{"id":777,"date":"2026-01-25T09:50:21","date_gmt":"2026-01-25T01:50:21","guid":{"rendered":"https:\/\/ixriver.com\/?p=777"},"modified":"2026-01-25T09:50:21","modified_gmt":"2026-01-25T01:50:21","slug":"%e9%9f%b3%e9%a2%91%e5%a4%84%e7%90%86%e6%a6%82%e8%bf%b0","status":"publish","type":"post","link":"https:\/\/www.v.ixriver.com\/?p=777","title":{"rendered":"\u97f3\u9891\u5904\u7406\u6982\u8ff0"},"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:\/\/www.v.ixriver.com\/?p=777\/#Audio_Processing_Overview\" title=\"Audio Processing Overview\">Audio Processing Overview<\/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:\/\/www.v.ixriver.com\/?p=777\/#%E6%A6%82%E8%BF%B0\" title=\"\u6982\u8ff0\">\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:\/\/www.v.ixriver.com\/?p=777\/#%E9%9F%B3%E9%A2%91%E5%A4%84%E7%90%86%E7%AE%A1%E9%81%93\" title=\"\u97f3\u9891\u5904\u7406\u7ba1\u9053\">\u97f3\u9891\u5904\u7406\u7ba1\u9053<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.v.ixriver.com\/?p=777\/#%E6%96%87%E6%A1%A3%E7%9B%AE%E5%BD%95\" title=\"\u6587\u6863\u76ee\u5f55\">\u6587\u6863\u76ee\u5f55<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.v.ixriver.com\/?p=777\/#1_%E9%9F%B3%E9%A2%91%E9%87%87%E9%9B%86_%E2%9C%85\" title=\"1. \u97f3\u9891\u91c7\u96c6 \u2705\">1. \u97f3\u9891\u91c7\u96c6 \u2705<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.v.ixriver.com\/?p=777\/#2_%E9%9F%B3%E9%A2%91%E5%89%8D%E5%A4%84%E7%90%86_%E2%9A%A0%EF%B8%8F\" title=\"2. \u97f3\u9891\u524d\u5904\u7406 \u26a0\ufe0f\">2. \u97f3\u9891\u524d\u5904\u7406 \u26a0\ufe0f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.v.ixriver.com\/?p=777\/#3_%E9%9F%B3%E9%A2%91%E7%BC%96%E7%A0%81_%E2%9C%85\" title=\"3. \u97f3\u9891\u7f16\u7801 \u2705\">3. \u97f3\u9891\u7f16\u7801 \u2705<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.v.ixriver.com\/?p=777\/#4_%E9%9F%B3%E9%A2%91%E4%BC%A0%E8%BE%93_%E2%9C%85\" title=\"4. \u97f3\u9891\u4f20\u8f93 \u2705\">4. \u97f3\u9891\u4f20\u8f93 \u2705<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.v.ixriver.com\/?p=777\/#5_%E9%9F%B3%E9%A2%91%E8%A7%A3%E7%A0%81_%E2%9C%85\" title=\"5. \u97f3\u9891\u89e3\u7801 \u2705\">5. \u97f3\u9891\u89e3\u7801 \u2705<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.v.ixriver.com\/?p=777\/#6_%E9%9F%B3%E9%A2%91%E6%B8%B2%E6%9F%93%E6%92%AD%E6%94%BE_%E2%9C%85\" title=\"6. \u97f3\u9891\u6e32\u67d3\u64ad\u653e \u2705\">6. \u97f3\u9891\u6e32\u67d3\u64ad\u653e \u2705<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.v.ixriver.com\/?p=777\/#%E6%96%87%E6%A1%A3%E7%8A%B6%E6%80%81%E8%AF%B4%E6%98%8E\" title=\"\u6587\u6863\u72b6\u6001\u8bf4\u660e\">\u6587\u6863\u72b6\u6001\u8bf4\u660e<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.v.ixriver.com\/?p=777\/#%E5%BF%AB%E9%80%9F%E5%AF%BC%E8%88%AA\" title=\"\u5feb\u901f\u5bfc\u822a\">\u5feb\u901f\u5bfc\u822a<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.v.ixriver.com\/?p=777\/#%E6%8C%89%E4%BD%BF%E7%94%A8%E5%9C%BA%E6%99%AF%E6%9F%A5%E6%89%BE\" title=\"\u6309\u4f7f\u7528\u573a\u666f\u67e5\u627e\">\u6309\u4f7f\u7528\u573a\u666f\u67e5\u627e<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.v.ixriver.com\/?p=777\/#%E6%8C%89%E6%8A%80%E6%9C%AF%E9%A2%86%E5%9F%9F%E6%9F%A5%E6%89%BE\" title=\"\u6309\u6280\u672f\u9886\u57df\u67e5\u627e\">\u6309\u6280\u672f\u9886\u57df\u67e5\u627e<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.v.ixriver.com\/?p=777\/#%E6%8C%89%E7%BC%96%E7%A0%81%E6%A0%BC%E5%BC%8F%E6%9F%A5%E6%89%BE\" title=\"\u6309\u7f16\u7801\u683c\u5f0f\u67e5\u627e\">\u6309\u7f16\u7801\u683c\u5f0f\u67e5\u627e<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.v.ixriver.com\/?p=777\/#%E9%9F%B3%E9%A2%91%E5%8F%82%E6%95%B0%E9%80%9F%E6%9F%A5%E8%A1%A8\" title=\"\u97f3\u9891\u53c2\u6570\u901f\u67e5\u8868\">\u97f3\u9891\u53c2\u6570\u901f\u67e5\u8868<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.v.ixriver.com\/?p=777\/#%E9%87%87%E6%A0%B7%E7%8E%87%E5%AF%B9%E7%85%A7%E8%A1%A8\" title=\"\u91c7\u6837\u7387\u5bf9\u7167\u8868\">\u91c7\u6837\u7387\u5bf9\u7167\u8868<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.v.ixriver.com\/?p=777\/#%E7%A0%81%E7%8E%87%E6%8E%A8%E8%8D%90%E8%A1%A8\" title=\"\u7801\u7387\u63a8\u8350\u8868\">\u7801\u7387\u63a8\u8350\u8868<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/www.v.ixriver.com\/?p=777\/#%E5%BB%B6%E8%BF%9F%E5%AF%B9%E7%85%A7%E8%A1%A8\" title=\"\u5ef6\u8fdf\u5bf9\u7167\u8868\">\u5ef6\u8fdf\u5bf9\u7167\u8868<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/www.v.ixriver.com\/?p=777\/#%E7%9B%B8%E5%85%B3%E8%B5%84%E6%BA%90\" title=\"\u76f8\u5173\u8d44\u6e90\">\u76f8\u5173\u8d44\u6e90<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/www.v.ixriver.com\/?p=777\/#%E4%B8%8A%E7%BA%A7%E7%9B%AE%E5%BD%95\" title=\"\u4e0a\u7ea7\u76ee\u5f55\">\u4e0a\u7ea7\u76ee\u5f55<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/www.v.ixriver.com\/?p=777\/#%E5%A4%96%E9%83%A8%E5%8F%82%E8%80%83\" title=\"\u5916\u90e8\u53c2\u8003\">\u5916\u90e8\u53c2\u8003<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/www.v.ixriver.com\/?p=777\/#%E7%9B%B8%E5%85%B3%E5%B7%A5%E5%85%B7\" title=\"\u76f8\u5173\u5de5\u5177\">\u76f8\u5173\u5de5\u5177<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/www.v.ixriver.com\/?p=777\/#%E6%96%87%E6%A1%A3%E7%BB%B4%E6%8A%A4\" title=\"\u6587\u6863\u7ef4\u62a4\">\u6587\u6863\u7ef4\u62a4<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h1><span class=\"ez-toc-section\" id=\"Audio_Processing_Overview\"><\/span>Audio Processing Overview<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<h2><span class=\"ez-toc-section\" id=\"%E6%A6%82%E8%BF%B0\"><\/span>\u6982\u8ff0<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u672c\u76ee\u5f55\u5305\u542b\u97f3\u9891\u5904\u7406\u5b8c\u6574\u6d41\u7a0b\u7684\u6280\u672f\u6587\u6863\uff0c\u6db5\u76d6\u4ece\u97f3\u9891\u91c7\u96c6\u5230\u6700\u7ec8\u6e32\u67d3\u64ad\u653e\u7684\u5404\u4e2a\u73af\u8282\u3002\u6587\u6863\u6309\u7167\u97f3\u9891\u5904\u7406\u7ba1\u9053\uff08Audio Pipeline\uff09\u7684\u903b\u8f91\u987a\u5e8f\u7ec4\u7ec7\u3002<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E9%9F%B3%E9%A2%91%E5%A4%84%E7%90%86%E7%AE%A1%E9%81%93\"><\/span>\u97f3\u9891\u5904\u7406\u7ba1\u9053<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u97f3\u9891\u5904\u7406\u7684\u5b8c\u6574\u6d41\u7a0b\u5982\u4e0b\uff1a<\/p>\n<pre><code>\u91c7\u96c6 \u2192 \u524d\u5904\u7406 \u2192 \u7f16\u7801 \u2192 \u4f20\u8f93 \u2192 \u89e3\u7801 \u2192 \u6e32\u67d3 \u2192 \u5176\u4ed6\n<\/code><\/pre>\n<h2><span class=\"ez-toc-section\" id=\"%E6%96%87%E6%A1%A3%E7%9B%AE%E5%BD%95\"><\/span>\u6587\u6863\u76ee\u5f55<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"1_%E9%9F%B3%E9%A2%91%E9%87%87%E9%9B%86_%E2%9C%85\"><\/span>1. <a href=\".\/capture.md\">\u97f3\u9891\u91c7\u96c6<\/a> \u2705<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Audio Capture<\/strong><\/p>\n<p>\u97f3\u9891\u5904\u7406\u7684\u7b2c\u4e00\u6b65\uff0c\u8d1f\u8d23\u4ece\u9ea6\u514b\u98ce\u7b49\u8bbe\u5907\u83b7\u53d6\u539f\u59cb\u97f3\u9891\u6570\u636e\u3002<\/p>\n<p><strong>\u4e3b\u8981\u5185\u5bb9\uff1a<\/strong><br \/>\n&#8211; \u91c7\u96c6\u8bbe\u5907\uff08\u9ea6\u514b\u98ce\u3001\u7ebf\u8def\u8f93\u5165\u3001\u865a\u62df\u97f3\u9891\u8bbe\u5907\uff09<br \/>\n&#8211; \u97f3\u9891\u63a5\u53e3\u6807\u51c6<br \/>\n  &#8211; Linux: ALSA\u3001PulseAudio<br \/>\n  &#8211; macOS\/iOS: CoreAudio\u3001AVFoundation<br \/>\n  &#8211; Windows: DirectSound\u3001WASAPI<br \/>\n  &#8211; Web: MediaDevices API\u3001Web Audio API<br \/>\n  &#8211; Android: AudioRecord<br \/>\n&#8211; PCM\u683c\u5f0f\uff08\u91c7\u6837\u7387\u3001\u4f4d\u6df1\u5ea6\u3001\u58f0\u9053\u6570\uff09<br \/>\n&#8211; \u91c7\u6837\u53c2\u6570<br \/>\n  &#8211; \u91c7\u6837\u7387\uff1a8kHz-48kHz\uff08\u7535\u8bdd\u8d28\u91cf 8kHz\u3001CD\u8d28\u91cf 44.1kHz\u3001\u9ad8\u4fdd\u771f 48kHz\uff09<br \/>\n  &#8211; \u4f4d\u6df1\u5ea6\uff1a8-bit\u300116-bit\u300124-bit\u300132-bit<br \/>\n  &#8211; \u58f0\u9053\uff1a\u5355\u58f0\u9053\u3001\u7acb\u4f53\u58f0\u3001\u591a\u58f0\u9053<br \/>\n&#8211; \u57fa\u7840\u97f3\u9891\u524d\u5904\u7406\uff08\u964d\u566a\u3001AEC\u56de\u58f0\u6d88\u9664\u3001AGC\u81ea\u52a8\u589e\u76ca\u3001VAD\u8bed\u97f3\u6d3b\u52a8\u68c0\u6d4b\uff09<\/p>\n<p><strong>\u9002\u7528\u573a\u666f\uff1a<\/strong> \u8bed\u97f3\u901a\u8bdd\u3001\u89c6\u9891\u4f1a\u8bae\u3001\u97f3\u9891\u5f55\u5236\u3001\u5b9e\u65f6\u901a\u4fe1<\/p>\n<hr \/>\n<h3><span class=\"ez-toc-section\" id=\"2_%E9%9F%B3%E9%A2%91%E5%89%8D%E5%A4%84%E7%90%86_%E2%9A%A0%EF%B8%8F\"><\/span>2. <a href=\".\/preprocessing.md\">\u97f3\u9891\u524d\u5904\u7406<\/a> \u26a0\ufe0f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Audio Preprocessing<\/strong><\/p>\n<p>\u5bf9\u91c7\u96c6\u5230\u7684\u539f\u59cb\u97f3\u9891\u8fdb\u884c\u9884\u5904\u7406\uff0c\u63d0\u5347\u97f3\u8d28\u6216\u6ee1\u8db3\u7279\u5b9a\u9700\u6c42\u3002<\/p>\n<p><strong>\u4e3b\u8981\u5185\u5bb9\uff1a<\/strong><br \/>\n&#8211; \u964d\u566a\uff08Noise Reduction\uff09<br \/>\n&#8211; \u56de\u58f0\u6d88\u9664\uff08AEC\uff09<br \/>\n&#8211; \u81ea\u52a8\u589e\u76ca\u63a7\u5236\uff08AGC\uff09<br \/>\n&#8211; \u5176\u4ed6\u9884\u5904\u7406\u6280\u672f<\/p>\n<p><strong>\u72b6\u6001\uff1a<\/strong> \ud83d\udcdd \u5f85\u8865\u5145\u5185\u5bb9<\/p>\n<hr \/>\n<h3><span class=\"ez-toc-section\" id=\"3_%E9%9F%B3%E9%A2%91%E7%BC%96%E7%A0%81_%E2%9C%85\"><\/span>3. <a href=\".\/encode.md\">\u97f3\u9891\u7f16\u7801<\/a> \u2705<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Audio Encoding<\/strong><\/p>\n<p>\u5c06\u539f\u59cb\u97f3\u9891\u6570\u636e\u538b\u7f29\u4e3a\u7279\u5b9a\u683c\u5f0f\uff0c\u51cf\u5c11\u6570\u636e\u91cf\u548c\u4f20\u8f93\u5e26\u5bbd\u3002\u8fd9\u662f\u97f3\u9891\u5904\u7406\u4e2d\u6700\u6838\u5fc3\u7684\u73af\u8282\u4e4b\u4e00\u3002<\/p>\n<p><strong>\u4e3b\u8981\u5185\u5bb9\uff1a<\/strong><br \/>\n&#8211; \u7f16\u7801\u6807\u51c6\u6982\u8ff0<br \/>\n  &#8211; <strong>AAC\uff08Advanced Audio Coding\uff09<\/strong>\uff1a\u57fa\u4e8eMDCT\uff0c\u7801\u738732-320kbps\uff0c\u5e7f\u6cdb\u4f7f\u7528<br \/>\n  &#8211; <strong>Opus<\/strong>\uff1a\u7ed3\u5408CELP\u548cMDCT\uff0c\u7801\u73876-510kbps\uff0c\u4f4e\u5ef6\u8fdf\uff082.5-60ms\uff09\uff0c\u5f00\u6e90\u514d\u8d39<br \/>\n  &#8211; <strong>SILK<\/strong>\uff1aSkype\u5f00\u53d1\uff0c\u4e13\u4e3a\u8bed\u97f3\u4f18\u5316\uff0c\u4f4e\u7801\u7387\u9ad8\u8d28\u91cf<br \/>\n  &#8211; <strong>G.711\/G.722<\/strong>\uff1a\u4f20\u7edf\u7535\u8bdd\u7cfb\u7edf\uff0c\u5ef6\u8fdf\u6781\u4f4e<br \/>\n  &#8211; <strong>MP3<\/strong>\uff1a\u7ecf\u5178\u683c\u5f0f\uff0c\u5e7f\u6cdb\u652f\u6301\u4f46\u538b\u7f29\u7387\u4e0d\u5982AAC<br \/>\n&#8211; \u7f16\u7801\u6838\u5fc3\u6982\u5ff5<br \/>\n  &#8211; \u7801\u7387\u63a7\u5236\uff08CBR\u3001VBR\u3001\u81ea\u9002\u5e94\u7801\u7387\uff09<br \/>\n  &#8211; \u91c7\u6837\u7387\u8f6c\u6362\uff08\u4e0a\u91c7\u6837\u3001\u4e0b\u91c7\u6837\u3001\u91cd\u91c7\u6837\u7b97\u6cd5\uff09<br \/>\n  &#8211; \u58f0\u9053\u5904\u7406\uff08\u5355\u58f0\u9053\u3001\u7acb\u4f53\u58f0\u3001\u591a\u58f0\u9053\uff09<br \/>\n  &#8211; \u7f16\u7801\u5ef6\u8fdf\uff08<code>\u5b9e\u65f6\u901a\u4fe1\u9700\u4f4e\u5ef6\u8fdf&lt;100ms<\/code>\uff09<br \/>\n&#8211; \u7f16\u7801\u65b9\u5f0f\u5bf9\u6bd4\u8868\uff08\u7801\u7387\u3001\u538b\u7f29\u7387\u3001\u5ef6\u8fdf\u3001\u8d28\u91cf\u3001\u517c\u5bb9\u6027\u3001\u4e13\u5229\uff09<br \/>\n&#8211; \u786c\u4ef6\u7f16\u7801\u652f\u6301<br \/>\n  &#8211; \u5404\u5e73\u53f0\u786c\u7f16\u786c\u89e3\u652f\u6301\uff08iOS\/macOS\u3001Android\u3001Windows\u3001Linux\uff09<br \/>\n  &#8211; 3A\u97f3\u9891\u5904\u7406\u652f\u6301\uff08AEC\u3001ANS\u3001AGC\uff09<br \/>\n  &#8211; \u786c\u7f16vs\u8f6f\u7f16\u5bf9\u6bd4<\/p>\n<p><strong>\u9002\u7528\u573a\u666f\uff1a<\/strong> \u8bed\u97f3\u901a\u8bdd\u3001\u97f3\u4e50\u6d41\u5a92\u4f53\u3001\u5b9e\u65f6\u901a\u4fe1\u3001\u97f3\u9891\u5b58\u50a8<\/p>\n<hr \/>\n<h3><span class=\"ez-toc-section\" id=\"4_%E9%9F%B3%E9%A2%91%E4%BC%A0%E8%BE%93_%E2%9C%85\"><\/span>4. <a href=\".\/transport.md\">\u97f3\u9891\u4f20\u8f93<\/a> \u2705<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Audio Transport<\/strong><\/p>\n<p>\u5c06\u7f16\u7801\u540e\u7684\u97f3\u9891\u6570\u636e\u901a\u8fc7\u7f51\u7edc\u4f20\u8f93\u5230\u63a5\u6536\u7aef\u3002<\/p>\n<p><strong>\u4e3b\u8981\u5185\u5bb9\uff1a<\/strong><br \/>\n&#8211; \u4f20\u8f93\u534f\u8bae<br \/>\n  &#8211; <strong>RTP\/RTCP<\/strong>\uff1a\u5b9e\u65f6\u4f20\u8f93\u534f\u8bae\uff0c\u7528\u4e8e\u97f3\u89c6\u9891\u6d41\u4f20\u8f93<br \/>\n  &#8211; <strong>RTMP<\/strong>\uff1a\u57fa\u4e8eTCP\uff0c\u5ef6\u8fdf\u8f83\u4f4e\uff0c\u7528\u4e8e\u76f4\u64ad\u63a8\u6d41<br \/>\n  &#8211; <strong>WebRTC<\/strong>\uff1a\u6d4f\u89c8\u5668\u5b9e\u65f6\u901a\u4fe1\uff0cP2P\u4f20\u8f93\uff0c\u5185\u7f6e\u62e5\u585e\u63a7\u5236<br \/>\n&#8211; \u4f20\u8f93\u673a\u5236<br \/>\n  &#8211; \u5206\u5305\u4e0e\u91cd\u7ec4\uff08\u97f3\u9891\u5e27\u5206\u5272\u3001\u5e8f\u5217\u53f7\u3001\u65f6\u95f4\u6233\uff09<br \/>\n  &#8211; \u4e22\u5305\u91cd\u4f20\uff08ARQ\u3001FEC\u524d\u5411\u7ea0\u9519\uff09<br \/>\n  &#8211; \u62e5\u585e\u63a7\u5236\uff08\u68c0\u6d4b\u7f51\u7edc\u62e5\u585e\u3001\u52a8\u6001\u8c03\u6574\u53d1\u9001\u901f\u7387\uff09<br \/>\n  &#8211; QoS\u4fdd\u969c\uff08\u4f18\u5148\u7ea7\u961f\u5217\u3001\u5e26\u5bbd\u9884\u7559\u3001\u6d41\u91cf\u6574\u5f62\uff09<br \/>\n&#8211; \u4f20\u8f93\u4f18\u5316<br \/>\n  &#8211; \u81ea\u9002\u5e94\u7801\u7387\uff08\u6839\u636e\u7f51\u7edc\u72b6\u51b5\u8c03\u6574\uff09<br \/>\n  &#8211; Jitter Buffer\uff08\u6296\u52a8\u7f13\u51b2\uff0c\u5e73\u6ed1\u7f51\u7edc\u6296\u52a8\uff09<br \/>\n  &#8211; \u7f13\u51b2\u7b56\u7565\uff08\u5e73\u8861\u5ef6\u8fdf\u548c\u6d41\u7545\u5ea6\uff09<\/p>\n<p><strong>\u9002\u7528\u573a\u666f\uff1a<\/strong> \u5b9e\u65f6\u901a\u4fe1\u3001\u8bed\u97f3\u901a\u8bdd\u3001\u97f3\u9891\u76f4\u64ad\u3001VoIP<\/p>\n<hr \/>\n<h3><span class=\"ez-toc-section\" id=\"5_%E9%9F%B3%E9%A2%91%E8%A7%A3%E7%A0%81_%E2%9C%85\"><\/span>5. <a href=\".\/decode.md\">\u97f3\u9891\u89e3\u7801<\/a> \u2705<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Audio Decoding<\/strong><\/p>\n<p>\u5c06\u63a5\u6536\u5230\u7684\u538b\u7f29\u97f3\u9891\u6570\u636e\u8fd8\u539f\u4e3a\u539f\u59cb\u97f3\u9891\uff08PCM\uff09\u6570\u636e\u3002<\/p>\n<p><strong>\u4e3b\u8981\u5185\u5bb9\uff1a<\/strong><br \/>\n&#8211; \u89e3\u7801\u5668\u7c7b\u578b<br \/>\n  &#8211; \u8f6f\u4ef6\u89e3\u7801\u5668<br \/>\n    &#8211; <strong>FFmpeg\/libavcodec<\/strong>\uff1a\u5f00\u6e90\uff0c\u652f\u6301\u51e0\u4e4e\u6240\u6709\u97f3\u9891\u683c\u5f0f<br \/>\n    &#8211; <strong>libopus<\/strong>\uff1aOpus\u4e13\u7528\u89e3\u7801\u5668<br \/>\n    &#8211; <strong>fdk-aac<\/strong>\uff1a\u9ad8\u8d28\u91cfAAC\u89e3\u7801\u5668<br \/>\n  &#8211; \u786c\u4ef6\u89e3\u7801\u5668\uff08SoC\u96c6\u6210\uff0c\u652f\u6301AAC\u3001MP3\u7b49\uff0c\u529f\u8017\u4f4e\uff09<br \/>\n&#8211; \u89e3\u7801\u6d41\u7a0b<br \/>\n  &#8211; \u7801\u6d41\u89e3\u6790\uff08\u89e3\u6790\u5bb9\u5668\u683c\u5f0fMP4\/FLV\/OGG\uff0c\u63d0\u53d6\u7f16\u7801\u53c2\u6570\uff09<br \/>\n  &#8211; \u97f3\u9891\u91cd\u5efa\uff08\u89e3\u7801\u5e27\u3001\u5e94\u7528\u53cd\u53d8\u6362IMDCT\u3001\u8f93\u51faPCM\uff09<br \/>\n  &#8211; \u9519\u8bef\u6062\u590d\uff08\u68c0\u6d4b\u4e22\u5305\u3001\u9519\u8bef\u9690\u85cf\u3001\u8bf7\u6c42\u91cd\u4f20\u6216FEC\uff09<br \/>\n&#8211; \u89e3\u7801\u4f18\u5316<br \/>\n  &#8211; \u591a\u7ebf\u7a0b\u89e3\u7801\uff08\u5e27\u7ea7\u5e76\u884c\uff09<br \/>\n  &#8211; \u786c\u4ef6\u52a0\u901f\uff08\u964d\u4f4eCPU\u5360\u7528\uff09<br \/>\n  &#8211; \u4f4e\u5ef6\u8fdf\u89e3\u7801\uff08\u51cf\u5c11\u7f13\u51b2\u3001\u5feb\u901f\u542f\u52a8\uff09<\/p>\n<p><strong>\u9002\u7528\u573a\u666f\uff1a<\/strong> \u97f3\u9891\u64ad\u653e\u5668\u3001\u5b9e\u65f6\u901a\u4fe1\u3001\u8bed\u97f3\u901a\u8bdd<\/p>\n<hr \/>\n<h3><span class=\"ez-toc-section\" id=\"6_%E9%9F%B3%E9%A2%91%E6%B8%B2%E6%9F%93%E6%92%AD%E6%94%BE_%E2%9C%85\"><\/span>6. <a href=\".\/render.md\">\u97f3\u9891\u6e32\u67d3\u64ad\u653e<\/a> \u2705<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Audio Rendering<\/strong><\/p>\n<p>\u5c06\u89e3\u7801\u540e\u7684\u97f3\u9891\u6570\u636e\u8f93\u51fa\u5230\u626c\u58f0\u5668\u6216\u8033\u673a\u8fdb\u884c\u64ad\u653e\u3002<\/p>\n<p><strong>\u4e3b\u8981\u5185\u5bb9\uff1a<\/strong><br \/>\n&#8211; \u6e32\u67d3\u65b9\u5f0f<br \/>\n  &#8211; \u5e73\u53f0\u97f3\u9891API<br \/>\n    &#8211; <strong>Linux<\/strong>: ALSA\u3001PulseAudio<br \/>\n    &#8211; <strong>macOS\/iOS<\/strong>: CoreAudio<br \/>\n    &#8211; <strong>Windows<\/strong>: DirectSound\u3001WASAPI<br \/>\n    &#8211; <strong>Web<\/strong>: Web Audio API<br \/>\n    &#8211; <strong>Android<\/strong>: AudioTrack\u3001AudioManager<br \/>\n  &#8211; \u97f3\u9891\u9a71\u52a8\u63a5\u53e3\uff08\u76f4\u63a5\u4e0e\u9a71\u52a8\u4ea4\u4e92\uff0c\u4f4e\u5ef6\u8fdf\u4f46\u517c\u5bb9\u6027\u5dee\uff09<br \/>\n  &#8211; \u97f3\u9891\u8bbe\u5907\u7ba1\u7406\uff08\u679a\u4e3e\u8bbe\u5907\u3001\u9009\u62e9\u8f93\u5165\/\u8f93\u51fa\u3001\u70ed\u63d2\u62d4\u5904\u7406\uff09<br \/>\n&#8211; \u6e32\u67d3\u4f18\u5316<br \/>\n  &#8211; \u97f3\u9891\u540c\u6b65\uff08\u4e0e\u7cfb\u7edf\u65f6\u949f\u540c\u6b65\u3001\u97f3\u89c6\u9891\u540c\u6b65\uff09<br \/>\n  &#8211; \u97f3\u91cf\u63a7\u5236\uff08\u7cfb\u7edf\u97f3\u91cf\u3001\u5e94\u7528\u97f3\u91cf\u3001\u6df7\u97f3\u5904\u7406\uff09<br \/>\n  &#8211; \u97f3\u6548\u5904\u7406\uff08\u5747\u8861\u5668EQ\u3001\u6df7\u54cdReverb\u3001\u538b\u7f29Compressor\u3001\u964d\u566a\uff09<br \/>\n&#8211; \u64ad\u653e\u63a7\u5236<br \/>\n  &#8211; \u64ad\u653e\/\u6682\u505c\/\u505c\u6b62\uff08\u63a7\u5236\u97f3\u9891\u6d41\u3001\u72b6\u6001\u7ba1\u7406\uff09<br \/>\n  &#8211; \u97f3\u91cf\u8c03\u8282\uff08\u5b9e\u65f6\u8c03\u6574\u3001\u9759\u97f3\u3001\u97f3\u91cf\u6e10\u53d8\uff09<br \/>\n  &#8211; \u64ad\u653e\u901f\u5ea6\u63a7\u5236\uff08\u500d\u901f\u64ad\u653e\u3001\u4fdd\u6301\u97f3\u8c03\u4e0d\u53d8\uff09<\/p>\n<p><strong>\u9002\u7528\u573a\u666f\uff1a<\/strong> \u97f3\u9891\u64ad\u653e\u5668\u3001\u5b9e\u65f6\u901a\u4fe1\u3001\u97f3\u4e50\u64ad\u653e<\/p>\n<hr \/>\n<h2><span class=\"ez-toc-section\" id=\"%E6%96%87%E6%A1%A3%E7%8A%B6%E6%80%81%E8%AF%B4%E6%98%8E\"><\/span>\u6587\u6863\u72b6\u6001\u8bf4\u660e<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>\u2705 <strong>\u5b8c\u6574\u6587\u6863<\/strong>\uff1a\u5185\u5bb9\u5df2\u5b8c\u5584\uff0c\u53ef\u76f4\u63a5\u53c2\u8003\u4f7f\u7528<\/li>\n<li>\u26a0\ufe0f <strong>\u5f85\u8865\u5145<\/strong>\uff1a\u6587\u6863\u6846\u67b6\u5df2\u5efa\u7acb\uff0c\u4f46\u5185\u5bb9\u5c1a\u672a\u5b8c\u5584<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"%E5%BF%AB%E9%80%9F%E5%AF%BC%E8%88%AA\"><\/span>\u5feb\u901f\u5bfc\u822a<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"%E6%8C%89%E4%BD%BF%E7%94%A8%E5%9C%BA%E6%99%AF%E6%9F%A5%E6%89%BE\"><\/span>\u6309\u4f7f\u7528\u573a\u666f\u67e5\u627e<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>\u8bed\u97f3\/\u89c6\u9891\u901a\u8bdd\uff08\u5b9e\u65f6\u901a\u4fe1\uff09<\/strong><br \/>\n&#8211; <a href=\".\/capture.md\">\u97f3\u9891\u91c7\u96c6<\/a> \u2192 <a href=\".\/encode.md\">\u97f3\u9891\u7f16\u7801<\/a> \u2192 <a href=\".\/transport.md\">\u97f3\u9891\u4f20\u8f93<\/a> \u2192 <a href=\".\/decode.md\">\u97f3\u9891\u89e3\u7801<\/a> \u2192 <a href=\".\/render.md\">\u97f3\u9891\u6e32\u67d3<\/a><br \/>\n&#8211; \u63a8\u8350\u7f16\u7801\uff1aOpus\uff08\u4f4e\u5ef6\u8fdf\u3001\u9ad8\u8d28\u91cf\uff09<br \/>\n&#8211; \u63a8\u8350\u534f\u8bae\uff1aWebRTC\uff08\u5185\u7f6e3A\u5904\u7406\u3001\u62e5\u585e\u63a7\u5236\uff09<\/p>\n<p><strong>\u97f3\u4e50\u6d41\u5a92\u4f53<\/strong><br \/>\n&#8211; <a href=\".\/encode.md\">\u97f3\u9891\u7f16\u7801<\/a> \u2192 <a href=\".\/transport.md\">\u97f3\u9891\u4f20\u8f93<\/a> \u2192 <a href=\".\/decode.md\">\u97f3\u9891\u89e3\u7801<\/a> \u2192 <a href=\".\/render.md\">\u97f3\u9891\u6e32\u67d3<\/a><br \/>\n&#8211; \u63a8\u8350\u7f16\u7801\uff1aAAC\uff08\u9ad8\u8d28\u91cf\u3001\u5e7f\u6cdb\u652f\u6301\uff09\u6216Opus\uff08\u5f00\u6e90\u3001\u9ad8\u6548\uff09<br \/>\n&#8211; \u63a8\u8350\u534f\u8bae\uff1aHTTP\/HLS\uff08\u81ea\u9002\u5e94\u7801\u7387\uff09<\/p>\n<p><strong>\u97f3\u9891\u5f55\u5236<\/strong><br \/>\n&#8211; <a href=\".\/capture.md\">\u97f3\u9891\u91c7\u96c6<\/a> \u2192 <a href=\".\/preprocessing.md\">\u97f3\u9891\u524d\u5904\u7406<\/a> \u2192 <a href=\".\/encode.md\">\u97f3\u9891\u7f16\u7801<\/a><br \/>\n&#8211; \u63a8\u8350\u91c7\u96c6\u53c2\u6570\uff1a48kHz\u300116-bit\u3001\u7acb\u4f53\u58f0<br \/>\n&#8211; \u63a8\u8350\u7f16\u7801\uff1aAAC\u6216FLAC\uff08\u65e0\u635f\uff09<\/p>\n<p><strong>\u64ad\u5ba2\/\u7535\u53f0<\/strong><br \/>\n&#8211; <a href=\".\/capture.md\">\u97f3\u9891\u91c7\u96c6<\/a> \u2192 <a href=\".\/encode.md\">\u97f3\u9891\u7f16\u7801<\/a> \u2192 <a href=\".\/transport.md\">\u97f3\u9891\u4f20\u8f93<\/a><br \/>\n&#8211; \u63a8\u8350\u7f16\u7801\uff1aAAC\u6216MP3\uff08\u517c\u5bb9\u6027\u597d\uff09<br \/>\n&#8211; \u63a8\u8350\u7801\u7387\uff1a64-128kbps\uff08\u8bed\u97f3\uff09<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E6%8C%89%E6%8A%80%E6%9C%AF%E9%A2%86%E5%9F%9F%E6%9F%A5%E6%89%BE\"><\/span>\u6309\u6280\u672f\u9886\u57df\u67e5\u627e<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>\u7f16\u89e3\u7801\u6280\u672f<\/strong><br \/>\n&#8211; <a href=\".\/encode.md\">\u97f3\u9891\u7f16\u7801<\/a>\uff1aAAC\u3001Opus\u3001SILK\u3001G.711\/G.722\u3001MP3<br \/>\n&#8211; <a href=\".\/decode.md\">\u97f3\u9891\u89e3\u7801<\/a>\uff1aFFmpeg\u3001libopus\u3001fdk-aac\u3001\u786c\u4ef6\u89e3\u7801<\/p>\n<p><strong>\u7f51\u7edc\u4f20\u8f93<\/strong><br \/>\n&#8211; <a href=\".\/transport.md\">\u97f3\u9891\u4f20\u8f93<\/a>\uff1aRTP\/RTCP\u3001RTMP\u3001WebRTC\u3001\u4e22\u5305\u5904\u7406\u3001\u62e5\u585e\u63a7\u5236<\/p>\n<p><strong>\u97f3\u9891\u5904\u7406\u7b97\u6cd5<\/strong><br \/>\n&#8211; <a href=\".\/capture.md\">\u97f3\u9891\u91c7\u96c6<\/a> \u2192 \u57fa\u7840\u97f3\u9891\u524d\u5904\u7406\uff08\u964d\u566a\u3001AEC\u3001AGC\u3001VAD\uff09<br \/>\n&#8211; <a href=\".\/preprocessing.md\">\u97f3\u9891\u524d\u5904\u7406<\/a>\uff1a\u5f85\u8865\u5145<br \/>\n&#8211; <a href=\".\/encode.md\">\u97f3\u9891\u7f16\u7801<\/a> \u2192 3A\u97f3\u9891\u5904\u7406\u652f\u6301<\/p>\n<p><strong>\u786c\u4ef6\u52a0\u901f<\/strong><br \/>\n&#8211; <a href=\".\/encode.md\">\u97f3\u9891\u7f16\u7801<\/a> \u2192 3.4 \u786c\u4ef6\u7f16\u7801\u652f\u6301<br \/>\n&#8211; <a href=\".\/decode.md\">\u97f3\u9891\u89e3\u7801<\/a> \u2192 5.1 \u786c\u4ef6\u89e3\u7801\u5668<\/p>\n<p><strong>\u5e73\u53f0\u97f3\u9891API<\/strong><br \/>\n&#8211; <a href=\".\/capture.md\">\u97f3\u9891\u91c7\u96c6<\/a> \u2192 1.2 \u97f3\u9891\u63a5\u53e3<br \/>\n&#8211; <a href=\".\/render.md\">\u97f3\u9891\u6e32\u67d3<\/a> \u2192 6.1 \u6e32\u67d3\u65b9\u5f0f<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E6%8C%89%E7%BC%96%E7%A0%81%E6%A0%BC%E5%BC%8F%E6%9F%A5%E6%89%BE\"><\/span>\u6309\u7f16\u7801\u683c\u5f0f\u67e5\u627e<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>AAC<\/strong><br \/>\n&#8211; <a href=\".\/encode.md\">\u97f3\u9891\u7f16\u7801<\/a> \u2192 3.1 \u7f16\u7801\u6807\u51c6\u6982\u8ff0 \u2192 AAC<br \/>\n&#8211; \u7279\u70b9\uff1a\u538b\u7f29\u7387\u9ad8\u3001\u8d28\u91cf\u597d\u3001\u5e7f\u6cdb\u652f\u6301<br \/>\n&#8211; \u9002\u7528\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; <a href=\".\/encode.md\">\u97f3\u9891\u7f16\u7801<\/a> \u2192 3.1 \u7f16\u7801\u6807\u51c6\u6982\u8ff0 \u2192 Opus<br \/>\n&#8211; \u7279\u70b9\uff1a\u538b\u7f29\u7387\u9ad8\u3001\u5ef6\u8fdf\u4f4e\uff082.5-60ms\uff09\u3001\u5f00\u6e90\u514d\u8d39<br \/>\n&#8211; \u9002\u7528\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; <a href=\".\/encode.md\">\u97f3\u9891\u7f16\u7801<\/a> \u2192 3.1 \u7f16\u7801\u6807\u51c6\u6982\u8ff0 \u2192 G.711\/G.722<br \/>\n&#8211; \u7279\u70b9\uff1a\u5ef6\u8fdf\u6781\u4f4e\u3001\u8d28\u91cf\u4e00\u822c<br \/>\n&#8211; \u9002\u7528\uff1a\u4f20\u7edf\u7535\u8bdd\u7cfb\u7edf\u3001VoIP<\/p>\n<p><strong>MP3<\/strong><br \/>\n&#8211; <a href=\".\/encode.md\">\u97f3\u9891\u7f16\u7801<\/a> \u2192 3.1 \u7f16\u7801\u6807\u51c6\u6982\u8ff0 \u2192 MP3<br \/>\n&#8211; \u7279\u70b9\uff1a\u5e7f\u6cdb\u652f\u6301\u3001\u538b\u7f29\u7387\u4e2d\u7b49<br \/>\n&#8211; \u9002\u7528\uff1a\u97f3\u4e50\u5b58\u50a8\u3001\u64ad\u653e<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E9%9F%B3%E9%A2%91%E5%8F%82%E6%95%B0%E9%80%9F%E6%9F%A5%E8%A1%A8\"><\/span>\u97f3\u9891\u53c2\u6570\u901f\u67e5\u8868<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"%E9%87%87%E6%A0%B7%E7%8E%87%E5%AF%B9%E7%85%A7%E8%A1%A8\"><\/span>\u91c7\u6837\u7387\u5bf9\u7167\u8868<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<table>\n<thead>\n<tr>\n<th>\u91c7\u6837\u7387<\/th>\n<th>\u8d28\u91cf\u7b49\u7ea7<\/th>\n<th>\u5178\u578b\u5e94\u7528<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>8kHz<\/td>\n<td>\u7535\u8bdd\u8d28\u91cf<\/td>\n<td>\u7535\u8bdd\u7cfb\u7edf\u3001\u5bf9\u8bb2<\/td>\n<\/tr>\n<tr>\n<td>16kHz<\/td>\n<td>\u5bbd\u5e26\u8bed\u97f3<\/td>\n<td>VoIP\u3001\u8bed\u97f3\u901a\u8bdd<\/td>\n<\/tr>\n<tr>\n<td>24kHz<\/td>\n<td>\u9ad8\u8d28\u91cf\u8bed\u97f3<\/td>\n<td>\u89c6\u9891\u4f1a\u8bae<\/td>\n<\/tr>\n<tr>\n<td>32kHz<\/td>\n<td>FM\u5e7f\u64ad<\/td>\n<td>\u5e7f\u64ad\u3001\u89c6\u9891<\/td>\n<\/tr>\n<tr>\n<td>44.1kHz<\/td>\n<td>CD\u8d28\u91cf<\/td>\n<td>\u97f3\u4e50\u3001CD<\/td>\n<\/tr>\n<tr>\n<td>48kHz<\/td>\n<td>\u4e13\u4e1a\u7ea7<\/td>\n<td>\u4e13\u4e1a\u97f3\u9891\u3001\u89c6\u9891<\/td>\n<\/tr>\n<tr>\n<td>96kHz+<\/td>\n<td>\u8d85\u9ad8\u4fdd\u771f<\/td>\n<td>\u4e13\u4e1a\u97f3\u9891\u5236\u4f5c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><span class=\"ez-toc-section\" id=\"%E7%A0%81%E7%8E%87%E6%8E%A8%E8%8D%90%E8%A1%A8\"><\/span>\u7801\u7387\u63a8\u8350\u8868<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<table>\n<thead>\n<tr>\n<th>\u5185\u5bb9\u7c7b\u578b<\/th>\n<th>\u63a8\u8350\u7f16\u7801<\/th>\n<th>\u63a8\u8350\u7801\u7387<\/th>\n<th>\u8bf4\u660e<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u8bed\u97f3\u901a\u8bdd<\/td>\n<td>Opus<\/td>\n<td>16-32kbps<\/td>\n<td>\u7a84\u5e26\/\u5bbd\u5e26\u8bed\u97f3<\/td>\n<\/tr>\n<tr>\n<td>\u89c6\u9891\u4f1a\u8bae<\/td>\n<td>Opus<\/td>\n<td>32-64kbps<\/td>\n<td>\u9ad8\u8d28\u91cf\u8bed\u97f3<\/td>\n<\/tr>\n<tr>\n<td>\u97f3\u4e50\u6d41\u5a92\u4f53<\/td>\n<td>AAC\/Opus<\/td>\n<td>128-192kbps<\/td>\n<td>\u9ad8\u8d28\u91cf\u7acb\u4f53\u58f0<\/td>\n<\/tr>\n<tr>\n<td>\u9ad8\u4fdd\u771f\u97f3\u4e50<\/td>\n<td>AAC<\/td>\n<td>256-320kbps<\/td>\n<td>\u63a5\u8fd1\u65e0\u635f<\/td>\n<\/tr>\n<tr>\n<td>\u64ad\u5ba2\/\u7535\u53f0<\/td>\n<td>AAC\/MP3<\/td>\n<td>64-128kbps<\/td>\n<td>\u8bed\u97f3\u4e3a\u4e3b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><span class=\"ez-toc-section\" id=\"%E5%BB%B6%E8%BF%9F%E5%AF%B9%E7%85%A7%E8%A1%A8\"><\/span>\u5ef6\u8fdf\u5bf9\u7167\u8868<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<table>\n<thead>\n<tr>\n<th>\u5e94\u7528\u573a\u666f<\/th>\n<th>\u53ef\u63a5\u53d7\u5ef6\u8fdf<\/th>\n<th>\u63a8\u8350\u65b9\u6848<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u5b9e\u65f6\u901a\u8bdd<\/td>\n<td><code>&lt;100ms<\/code><\/td>\n<td>Opus + WebRTC<\/td>\n<\/tr>\n<tr>\n<td>\u89c6\u9891\u4f1a\u8bae<\/td>\n<td><code>&lt;150ms<\/code><\/td>\n<td>Opus + RTP<\/td>\n<\/tr>\n<tr>\n<td>\u97f3\u4e50\u534f\u4f5c<\/td>\n<td><code>&lt;50ms<\/code><\/td>\n<td>\u4f4e\u5ef6\u8fdfOpus + \u4e13\u7528\u534f\u8bae<\/td>\n<\/tr>\n<tr>\n<td>\u76f4\u64ad<\/td>\n<td>2-5\u79d2<\/td>\n<td>AAC + RTMP\/HLS<\/td>\n<\/tr>\n<tr>\n<td>\u70b9\u64ad<\/td>\n<td>&gt;5\u79d2<\/td>\n<td>AAC + HTTP<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><span class=\"ez-toc-section\" id=\"%E7%9B%B8%E5%85%B3%E8%B5%84%E6%BA%90\"><\/span>\u76f8\u5173\u8d44\u6e90<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"%E4%B8%8A%E7%BA%A7%E7%9B%AE%E5%BD%95\"><\/span>\u4e0a\u7ea7\u76ee\u5f55<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><a href=\"..\/business\/av_overview.md\">\u97f3\u89c6\u9891\u4e1a\u52a1\u603b\u89c8<\/a>\uff1a\u97f3\u89c6\u9891\u4e1a\u52a1\u5c42\u9762\u7684\u5b8c\u6574\u4ecb\u7ecd<\/li>\n<li><a href=\"..\/video\/\">\u89c6\u9891\u5904\u7406<\/a>\uff1a\u89c6\u9891\u76f8\u5173\u6280\u672f\u6587\u6863<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"%E5%A4%96%E9%83%A8%E5%8F%82%E8%80%83\"><\/span>\u5916\u90e8\u53c2\u8003<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>\u7f16\u89e3\u7801\u6807\u51c6<\/strong><\/li>\n<li>Opus\u5b98\u65b9\uff1ahttps:\/\/opus-codec.org\/<\/li>\n<li>AAC\u89c4\u8303\uff1aISO\/IEC 14496-3<\/li>\n<li>FFmpeg\u6587\u6863\uff1ahttps:\/\/ffmpeg.org\/documentation.html<\/li>\n<li><strong>\u4f20\u8f93\u534f\u8bae<\/strong><\/li>\n<li>WebRTC\u6807\u51c6\uff1ahttps:\/\/webrtc.org\/<\/li>\n<li>RTP\/RTCP\uff1aRFC 3550\u3001RFC 3551<\/li>\n<li><strong>\u5e73\u53f0\u97f3\u9891API<\/strong><\/li>\n<li>ALSA\uff08Linux\uff09\uff1ahttps:\/\/www.alsa-project.org\/<\/li>\n<li>CoreAudio\uff08macOS\/iOS\uff09\uff1aApple Developer Documentation<\/li>\n<li>WASAPI\uff08Windows\uff09\uff1aMicrosoft Docs<\/li>\n<li>Web Audio API\uff1aW3C Specification<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"%E7%9B%B8%E5%85%B3%E5%B7%A5%E5%85%B7\"><\/span>\u76f8\u5173\u5de5\u5177<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>\u7f16\u89e3\u7801\u5de5\u5177<\/strong><\/li>\n<li>FFmpeg\uff1a\u5168\u80fd\u97f3\u89c6\u9891\u5904\u7406\u5de5\u5177<\/li>\n<li>Audacity\uff1a\u5f00\u6e90\u97f3\u9891\u7f16\u8f91\u5668<\/li>\n<li>opus-tools\uff1aOpus\u7f16\u89e3\u7801\u5de5\u5177<\/li>\n<li><strong>\u5206\u6790\u5de5\u5177<\/strong><\/li>\n<li>Wireshark\uff1a\u7f51\u7edc\u534f\u8bae\u5206\u6790<\/li>\n<li>Spectrogram\uff1a\u9891\u8c31\u5206\u6790<\/li>\n<li>Audio Precision\uff1a\u4e13\u4e1a\u97f3\u9891\u6d4b\u8bd5<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"%E6%96%87%E6%A1%A3%E7%BB%B4%E6%8A%A4\"><\/span>\u6587\u6863\u7ef4\u62a4<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u5982\u9700\u66f4\u65b0\u6216\u8865\u5145\u6587\u6863\u5185\u5bb9\uff0c\u8bf7\u786e\u4fdd\uff1a<br \/>\n1. \u9075\u5faa\u73b0\u6709\u7684\u6587\u6863\u7ed3\u6784\u548c\u683c\u5f0f<br \/>\n2. \u4fdd\u6301\u7ae0\u8282\u7f16\u53f7\u7684\u4e00\u81f4\u6027\uff08\u4e0e\u97f3\u9891\u5904\u7406\u7ba1\u9053\u987a\u5e8f\u5bf9\u5e94\uff09<br \/>\n3. \u66f4\u65b0\u672coverview\u6587\u6863\u4e2d\u7684\u76f8\u5e94\u63cf\u8ff0<br \/>\n4. \u6dfb\u52a0\u5b9e\u9645\u5e94\u7528\u573a\u666f\u548c\u53c2\u6570\u5efa\u8bae<br \/>\n5. \u8865\u5145\u7f16\u7801\u683c\u5f0f\u548c\u5e73\u53f0API\u7684\u6700\u65b0\u652f\u6301\u60c5\u51b5<\/p>\n<hr \/>\n<p>\u6700\u540e\u66f4\u65b0\uff1a2026-01-21<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Audio Processing Overview \u6982\u8ff0 \u672c\u76ee\u5f55\u5305\u542b\u97f3\u9891\u5904\u7406\u5b8c\u6574\u6d41\u7a0b\u7684\u6280\u672f\u6587\u6863\uff0c\u6db5\u76d6\u4ece\u97f3\u9891\u91c7\u96c6 [&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 Audio Processing Overview\u6982\u8ff0\u97f3\u9891\u5904\u7406\u7ba1\u9053\u6587\u6863\u76ee\u5f551. \u97f3\u9891\u91c7\u96c6 \u27052. \u97f3\u9891\u524d\u5904\u7406 \u26a0\ufe0f3. \u97f3\u9891\u7f16\u7801 \u27054. \u97f3\u9891\u4f20\u8f93 \u27055. \u97f3\u9891\u89e3\u7801 \u27056. \u97f3\u9891\u6e32&hellip;<\/p>\n","category_list":"<a href=\"https:\/\/www.v.ixriver.com\/?cat=30\" rel=\"category\">\u97f3\u9891<\/a>","author_info":{"name":"admin","url":"https:\/\/www.v.ixriver.com\/?author=1"},"comments_num":"0 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