{"id":491,"date":"2025-05-14T00:07:13","date_gmt":"2025-05-13T16:07:13","guid":{"rendered":"https:\/\/trantor.ink\/?p=491"},"modified":"2025-05-14T00:07:14","modified_gmt":"2025-05-13T16:07:14","slug":"android-media-audiofx-loudnessenhance-%e4%bb%8b%e7%bb%8d","status":"publish","type":"post","link":"https:\/\/trantor.ink\/?p=491","title":{"rendered":"android.media.audiofx.LoudnessEnhance \u4ecb\u7ecd"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_81 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\" style=\"cursor:inherit\">Table of Contents<\/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-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/trantor.ink\/?p=491\/#%E2%9C%85_%E4%B8%80%E3%80%81%E5%9F%BA%E6%9C%AC%E7%94%A8%E9%80%94\" >\u2705 \u4e00\u3001\u57fa\u672c\u7528\u9014<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/trantor.ink\/?p=491\/#%E2%9C%85_%E4%BA%8C%E3%80%81%E5%9F%BA%E6%9C%AC%E7%94%A8%E6%B3%95\" >\u2705 \u4e8c\u3001\u57fa\u672c\u7528\u6cd5<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/trantor.ink\/?p=491\/#1_%E5%88%9B%E5%BB%BA%E5%AE%9E%E4%BE%8B\" >1. \u521b\u5efa\u5b9e\u4f8b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/trantor.ink\/?p=491\/#2_%E8%AE%BE%E7%BD%AE%E5%A2%9E%E7%9B%8A%EF%BC%88Gain%EF%BC%89\" >2. \u8bbe\u7f6e\u589e\u76ca\uff08Gain\uff09<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/trantor.ink\/?p=491\/#3_%E5%90%AF%E7%94%A8%E6%88%96%E7%A6%81%E7%94%A8\" >3. \u542f\u7528\u6216\u7981\u7528<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/trantor.ink\/?p=491\/#4_%E9%87%8A%E6%94%BE%E8%B5%84%E6%BA%90\" >4. \u91ca\u653e\u8d44\u6e90<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/trantor.ink\/?p=491\/#%E2%9C%85_%E4%B8%89%E3%80%81%E5%AE%8C%E6%95%B4%E7%A4%BA%E4%BE%8B\" >\u2705 \u4e09\u3001\u5b8c\u6574\u793a\u4f8b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/trantor.ink\/?p=491\/#%E2%9A%A0%EF%B8%8F_%E5%9B%9B%E3%80%81%E6%B3%A8%E6%84%8F%E4%BA%8B%E9%A1%B9\" >\u26a0\ufe0f \u56db\u3001\u6ce8\u610f\u4e8b\u9879<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/trantor.ink\/?p=491\/#%E2%9C%85_%E4%BA%94%E3%80%81%E5%88%A4%E6%96%AD%E8%AE%BE%E5%A4%87%E6%98%AF%E5%90%A6%E6%94%AF%E6%8C%81\" >\u2705 \u4e94\u3001\u5224\u65ad\u8bbe\u5907\u662f\u5426\u652f\u6301<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/trantor.ink\/?p=491\/#%E2%9C%85_%E5%85%AD%E3%80%81%E4%B8%8E%E5%85%B6%E4%BB%96%E9%9F%B3%E9%A2%91%E5%A4%84%E7%90%86%E7%B1%BB%E5%AF%B9%E6%AF%94\" >\u2705 \u516d\u3001\u4e0e\u5176\u4ed6\u97f3\u9891\u5904\u7406\u7c7b\u5bf9\u6bd4<\/a><\/li><\/ul><\/nav><\/div>\n\n<p>android.media.audiofx.LoudnessEnhancer \u662f Android \u63d0\u4f9b\u7684\u97f3\u9891\u540e\u5904\u7406\u6548\u679c\u7c7b\u4e4b\u4e00\uff0c\u7528\u4e8e\u589e\u5f3a\u97f3\u9891\u7684\u54cd\u5ea6\uff08Loudness\uff09\u3002\u5b83\u7ee7\u627f\u81ea android.media.audiofx.AudioEffect\uff0c\u53ef\u5728 API \u7ea7\u522b 19\uff08Android 4.4\uff09\u53ca\u4ee5\u4e0a\u4f7f\u7528\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E2%9C%85_%E4%B8%80%E3%80%81%E5%9F%BA%E6%9C%AC%E7%94%A8%E9%80%94\"><\/span><strong>\u2705 \u4e00\u3001\u57fa\u672c\u7528\u9014<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>LoudnessEnhancer \u7684\u4f5c\u7528\u662f\u901a\u8fc7\u63d0\u5347\u97f3\u9891\u4fe1\u53f7\u7684\u589e\u76ca\u6765\u589e\u5f3a\u54cd\u5ea6\uff0c\u4f46\u5e76\u4e0d\u4e00\u5b9a\u7b49\u540c\u4e8e\u97f3\u91cf\u52a0\u5927\u3002\u5b83\u66f4\u50cf\u662f\u4e00\u79cd\u300c\u97f3\u9891\u538b\u7f29+\u653e\u5927\u300d\u7684\u6548\u679c\uff0c\u9002\u7528\u4e8e\u63d0\u5347\u4eba\u58f0\u6216\u80cc\u666f\u97f3\u9891\u7684\u611f\u77e5\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E2%9C%85_%E4%BA%8C%E3%80%81%E5%9F%BA%E6%9C%AC%E7%94%A8%E6%B3%95\"><\/span><strong>\u2705 \u4e8c\u3001\u57fa\u672c\u7528\u6cd5<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_%E5%88%9B%E5%BB%BA%E5%AE%9E%E4%BE%8B\"><\/span><strong>1. \u521b\u5efa\u5b9e\u4f8b<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u4f60\u9700\u8981\u4e3a\u67d0\u4e2a\u64ad\u653e\u4f1a\u8bdd\u521b\u5efa LoudnessEnhancer \u5b9e\u4f8b\uff0c\u901a\u5e38\u4f7f\u7528\u97f3\u9891\u64ad\u653e\u7684 audioSessionId\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u5047\u8bbe\u4f60\u5df2\u7ecf\u6709\u4e00\u4e2a MediaPlayer \u6216 AudioTrack \u7684 audioSessionId\nval audioSessionId = mediaPlayer.audioSessionId\n\n\/\/ \u521b\u5efa LoudnessEnhancer \u5b9e\u4f8b\nval loudnessEnhancer = LoudnessEnhancer(audioSessionId)<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_%E8%AE%BE%E7%BD%AE%E5%A2%9E%E7%9B%8A%EF%BC%88Gain%EF%BC%89\"><\/span><strong>2. \u8bbe\u7f6e\u589e\u76ca\uff08Gain\uff09<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>LoudnessEnhancer \u4f7f\u7528\u7684\u662f\u6beb\u8d1d\uff08mB, milliBels\uff09\uff0c1000 mB = 1 dB\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u8bbe\u7f6e\u76ee\u6807\u589e\u76ca\uff0c\u4f8b\u5982 1000 mB = 1 dB\nloudnessEnhancer.setTargetGain(1000)<\/pre>\n\n\n\n<p>\u901a\u5e38\u63a8\u8350\u7684\u589e\u76ca\u8303\u56f4\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5408\u7406\u8303\u56f4\uff1a0 ~ 5000 mB\uff080 ~ 5 dB\uff09<\/li>\n\n\n\n<li>\u4e0d\u5efa\u8bae\u8bbe\u7f6e\u8fc7\u9ad8\uff0c\u907f\u514d\u97f3\u9891\u5931\u771f<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_%E5%90%AF%E7%94%A8%E6%88%96%E7%A6%81%E7%94%A8\"><\/span><strong>3. \u542f\u7528\u6216\u7981\u7528<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u542f\u7528\u54cd\u5ea6\u589e\u5f3a\nloudnessEnhancer.enabled = true\n\n\/\/ \u7981\u7528\nloudnessEnhancer.enabled = false<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_%E9%87%8A%E6%94%BE%E8%B5%84%E6%BA%90\"><\/span><strong>4. \u91ca\u653e\u8d44\u6e90<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">loudnessEnhancer.release()<\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E2%9C%85_%E4%B8%89%E3%80%81%E5%AE%8C%E6%95%B4%E7%A4%BA%E4%BE%8B\"><\/span><strong>\u2705 \u4e09\u3001\u5b8c\u6574\u793a\u4f8b<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">val mediaPlayer = MediaPlayer.create(context, R.raw.sample_audio)\nval loudnessEnhancer = LoudnessEnhancer(mediaPlayer.audioSessionId)\n\nloudnessEnhancer.setTargetGain(1500) \/\/ \u589e\u52a0 1.5 dB\nloudnessEnhancer.enabled = true\n\nmediaPlayer.start()\n\n\/\/ \u8bb0\u5f97\u91ca\u653e\u8d44\u6e90\nmediaPlayer.setOnCompletionListener {\n    loudnessEnhancer.release()\n    mediaPlayer.release()\n}<\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E2%9A%A0%EF%B8%8F_%E5%9B%9B%E3%80%81%E6%B3%A8%E6%84%8F%E4%BA%8B%E9%A1%B9\"><\/span><strong>\u26a0\ufe0f \u56db\u3001\u6ce8\u610f\u4e8b\u9879<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th><strong>\u6ce8\u610f\u70b9<\/strong><\/th><th><strong>\u8bf4\u660e<\/strong><\/th><\/tr><\/thead><tbody><tr><td><strong>\u97f3\u9891\u4f1a\u8bdd ID<\/strong><\/td><td>LoudnessEnhancer \u53ea\u80fd\u4f5c\u7528\u4e8e\u6709\u97f3\u9891\u4f1a\u8bdd ID \u7684\u97f3\u9891\u8f68\u9053\uff0c\u5982 MediaPlayer\u3001AudioTrack \u7b49\u3002<\/td><\/tr><tr><td><strong>\u64ad\u653e\u524d\u521b\u5efa\u66f4\u5b89\u5168<\/strong><\/td><td>\u6700\u597d\u5728\u5f00\u59cb\u64ad\u653e\u524d\u5c31\u521d\u59cb\u5316\u5e76\u542f\u7528\uff0c\u4ee5\u786e\u4fdd\u4e0d\u4e22\u5931\u6548\u679c\u3002<\/td><\/tr><tr><td><strong>\u8bbe\u5907\u517c\u5bb9\u6027<\/strong><\/td><td>\u90e8\u5206\u4f4e\u7aef\u8bbe\u5907\u53ef\u80fd\u4e0d\u652f\u6301\u6b64 AudioEffect\uff0c\u5efa\u8bae\u52a0 try-catch\u3002<\/td><\/tr><tr><td><strong>\u589e\u76ca\u4e0a\u9650<\/strong><\/td><td>\u8bbe\u7f6e\u8fc7\u9ad8\u4f1a\u5bfc\u81f4\u7834\u97f3\u3001\u5931\u771f\u751a\u81f3\u5f15\u53d1\u8033\u673a\u635f\u574f\uff0c\u5efa\u8bae\u8bbe\u7f6e\u589e\u76ca\u4e0d\u8d85\u8fc7 5000 mB\u3002<\/td><\/tr><tr><td><strong>\u4e0d\u5f71\u54cd\u7cfb\u7edf\u97f3\u91cf<\/strong><\/td><td>\u5b83\u589e\u5f3a\u7684\u662f\u64ad\u653e\u6d41\u7684\u54cd\u5ea6\uff0c\u4e0d\u4f1a\u6539\u53d8\u8bbe\u5907\u97f3\u91cf\u3002<\/td><\/tr><tr><td><strong>\u4e0e\u5176\u4ed6 AudioEffect \u51b2\u7a81<\/strong><\/td><td>\u540c\u65f6\u4f7f\u7528\u591a\u4e2a AudioEffect\uff08\u5982 Equalizer\u3001Virtualizer\uff09\u65f6\uff0c\u53ef\u80fd\u4f1a\u6709\u51b2\u7a81\uff0c\u53d6\u51b3\u4e8e\u8bbe\u5907\u5b9e\u73b0\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E2%9C%85_%E4%BA%94%E3%80%81%E5%88%A4%E6%96%AD%E8%AE%BE%E5%A4%87%E6%98%AF%E5%90%A6%E6%94%AF%E6%8C%81\"><\/span><strong>\u2705 \u4e94\u3001\u5224\u65ad\u8bbe\u5907\u662f\u5426\u652f\u6301<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">val effects = AudioEffect.queryEffects()\nval supported = effects.any {\n    it.type == AudioEffect.EFFECT_TYPE_LOUDNESS_ENHANCER\n}<\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E2%9C%85_%E5%85%AD%E3%80%81%E4%B8%8E%E5%85%B6%E4%BB%96%E9%9F%B3%E9%A2%91%E5%A4%84%E7%90%86%E7%B1%BB%E5%AF%B9%E6%AF%94\"><\/span><strong>\u2705 \u516d\u3001\u4e0e\u5176\u4ed6\u97f3\u9891\u5904\u7406\u7c7b\u5bf9\u6bd4<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th><strong>\u7c7b\u540d<\/strong><\/th><th><strong>\u529f\u80fd<\/strong><\/th><th><strong>\u4f7f\u7528\u573a\u666f<\/strong><\/th><\/tr><\/thead><tbody><tr><td>Equalizer<\/td><td>\u5747\u8861\u5668<\/td><td>\u8c03\u6574\u4e0d\u540c\u9891\u6bb5\u7684\u97f3\u91cf<\/td><\/tr><tr><td>BassBoost<\/td><td>\u4f4e\u97f3\u589e\u5f3a<\/td><td>\u63d0\u9ad8\u4f4e\u9891\u6548\u679c<\/td><\/tr><tr><td>Virtualizer<\/td><td>\u865a\u62df\u73af\u7ed5\u58f0<\/td><td>\u63d0\u9ad8\u7acb\u4f53\u58f0\u7a7a\u95f4\u611f<\/td><\/tr><tr><td>LoudnessEnhancer<\/td><td>\u54cd\u5ea6\u589e\u5f3a<\/td><td>\u589e\u52a0\u6574\u4f53\u54cd\u5ea6\u548c\u611f\u77e5\u6e05\u6670\u5ea6<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u5982\u4f60\u9700\u8981\u7ed3\u5408 Media3 \u4f7f\u7528 LoudnessEnhancer\uff0c\u4e5f\u53ef\u4ee5\u901a\u8fc7\u81ea\u5b9a\u4e49 AudioProcessor \u6216\u5728 ExoPlayer \u7684\u97f3\u9891\u4f1a\u8bdd ID \u83b7\u53d6\u540e\u518d\u521b\u5efa\u589e\u5f3a\u5668\u3002\u5982\u679c\u4f60\u6b63\u5728\u5f00\u53d1\u97f3\u9891\u64ad\u653e\u5668\uff08\u5982\u4f60\u7684\u5149\u9525\u97f3\u4e50\u9879\u76ee\uff09\uff0cLoudnessEnhancer \u662f\u4e00\u4e2a\u8f7b\u91cf\u4f46\u6709\u6548\u7684\u589e\u5f3a\u542c\u611f\u7684\u5de5\u5177\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>android.media.audiofx.LoudnessEnhancer \u662f Android \u63d0\u4f9b\u7684\u97f3\u9891\u540e\u5904\u7406\u6548\u679c\u7c7b\u4e4b\u4e00\uff0c\u7528\u4e8e\u589e\u5f3a\u97f3\u9891\u7684\u54cd\u5ea6\uff08Loudness\uff09\u3002\u5b83\u7ee7\u627f\u81ea android.media.audiofx.AudioEffect\uff0c\u53ef\u5728 API \u7ea7\u522b 19\uff08Android 4.4\uff09\u53ca\u4ee5\u4e0a\u4f7f\u7528\u3002 \u2705 \u4e00\u3001\u57fa\u672c\u7528\u9014 LoudnessEnhancer \u7684\u4f5c\u7528\u662f\u901a\u8fc7\u63d0\u5347\u97f3\u9891\u4fe1\u53f7\u7684\u589e\u76ca\u6765\u589e\u5f3a\u54cd\u5ea6\uff0c\u4f46\u5e76\u4e0d\u4e00\u5b9a\u7b49\u540c\u4e8e\u97f3\u91cf\u52a0\u5927\u3002\u5b83\u66f4\u50cf\u662f\u4e00\u79cd\u300c\u97f3\u9891\u538b\u7f29+\u653e\u5927\u300d\u7684\u6548\u679c\uff0c\u9002\u7528\u4e8e\u63d0\u5347\u4eba\u58f0\u6216\u80cc\u666f\u97f3\u9891\u7684\u611f\u77e5\u3002 \u2705 \u4e8c\u3001\u57fa\u672c\u7528\u6cd5 1. \u521b\u5efa\u5b9e\u4f8b \u4f60\u9700\u8981\u4e3a\u67d0\u4e2a\u64ad\u653e\u4f1a\u8bdd\u521b\u5efa LoudnessEnhancer \u5b9e\u4f8b\uff0c\u901a\u5e38\u4f7f\u7528\u97f3\u9891\u64ad\u653e\u7684 audioSessionId\u3002 2. \u8bbe\u7f6e\u589e\u76ca\uff08Gain\uff09 LoudnessEnhancer \u4f7f\u7528\u7684\u662f\u6beb\u8d1d\uff08mB, milliBels\uff09\uff0c1000 mB = 1 dB\u3002 \u901a\u5e38\u63a8\u8350\u7684\u589e\u76ca\u8303\u56f4\uff1a 3. \u542f\u7528\u6216\u7981\u7528 4. \u91ca\u653e\u8d44\u6e90 \u2705 \u4e09\u3001\u5b8c\u6574\u793a\u4f8b \u26a0\ufe0f \u56db\u3001\u6ce8\u610f\u4e8b\u9879 \u6ce8\u610f\u70b9 \u8bf4\u660e \u97f3\u9891\u4f1a\u8bdd ID LoudnessEnhancer \u53ea\u80fd\u4f5c\u7528\u4e8e\u6709\u97f3\u9891\u4f1a\u8bdd ID \u7684\u97f3\u9891\u8f68\u9053\uff0c\u5982 MediaPlayer\u3001AudioTrack \u7b49\u3002 \u64ad\u653e\u524d\u521b\u5efa\u66f4\u5b89\u5168 \u6700\u597d\u5728\u5f00\u59cb\u64ad\u653e\u524d\u5c31\u521d\u59cb\u5316\u5e76\u542f\u7528\uff0c\u4ee5\u786e\u4fdd\u4e0d\u4e22\u5931\u6548\u679c\u3002 \u8bbe\u5907\u517c\u5bb9\u6027 \u90e8\u5206\u4f4e\u7aef\u8bbe\u5907\u53ef\u80fd\u4e0d\u652f\u6301\u6b64 AudioEffect\uff0c\u5efa\u8bae\u52a0 try-catch\u3002 \u589e\u76ca\u4e0a\u9650 \u8bbe\u7f6e\u8fc7\u9ad8\u4f1a\u5bfc\u81f4\u7834\u97f3\u3001\u5931\u771f\u751a\u81f3\u5f15\u53d1\u8033\u673a\u635f\u574f\uff0c\u5efa\u8bae\u8bbe\u7f6e\u589e\u76ca\u4e0d\u8d85\u8fc7 5000 mB\u3002 \u4e0d\u5f71\u54cd\u7cfb\u7edf\u97f3\u91cf \u5b83\u589e\u5f3a\u7684\u662f\u64ad\u653e\u6d41\u7684\u54cd\u5ea6\uff0c\u4e0d\u4f1a\u6539\u53d8\u8bbe\u5907\u97f3\u91cf\u3002 \u4e0e\u5176\u4ed6 AudioEffect \u51b2\u7a81 \u540c\u65f6\u4f7f\u7528\u591a\u4e2a AudioEffect\uff08\u5982 Equalizer\u3001Virtualizer\uff09\u65f6\uff0c\u53ef\u80fd\u4f1a\u6709\u51b2\u7a81\uff0c\u53d6\u51b3\u4e8e\u8bbe\u5907\u5b9e\u73b0\u3002 \u2705 \u4e94\u3001\u5224\u65ad\u8bbe\u5907\u662f\u5426\u652f\u6301 \u2705 \u516d\u3001\u4e0e\u5176\u4ed6\u97f3\u9891\u5904\u7406\u7c7b\u5bf9\u6bd4 \u7c7b\u540d \u529f\u80fd \u4f7f\u7528\u573a\u666f Equalizer \u5747\u8861\u5668 \u8c03\u6574\u4e0d\u540c\u9891\u6bb5\u7684\u97f3\u91cf BassBoost \u4f4e\u97f3\u589e\u5f3a \u63d0\u9ad8\u4f4e\u9891\u6548\u679c Virtualizer \u865a\u62df\u73af\u7ed5\u58f0 \u63d0\u9ad8\u7acb\u4f53\u58f0\u7a7a\u95f4\u611f LoudnessEnhancer \u54cd\u5ea6\u589e\u5f3a \u589e\u52a0\u6574\u4f53\u54cd\u5ea6\u548c\u611f\u77e5\u6e05\u6670\u5ea6 \u5982\u4f60\u9700\u8981\u7ed3\u5408 Media3 \u4f7f\u7528 LoudnessEnhancer\uff0c\u4e5f\u53ef\u4ee5\u901a\u8fc7\u81ea\u5b9a\u4e49 AudioProcessor \u6216\u5728 ExoPlayer \u7684\u97f3\u9891\u4f1a\u8bdd ID \u83b7\u53d6\u540e\u518d\u521b\u5efa\u589e\u5f3a\u5668\u3002\u5982\u679c\u4f60\u6b63\u5728\u5f00\u53d1\u97f3\u9891\u64ad\u653e\u5668\uff08\u5982\u4f60\u7684\u5149\u9525\u97f3\u4e50\u9879\u76ee\uff09\uff0cLoudnessEnhancer \u662f\u4e00\u4e2a\u8f7b\u91cf\u4f46\u6709\u6548\u7684\u589e\u5f3a\u542c\u611f\u7684\u5de5\u5177\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[58],"class_list":["post-491","post","type-post","status-publish","format-standard","hentry","category-appdev","tag-android"],"_links":{"self":[{"href":"https:\/\/trantor.ink\/index.php?rest_route=\/wp\/v2\/posts\/491","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/trantor.ink\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/trantor.ink\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/trantor.ink\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/trantor.ink\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=491"}],"version-history":[{"count":1,"href":"https:\/\/trantor.ink\/index.php?rest_route=\/wp\/v2\/posts\/491\/revisions"}],"predecessor-version":[{"id":492,"href":"https:\/\/trantor.ink\/index.php?rest_route=\/wp\/v2\/posts\/491\/revisions\/492"}],"wp:attachment":[{"href":"https:\/\/trantor.ink\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=491"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/trantor.ink\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=491"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/trantor.ink\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=491"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}