{"id":157972,"date":"2024-05-08T12:41:16","date_gmt":"2024-05-08T04:41:16","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/157972.html"},"modified":"2024-05-08T12:41:18","modified_gmt":"2024-05-08T04:41:18","slug":"%e5%a6%82%e4%bd%95%e7%94%a8javascript%e5%ae%9e%e7%8e%b0%e4%b8%80%e4%b8%aa%e5%8f%98%e5%a3%b0%e5%99%a8","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/157972.html","title":{"rendered":"\u5982\u4f55\u7528javascript\u5b9e\u73b0\u4e00\u4e2a\u53d8\u58f0\u5668"},"content":{"rendered":"

\"\u5982\u4f55\u7528javascript\u5b9e\u73b0\u4e00\u4e2a\u53d8\u58f0\u5668\"<\/p>\n

\u8981\u7528JavaScript\u5b9e\u73b0\u4e00\u4e2a\u53d8\u58f0\u5668\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u51e0\u4e2a\u6b65\u9aa4\u6765\u5b9e\u73b0\uff1a\u83b7\u53d6\u97f3\u9891\u8f93\u5165\u3001\u97f3\u9891\u5904\u7406\u3001\u5e94\u7528\u6548\u679c\u4ee5\u53ca\u8f93\u51fa\u97f3\u9891\u3002<\/strong> \u5176\u4e2d\uff0c\u97f3\u9891\u5904\u7406<\/strong>\u626e\u6f14\u7740\u4e2d\u5fc3\u89d2\u8272\u3002\u5728\u8fd9\u4e00\u6b65\uff0c\u4f60\u53ef\u4ee5\u5229\u7528Web Audio API\uff0c\u7279\u522b\u662f\u5176\u4e2d\u7684AudioContext<\/code>\u63a5\u53e3\uff0c\u6765\u5b9e\u73b0\u5bf9\u539f\u59cb\u97f3\u9891\u6570\u636e\u7684\u64cd\u4f5c\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u901a\u8fc7\u8c03\u6574\u901f\u7387\u3001\u9891\u7387\u7b49\u53c2\u6570\u6765\u66f4\u6539\u58f0\u97f3\u7684\u7279\u6027\uff0c\u4e3a\u58f0\u97f3\u6dfb\u52a0\u7279\u5b9a\u7684\u6548\u679c\uff0c\u6bd4\u5982\u56de\u58f0\u3001\u6df7\u54cd\u7b49\u3002\u8fdb\u4e00\u6b65\uff0c\u8fd9\u4e9b\u5904\u7406\u8fc7\u7a0b\u53ef\u4ee5\u4f9d\u636e\u7528\u6237\u7684\u9009\u62e9\u52a8\u6001\u8c03\u6574\uff0c\u4f7f\u5f97\u53d8\u58f0\u5668\u80fd\u591f\u63d0\u4f9b\u591a\u6837\u5316\u7684\u58f0\u97f3\u6548\u679c\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u83b7\u53d6\u97f3\u9891\u8f93\u5165<\/h2>\n<\/p>\n

\u8981\u521b\u5efa\u4e00\u4e2a\u53d8\u58f0\u5668\uff0c\u9996\u5148\u9700\u8981\u6709\u97f3\u9891\u8f93\u5165\u3002\u5728Web\u73af\u5883\u4e2d\uff0c\u8fd9\u901a\u5e38\u610f\u5473\u7740\u901a\u8fc7\u7528\u6237\u7684\u9ea6\u514b\u98ce\u8f93\u5165\u58f0\u97f3\u3002\u4f7f\u7528navigator.mediaDevices.getUserMedia()<\/code> API\u53ef\u4ee5\u8bf7\u6c42\u7528\u6237\u7684\u9ea6\u514b\u98ce\u6743\u9650\uff0c\u5e76\u83b7\u53d6\u4e00\u4e2a\u97f3\u9891\u6d41\u3002<\/p>\n<\/p>\n

\u4e00\u65e6\u83b7\u53d6\u4e86\u97f3\u9891\u6d41\uff0c\u5c31\u53ef\u4ee5\u5c06\u5b83\u8fde\u63a5\u5230Web Audio API\u7684AudioContext<\/code>\u4e0a\uff0c\u540e\u8005\u662f\u8fdb\u884c\u97f3\u9891\u5904\u7406\u7684\u57fa\u7840\u8bbe\u65bd\u3002\u8fd9\u6837\uff0c\u4ece\u9ea6\u514b\u98ce\u6355\u83b7\u7684\u97f3\u9891\u6570\u636e\u5c31\u53ef\u4ee5\u88ab\u8fdb\u4e00\u6b65\u5904\u7406\u548c\u53d8\u6362\u4e86\u3002<\/p>\n<\/p>\n

\u4e8c\u3001\u97f3\u9891\u5904\u7406<\/h2>\n<\/p>\n

\u5728\u97f3\u9891\u5904\u7406\u9636\u6bb5\uff0c\u6838\u5fc3\u4efb\u52a1\u662f\u7528Web Audio API\u6765\u64cd\u4f5c\u6355\u83b7\u7684\u97f3\u9891\u4fe1\u53f7\u3002AudioContext<\/code>\u63d0\u4f9b\u4e86\u4e00\u4e2a\u5f3a\u5927\u7684\u63a5\u53e3\u6765\u521b\u5efa\u3001\u5904\u7406\u548c\u64cd\u7eb5\u97f3\u9891\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528\u8be5API\u63d0\u4f9b\u7684\u591a\u79cd\u8282\u70b9\uff08\u5982GAI<\/a>nNode<\/code>\u3001BiquadFilterNode<\/code>\u3001DelayNode<\/code>\u7b49\uff09\uff0c\u6765\u5b9e\u73b0\u58f0\u97f3\u7684\u5404\u79cd\u6548\u679c\u3002<\/p>\n<\/p>\n

\u5bf9\u4e8e\u53d8\u58f0\u5668\u6765\u8bf4\uff0c\u6700\u91cd\u8981\u7684\u5904\u7406\u73af\u8282\u53ef\u80fd\u662f\u4f7f\u7528AudioBufferSourceNode<\/code>\u6765\u64ad\u653e\u3001\u4fee\u6539\u97f3\u9891\u6570\u636e\u3002\u901a\u8fc7\u8c03\u6574\u64ad\u653e\u901f\u5ea6\uff08playbackRate<\/code>\u5c5e\u6027\uff09\u53ef\u4ee5\u5b9e\u73b0\u63d0\u9ad8\u6216\u964d\u4f4e\u97f3\u8c03\u7684\u6548\u679c\uff0c\u540c\u65f6\u8fd8\u53ef\u4ee5\u6dfb\u52a0DynamicsCompressorNode<\/code>\u6765\u538b\u7f29\u52a8\u6001\u8303\u56f4\uff0c\u4f7f\u58f0\u97f3\u66f4\u52a0\u5e73\u6ed1\uff0c\u6216\u8005\u4f7f\u7528WaveShaperNode<\/code>\u6765\u4ea7\u751f\u5931\u771f\u6548\u679c\uff0c\u4f7f\u97f3\u6548\u66f4\u52a0\u591a\u6837\u5316\u3002<\/p>\n<\/p>\n

\u4e09\u3001\u5e94\u7528\u6548\u679c<\/h2>\n<\/p>\n

\u4e3a\u4e86\u4f7f\u53d8\u58f0\u5668\u66f4\u52a0\u4e30\u5bcc\u591a\u5f69\uff0c\u53ef\u4ee5\u7ed9\u7528\u6237\u63d0\u4f9b\u9009\u62e9\u4e0d\u540c\u6548\u679c\u7684\u9009\u9879\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u5b9e\u73b0\u4e00\u4e9b\u9884\u8bbe\u7684\u6548\u679c\u8bbe\u7f6e\uff0c\u5982\u201c\u673a\u5668\u4eba\u201d\u3001\u201c\u56de\u97f3\u201d\u6216\u8005\u201c\u602a\u517d\u201d\u58f0\u97f3\u7b49\u3002<\/p>\n<\/p>\n

\u6bcf\u79cd\u6548\u679c\u53ef\u4ee5\u901a\u8fc7\u7ec4\u5408\u548c\u914d\u7f6e\u4e0d\u540c\u7684\u97f3\u9891\u5904\u7406\u8282\u70b9\u6765\u5b9e\u73b0\u3002\u6bd4\u5982\uff0c\u8981\u521b\u5efa\u4e00\u4e2a\u201c\u56de\u97f3\u201d\u6548\u679c\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e00\u4e2a\u6216\u591a\u4e2aDelayNode<\/code>\u914d\u5408GainNode<\/code>\u6765\u5b9e\u73b0\u97f3\u9891\u7684\u5ef6\u8fdf\u548c\u8870\u51cf\u3002\u4e3a\u4e86\u8fbe\u5230\u201c\u673a\u5668\u4eba\u201d\u6548\u679c\uff0c\u53ef\u4ee5\u7ed3\u5408\u4f7f\u7528OscillatorNode<\/code>\u548cModulatorNode<\/code>\u6765\u5bf9\u539f\u58f0\u8fdb\u884c\u8c03\u5236\u3002<\/p>\n<\/p>\n

\u56db\u3001\u8f93\u51fa\u97f3\u9891<\/h2>\n<\/p>\n

\u6700\u540e\uff0c\u5904\u7406\u8fc7\u7684\u97f3\u9891\u9700\u8981\u88ab\u8f93\u51fa\u3002\u5728Web\u5e94\u7528\u4e2d\uff0c\u8fd9\u901a\u5e38\u610f\u5473\u7740\u901a\u8fc7\u626c\u58f0\u5668\u64ad\u653e\u3002\u901a\u8fc7\u5c06\u5904\u7406\u8282\u70b9\u7684\u6700\u7ec8\u8f93\u51fa\u8fde\u63a5\u5230AudioContext<\/code>\u7684destination<\/code>\u5c5e\u6027\uff0c\u53ef\u4ee5\u5b9e\u73b0\u8fd9\u4e00\u70b9\u3002<\/p>\n<\/p>\n

\u6b64\u5916\uff0c\u4e3a\u4e86\u63d0\u5347\u7528\u6237\u4f53\u9a8c\uff0c\u8fd8\u53ef\u4ee5\u5b9e\u73b0\u5b9e\u65f6\u9884\u89c8\u529f\u80fd\uff0c\u5141\u8bb8\u7528\u6237\u5728\u5e94\u7528\u6548\u679c\u524d\u542c\u5230\u5373\u5c06\u88ab\u5904\u7406\u7684\u97f3\u9891\u3002\u4e3a\u6b64\uff0c\u53ef\u4ee5\u5efa\u7acb\u4e00\u4e2a\u7528\u4e8e\u5373\u65f6\u5904\u7406\u548c\u56de\u653e\u7684\u97f3\u9891\u8def\u5f84\uff0c\u800c\u5728\u7528\u6237\u6ee1\u610f\u5e76\u9009\u62e9\u6700\u7ec8\u6548\u679c\u540e\uff0c\u518d\u8fdb\u884c\u6700\u7ec8\u7684\u97f3\u9891\u6e32\u67d3\u548c\u8f93\u51fa\u3002<\/p>\n<\/p>\n

\u901a\u8fc7\u4e0a\u8ff0\u6b65\u9aa4\uff0c\u4f60\u5c31\u53ef\u4ee5\u7528JavaScript\u5b9e\u73b0\u4e00\u4e2a\u57fa\u672c\u7684\u53d8\u58f0\u5668\u5e94\u7528\u3002\u8fdb\u4e00\u6b65\uff0c\u4f60\u8fd8\u53ef\u4ee5\u63a2\u7d22\u66f4\u591a\u7684Web Audio API\u7684\u7279\u6027\u6765\u4e30\u5bcc\u4f60\u7684\u53d8\u58f0\u5668\uff0c\u6bd4\u5982\u5b9e\u73b0\u97f3\u9891\u7684\u53ef\u89c6\u5316\uff0c\u6216\u8005\u7ed3\u5408\u5176\u4ed6Web\u6280\u672f\uff08\u5982WebSocket\uff09\u6765\u5b9e\u73b0\u5728\u7ebf\u8bed\u97f3\u804a\u5929\u7684\u5b9e\u65f6\u53d8\u58f0\u529f\u80fd\u3002<\/p>\n<\/p>\n

\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n

Q1: \u6211\u60f3\u7528 JavaScript \u5236\u4f5c\u4e00\u4e2a\u53d8\u58f0\u5668\uff0c\u9700\u8981\u54ea\u4e9b\u6b65\u9aa4\uff1f<\/strong><\/p>\n

A1: \u5236\u4f5c JavaScript \u53d8\u58f0\u5668\u7684\u6b65\u9aa4\u5982\u4e0b\uff1a<\/p>\n

    \n
  1. \u9996\u5148\uff0c\u4f60\u9700\u8981\u8bbe\u7f6e\u4e00\u4e2a HTML \u9875\u9762\uff0c\u5176\u4e2d\u5305\u62ec\u4e00\u4e2a\u97f3\u9891\u6587\u4ef6\u7684\u8f93\u5165\u6807\u7b7e\u548c\u4e00\u4e2a\u64ad\u653e\u6309\u94ae\u3002<\/li>\n
  2. \u63a5\u4e0b\u6765\uff0c\u4f7f\u7528 JavaScript \u6765\u83b7\u53d6\u7528\u6237\u8f93\u5165\u7684\u97f3\u9891\u6587\u4ef6\uff0c\u5e76\u5c06\u5176\u52a0\u8f7d\u5230\u7f51\u9875\u4e2d\u3002<\/li>\n
  3. \u4f7f\u7528 Web Audio API \u4e2d\u7684 AudioContext \u5bf9\u8c61\u6765\u5904\u7406\u97f3\u9891\u6570\u636e\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528 AudioContext \u63d0\u4f9b\u7684\u5404\u79cd\u65b9\u6cd5\u6765\u6539\u53d8\u97f3\u9891\u7684\u97f3\u8c03\u3001\u97f3\u91cf\u548c\u65f6\u95f4\u7b49\u5c5e\u6027\u3002<\/li>\n
  4. \u4e3a\u7528\u6237\u63d0\u4f9b\u4e00\u4e9b\u63a7\u5236\u9009\u9879\uff0c\u4f8b\u5982\u6ed1\u5757\u6216\u6309\u94ae\uff0c\u4ee5\u4fbf\u6839\u636e\u7528\u6237\u7684\u9009\u62e9\u6539\u53d8\u97f3\u9891\u5c5e\u6027\u3002<\/li>\n
  5. \u6700\u540e\uff0c\u4f7f\u7528 JavaScript \u5c06\u5904\u7406\u8fc7\u7684\u97f3\u9891\u6570\u636e\u8f93\u51fa\u5230\u8bd5\u542c\u533a\u57df\uff0c\u8ba9\u7528\u6237\u53ef\u4ee5\u5373\u65f6\u542c\u5230\u53d8\u58f0\u6548\u679c\u3002<\/li>\n<\/ol>\n

    Q2: JavaScript \u53d8\u58f0\u5668\u5982\u4f55\u6539\u53d8\u97f3\u9891\u7684\u97f3\u8c03\uff1f<\/strong><\/p>\n

    A2: \u8981\u6539\u53d8\u97f3\u9891\u7684\u97f3\u8c03\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528 Web Audio API \u7684 pitch shifting \u529f\u80fd\u3002\u4ee5\u4e0b\u662f\u5b9e\u73b0\u53d8\u58f0\u97f3\u8c03\u7684\u6b65\u9aa4\uff1a<\/p>\n

      \n
    1. \u4f7f\u7528 AudioContext \u521b\u5efa\u4e00\u4e2a AudioBufferSourceNode \u5bf9\u8c61\uff0c\u5e76\u5c06\u97f3\u9891\u6570\u636e\u52a0\u8f7d\u5230\u5176\u4e2d\u3002<\/li>\n
    2. \u521b\u5efa\u4e00\u4e2a ScriptProcessorNode \u5bf9\u8c61\uff0c\u5e76\u5c06\u5176\u8fde\u63a5\u5230 AudioBufferSourceNode\u3002<\/li>\n
    3. \u5728 ScriptProcessorNode \u4e2d\u7684\u56de\u8c03\u51fd\u6570\u4e2d\uff0c\u4f60\u53ef\u4ee5\u8bbf\u95ee\u97f3\u9891\u6570\u636e\uff0c\u5e76\u4f7f\u7528 JavaScript \u7f16\u5199\u7b97\u6cd5\u6765\u6539\u53d8\u97f3\u8c03\u3002\u4f8b\u5982\uff0c\u4f60\u53ef\u4ee5\u4fee\u6539\u97f3\u9891\u6570\u636e\u7684\u91c7\u6837\u7387\uff0c\u4ece\u800c\u6539\u53d8\u97f3\u8c03\u3002<\/li>\n
    4. \u5c06\u5904\u7406\u540e\u7684\u97f3\u9891\u6570\u636e\u8f93\u51fa\u5230\u97f3\u9891\u64ad\u653e\u5668\uff0c\u8ba9\u7528\u6237\u53ef\u4ee5\u8bd5\u542c\u53d8\u58f0\u6548\u679c\u3002<\/li>\n<\/ol>\n

      Q3: \u5982\u4f55\u4f7f\u7528 JavaScript \u5b9e\u73b0\u4e00\u4e2a\u5b9e\u65f6\u7684\u53d8\u58f0\u5668\uff1f<\/strong><\/p>\n

      A3: \u8981\u5b9e\u73b0\u5b9e\u65f6\u7684\u53d8\u58f0\u5668\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528 Web Audio API \u63d0\u4f9b\u7684\u5b9e\u65f6\u5904\u7406\u529f\u80fd\u3002\u4ee5\u4e0b\u662f\u4e00\u79cd\u5b9e\u73b0\u65b9\u6cd5\uff1a<\/p>\n

        \n
      1. \u521b\u5efa\u4e00\u4e2a MediaStreamAudioSourceNode \u5bf9\u8c61\uff0c\u5c06\u5176\u8fde\u63a5\u5230\u97f3\u9891\u8f93\u5165\u8bbe\u5907\uff08\u4f8b\u5982\u9ea6\u514b\u98ce\uff09\u3002\u8fd9\u6837\u5c31\u53ef\u4ee5\u5b9e\u65f6\u83b7\u53d6\u97f3\u9891\u8f93\u5165\u6570\u636e\u3002<\/li>\n
      2. \u4f7f\u7528 JavaScript \u7f16\u5199\u53d8\u58f0\u7b97\u6cd5\uff0c\u5e76\u5728 ScriptProcessorNode \u4e2d\u7684\u56de\u8c03\u51fd\u6570\u4e2d\u5e94\u7528\u8fd9\u4e9b\u7b97\u6cd5\u3002\u4f60\u53ef\u4ee5\u4fee\u6539\u97f3\u9891\u6570\u636e\u7684\u91c7\u6837\u7387\u3001\u97f3\u91cf\u6216\u97f3\u8c03\uff0c\u4ee5\u5b9e\u73b0\u4e0d\u540c\u7684\u53d8\u58f0\u6548\u679c\u3002<\/li>\n
      3. \u5c06\u5904\u7406\u540e\u7684\u97f3\u9891\u6570\u636e\u8f93\u51fa\u5230\u97f3\u9891\u8f93\u51fa\u8bbe\u5907\uff0c\u8ba9\u7528\u6237\u53ef\u4ee5\u542c\u5230\u5b9e\u65f6\u7684\u53d8\u58f0\u6548\u679c\u3002<\/li>\n
      4. \u63d0\u4f9b\u4e00\u4e9b\u63a7\u5236\u9009\u9879\uff0c\u4f8b\u5982\u6ed1\u5757\u6216\u6309\u94ae\uff0c\u8ba9\u7528\u6237\u53ef\u4ee5\u5b9e\u65f6\u8c03\u6574\u53d8\u58f0\u6548\u679c\u7684\u53c2\u6570\u3002<\/li>\n<\/ol>\n

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