{"id":537,"date":"2025-08-25T16:10:54","date_gmt":"2025-08-25T08:10:54","guid":{"rendered":"https:\/\/trantor.ink\/?p=537"},"modified":"2025-08-25T16:10:55","modified_gmt":"2025-08-25T08:10:55","slug":"android-usb-%e7%8b%ac%e5%8d%a0%e6%a8%a1%e5%bc%8f%e7%ae%80%e4%bb%8b","status":"publish","type":"post","link":"https:\/\/trantor.ink\/?p=537","title":{"rendered":"Android USB \u72ec\u5360\u6a21\u5f0f\u7b80\u4ecb"},"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-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/trantor.ink\/?p=537\/#1_%E4%BB%80%E4%B9%88%E6%98%AF_USB_%E7%8B%AC%E5%8D%A0%E6%A8%A1%E5%BC%8F_USB_Exclusive_Mode%EF%BC%9F\" >1. \u4ec0\u4e48\u662f USB \u72ec\u5360\u6a21\u5f0f (USB Exclusive Mode)\uff1f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/trantor.ink\/?p=537\/#2_%E4%B8%BA%E4%BB%80%E4%B9%88%E9%9C%80%E8%A6%81_USB_%E7%8B%AC%E5%8D%A0%E6%A8%A1%E5%BC%8F%EF%BC%9F\" >2. \u4e3a\u4ec0\u4e48\u9700\u8981 USB \u72ec\u5360\u6a21\u5f0f\uff1f<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/trantor.ink\/?p=537\/#%E6%A0%87%E5%87%86_Android_%E9%9F%B3%E9%A2%91%E8%B7%AF%E5%BE%84%EF%BC%9A\" >\u6807\u51c6 Android \u97f3\u9891\u8def\u5f84\uff1a<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/trantor.ink\/?p=537\/#USB_%E7%8B%AC%E5%8D%A0%E6%A8%A1%E5%BC%8F%E7%9A%84%E8%A7%A3%E5%86%B3%E6%96%B9%E6%A1%88%EF%BC%9A\" >USB \u72ec\u5360\u6a21\u5f0f\u7684\u89e3\u51b3\u65b9\u6848\uff1a<\/a><\/li><\/ul><\/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=537\/#3_USB_%E7%8B%AC%E5%8D%A0%E6%A8%A1%E5%BC%8F%E7%9A%84%E4%BC%98%E7%BC%BA%E7%82%B9\" >3. USB \u72ec\u5360\u6a21\u5f0f\u7684\u4f18\u7f3a\u70b9<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/trantor.ink\/?p=537\/#%E4%BC%98%E7%82%B9%EF%BC%9A\" >\u4f18\u70b9\uff1a<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/trantor.ink\/?p=537\/#%E7%BC%BA%E7%82%B9%EF%BC%9A\" >\u7f3a\u70b9\uff1a<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/trantor.ink\/?p=537\/#4_%E5%A6%82%E4%BD%95%E4%BD%BF%E7%94%A8_USB_%E7%8B%AC%E5%8D%A0%E5%8A%9F%E8%83%BD%EF%BC%9F\" >4. \u5982\u4f55\u4f7f\u7528 USB \u72ec\u5360\u529f\u80fd\uff1f<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/trantor.ink\/?p=537\/#%E6%AD%A5%E9%AA%A4%E6%A6%82%E8%A7%88%EF%BC%9A\" >\u6b65\u9aa4\u6982\u89c8\uff1a<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/trantor.ink\/?p=537\/#%E6%80%BB%E7%BB%93\" >\u603b\u7ed3<\/a><\/li><\/ul><\/nav><\/div>\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_%E4%BB%80%E4%B9%88%E6%98%AF_USB_%E7%8B%AC%E5%8D%A0%E6%A8%A1%E5%BC%8F_USB_Exclusive_Mode%EF%BC%9F\"><\/span>1. \u4ec0\u4e48\u662f USB \u72ec\u5360\u6a21\u5f0f (USB Exclusive Mode)\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u7b80\u5355\u6765\u8bf4\uff0c<strong>USB \u72ec\u5360\u6a21\u5f0f<\/strong> \u5141\u8bb8\u4e00\u4e2a\u97f3\u4e50\u64ad\u653e\u5668 App <strong>\u7ed5\u8fc7 Android \u7cfb\u7edf\u7684\u97f3\u9891\u6df7\u97f3\u5668<\/strong>\uff0c\u76f4\u63a5\u5c06\u539f\u59cb\u7684\u3001\u672a\u7ecf\u5904\u7406\u7684\u97f3\u9891\u6570\u636e\u53d1\u9001\u5230\u901a\u8fc7 USB \u8fde\u63a5\u7684\u5916\u90e8\u97f3\u9891\u8bbe\u5907\uff08\u901a\u5e38\u662f\u89e3\u7801\u5668\/\u8033\u653e\uff0c\u5373 DAC\uff09\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u5c31\u597d\u6bd4\u4e3a\u4f60\u7684\u97f3\u4e50 App \u4fee\u5efa\u4e86\u4e00\u6761\u4ece App \u76f4\u8fbe\u5916\u90e8 DAC \u7684\u201c\u79c1\u5bb6\u9ad8\u901f\u516c\u8def\u201d\uff0c\u7ed5\u5f00\u4e86\u7cfb\u7edf\u91cc\u7e41\u5fd9\u4e14\u4f1a\u6539\u53d8\u97f3\u8d28\u7684\u201c\u5e02\u653f\u9053\u8def\u201d\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_%E4%B8%BA%E4%BB%80%E4%B9%88%E9%9C%80%E8%A6%81_USB_%E7%8B%AC%E5%8D%A0%E6%A8%A1%E5%BC%8F%EF%BC%9F\"><\/span>2. \u4e3a\u4ec0\u4e48\u9700\u8981 USB \u72ec\u5360\u6a21\u5f0f\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u8981\u7406\u89e3\u5b83\u7684\u91cd\u8981\u6027\uff0c\u6211\u4eec\u9996\u5148\u8981\u4e86\u89e3\u6807\u51c6 Android \u97f3\u9891\u5904\u7406\u6d41\u7a0b\u7684\u201c\u95ee\u9898\u201d\u6240\u5728\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%A0%87%E5%87%86_Android_%E9%9F%B3%E9%A2%91%E8%B7%AF%E5%BE%84%EF%BC%9A\"><\/span>\u6807\u51c6 Android \u97f3\u9891\u8def\u5f84\uff1a<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cAndroid \u7cfb\u7edf\u4e2d\u6240\u6709 App \u7684\u58f0\u97f3\uff08\u97f3\u4e50\u3001\u6e38\u620f\u3001\u901a\u77e5\u3001\u94c3\u58f0\uff09\u90fd\u4f1a\u7ecf\u8fc7\u4e00\u4e2a\u53eb\u505a <strong><code>AudioFlinger<\/code><\/strong> \u7684\u7cfb\u7edf\u7ea7\u6df7\u97f3\u5668\uff08Mixer\uff09\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u4e2a\u6df7\u97f3\u5668\u7684\u4e3b\u8981\u5de5\u4f5c\u662f\uff1a<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>\u6df7\u5408\u97f3\u9891\uff1a<\/strong> \u5c06\u6765\u81ea\u4e0d\u540c App \u7684\u58f0\u97f3\u6df7\u5408\u5728\u4e00\u8d77\uff0c\u8fd9\u6837\u4f60\u624d\u80fd\u5728\u542c\u97f3\u4e50\u7684\u65f6\u5019\u542c\u5230\u5fae\u4fe1\u901a\u77e5\u97f3\u3002<\/li>\n\n\n\n<li><strong>\u91cd\u65b0\u91c7\u6837 (Resampling)\uff1a<\/strong> \u4e3a\u4e86\u80fd\u5c06\u4e0d\u540c\u91c7\u6837\u7387\u7684\u97f3\u9891\uff08\u4f8b\u5982 44.1kHz \u7684\u97f3\u4e50\u548c 48kHz \u7684\u7cfb\u7edf\u97f3\uff09\u6df7\u5408\u5728\u4e00\u8d77\uff0c\u6df7\u97f3\u5668\u4f1a\u5c06\u6240\u6709\u97f3\u9891\u7edf\u4e00\u8f6c\u6362\u6210\u4e00\u4e2a\u7cfb\u7edf\u9ed8\u8ba4\u7684\u91c7\u6837\u7387\uff08\u901a\u5e38\u662f 48kHz \u6216\u66f4\u9ad8\uff09\u3002<\/li>\n\n\n\n<li><strong>\u5e94\u7528\u97f3\u6548\uff1a<\/strong> \u7cfb\u7edf\u6216\u624b\u673a\u5382\u5546\u53ef\u80fd\u4f1a\u5185\u7f6e\u4e00\u4e9b\u97f3\u6548\uff08\u5982\u675c\u6bd4\u97f3\u6548\u3001\u5747\u8861\u5668\u7b49\uff09\uff0c\u8fd9\u4e9b\u4e5f\u4f1a\u5728\u6df7\u97f3\u5668\u5c42\u9762\u88ab\u5e94\u7528\u3002<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u4e2a\u8fc7\u7a0b\u5bf9\u4e8e\u65e5\u5e38\u4f7f\u7528\u662f\u5fc5\u8981\u7684\uff0c\u4f46\u5bf9\u4e8e\u8ffd\u6c42\u9ad8\u4fdd\u771f\uff08Hi-Fi\uff09\u97f3\u8d28\u7684\u7528\u6237\u6765\u8bf4\uff0c\u5374\u662f<strong>\u97f3\u8d28\u7684\u201c\u6740\u624b\u201d<\/strong>\u3002\u56e0\u4e3a\u201c\u91cd\u65b0\u91c7\u6837\u201d\u548c\u201c\u6df7\u5408\u201d\u8fd9\u4e24\u4e2a\u6b65\u9aa4\u4f1a\u4e0d\u53ef\u907f\u514d\u5730\u5bf9\u539f\u59cb\u97f3\u9891\u6570\u636e\u8fdb\u884c\u4fee\u6539\uff0c\u5bfc\u81f4\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6570\u636e\u635f\u5931\uff1a<\/strong> \u539f\u59cb\u7684\u97f3\u9891\u4fe1\u53f7\u88ab\u6539\u53d8\uff0c\u4e0d\u518d\u662f\u201c\u539f\u6c41\u539f\u5473\u201d\u7684\u4e86\u3002<\/li>\n\n\n\n<li><strong>\u65e0\u6cd5\u5b9e\u73b0 Bit-Perfect\uff1a<\/strong> Bit-Perfect \u6307\u7684\u662f\u6570\u5b57\u97f3\u9891\u4fe1\u53f7\u4ece\u6e90\u6587\u4ef6\u5230 DAC \u89e3\u7801\u7684\u6574\u4e2a\u8fc7\u7a0b\u4e2d\uff0c\u6bcf\u4e00\u4e2a\u6bd4\u7279\uff08bit\uff09\u90fd\u4fdd\u6301\u539f\u6837\uff0c\u6ca1\u6709\u4efb\u4f55\u6539\u53d8\u3002\u7ecf\u8fc7 Android \u6df7\u97f3\u5668\u540e\uff0cBit-Perfect \u5c31\u88ab\u7834\u574f\u4e86\u3002<\/li>\n\n\n\n<li><strong>\u65e0\u6cd5\u652f\u6301\u9ad8\u89c4\u683c\u97f3\u9891\uff1a<\/strong> \u5f88\u591a\u9ad8\u89e3\u6790\u5ea6\u97f3\u9891\uff08Hi-Res Audio\uff09\uff0c\u6bd4\u5982 DSD \u683c\u5f0f\u6216\u8005 192kHz\/24bit \u7684 PCM\uff0cAndroid \u7684\u6df7\u97f3\u5668\u53ef\u80fd\u65e0\u6cd5\u539f\u751f\u5904\u7406\uff0c\u4f1a\u5f3a\u5236\u964d\u7ea7\uff08Downsampling\uff09\u5230\u8f83\u4f4e\u7684\u89c4\u683c\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"USB_%E7%8B%AC%E5%8D%A0%E6%A8%A1%E5%BC%8F%E7%9A%84%E8%A7%A3%E5%86%B3%E6%96%B9%E6%A1%88%EF%BC%9A\"><\/span>USB \u72ec\u5360\u6a21\u5f0f\u7684\u89e3\u51b3\u65b9\u6848\uff1a<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">USB \u72ec\u5360\u6a21\u5f0f\u5c31\u662f\u4e3a\u4e86\u89e3\u51b3\u4ee5\u4e0a\u6240\u6709\u95ee\u9898\u800c\u751f\u7684\u3002\u5b83\u901a\u8fc7\u4ee5\u4e0b\u65b9\u5f0f\u5de5\u4f5c\uff1a<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>\u7ed5\u8fc7\u6df7\u97f3\u5668\uff1a<\/strong> App \u76f4\u63a5\u83b7\u5f97\u5bf9 USB \u97f3\u9891\u8bbe\u5907\u7684\u63a7\u5236\u6743\u3002<\/li>\n\n\n\n<li><strong>\u76f4\u63a5\u901a\u4fe1\uff1a<\/strong> App \u901a\u8fc7 Android \u7684 USB Host API \u76f4\u63a5\u4e0e\u5916\u90e8 DAC \u5bf9\u8bdd\u3002<\/li>\n\n\n\n<li><strong>\u539f\u59cb\u6570\u636e\u4f20\u8f93\uff1a<\/strong> App \u5c06\u97f3\u4e50\u6587\u4ef6\u89e3\u7801\u540e\u5f97\u5230\u7684\u539f\u59cb PCM \u6216 DSD \u6570\u636e\u6d41\uff0c\u4e0d\u7ecf\u4efb\u4f55\u4fee\u6539\uff0c\u76f4\u63a5\u53d1\u9001\u7ed9 DAC\u3002<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u6837\u4e00\u6765\uff0c\u5c31\u5b9e\u73b0\u4e86\u771f\u6b63\u7684 <strong>Bit-Perfect<\/strong> \u64ad\u653e\uff0c\u786e\u4fdd\u4f60\u542c\u5230\u7684\u58f0\u97f3\u5c31\u662f\u97f3\u4e50\u6587\u4ef6\u672c\u8eab\u8bb0\u5f55\u7684\u6837\u5b50\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_USB_%E7%8B%AC%E5%8D%A0%E6%A8%A1%E5%BC%8F%E7%9A%84%E4%BC%98%E7%BC%BA%E7%82%B9\"><\/span>3. USB \u72ec\u5360\u6a21\u5f0f\u7684\u4f18\u7f3a\u70b9<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E4%BC%98%E7%82%B9%EF%BC%9A\"><\/span>\u4f18\u70b9\uff1a<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6781\u81f4\u97f3\u8d28\uff1a<\/strong> \u83b7\u5f97 Bit-Perfect \u7684\u8f93\u51fa\uff0c\u7406\u8bba\u4e0a\u80fd\u8fbe\u5230\u6700\u597d\u7684\u97f3\u8d28\uff0c\u5145\u5206\u53d1\u6325\u5916\u7f6e DAC \u7684\u6027\u80fd\u3002<\/li>\n\n\n\n<li><strong>\u652f\u6301\u9ad8\u89e3\u6790\u5ea6\u97f3\u9891\uff1a<\/strong> \u53ef\u4ee5\u539f\u751f\u8f93\u51fa DSD\u3001MQA \u4ee5\u53ca\u5404\u79cd\u9ad8\u91c7\u6837\u7387\u7684 PCM \u97f3\u9891\uff0c\u800c\u4e0d\u4f1a\u88ab\u7cfb\u7edf\u964d\u7ea7\u3002<\/li>\n\n\n\n<li><strong>\u907f\u514d\u7cfb\u7edf\u5e72\u6270\uff1a<\/strong> \u7ed5\u8fc7\u7cfb\u7edf\u5185\u7f6e\u7684\u6240\u6709\u97f3\u6548\u548c\u97f3\u91cf\u63a7\u5236\uff0c\u83b7\u5f97\u6700\u7eaf\u51c0\u7684\u4fe1\u53f7\u3002\u97f3\u91cf\u8c03\u8282\u901a\u5e38\u7531\u5916\u90e8 DAC \u6216 App \u5185\u7684\u6570\u5b57\u97f3\u91cf\u63a7\u5236\u6765\u5b8c\u6210\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E7%BC%BA%E7%82%B9%EF%BC%9A\"><\/span>\u7f3a\u70b9\uff1a<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u201c\u72ec\u5360\u201d\u610f\u5473\u7740\u6392\u4ed6\uff1a<\/strong> \u5f53\u4e00\u4e2a App \u5904\u4e8e USB \u72ec\u5360\u6a21\u5f0f\u65f6\uff0c\u5176\u4ed6\u4efb\u4f55 App \u548c\u7cfb\u7edf\u7684\u58f0\u97f3\uff08\u5982\u7535\u8bdd\u94c3\u58f0\u3001\u901a\u77e5\u3001\u95f9\u949f\uff09\u90fd\u65e0\u6cd5\u901a\u8fc7\u8fd9\u4e2a USB DAC \u64ad\u653e\u3002\u5b83\u4eec\u8981\u4e48\u88ab\u9759\u97f3\uff0c\u8981\u4e48\u4f1a\u4ece\u624b\u673a\u7684\u626c\u58f0\u5668\u64ad\u653e\u3002<\/li>\n\n\n\n<li><strong>\u9700\u8981 App \u652f\u6301\uff1a<\/strong> \u8fd9\u4e0d\u662f\u4e00\u4e2a\u7cfb\u7edf\u7ea7\u7684\u529f\u80fd\u5f00\u5173\uff0c\u800c\u662f\u9700\u8981\u97f3\u4e50\u64ad\u653e\u5668 App \u672c\u8eab\u53bb\u5f00\u53d1\u548c\u5b9e\u73b0\u3002\u4e0d\u662f\u6240\u6709\u64ad\u653e\u5668\u90fd\u652f\u6301\u3002<\/li>\n\n\n\n<li><strong>\u9700\u8981\u786c\u4ef6\u652f\u6301\uff1a<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u4f60\u7684 Android \u8bbe\u5907\u5fc5\u987b\u652f\u6301 USB OTG (On-The-Go) \u529f\u80fd\u3002<\/li>\n\n\n\n<li>\u4f60\u9700\u8981\u4e00\u4e2a\u5916\u7f6e\u7684 USB DAC\u3002<\/li>\n\n\n\n<li>\u4f60\u9700\u8981\u4e00\u6839 OTG \u6570\u636e\u7ebf\u6765\u8fde\u63a5\u624b\u673a\u548c DAC\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_%E5%A6%82%E4%BD%95%E4%BD%BF%E7%94%A8_USB_%E7%8B%AC%E5%8D%A0%E5%8A%9F%E8%83%BD%EF%BC%9F\"><\/span>4. \u5982\u4f55\u4f7f\u7528 USB \u72ec\u5360\u529f\u80fd\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%AD%A5%E9%AA%A4%E6%A6%82%E8%A7%88%EF%BC%9A\"><\/span>\u6b65\u9aa4\u6982\u89c8\uff1a<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>\u51c6\u5907\u786c\u4ef6\uff1a<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u4e00\u53f0\u652f\u6301 OTG \u7684 Android \u624b\u673a\/\u5e73\u677f\u3002<\/li>\n\n\n\n<li>\u4e00\u53f0\u5916\u7f6e USB DAC\u3002<\/li>\n\n\n\n<li>\u4e00\u6839\u5408\u9002\u7684 OTG \u7ebf\u6216\u8f6c\u63a5\u5934\uff08\u4f8b\u5982 USB-C to USB-B\uff09\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u5b89\u88c5\u652f\u6301\u7684 App\uff1a\u4e0b\u8f7d\u5e76\u5b89\u88c5\u652f\u6301 USB \u72ec\u5360\u6a21\u5f0f\u7684\u97f3\u4e50\u64ad\u653e\u5668\u3002\u77e5\u540d\u7684\u6709\uff1a\n<ul class=\"wp-block-list\">\n<li>USB Audio Player PRO (UAPP) &#8211; \u8fd9\u662f\u4e00\u4e2a\u975e\u5e38\u4e13\u4e1a\u7684\u4ed8\u8d39 App\uff0c\u53ef\u4ee5\u8bf4\u662f\u8fd9\u4e2a\u9886\u57df\u7684\u6807\u6746\u3002<\/li>\n\n\n\n<li>\u6d77\u8d1d\u97f3\u4e50 (HiBy Music) &#8211; \u529f\u80fd\u5f3a\u5927\uff0c\u5bf9\u5f88\u591a\u56fd\u4ea7\u8bbe\u5907\u652f\u6301\u826f\u597d\u3002<\/li>\n\n\n\n<li>\u4e2d\u5b50\u64ad\u653e\u5668 (Neutron Music Player) &#8211; \u4ee5\u97f3\u8d28\u548c\u9ad8\u5ea6\u53ef\u5b9a\u5236\u6027\u8457\u79f0\u3002<\/li>\n\n\n\n<li>Poweramp (\u65b0\u7248\u672c\u4e5f\u652f\u6301)\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u8fde\u63a5\u8bbe\u5907\u5e76\u6388\u6743\uff1a<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u7528 OTG \u7ebf\u5c06\u4f60\u7684 DAC \u8fde\u63a5\u5230\u624b\u673a\u3002<\/li>\n\n\n\n<li>\u6253\u5f00\u4f60\u5b89\u88c5\u597d\u7684\u97f3\u4e50\u64ad\u653e\u5668 App\u3002<\/li>\n\n\n\n<li>\u6b64\u65f6\uff0cAndroid \u7cfb\u7edf\u4f1a\u5f39\u51fa\u4e00\u4e2a\u5bf9\u8bdd\u6846\uff0c\u8be2\u95ee <strong>\u201c\u662f\u5426\u5141\u8bb8 [App\u540d\u79f0] \u8bbf\u95ee\u8be5 USB \u8bbe\u5907\uff1f\u201d<\/strong><\/li>\n\n\n\n<li><strong>\u52a1\u5fc5\u70b9\u51fb\u201c\u786e\u5b9a\u201d\u6216\u201c\u5141\u8bb8\u201d<\/strong>\u3002\u8fd9\u4e00\u6b65\u662f\u5f00\u542f\u72ec\u5360\u6a21\u5f0f\u7684\u5173\u952e\u6388\u6743\u3002\u5982\u679c\u4f60\u70b9\u4e86\u53d6\u6d88\uff0cApp \u5c06\u65e0\u6cd5\u63a7\u5236\u8be5\u8bbe\u5907\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u5728 App \u4e2d\u8fdb\u884c\u8bbe\u7f6e\uff1a<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u8fdb\u5165 App \u7684\u97f3\u9891\u8bbe\u7f6e\u83dc\u5355\u3002<\/li>\n\n\n\n<li>\u901a\u5e38\u4f1a\u6709\u4e00\u4e2a\u201cUSB \u8f93\u51fa\u201d\u6216\u201c\u76f4\u63a5\u8bbf\u95ee USB\u201d\u4e4b\u7c7b\u7684\u9009\u9879\u3002<\/li>\n\n\n\n<li>\u5728\u91cc\u9762\u9009\u62e9\u4f60\u8fde\u63a5\u7684 DAC \u8bbe\u5907\uff0c\u5e76\u786e\u4fdd\u72ec\u5360\u6a21\u5f0f\uff08\u53ef\u80fd\u88ab\u79f0\u4e3a Direct\/Bit-Perfect\/\u72ec\u5360\u6a21\u5f0f\uff09\u5df2\u7ecf\u5f00\u542f\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u8bbe\u7f6e\u5b8c\u6210\u540e\uff0c\u64ad\u653e\u97f3\u4e50\u65f6\uff0c\u97f3\u9891\u6d41\u5c31\u4f1a\u7ed5\u8fc7 Android \u7cfb\u7edf\uff0c\u76f4\u63a5\u8f93\u51fa\u5230\u4f60\u7684 DAC \u4e86\u3002\u5f88\u591a App \u5728\u64ad\u653e\u65f6\u4f1a\u663e\u793a\u5f53\u524d\u8f93\u51fa\u7684\u97f3\u9891\u683c\u5f0f\u548c\u91c7\u6837\u7387\uff0c\u4f60\u53ef\u4ee5\u901a\u8fc7\u8fd9\u4e2a\u4fe1\u606f\u6765\u786e\u8ba4\u72ec\u5360\u6a21\u5f0f\u662f\u5426\u5de5\u4f5c\u6b63\u5e38\uff08\u4f8b\u5982\uff0c\u64ad\u653e\u4e00\u4e2a 96kHz \u7684\u6587\u4ef6\uff0cApp \u754c\u9762\u548c DAC \u663e\u793a\u7684\u90fd\u662f 96kHz\uff0c\u800c\u4e0d\u662f\u7cfb\u7edf\u7edf\u4e00\u7684 48kHz\uff09\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%80%BB%E7%BB%93\"><\/span>\u603b\u7ed3<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><td>\u7279\u6027<\/td><td>\u6807\u51c6 Android \u97f3\u9891<\/td><td>USB \u72ec\u5360\u6a21\u5f0f<\/td><\/tr><\/thead><tbody><tr><td><strong>\u97f3\u9891\u8def\u5f84<\/strong><\/td><td>App -&gt; Android \u6df7\u97f3\u5668 -&gt; \u8f93\u51fa<\/td><td>App -&gt; USB DAC (\u76f4\u63a5)<\/td><\/tr><tr><td><strong>\u97f3\u8d28<\/strong><\/td><td>\u6709\u635f\uff08\u7ecf\u8fc7\u91cd\u91c7\u6837\u3001\u6df7\u5408\uff09<\/td><td>\u65e0\u635f (Bit-Perfect)<\/td><\/tr><tr><td><strong>Hi-Res \u652f\u6301<\/strong><\/td><td>\u6709\u9650\uff0c\u53ef\u80fd\u88ab\u964d\u7ea7<\/td><td>\u5b8c\u7f8e\u652f\u6301\u539f\u751f\u683c\u5f0f (DSD, \u9ad8\u7801\u7387 PCM)<\/td><\/tr><tr><td><strong>\u7cfb\u7edf\u58f0\u97f3<\/strong><\/td><td>\u6b63\u5e38\u6df7\u5408\u64ad\u653e<\/td><td>\u88ab\u5c4f\u853d\u6216\u4ece\u624b\u673a\u626c\u58f0\u5668\u64ad\u653e<\/td><\/tr><tr><td><strong>\u9002\u7528\u573a\u666f<\/strong><\/td><td>\u65e5\u5e38\u901a\u7528<\/td><td>\u4e25\u8083\u7684\u3001\u9ad8\u54c1\u8d28\u7684\u97f3\u4e50\u6b23\u8d4f<\/td><\/tr><tr><td><strong>\u9700\u8981\u6761\u4ef6<\/strong><\/td><td>\u65e0<\/td><td>\u652f\u6301\u7684 App + \u5916\u7f6e DAC + OTG \u7ebf<\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>1. \u4ec0\u4e48\u662f USB \u72ec\u5360\u6a21\u5f0f (USB Exclusive Mode)\uff1f \u7b80\u5355\u6765\u8bf4\uff0cUSB \u72ec\u5360\u6a21\u5f0f \u5141\u8bb8\u4e00\u4e2a\u97f3\u4e50\u64ad\u653e\u5668 App \u7ed5\u8fc7 Android \u7cfb\u7edf\u7684\u97f3\u9891\u6df7\u97f3\u5668\uff0c\u76f4\u63a5\u5c06\u539f\u59cb\u7684\u3001\u672a\u7ecf\u5904\u7406\u7684\u97f3\u9891\u6570\u636e\u53d1\u9001\u5230\u901a\u8fc7 USB \u8fde\u63a5\u7684\u5916\u90e8\u97f3\u9891\u8bbe\u5907\uff08\u901a\u5e38\u662f\u89e3\u7801\u5668\/\u8033\u653e\uff0c\u5373 DAC\uff09\u3002 \u8fd9\u5c31\u597d\u6bd4\u4e3a\u4f60\u7684\u97f3\u4e50 App \u4fee\u5efa\u4e86\u4e00\u6761\u4ece App \u76f4\u8fbe\u5916\u90e8 DAC \u7684\u201c\u79c1\u5bb6\u9ad8\u901f\u516c\u8def\u201d\uff0c\u7ed5\u5f00\u4e86\u7cfb\u7edf\u91cc\u7e41\u5fd9\u4e14\u4f1a\u6539\u53d8\u97f3\u8d28\u7684\u201c\u5e02\u653f\u9053\u8def\u201d\u3002 2. \u4e3a\u4ec0\u4e48\u9700\u8981 USB \u72ec\u5360\u6a21\u5f0f\uff1f \u8981\u7406\u89e3\u5b83\u7684\u91cd\u8981\u6027\uff0c\u6211\u4eec\u9996\u5148\u8981\u4e86\u89e3\u6807\u51c6 Android \u97f3\u9891\u5904\u7406\u6d41\u7a0b\u7684\u201c\u95ee\u9898\u201d\u6240\u5728\u3002 \u6807\u51c6 Android \u97f3\u9891\u8def\u5f84\uff1a \u5728\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cAndroid \u7cfb\u7edf\u4e2d\u6240\u6709 App \u7684\u58f0\u97f3\uff08\u97f3\u4e50\u3001\u6e38\u620f\u3001\u901a\u77e5\u3001\u94c3\u58f0\uff09\u90fd\u4f1a\u7ecf\u8fc7\u4e00\u4e2a\u53eb\u505a AudioFlinger \u7684\u7cfb\u7edf\u7ea7\u6df7\u97f3\u5668\uff08Mixer\uff09\u3002 \u8fd9\u4e2a\u6df7\u97f3\u5668\u7684\u4e3b\u8981\u5de5\u4f5c\u662f\uff1a \u8fd9\u4e2a\u8fc7\u7a0b\u5bf9\u4e8e\u65e5\u5e38\u4f7f\u7528\u662f\u5fc5\u8981\u7684\uff0c\u4f46\u5bf9\u4e8e\u8ffd\u6c42\u9ad8\u4fdd\u771f\uff08Hi-Fi\uff09\u97f3\u8d28\u7684\u7528\u6237\u6765\u8bf4\uff0c\u5374\u662f\u97f3\u8d28\u7684\u201c\u6740\u624b\u201d\u3002\u56e0\u4e3a\u201c\u91cd\u65b0\u91c7\u6837\u201d\u548c\u201c\u6df7\u5408\u201d\u8fd9\u4e24\u4e2a\u6b65\u9aa4\u4f1a\u4e0d\u53ef\u907f\u514d\u5730\u5bf9\u539f\u59cb\u97f3\u9891\u6570\u636e\u8fdb\u884c\u4fee\u6539\uff0c\u5bfc\u81f4\uff1a USB \u72ec\u5360\u6a21\u5f0f\u7684\u89e3\u51b3\u65b9\u6848\uff1a USB \u72ec\u5360\u6a21\u5f0f\u5c31\u662f\u4e3a\u4e86\u89e3\u51b3\u4ee5\u4e0a\u6240\u6709\u95ee\u9898\u800c\u751f\u7684\u3002\u5b83\u901a\u8fc7\u4ee5\u4e0b\u65b9\u5f0f\u5de5\u4f5c\uff1a \u8fd9\u6837\u4e00\u6765\uff0c\u5c31\u5b9e\u73b0\u4e86\u771f\u6b63\u7684 Bit-Perfect \u64ad\u653e\uff0c\u786e\u4fdd\u4f60\u542c\u5230\u7684\u58f0\u97f3\u5c31\u662f\u97f3\u4e50\u6587\u4ef6\u672c\u8eab\u8bb0\u5f55\u7684\u6837\u5b50\u3002 3. USB \u72ec\u5360\u6a21\u5f0f\u7684\u4f18\u7f3a\u70b9 \u4f18\u70b9\uff1a \u7f3a\u70b9\uff1a 4. \u5982\u4f55\u4f7f\u7528 USB \u72ec\u5360\u529f\u80fd\uff1f \u6b65\u9aa4\u6982\u89c8\uff1a \u8bbe\u7f6e\u5b8c\u6210\u540e\uff0c\u64ad\u653e\u97f3\u4e50\u65f6\uff0c\u97f3\u9891\u6d41\u5c31\u4f1a\u7ed5\u8fc7 Android \u7cfb\u7edf\uff0c\u76f4\u63a5\u8f93\u51fa\u5230\u4f60\u7684 DAC \u4e86\u3002\u5f88\u591a App \u5728\u64ad\u653e\u65f6\u4f1a\u663e\u793a\u5f53\u524d\u8f93\u51fa\u7684\u97f3\u9891\u683c\u5f0f\u548c\u91c7\u6837\u7387\uff0c\u4f60\u53ef\u4ee5\u901a\u8fc7\u8fd9\u4e2a\u4fe1\u606f\u6765\u786e\u8ba4\u72ec\u5360\u6a21\u5f0f\u662f\u5426\u5de5\u4f5c\u6b63\u5e38\uff08\u4f8b\u5982\uff0c\u64ad\u653e\u4e00\u4e2a 96kHz \u7684\u6587\u4ef6\uff0cApp \u754c\u9762\u548c DAC \u663e\u793a\u7684\u90fd\u662f 96kHz\uff0c\u800c\u4e0d\u662f\u7cfb\u7edf\u7edf\u4e00\u7684 48kHz\uff09\u3002 \u603b\u7ed3 \u7279\u6027 \u6807\u51c6 Android \u97f3\u9891 USB \u72ec\u5360\u6a21\u5f0f \u97f3\u9891\u8def\u5f84 App -&gt; Android \u6df7\u97f3\u5668 -&gt; \u8f93\u51fa App -&gt; USB DAC (\u76f4\u63a5) \u97f3\u8d28 \u6709\u635f\uff08\u7ecf\u8fc7\u91cd\u91c7\u6837\u3001\u6df7\u5408\uff09 \u65e0\u635f (Bit-Perfect) Hi-Res \u652f\u6301 \u6709\u9650\uff0c\u53ef\u80fd\u88ab\u964d\u7ea7 \u5b8c\u7f8e\u652f\u6301\u539f\u751f\u683c\u5f0f (DSD, \u9ad8\u7801\u7387 PCM) \u7cfb\u7edf\u58f0\u97f3 \u6b63\u5e38\u6df7\u5408\u64ad\u653e \u88ab\u5c4f\u853d\u6216\u4ece\u624b\u673a\u626c\u58f0\u5668\u64ad\u653e \u9002\u7528\u573a\u666f \u65e5\u5e38\u901a\u7528 \u4e25\u8083\u7684\u3001\u9ad8\u54c1\u8d28\u7684\u97f3\u4e50\u6b23\u8d4f \u9700\u8981\u6761\u4ef6 \u65e0 \u652f\u6301\u7684 App + \u5916\u7f6e DAC + OTG \u7ebf<\/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-537","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\/537","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=537"}],"version-history":[{"count":1,"href":"https:\/\/trantor.ink\/index.php?rest_route=\/wp\/v2\/posts\/537\/revisions"}],"predecessor-version":[{"id":538,"href":"https:\/\/trantor.ink\/index.php?rest_route=\/wp\/v2\/posts\/537\/revisions\/538"}],"wp:attachment":[{"href":"https:\/\/trantor.ink\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=537"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/trantor.ink\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=537"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/trantor.ink\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=537"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}