff1a<br \/>\n  &#8211; AAC\uff1a128kbps\u53ef\u8fbe\u63a5\u8fd1CD\u8d28\u91cf<br \/>\n  &#8211; Opus\uff1a128kbps\u8d28\u91cf\u4f18\u4e8eAAC\u540c\u7801\u7387<br \/>\n  &#8211; MP3\uff1a\u9700\u8981192kbps\u624d\u80fd\u8fbe\u5230AAC 128kbps\u8d28\u91cf<br \/>\n  &#8211; G.711\uff1a\u56fa\u5b9a64kbps\uff08\u8bed\u97f3\uff09<\/p>\n<p><strong>\u5e27\u957f\u5ea6\uff08Frame Size\uff09<\/strong><br \/>\n&#8211; <strong>\u5b9a\u4e49<\/strong>\uff1a\u7f16\u7801\u5668\u4e00\u6b21\u5904\u7406\u7684\u97f3\u9891\u6837\u672c\u6570<br \/>\n&#8211; <strong>\u5e38\u89c1\u503c<\/strong>\uff08\u4ee548kHz\u91c7\u6837\u7387\u4e3a\u4f8b\uff09\uff1a<br \/>\n  &#8211; 2.5ms\uff1a120\u6837\u672c\uff08\u8d85\u4f4e\u5ef6\u8fdf\uff09<br \/>\n  &#8211; 5ms\uff1a240\u6837\u672c\uff08\u4f4e\u5ef6\u8fdf\uff09<br \/>\n  &#8211; 10ms\uff1a480\u6837\u672c\uff08\u5b9e\u65f6\u901a\u4fe1\u6807\u51c6\uff09<br \/>\n  &#8211; 20ms\uff1a960\u6837\u672c\uff08\u5e73\u8861\u5ef6\u8fdf\u548c\u6548\u7387\uff09<br \/>\n  &#8211; 40ms\uff1a1920\u6837\u672c\uff08\u9ad8\u6548\u7387\uff0c\u5ef6\u8fdf\u8f83\u9ad8\uff09<br \/>\n  &#8211; 60ms\uff1a2880\u6837\u672c\uff08\u6700\u9ad8\u6548\u7387\uff09<br \/>\n&#8211; <strong>\u5f71\u54cd<\/strong>\uff1a<br \/>\n  &#8211; \u5e27\u957f\u5ea6\u8d8a\u77ed\uff0c\u5ef6\u8fdf\u8d8a\u4f4e\uff0c\u4f46\u538b\u7f29\u6548\u7387\u8d8a\u4f4e<br \/>\n  &#8211; \u5e27\u957f\u5ea6\u8d8a\u957f\uff0c\u538b\u7f29\u6548\u7387\u8d8a\u9ad8\uff0c\u4f46\u5ef6\u8fdf\u8d8a\u9ad8<br \/>\n&#8211; <strong>\u9009\u62e9\u5efa\u8bae<\/strong>\uff1a<br \/>\n  &#8211; \u5b9e\u65f6\u901a\u8bdd\uff1a10-20ms<br \/>\n  &#8211; \u89c6\u9891\u4f1a\u8bae\uff1a20ms<br \/>\n  &#8211; \u97f3\u4e50\u7f16\u7801\uff1a20-40ms<br \/>\n  &#8211; \u8bed\u97f3\u8bc6\u522b\uff1a10-20ms<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E7%BC%96%E7%A0%81%E5%99%A8%E7%89%B9%E5%AE%9A%E5%8F%82%E6%95%B0\"><\/span>\u7f16\u7801\u5668\u7279\u5b9a\u53c2\u6570<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Opus\u7f16\u7801\u5668\u53c2\u6570<\/strong><br \/>\n&#8211; <strong>Application\u6a21\u5f0f<\/strong>\uff1a<br \/>\n  &#8211; <code>voip<\/code>\uff1a\u4f18\u5316\u8bed\u97f3\u901a\u8bdd\uff08\u4f4e\u5ef6\u8fdf\u3001\u964d\u566a\uff09<br \/>\n  &#8211; <code>audio<\/code>\uff1a\u4f18\u5316\u97f3\u4e50\u8d28\u91cf\uff08\u9ad8\u4fdd\u771f\uff09<br \/>\n  &#8211; <code>lowdelay<\/code>\uff1a\u8d85\u4f4e\u5ef6\u8fdf\u6a21\u5f0f\uff08\u5b9e\u65f6\u4ea4\u4e92\uff09<br \/>\n&#8211; <strong>\u590d\u6742\u5ea6\uff08Complexity\uff09<\/strong>\uff1a0-10\uff0c\u9ed8\u8ba410<br \/>\n  &#8211; 0\uff1a\u6700\u5feb\u7f16\u7801\uff0c\u8d28\u91cf\u6700\u4f4e<br \/>\n  &#8211; 10\uff1a\u6700\u6162\u7f16\u7801\uff0c\u8d28\u91cf\u6700\u9ad8<br \/>\n  &#8211; \u63a8\u8350\uff1a\u5b9e\u65f6\u901a\u8bdd5-8\uff0c\u79bb\u7ebf\u7f16\u780110<br \/>\n&#8211; <strong>\u5e26\u5bbd\uff08Bandwidth\uff09<\/strong>\uff1a<br \/>\n  &#8211; narrowband\uff1a4kHz\uff088kHz\u91c7\u6837\uff09<br \/>\n  &#8211; mediumband\uff1a6kHz\uff0812kHz\u91c7\u6837\uff09<br \/>\n  &#8211; wideband\uff1a8kHz\uff0816kHz\u91c7\u6837\uff09<br \/>\n  &#8211; superwideband\uff1a12kHz\uff0824kHz\u91c7\u6837\uff09<br \/>\n  &#8211; fullband\uff1a20kHz\uff0848kHz\u91c7\u6837\uff09<\/p>\n<p><strong>AAC\u7f16\u7801\u5668\u53c2\u6570<\/strong><br \/>\n&#8211; <strong>Profile<\/strong>\uff1a<br \/>\n  &#8211; AAC-LC\uff1a\u4f4e\u590d\u6742\u5ea6\uff0c\u6700\u5e38\u7528<br \/>\n  &#8211; HE-AAC\uff08AAC+\uff09\uff1a\u9ad8\u6548\u7387\uff0c\u4f4e\u7801\u7387\u4f18\u5316<br \/>\n  &#8211; HE-AACv2\uff08eAAC+\uff09\uff1a\u589e\u5f3a\u578b\u9ad8\u6548\u7387\uff0c\u8d85\u4f4e\u7801\u7387<br \/>\n&#8211; <strong>\u91cf\u5316\u8d28\u91cf\uff08VBR\u8d28\u91cf\uff09<\/strong>\uff1a0.1-2.0<br \/>\n  &#8211; 0.1-0.4\uff1a\u4f4e\u8d28\u91cf\uff08\u9002\u5408\u8bed\u97f3\uff09<br \/>\n  &#8211; 0.4-0.6\uff1a\u4e2d\u7b49\u8d28\u91cf\uff08\u9002\u5408\u4e00\u822c\u97f3\u4e50\uff09<br \/>\n  &#8211; 0.6-1.0\uff1a\u9ad8\u8d28\u91cf\uff08\u9002\u5408\u9ad8\u4fdd\u771f\u97f3\u4e50\uff09<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E9%87%87%E6%A0%B7%E7%8E%87%E8%BD%AC%E6%8D%A2\"><\/span>\u91c7\u6837\u7387\u8f6c\u6362<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>\u4e0a\u91c7\u6837\uff08Upsampling\uff09<\/strong><br \/>\n&#8211; \u63d0\u9ad8\u91c7\u6837\u7387\uff0c\u9700\u8981\u63d2\u503c\u586b\u5145\u65b0\u6837\u672c<br \/>\n&#8211; \u4e0d\u4f1a\u6539\u5584\u97f3\u8d28\uff0c\u4f46\u53ef\u80fd\u9700\u8981\u7528\u4e8e\u683c\u5f0f\u8f6c\u6362<br \/>\n&#8211; \u63d2\u503c\u7b97\u6cd5\uff1a\u7ebf\u6027\u63d2\u503c\u3001\u6837\u6761\u63d2\u503c\u3001sinc\u63d2\u503c<\/p>\n<p><strong>\u4e0b\u91c7\u6837\uff08Downsampling\uff09<\/strong><br \/>\n&#8211; \u964d\u4f4e\u91c7\u6837\u7387\uff0c\u9700\u8981\u6297\u6df7\u53e0\u6ee4\u6ce2\uff08Anti-aliasing\uff09<br \/>\n&#8211; \u4f1a\u635f\u5931\u9ad8\u9891\u4fe1\u606f<br \/>\n&#8211; \u9002\u7528\u4e8e\u964d\u4f4e\u5e26\u5bbd\u548c\u6570\u636e\u91cf<\/p>\n<p><strong>\u91cd\u91c7\u6837\u7b97\u6cd5<\/strong><br \/>\n&#8211; <strong>\u7ebf\u6027\u63d2\u503c<\/strong>\uff1a\u901f\u5ea6\u5feb\uff0c\u8d28\u91cf\u4e00\u822c<br \/>\n&#8211; <strong>\u6837\u6761\u63d2\u503c<\/strong>\uff1a\u901f\u5ea6\u4e2d\u7b49\uff0c\u8d28\u91cf\u8f83\u597d<br \/>\n&#8211; <strong>sinc\u63d2\u503c<\/strong>\uff1a\u901f\u5ea6\u6162\uff0c\u8d28\u91cf\u6700\u597d\uff08\u7406\u8bba\u4e0a\u5b8c\u7f8e\u91cd\u5efa\uff09<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E5%A3%B0%E9%81%93%E5%A4%84%E7%90%86\"><\/span>\u58f0\u9053\u5904\u7406<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>\u5355\u58f0\u9053\u7f16\u7801<\/strong><br \/>\n&#8211; \u6570\u636e\u91cf\u6700\u5c0f<br \/>\n&#8211; \u9002\u5408\u8bed\u97f3\u901a\u8bdd\u3001\u64ad\u5ba2\u3001\u6709\u58f0\u4e66<br \/>\n&#8211; \u7801\u7387\u9700\u6c42\u4f4e<\/p>\n<p><strong>\u7acb\u4f53\u58f0\u7f16\u7801<\/strong><br \/>\n&#8211; <strong>\u7b80\u5355\u7acb\u4f53\u58f0<\/strong>\uff1a\u5de6\u53f3\u58f0\u9053\u5206\u522b\u7f16\u7801<br \/>\n&#8211; <strong>\u8054\u5408\u7acb\u4f53\u58f0\uff08Joint Stereo\uff09<\/strong>\uff1a<br \/>\n  &#8211; <strong>Mid-Side\u7f16\u7801<\/strong>\uff1a\u7f16\u7801\u4e2d\u7f6e\uff08M = L+R\uff09\u548c\u4fa7\u8fb9\uff08S = L-R\uff09\u4fe1\u53f7<br \/>\n  &#8211; <strong>\u5f3a\u5ea6\u7acb\u4f53\u58f0<\/strong>\uff1a\u9ad8\u9891\u4f7f\u7528\u5355\u58f0\u9053\uff0c\u4f4e\u9891\u4f7f\u7528\u7acb\u4f53\u58f0<br \/>\n  &#8211; \u4f18\u52bf\uff1a\u76f8\u540c\u7801\u7387\u4e0b\u8d28\u91cf\u66f4\u597d\uff0c\u6216\u76f8\u540c\u8d28\u91cf\u4e0b\u7801\u7387\u66f4\u4f4e<\/p>\n<p><strong>\u591a\u58f0\u9053\u7f16\u7801<\/strong><br \/>\n&#8211; 5.1\u30017.1\u73af\u7ed5\u58f0\u7f16\u7801<br \/>\n&#8211; \u4f7f\u7528\u58f0\u9053\u8026\u5408\uff08Channel Coupling\uff09\u6280\u672f<br \/>\n&#8211; \u7801\u7387\u9700\u6c42\uff1a\u7ea6\u4e3a\u7acb\u4f53\u58f0\u76842-3\u500d<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E7%BC%96%E7%A0%81%E5%BB%B6%E8%BF%9F\"><\/span>\u7f16\u7801\u5ef6\u8fdf<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>\u7f16\u7801\u5668\u5ef6\u8fdf\u6765\u6e90<\/strong><br \/>\n&#8211; <strong>\u7b97\u6cd5\u5ef6\u8fdf<\/strong>\uff1a\u7f16\u7801\u5668\u9700\u8981\u7f13\u51b2\u4e00\u5b9a\u6570\u636e\u624d\u80fd\u5f00\u59cb\u7f16\u7801<br \/>\n&#8211; <strong>\u5e27\u7f13\u51b2\u5ef6\u8fdf<\/strong>\uff1a\u7f16\u7801\u5668\u6309\u5e27\u5904\u7406\uff0c\u9700\u8981\u7b49\u5f85\u5b8c\u6574\u5e27<br \/>\n&#8211; <strong>\u9884\u5904\u7406\u5ef6\u8fdf<\/strong>\uff1a\u6ee4\u6ce2\u3001\u53d8\u6362\u7b49\u9884\u5904\u7406\u64cd\u4f5c<\/p>\n<p><strong>\u4f4e\u5ef6\u8fdf\u7f16\u7801\u5668<\/strong><br \/>\n&#8211; \u51cf\u5c11\u7f13\u51b2\uff0c\u4f46\u53ef\u80fd\u5f71\u54cd\u8d28\u91cf\u548c\u538b\u7f29\u6548\u7387<br \/>\n&#8211; \u5b9e\u65f6\u901a\u4fe1\u9700\u8981\u4f4e\u5ef6\u8fdf\uff08\u7aef\u5230\u7aef&lt;100ms\uff09<br \/>\n&#8211; Opus\u4f4e\u5ef6\u8fdf\u6a21\u5f0f\uff1a2.5-20ms\u7b97\u6cd5\u5ef6\u8fdf<\/p>\n<p><strong>\u5ef6\u8fdf\u8ba1\u7b97<\/strong><br \/>\n&#8211; \u603b\u5ef6\u8fdf = \u7f16\u7801\u5ef6\u8fdf + \u7f51\u7edc\u4f20\u8f93\u5ef6\u8fdf + \u89e3\u7801\u5ef6\u8fdf + \u7f13\u51b2\u5ef6\u8fdf<br \/>\n&#8211; \u5b9e\u65f6\u901a\u4fe1\u76ee\u6807\uff1a\u603b\u5ef6\u8fdf&amp;lt150ms\uff08\u53ef\u63a5\u53d7\uff09\u3001&amp;lt100ms\uff08\u7406\u60f3\uff09<\/p>\n<hr \/>\n<h2><span class=\"ez-toc-section\" id=\"%E7%BC%96%E7%A0%81%E5%99%A8%E5%AE%9E%E7%8E%B0%E8%AF%A6%E8%A7%A3\"><\/span>\u7f16\u7801\u5668\u5b9e\u73b0\u8be6\u89e3<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Opus%E7%BC%96%E7%A0%81%E5%99%A8\"><\/span>Opus\u7f16\u7801\u5668<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Opus\u662f\u73b0\u4ee3\u5316\u7684\u5f00\u653e\u97f3\u9891\u7f16\u7801\u6807\u51c6\uff0c\u7ed3\u5408\u4e86SILK\uff08\u8bed\u97f3\u7f16\u7801\uff09\u548cCELT\uff08\u97f3\u9891\u7f16\u7801\uff09\u6280\u672f\uff0c\u63d0\u4f9b\u4ece\u4f4e\u7801\u7387\u8bed\u97f3\u5230\u9ad8\u8d28\u91cf\u97f3\u4e50\u7684\u5168\u573a\u666f\u652f\u6301\u3002<\/p>\n<h4><span class=\"ez-toc-section\" id=\"%E8%BD%AF%E4%BB%B6%E7%BC%96%E7%A0%81%E5%99%A8\"><\/span>\u8f6f\u4ef6\u7f16\u7801\u5668<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><strong>1. libopus\uff08\u5b98\u65b9\u53c2\u8003\u5b9e\u73b0\uff09<\/strong><br \/>\n&#8211; <strong>\u7c7b\u578b<\/strong>\uff1a\u5f00\u6e90\u8f6f\u4ef6\u7f16\u7801\u5668<br \/>\n&#8211; <strong>\u5f00\u53d1\u8005<\/strong>\uff1aXiph.Org Foundation\u3001Mozilla\u3001Skype<br \/>\n&#8211; <strong>\u7279\u70b9<\/strong>\uff1a<br \/>\n  &#8211; Opus\u7f16\u7801\u5668\u7684\u6807\u51c6\u53c2\u8003\u5b9e\u73b0<br \/>\n  &#8211; \u652f\u6301\u6240\u6709Opus\u7279\u6027\u548c\u6a21\u5f0f<br \/>\n  &#8211; \u7f16\u7801\u8d28\u91cf\u4f18\u79c0\uff0c\u538b\u7f29\u6548\u7387\u9ad8<br \/>\n  &#8211; \u8de8\u5e73\u53f0\u652f\u6301\uff08Windows\u3001macOS\u3001Linux\u3001iOS\u3001Android\uff09<br \/>\n  &#8211; \u4f4e\u5ef6\u8fdf\u6a21\u5f0f\u652f\u6301\uff082.5ms\u7b97\u6cd5\u5ef6\u8fdf\uff09<br \/>\n  &#8211; \u7801\u7387\u8303\u56f4\uff1a6kbps-510kbps<br \/>\n  &#8211; \u91c7\u6837\u7387\u652f\u6301\uff1a8kHz\u300112kHz\u300116kHz\u300124kHz\u300148kHz<br \/>\n&#8211; <strong>\u4f18\u52bf<\/strong>\uff1a<br \/>\n  &#8211; \u5f00\u6e90\u514d\u8d39\uff0c\u65e0\u4e13\u5229\u8d39\u7528<br \/>\n  &#8211; \u8d28\u91cf\u4f18\u4e8e\u540c\u7801\u7387\u7684AAC\u548cMP3<br \/>\n  &#8211; \u4f4e\u5ef6\u8fdf\u7279\u6027\u4f18\u79c0\uff0c\u9002\u5408\u5b9e\u65f6\u901a\u4fe1<br \/>\n  &#8211; WebRTC\u539f\u751f\u652f\u6301<br \/>\n  &#8211; \u81ea\u9002\u5e94\u7801\u7387\u548c\u5e26\u5bbd<br \/>\n&#8211; <strong>\u52a3\u52bf<\/strong>\uff1a<br \/>\n  &#8211; CPU\u5360\u7528\u76f8\u5bf9\u8f83\u9ad8\uff08\u7279\u522b\u662f\u9ad8\u590d\u6742\u5ea6\u6a21\u5f0f\uff09<br \/>\n  &#8211; \u90e8\u5206\u65e7\u8bbe\u5907\u548c\u5e73\u53f0\u517c\u5bb9\u6027\u6709\u9650<br \/>\n&#8211; <strong>\u9002\u7528\u573a\u666f<\/strong>\uff1a<br \/>\n  &#8211; WebRTC\u97f3\u89c6\u9891\u901a\u8bdd\uff08\u6700\u4f73\u9009\u62e9\uff09<br \/>\n  &#8211; VoIP\u8bed\u97f3\u901a\u8bdd<br \/>\n  &#8211; \u5b9e\u65f6\u97f3\u4e50\u6d41\u5a92\u4f53<br \/>\n  &#8211; \u5728\u7ebf\u6559\u80b2\u3001\u8fdc\u7a0b\u4f1a\u8bae<br \/>\n  &#8211; \u6e38\u620f\u8bed\u97f3<\/p>\n<p><strong>2. opus-tools<\/strong><br \/>\n&#8211; <strong>\u7c7b\u578b<\/strong>\uff1a\u5b98\u65b9\u547d\u4ee4\u884c\u5de5\u5177\u96c6<br \/>\n&#8211; <strong>\u5305\u542b\u5de5\u5177<\/strong>\uff1a<br \/>\n  &#8211; <code>opusenc<\/code>\uff1aOpus\u7f16\u7801\u5668<br \/>\n  &#8211; <code>opusdec<\/code>\uff1aOpus\u89e3\u7801\u5668<br \/>\n  &#8211; <code>opusinfo<\/code>\uff1aOpus\u6587\u4ef6\u4fe1\u606f\u67e5\u770b<br \/>\n&#8211; <strong>\u7279\u70b9<\/strong>\uff1a\u7b80\u5355\u6613\u7528\uff0c\u9002\u5408\u6279\u91cf\u8f6c\u7801<\/p>\n<p><strong>\u7f16\u7801\u53c2\u6570\u63a8\u8350<\/strong>\uff1a<\/p>\n<table>\n<thead>\n<tr>\n<th>\u573a\u666f<\/th>\n<th>Application<\/th>\n<th>\u7801\u7387<\/th>\n<th>\u91c7\u6837\u7387<\/th>\n<th>\u5e27\u957f\u5ea6<\/th>\n<th>\u590d\u6742\u5ea6<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u8bed\u97f3\u901a\u8bdd<\/td>\n<td>voip<\/td>\n<td>16-32kbps<\/td>\n<td>16kHz<\/td>\n<td>20ms<\/td>\n<td>5-8<\/td>\n<\/tr>\n<tr>\n<td>\u89c6\u9891\u4f1a\u8bae<\/td>\n<td>voip<\/td>\n<td>32-64kbps<\/td>\n<td>24kHz<\/td>\n<td>20ms<\/td>\n<td>8<\/td>\n<\/tr>\n<tr>\n<td>\u97f3\u4e50\u6d41\u5a92\u4f53<\/td>\n<td>audio<\/td>\n<td>96-128kbps<\/td>\n<td>48kHz<\/td>\n<td>20ms<\/td>\n<td>10<\/td>\n<\/tr>\n<tr>\n<td>\u8d85\u4f4e\u5ef6\u8fdf<\/td>\n<td>lowdelay<\/td>\n<td>32-64kbps<\/td>\n<td>16-24kHz<\/td>\n<td>10ms<\/td>\n<td>5<\/td>\n<\/tr>\n<tr>\n<td>\u6e38\u620f\u8bed\u97f3<\/td>\n<td>voip<\/td>\n<td>24-48kbps<\/td>\n<td>16kHz<\/td>\n<td>20ms<\/td>\n<td>5-8<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4><span class=\"ez-toc-section\" id=\"%E7%A1%AC%E4%BB%B6%E7%BC%96%E7%A0%81%E5%99%A8%E6%94%AF%E6%8C%81%E6%83%85%E5%86%B5\"><\/span>\u786c\u4ef6\u7f16\u7801\u5668\u652f\u6301\u60c5\u51b5<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>pus\u662f\u76f8\u5bf9\u8f83\u65b0\u7684\u7f16\u7801\u6807\u51c6\uff082012\u5e74\u6807\u51c6\u5316\uff09\uff0c\u786c\u4ef6\u82af\u7247\u652f\u6301\u975e\u5e38\u6709\u9650\uff0c\u7edd\u5927\u591a\u6570\u5e73\u53f0\u548c\u8bbe\u5907<strong>\u4e0d\u63d0\u4f9bOpus\u786c\u4ef6\u7f16\u89e3\u7801<\/strong><\/p>\n<hr \/>\n<h3><span class=\"ez-toc-section\" id=\"AAC%E7%BC%96%E7%A0%81%E5%99%A8\"><\/span>AAC\u7f16\u7801\u5668<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>AAC\uff08Advanced Audio Coding\uff09\u662f\u5e7f\u6cdb\u4f7f\u7528\u7684\u97f3\u9891\u7f16\u7801\u6807\u51c6\uff0c\u517c\u5bb9\u6027\u597d\uff0c\u8d28\u91cf\u4f18\u79c0\u3002<\/p>\n<h4><span class=\"ez-toc-section\" id=\"%E8%BD%AF%E4%BB%B6%E7%BC%96%E7%A0%81%E5%99%A8-2\"><\/span>\u8f6f\u4ef6\u7f16\u7801\u5668<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><strong>1. fdk-aac\uff08Fraunhofer AAC\u7f16\u7801\u5668\uff09<\/strong><br \/>\n&#8211; <strong>\u7c7b\u578b<\/strong>\uff1a\u5f00\u6e90\u8f6f\u4ef6\u7f16\u7801\u5668\uff08\u57fa\u4e8eFraunhofer\u5546\u4e1a\u7f16\u7801\u5668\uff09<br \/>\n&#8211; <strong>\u5f00\u53d1\u8005<\/strong>\uff1aFraunhofer IIS<br \/>\n&#8211; <strong>\u7279\u70b9<\/strong>\uff1a<br \/>\n  &#8211; AAC\u7f16\u7801\u5668\u7684\u9ec4\u91d1\u6807\u51c6\uff0c\u8d28\u91cf\u6700\u597d<br \/>\n  &#8211; \u652f\u6301\u6240\u6709AAC Profile\uff08LC\u3001HE\u3001HEv2\uff09<br \/>\n  &#8211; \u7f16\u7801\u8d28\u91cf\u4f18\u4e8e\u5176\u4ed6AAC\u8f6f\u4ef6\u7f16\u7801\u5668<br \/>\n  &#8211; \u8de8\u5e73\u53f0\u652f\u6301<br \/>\n&#8211; <strong>\u4f18\u52bf<\/strong>\uff1a<br \/>\n  &#8211; \u8d28\u91cf\u6700\u4f18\uff0c\u538b\u7f29\u6548\u7387\u9ad8<br \/>\n  &#8211; \u4f4e\u7801\u7387\u4e0b\u8d28\u91cf\u4f18\u79c0\uff08HE-AAC\uff09<br \/>\n  &#8211; \u5e7f\u6cdb\u517c\u5bb9\u6027<br \/>\n&#8211; <strong>\u52a3\u52bf<\/strong>\uff1a<br \/>\n  &#8211; \u7f16\u7801\u901f\u5ea6\u76f8\u5bf9\u8f83\u6162<br \/>\n  &#8211; \u67d0\u4e9b\u4e13\u5229\u9650\u5236\uff08\u5177\u4f53\u53d6\u51b3\u4e8e\u5730\u533a\uff09<br \/>\n&#8211; <strong>\u9002\u7528\u573a\u666f<\/strong>\uff1a<br \/>\n  &#8211; \u9ad8\u8d28\u91cf\u97f3\u4e50\u7f16\u7801<br \/>\n  &#8211; \u6d41\u5a92\u4f53\u670d\u52a1\uff08Spotify\u3001Apple Music\u7b49\uff09<br \/>\n  &#8211; \u89c6\u9891\u97f3\u8f68<br \/>\n  &#8211; \u5e7f\u64ad<\/p>\n<p><strong>2. libavcodec AAC\u7f16\u7801\u5668<\/strong><br \/>\n&#8211; <strong>\u7c7b\u578b<\/strong>\uff1aFFmpeg\/libavcodec\u5185\u7f6e<br \/>\n&#8211; <strong>\u7279\u70b9<\/strong>\uff1a\u8d28\u91cf\u4e00\u822c\uff0c\u901f\u5ea6\u5feb\uff0c\u65e0\u4e13\u5229\u8d39\u7528<br \/>\n&#8211; <strong>\u9002\u7528\u573a\u666f<\/strong>\uff1a\u5feb\u901f\u8f6c\u7801\u3001\u4e0d\u8981\u6c42\u6781\u9ad8\u8d28\u91cf\u7684\u573a\u666f<\/p>\n<h4><span class=\"ez-toc-section\" id=\"%E7%A1%AC%E4%BB%B6%E7%BC%96%E7%A0%81%E5%99%A8%E6%94%AF%E6%8C%81%E6%83%85%E5%86%B5-2\"><\/span>\u786c\u4ef6\u7f16\u7801\u5668\u652f\u6301\u60c5\u51b5<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><strong>\u5404\u5e73\u53f0AAC\u786c\u7f16\u786c\u89e3\u652f\u6301<\/strong><\/p>\n<table>\n<thead>\n<tr>\n<th>\u5e73\u53f0\/API<\/th>\n<th>AAC\u786c\u7f16\u652f\u6301<\/th>\n<th>AAC\u786c\u89e3\u652f\u6301<\/th>\n<th>Profile\u652f\u6301<\/th>\n<th>\u5f00\u53d1\u8005API<\/th>\n<th>FFmpeg\u7f16\u7801\u5668<\/th>\n<th>\u5907\u6ce8<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>iOS (AudioToolbox)<\/strong><\/td>\n<td>\u2705 \u652f\u6301<\/td>\n<td>\u2705 \u652f\u6301<\/td>\n<td>AAC-LC\u3001HE-AAC\u3001HE-AACv2<\/td>\n<td>\u2705 \u5f00\u653e&amp;ltbr \/&gt;AudioToolbox\u6846\u67b6&amp;ltbr \/&gt;(iOS 4.0+)<\/td>\n<td><code>aac_at<\/code><\/td>\n<td>Apple\u5b98\u65b9API&amp;ltbr \/&gt;\u4f4eCPU\u5360\u7528\uff0c\u9ad8\u8d28\u91cf\u7f16\u7801&amp;ltbr \/&gt;Swift\/Objective-C\/C\u53ef\u7528<\/td>\n<\/tr>\n<tr>\n<td><strong>macOS (AudioToolbox)<\/strong><\/td>\n<td>\u2705 \u652f\u6301<\/td>\n<td>\u2705 \u652f\u6301<\/td>\n<td>AAC-LC\u3001HE-AAC\u3001HE-AACv2<\/td>\n<td>\u2705 \u5f00\u653e&amp;ltbr \/&gt;AudioToolbox\u6846\u67b6&amp;ltbr \/&gt;(macOS 10.6+)<\/td>\n<td><code>aac_at<\/code><\/td>\n<td>Apple\u5b98\u65b9API&amp;ltbr \/&gt;C\/C++\/Swift\/Objective-C\u53ef\u7528<\/td>\n<\/tr>\n<tr>\n<td><strong>Android (MediaCodec)<\/strong><\/td>\n<td>\u2705 \u652f\u6301<\/td>\n<td>\u2705 \u652f\u6301<\/td>\n<td>AAC-LC\u3001HE-AAC&amp;ltbr \/&gt;\uff08\u5177\u4f53\u652f\u6301\u56e0\u8bbe\u5907\u800c\u5f02\uff09<\/td>\n<td>\u2705 \u5f00\u653e&amp;ltbr \/&gt;MediaCodec API&amp;ltbr \/&gt;(Android 4.1+, API 16+)<\/td>\n<td><code>aac_mediacodec<\/code><\/td>\n<td>Google\u5b98\u65b9API\uff0cJava\/Kotlin\u53ef\u7528&amp;ltbr \/&gt;\u9700\u8fd0\u884c\u65f6\u68c0\u6d4b\u786c\u4ef6\u80fd\u529b&amp;ltbr \/&gt;\u4e0d\u540c\u8bbe\u5907\u652f\u6301\u60c5\u51b5\u5dee\u5f02\u8f83\u5927<\/td>\n<\/tr>\n<tr>\n<td><strong>Windows (Media Foundation)<\/strong><\/td>\n<td>\u2705 \u652f\u6301<\/td>\n<td>\u2705 \u652f\u6301<\/td>\n<td>AAC-LC\u3001HE-AAC<\/td>\n<td>\u2705 \u5f00\u653e&amp;ltbr \/&gt;Media Foundation API&amp;ltbr \/&gt;(Windows 7+)<\/td>\n<td><code>aac_mf<\/code><\/td>\n<td>Microsoft\u5b98\u65b9API\uff0cC++\/C#\u53ef\u7528&amp;ltbr \/&gt;\u9700\u8981\u652f\u6301AAC\u7684\u97f3\u9891\u786c\u4ef6\/\u9a71\u52a8<\/td>\n<\/tr>\n<tr>\n<td><strong>Linux (ALSA\/PulseAudio)<\/strong><\/td>\n<td>\u26a0\ufe0f \u90e8\u5206\u652f\u6301<\/td>\n<td>\u26a0\ufe0f \u90e8\u5206\u652f\u6301<\/td>\n<td>\u53d6\u51b3\u4e8e\u786c\u4ef6<\/td>\n<td>\u26a0\ufe0f \u90e8\u5206\u5f00\u653e&amp;ltbr \/&gt;\u53d6\u51b3\u4e8e\u786c\u4ef6\u548c\u9a71\u52a8<\/td>\n<td>&#8211;<\/td>\n<td>\u652f\u6301\u60c5\u51b5\u56e0\u786c\u4ef6\u548c\u9a71\u52a8\u800c\u5f02&amp;ltbr \/&gt;\u901a\u5e38\u4f7f\u7528\u8f6f\u4ef6\u7f16\u7801<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4><span class=\"ez-toc-section\" id=\"AAC%E7%BC%96%E7%A0%81%E5%99%A8%E9%80%89%E6%8B%A9%E5%BB%BA%E8%AE%AE\"><\/span>AAC\u7f16\u7801\u5668\u9009\u62e9\u5efa\u8bae<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><strong>iOS\/macOS\u5e94\u7528<\/strong>\uff1a<br \/>\n&#8211; <strong>\u63a8\u8350<\/strong>\uff1a\u4f7f\u7528AudioToolbox\u786c\u4ef6\u7f16\u7801<br \/>\n&#8211; \u8d28\u91cf\u597d\uff0cCPU\u5360\u7528\u4f4e\uff0c\u529f\u8017\u4f4e<br \/>\n&#8211; \u539f\u751f\u652f\u6301\uff0c\u65e0\u9700\u7b2c\u4e09\u65b9\u5e93<br \/>\n&#8211; \u9002\u5408\u79fb\u52a8\u8bbe\u5907\u548c\u5b9e\u65f6\u573a\u666f<\/p>\n<p><strong>Android\u5e94\u7528<\/strong>\uff1a<br \/>\n&#8211; <strong>\u63a8\u8350<\/strong>\uff1a\u4f7f\u7528MediaCodec\u786c\u4ef6\u7f16\u7801\uff08\u9700\u68c0\u6d4b\u786c\u4ef6\u652f\u6301\uff09<br \/>\n&#8211; \u5907\u9009\uff1a\u4f7f\u7528fdk-aac\u8f6f\u4ef6\u7f16\u7801\uff08\u901a\u8fc7NDK\uff09<br \/>\n&#8211; \u6ce8\u610f\u8bbe\u5907\u517c\u5bb9\u6027\u6d4b\u8bd5<\/p>\n<p><strong>\u9ad8\u8d28\u91cf\u97f3\u4e50\u7f16\u7801<\/strong>\uff1a<br \/>\n&#8211; <strong>\u63a8\u8350<\/strong>\uff1a\u4f7f\u7528fdk-aac\u8f6f\u4ef6\u7f16\u7801<br \/>\n&#8211; \u7801\u7387\uff1a192-256kbps\uff08AAC-LC\uff09<br \/>\n&#8211; \u8d28\u91cf\u6700\u4f18<\/p>\n<p><strong>\u6d41\u5a92\u4f53\/\u76f4\u64ad<\/strong>\uff1a<br \/>\n&#8211; <strong>\u79fb\u52a8\u7aef<\/strong>\uff1a\u4f7f\u7528\u786c\u4ef6\u7f16\u7801\uff08iOS AudioToolbox\u3001Android MediaCodec\uff09<br \/>\n&#8211; <strong>\u684c\u9762\u7aef<\/strong>\uff1a\u4f7f\u7528fdk-aac\u6216\u786c\u4ef6\u7f16\u7801<br \/>\n&#8211; \u7801\u7387\uff1a128kbps\uff08\u6807\u51c6\uff09\u3001192kbps\uff08\u9ad8\u8d28\u91cf\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u97f3\u9891\u7f16\u7801 \u7f16\u7801\u6807\u51c6\u6982\u8ff0 AAC\uff08Advanced Audio Coding\uff09 &#8211; \u7f16\u7801\u539f\u7406\uff1a\u57fa\u4e8eM [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[30],"tags":[],"blocksy_meta":[],"featured_image_urls":{"full":"","thumbnail":"","medium":"","medium_large":"","large":"","1536x1536":"","2048x2048":""},"post_excerpt_stackable":"<p>\u76ee\u5f55 Toggle \u97f3\u9891\u7f16\u7801\u7f16\u7801\u6807\u51c6\u6982\u8ff0\u7f16\u7801\u6838\u5fc3\u6982\u5ff5\u5173\u952e\u53c2\u6570\u7f16\u7801\u5668\u7279\u5b9a\u53c2\u6570\u91c7\u6837\u7387\u8f6c\u6362\u58f0\u9053\u5904\u7406\u7f16\u7801\u5ef6\u8fdf\u7f16\u7801\u5668\u5b9e\u73b0\u8be6\u89e3Opus\u7f16\u7801\u5668\u8f6f\u4ef6\u7f16\u7801\u5668\u786c\u4ef6\u7f16\u7801\u5668\u652f\u6301\u60c5\u51b5AAC\u7f16\u7801\u5668\u8f6f\u4ef6\u7f16\u7801\u5668\u786c\u4ef6\u7f16\u7801\u5668\u652f\u6301\u60c5\u51b5AA&hellip;<\/p>\n","category_list":"<a href=\"https:\/\/ixriver.com\/?cat=30\" rel=\"category\">\u97f3\u9891<\/a>","author_info":{"name":"admin","url":"https:\/\/ixriver.com\/?author=1"},"comments_num":"0 comments","_links":{"self":[{"href":"https:\/\/ixriver.com\/index.php?rest_route=\/wp\/v2\/posts\/780"}],"collection":[{"href":"https:\/\/ixriver.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ixriver.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ixriver.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ixriver.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=780"}],"version-history":[{"count":0,"href":"https:\/\/ixriver.com\/index.php?rest_route=\/wp\/v2\/posts\/780\/revisions"}],"wp:attachment":[{"href":"https:\/\/ixriver.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=780"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ixriver.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=780"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ixriver.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=780"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}