{"id":45645,"date":"2023-06-19T15:59:44","date_gmt":"2022-11-05T13:01:20","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/45645-2\/"},"modified":"2024-04-30T09:39:33","modified_gmt":"2024-04-30T01:39:33","slug":"45645-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/45645-2\/","title":{"rendered":""},"content":{"rendered":"

\u306f\u3058\u3081\u306b<\/h2>\n

\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001 WebAudio \u3068 Rust \u3067\u30dc\u30a4\u30b9\u30c1\u30a7\u30f3\u30b8\u30e3\u30fc\u306e\u30a8\u30d5\u30a7\u30af\u30c8\u3092\u4f5c\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n

\u5177\u4f53\u7684\u306b\u306f Rust \u306e\u30b3\u30fc\u30c9\u3092 WASM \u30e2\u30b8\u30e5\u30fc\u30eb\u3068\u3057\u3066\u30d3\u30eb\u30c9\u3057\u3066 JavaScript \u306b\u7d44\u307f\u8fbc\u307f\u3001\u3053\u308c\u3092 WebAudio API \u304b\u3089\u547c\u3073\u51fa\u3059\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n

\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9<\/h2>\n

 <\/p>\n

\u30b5\u30f3\u30d7\u30eb\u30b5\u30a4\u30c8<\/h2>\n

\u5b9f\u969b\u306b\u81ea\u5206\u306e\u58f0\u3092\u4f7f\u3063\u3066\u8a66\u305b\u308b\u30b5\u30f3\u30d7\u30eb\u30b5\u30a4\u30c8\u3092\u7528\u610f\u3057\u307e\u3057\u305f\u3002<\/p>\n

\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8<\/div>\n

 <\/p>\n

\u30ca\u30a4\u30fc\u30d6\u306a\u5b9f\u88c5\u306b\u306a\u3063\u3066\u3044\u308b\u305f\u3081\u54c1\u8cea\u306b\u3064\u3044\u3066\u306f\u3042\u307e\u308a\u826f\u304f\u306a\u3044\u3067\u3059\u304c\u3001\u30d6\u30e9\u30a6\u30b6\u5185\u3067\u97f3\u58f0\u3092\u52a0\u5de5\u3067\u304d\u308b\u3053\u3068\u306f\u78ba\u8a8d\u3067\u304d\u308b\u304b\u3068\u601d\u3044\u307e\u3059\u3002
\n\uff08\u610f\u56f3\u305b\u305a\u5927\u304d\u306a\u97f3\u304c\u51fa\u3066\u3057\u307e\u3046\u304b\u3082\u3057\u308c\u306a\u3044\u306e\u3067\u3001\u97f3\u91cf\u306b\u306f\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002\uff09<\/p>\n

\u5404\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u610f\u5473\u306f\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n

\n
\u30d1\u30e9\u30e1\u30fc\u30bf\u610f\u5473Dry\/Wet\u30aa\u30ea\u30b8\u30ca\u30eb\u306e\u97f3\u58f0\u3068\u52a0\u5de5\u5f8c\u306e\u97f3\u58f0\u3092\u3069\u308c\u304f\u3089\u3044\u306e\u5272\u5408\u3067\u6df7\u305c\u308b\u304b\u3002\u53f3\u306b\u884c\u304f\u307b\u3069\u52a0\u5de5\u3057\u305f\u58f0\u306e\u5272\u5408\u304c\u591a\u304f\u306a\u308a\u307e\u3059Output Gain\u51fa\u529b\u3059\u308b\u97f3\u91cfPitch Shift\u97f3\u58f0\u306e\u9ad8\u3055\u3092\u5909\u5316\u3055\u305b\u308b\u5ea6\u5408\u3044\u3002\u53f3\u306b\u884c\u304f\u307b\u3069\u97f3\u304c\u9ad8\u304f\u306a\u308a\u307e\u3059Formant Shift\u30d5\u30a9\u30eb\u30de\u30f3\u30c8\u3092\u5909\u5316\u3055\u305b\u308b\u5ea6\u5408\u3044\u3002\u53f3\u306b\u884c\u304f\u307b\u3069\u5973\u6027\u3084\u5e7c\u3044\u611f\u3058\u306e\u58f0\u306b\u306a\u308a\u307e\u3059Envelope Order\u97f3\u58f0\u4fe1\u53f7\u304b\u3089\u30d5\u30a9\u30eb\u30de\u30f3\u30c8\u3092\u62bd\u51fa\u3059\u308b\u3068\u304d\u306e\u7d30\u304b\u3055\u3092\u5909\u3048\u308b\u30d1\u30e9\u30e1\u30fc\u30bf\u3067\u3059\u3002\u81ea\u5206\u306e\u58f0\u306b\u5408\u308f\u305b\u3066\u9069\u5f53\u306a\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u63a2\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/div>\n<\/div>\n

\u7537\u6027\u306e\u4f4e\u3044\u58f0\u3067\u3042\u3063\u3066\u3082\u3001 Pitch Shift \u3068 Formant Shift \u3092\u9ad8\u3081\u306e\u5024\u306b\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\uff08\u3042\u308b\u7a0b\u5ea6\uff09\u5973\u6027\u306e\u3088\u3046\u306a\u58f0\u306b\u52a0\u5de5\u3067\u304d\u307e\u3059\u3002<\/p>\n

\u4f7f\u7528\u3057\u3066\u3044\u308b\u6280\u8853\u306b\u3064\u3044\u3066<\/h2>\n

\u3053\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306f WebAudio API \u3067\u5165\u529b\u3057\u305f\u97f3\u58f0\u3092 WASM \u3067\u52a0\u5de5\u3057\u3001\u305d\u308c\u3092\u307e\u305f WebAudio API \u7d4c\u7531\u3067\u30aa\u30fc\u30c7\u30a3\u30aa\u30c7\u30d0\u30a4\u30b9\u306b\u6d41\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u3053\u306e\u3068\u304d\u3001 WASM \u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u3092 Rust \u3067\u5b9f\u88c5\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u305f\u3081\u3001\u5b9f\u969b\u306b Rust \u3067\u30dc\u30a4\u30b9\u30c1\u30a7\u30f3\u30b8\u30e3\u30fc\u306e\u4fe1\u53f7\u51e6\u7406\u306e\u30b3\u30fc\u30c9\u3092\u5b9f\u88c5\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

WebAudio API \u3068\u306f<\/h2>\n

WebAudio API \u306f Web \u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5185\u3067\u30aa\u30fc\u30c7\u30a3\u30aa\u3092\u5408\u6210\u3057\u305f\u308a\u52a0\u5de5\u3057\u305f\u308a\u3059\u308b\u305f\u3081\u306e API \u7fa4\u3067\u3059\u3002<\/p>\n

2021\u5e74\uff16\u6708\u306b W3C \u52e7\u544a\u3068\u306a\u308a\u3001\u73fe\u5728\u306f\u591a\u304f\u306e\u30d6\u30e9\u30a6\u30b6\u3067\u5229\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n

https:\/\/www.w3.org\/TR\/webaudio\/
\nhttps:\/\/www.g200kg.com\/archives\/2021\/07\/w3c-web-audio-a.html<\/p>\n

WebAudio API \u306f AudioContext \u3068\u3044\u3046\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u4e2d\u306b\u3001\u3044\u304f\u3064\u304b\u306e Node \u3068\u547c\u3070\u308c\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u30b0\u30e9\u30d5\u72b6\u306b\u7e4b\u3044\u3067\u30aa\u30fc\u30c7\u30a3\u30aa\u51e6\u7406\u3092\u884c\u3046\u4ed5\u7d44\u307f\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n

\"image.png\"<\/div>\n

Node \u306f\u5165\u529b\u7528\u3001\u30a8\u30d5\u30a7\u30af\u30c8\u7528\u3001\u51fa\u529b\u7528\u306e\u4e09\u7a2e\u985e\u304c\u5b58\u5728\u3057\u307e\u3059\u3002<\/p>\n

\n
\u30ce\u30fc\u30c9\u7a2e\u5225\u6a5f\u80fd\u5165\u529b\u30ce\u30fc\u30c9\u30de\u30a4\u30af\u5165\u529b\u3001<audio><\/code>\u30bf\u30b0\u306e\u97f3\u58f0\u30c7\u30fc\u30bf\u306e\u5165\u529b\u3001\u77e9\u5f62\u6ce2\uff0f\u65b9\u5f62\u6ce2\u306a\u3069\u306e\u6ce2\u5f62\u5408\u6210\u306a\u3069\u30a8\u30d5\u30a7\u30af\u30c8\u30ce\u30fc\u30c9\u30c7\u30a3\u30ec\u30a4\u3001\u30d5\u30a3\u30eb\u30bf\u30fc\u3001\u30ea\u30d0\u30fc\u30d6\u306a\u3069\u51fa\u529b\u30ce\u30fc\u30c9\u30b9\u30d4\u30fc\u30ab\u30fc\u3084 WebRTC \u306e AudioTrack \u3078\u306e\u51fa\u529b\u3092\u884c\u3046<\/div>\n<\/div>\n

\u5177\u4f53\u7684\u306b\u3069\u306e\u3088\u3046\u306a\u30ce\u30fc\u30c9\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u308b\u304b\u306f https:\/\/developer.mozilla.org\/ja\/docs\/Web\/API\/Web_Audio_API \u306b\u8a18\u8f09\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u307e\u305f WebAudio API \u306b\u3064\u3044\u3066\u306f\u4ee5\u4e0b\u306e\u30b5\u30a4\u30c8\u306e\u3088\u3046\u306a\u89e3\u8aac\u8a18\u4e8b\u304c\u8272\u3005\u3068\u3042\u308b\u305f\u3081\u3001\u3088\u308a\u8a73\u3057\u304f\u306f\u305d\u308c\u3089\u3092\u3054\u53c2\u7167\u304f\u3060\u3055\u3044\u3002<\/p>\n

 <\/p>\n

AudioWorketNode \u3068 AudioWorketProcessor<\/h2>\n

WebAudio API \u306b\u306f\u97f3\u3092\u52a0\u5de5\u3059\u308b\u305f\u3081\u306e Node \u304c\u3044\u304f\u3064\u304b\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u305d\u308c\u3089\u65e2\u5b58\u306e Node \u3067\u306f\u6a5f\u80fd\u304c\u8db3\u308a\u306a\u3044\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u3088\u3046\u306a\u5834\u5408\u306f\u3001 AudioWorketNode \u3068\u3044\u3046 Node \u3068\u3001\u305d\u308c\u306b\u5bfe\u5fdc\u3059\u308b AudioWorkletProcessor \u30af\u30e9\u30b9\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3067\u30ab\u30b9\u30bf\u30e0\u306e\u4fe1\u53f7\u51e6\u7406\u3092\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002<\/p>\n

AudioContext \u306e\u4fe1\u53f7\u51e6\u7406\u3067\u3001 AudioWorkletNode \u306b\u5bfe\u3057\u3066\u4fe1\u53f7\u304c\u6d41\u308c\u3066\u304f\u308b\u3068\u3001\u305d\u306e Node \u306b\u5bfe\u5fdc\u3059\u308b AudioWorketProcessor \u306e process() \u30e1\u30bd\u30c3\u30c9\u304c\u547c\u3073\u51fa\u3055\u308c\u307e\u3059\u3002<\/p>\n

\u30d7\u30ed\u30b0\u30e9\u30de\u306f AudioWorketProcessor \u3092\u7d99\u627f\u3057\u305f\u30af\u30e9\u30b9\u3092\u5b9a\u7fa9\u3057\u3001\u305d\u306e process() \u30e1\u30bd\u30c3\u30c9\u306b\u30ab\u30b9\u30bf\u30e0\u306e\u4fe1\u53f7\u51e6\u7406\u3092\u5b9f\u88c5\u3057\u307e\u3059\u3002\u305d\u3057\u3066 AudioWorketNode \u306b\u7d10\u3065\u3051\u3066\u304a\u304f\u3053\u3068\u3067\u3001\u30ab\u30b9\u30bf\u30e0\u306e\u4fe1\u53f7\u51e6\u7406\u304c\u547c\u3073\u51fa\u3055\u308c\u308b\u6d41\u308c\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n

\/\/ AudioWorkletProcessor \u3092\u7d99\u627f\u3057\u305f\u30ab\u30b9\u30bf\u30e0\u306e Processor \u3092\u5b9a\u7fa9<\/span>\r\nclass<\/span> MyProcessor<\/span> extends<\/span> AudioWorkletProcessor<\/span> {<\/span>\r\n  constructor<\/span>()<\/span> {<\/span>\r\n    super<\/span>();<\/span>\r\n    \/\/...<\/span>\r\n  }<\/span>\r\n\r\n  \/\/ \u30ab\u30b9\u30bf\u30e0\u30a8\u30d5\u30a7\u30af\u30c8\u51e6\u7406\u306e\u305f\u3081\u306e\u95a2\u6570\u3002<\/span>\r\n  \/\/ WebAudio API \u304b\u3089\u81ea\u52d5\u3067\u547c\u3073\u51fa\u3055\u308c\u308b<\/span>\r\n  process<\/span>(<\/span>input<\/span>,<\/span> output<\/span>,<\/span> parameter<\/span>)<\/span> {<\/span>\r\n    \/\/ input \u306b\u542b\u307e\u308c\u3066\u3044\u308b\u30aa\u30fc\u30c7\u30a3\u30aa\u30c7\u30fc\u30bf\u3092\u52a0\u5de5\u3057\u3066<\/span>\r\n    \/\/ output \u306b\u66f8\u304d\u8fbc\u3080<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n\r\n\/\/ \u3053\u306e\u30af\u30e9\u30b9\u3092 Processor \u3068\u3044\u3046\u540d\u524d\u3067\u767b\u9332<\/span>\r\nregisterProcessor<\/span>(<\/span>\"<\/span>Processor<\/span>\"<\/span>,<\/span> MyProcessor<\/span>);<\/span>\r\n<\/code><\/pre>\n
class<\/span> ProcessorNode<\/span> extends<\/span> AudioWorkletNode<\/span> {<\/span>\r\n  \/\/ ...<\/span>\r\n};<\/span>\r\n\r\nasync<\/span> function<\/span> setupAudioProcess<\/span>()<\/span>\r\n{<\/span>\r\n  let<\/span> audioContext<\/span> =<\/span> getAudioContextFromSomewhere<\/span>();<\/span>\r\n\r\n  \/\/ MyProcessor \u3092\u5b9a\u7fa9\u3057\u3066\u3044\u308b\u30d5\u30a1\u30a4\u30eb\u3092 AudioContext \u5185\u306b\u8aad\u307f\u8fbc\u307f <\/span>\r\n  const<\/span> processorUrl<\/span> =<\/span> \"<\/span>Processor.js<\/span>\"<\/span>;<\/span>\r\n  try<\/span> {<\/span>\r\n    await<\/span> audioContext<\/span>.<\/span>audioWorklet<\/span>.<\/span>addModule<\/span>(<\/span>processorUrl<\/span>);<\/span>\r\n  }<\/span> catch <\/span>(<\/span>e<\/span>)<\/span> {<\/span>\r\n    let<\/span> err<\/span> =<\/span> e<\/span> as<\/span> unknown<\/span> as<\/span> Error<\/span>;<\/span>\r\n    throw<\/span> new<\/span> Error<\/span>(<\/span>\r\n      `Failed to load audio analyzer worklet at url: <\/span>${<\/span>processorUrl<\/span>}<\/span>. Further info: <\/span>${<\/span>err<\/span>.<\/span>message<\/span>}<\/span>`<\/span>\r\n    );<\/span>\r\n  }<\/span>\r\n\r\n  \/\/ \u767b\u9332\u3057\u305f\u540d\u524d\u306e Processor \u3068\u7d10\u4ed8\u3051\u308b\u5f62\u3067 AudioWorkletNode \u3092\u69cb\u7bc9<\/span>\r\n  let<\/span> node<\/span> =<\/span> new<\/span> ProcessorNode<\/span>(<\/span>audioContext<\/span>,<\/span> \"<\/span>Processor<\/span>\"<\/span>);<\/span>\r\n\r\n  \/\/ \u69cb\u7bc9\u3057\u305f\u30ce\u30fc\u30c9\u306f\u5225\u306e\u30ce\u30fc\u30c9\u306b\u63a5\u7d9a\u3067\u304d\u308b<\/span>\r\n  node<\/span>.<\/span>connect<\/span>(<\/span>audioContext<\/span>.<\/span>destination<\/span>);<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
AudioWorketProcessor \u306e\u51e6\u7406\u306f UI \u51e6\u7406\u7528\u306e\u30b9\u30ec\u30c3\u30c9\u3068\u306f\u5225\u306e\u5c02\u7528\u306e\u30b9\u30ec\u30c3\u30c9\u3067\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002
\n\u305d\u306e\u305f\u3081\u3001 UI \u306e\u51e6\u7406\u304b\u3089\u76f4\u63a5 AudioWorketProcessor \u306e\u95a2\u6570\u3092\u547c\u3073\u51fa\u3057\u305f\u308a\u3001\u9006\u306b AudioWorketProcessor \u304b\u3089 UI \u306e\u95a2\u6570\u3092\u547c\u3073\u51fa\u3057\u305f\u308a\u306f\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n
UI \u3068 AudioWorketProcessor \u3067\u76f8\u4e92\u306b\u60c5\u5831\u3092\u3084\u308a\u53d6\u308a\u3059\u308b\u306b\u306f\u3001 AudioWorketNode \u3068 AudioWorketProcessor \u306b\u305d\u308c\u305e\u308c\u7528\u610f\u3055\u308c\u3066\u3044\u308b MessagePort \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f7f\u3063\u3066\u304a\u4e92\u3044\u306b\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u9001\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n
class<\/span> MyProcessor<\/span> extends<\/span> AudioWorkletProcessor<\/span> {<\/span>\r\n  \/\/ Node \u5074\u304b\u3089\u6765\u305f\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u53d7\u3051\u53d6\u308a\u51e6\u7406\u3092\u884c\u3046<\/span>\r\n  onmessage<\/span>(<\/span>event<\/span>)<\/span> {<\/span>\r\n    if <\/span>(<\/span>event<\/span>.<\/span>type<\/span> ===<\/span> \"<\/span>my-event-type1<\/span>\"<\/span>)<\/span> {<\/span>\r\n      doSomething<\/span>(<\/span>event<\/span>.<\/span>data<\/span>);<\/span>\r\n    }<\/span> else<\/span> if<\/span>(<\/span>event<\/span>.<\/span>type<\/span> ===<\/span> \"<\/span>my-event-type2<\/span>\"<\/span>)<\/span> {<\/span>\r\n      doSomething<\/span>(<\/span>event<\/span>.<\/span>data<\/span>);<\/span>\r\n    }<\/span>\r\n  }<\/span>\r\n\r\n  process<\/span>(<\/span>input<\/span>,<\/span> output<\/span>)<\/span> {<\/span>\r\n    let<\/span> shouldPostMessage<\/span> =<\/span> doSomething<\/span>(<\/span>input<\/span>,<\/span> output<\/span>);<\/span>\r\n    if<\/span>(<\/span>shouldPostMessage<\/span>)<\/span> {<\/span>\r\n      \/\/ Processor \u5074\u304b\u3089 Node \u5074\u306b\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u9001\u308b<\/span>\r\n      this<\/span>.<\/span>port<\/span>.<\/span>postMessage<\/span>({<\/span> type<\/span>:<\/span> \"<\/span>my-event-type3<\/span>\"<\/span>,<\/span> data<\/span>:<\/span> \"<\/span>...<\/span>\"<\/span> });<\/span>\r\n    }<\/span>\r\n  }<\/span>\r\n}<\/span>    \r\n<\/code><\/pre>\n
class<\/span> ProcessorNode<\/span> extends<\/span> AudioWorkletNode<\/span> {<\/span>\r\n\r\n  \/\/ Processor \u5074\u304b\u3089\u6765\u305f\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u53d7\u3051\u53d6\u308a\u51e6\u7406\u3092\u884c\u3046<\/span>\r\n  onmessage<\/span>(<\/span>event<\/span>)<\/span> {<\/span>\r\n    if <\/span>(<\/span>event<\/span>.<\/span>type<\/span> ===<\/span> \"<\/span>my-event-type3<\/span>\"<\/span>)<\/span> {<\/span>\r\n      doSomething<\/span>(<\/span>event<\/span>.<\/span>data<\/span>);<\/span>\r\n    }<\/span>\r\n  }<\/span>\r\n\r\n  myFunction1<\/span>(<\/span>type<\/span>,<\/span> value<\/span>)<\/span> {<\/span>\r\n    \/\/ Node \u5074\u304b\u3089 Processor \u5074\u306b\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u9001\u308b<\/span>\r\n    this<\/span>.<\/span>port<\/span>.<\/span>postMessage<\/span>({<\/span> type<\/span>,<\/span> data<\/span>:<\/span> value<\/span> });<\/span>\r\n  }<\/span>\r\n<\/code><\/pre>\n
AudioWorkletProcessor \u304b\u3089\u306e Rust \u306e\u30b3\u30fc\u30c9\u547c\u3073\u51fa\u3057<\/h2>\n
AudioWorkletProcessor \u3068 WASM<\/h3>\n
AudioWorkletProcessor \u306b\u3088\u308b\u30ab\u30b9\u30bf\u30e0\u306e\u4fe1\u53f7\u51e6\u7406\u306f JavaScript \u3067\u5b9f\u88c5\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u3068\u3044\u3046\u3053\u3068\u306f JavaScript \u304b\u3089 WASM \u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u547c\u3073\u51fa\u3057\u3066\u305d\u3063\u3061\u3067\u4fe1\u53f7\u51e6\u7406\u3092\u884c\u3046\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n
WASM \u3092\u4f7f\u7528\u3059\u308c\u3070\u3001\u3059\u3079\u3066\u3092 JavaScript \u3067\u5b9f\u88c5\u3059\u308b\u3088\u308a\u3082\u30cd\u30a4\u30c6\u30a3\u30d6\u306b\u8fd1\u3044\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3067\u51e6\u7406\u3092\u884c\u3048\u307e\u3059\u3002<\/p>\n
WASM \u30e2\u30b8\u30e5\u30fc\u30eb\u306f\u69d8\u3005\u306a\u8a00\u8a9e\u304b\u3089\u30d3\u30eb\u30c9\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u3066\u3001 Rust \u3082\u3053\u306e\u4ed5\u7d44\u307f\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
Rust \u3067 WASM \u30e2\u30b8\u30e5\u30fc\u30eb\u3082\u30d3\u30eb\u30c9\u3059\u308b\u65b9\u6cd5<\/h4>\n
Rust \u3067 WASM \u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u4f7f\u3063\u3066 AudioWorkletProcessor \u3068\u7d44\u307f\u5408\u308f\u305b\u308b\u65b9\u6cd5\u306f\u3053\u306e\u30b5\u30a4\u30c8\u304c\u4e01\u5be7\u3067\u308f\u304b\u308a\u3084\u3059\u3044\u306e\u3067\u53c2\u8003\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
 <\/p>\n
\u5177\u4f53\u7684\u306b\u306f\u6b21\u306e\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n
    \n
  • \n
      rust \u306e wasm-bindgen crate \u3092\u4f7f\u3063\u3066 Rust \u306e\u69cb\u9020\u4f53\u3084\u95a2\u6570\u3092 JavaScript \u304b\u3089\u5229\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u3002<\/ul>\n<\/li>\n<\/ul>\n
       <\/p>\n
        \u3055\u3089\u306b Rust \u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3092\u5b9f\u969b\u306b Wasm \u30e2\u30b8\u30e5\u30fc\u30eb\u3068\u3057\u3066\u30d3\u30eb\u30c9\u3059\u308b\u305f\u3081\u306b wasm-pack \u3092\u4f7f\u3063\u3066\u30d3\u30eb\u30c9\u3092\u884c\u3046\u3002<\/ul>\n
        wasm-pack \u3067\u30d3\u30eb\u30c9\u3092\u884c\u3046\u3068 .wasm \u30d5\u30a1\u30a4\u30eb\u3092\u542b\u3080\u3044\u304f\u3064\u304b\u306e\u30d5\u30a1\u30a4\u30eb\u304c\u751f\u6210\u3055\u308c\u307e\u3059\u3002<\/p>\n
        \"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8<\/div>\n
        AudioWorkletProcessor \u3067 WASM \u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u8aad\u307f\u8fbc\u3080\u306b\u306f\u3001\u3053\u308c\u3089\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u3067\u547c\u3073\u51fa\u305b\u308b\u5834\u6240\u306b\u914d\u7f6e\u3057\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
        WASM \u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u8aad\u307f\u8fbc\u307f<\/h3>\n
        AudioWorkletProcessor \u3067 WASM \u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u4f7f\u7528\u3059\u308b\u969b\u3001 fetch() \u95a2\u6570\u306a\u3069\u3092\u547c\u3073\u51fa\u3057\u3066\u76f4\u63a5 WASM \u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u53d6\u5f97\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u3053\u308c\u306f\u524d\u8ff0\u306e\u901a\u308a\u3001 AudioWorkletProcessor \u304c\u5c02\u7528\u306e AudioWorklet \u30b9\u30ec\u30c3\u30c9\u3067\u52d5\u4f5c\u3057\u3066\u3044\u308b\u305f\u3081\u3067\u3059\u3002<\/p>\n
        \u3053\u306e\u305f\u3081\u3001\u3000AudioWorkletProcessor \u3067 WASM \u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u4f7f\u7528\u3059\u308b\u306b\u306f\u3001 AudioWorkletNode \u304b\u3089\u30d0\u30a4\u30ca\u30ea\u5217\u3068\u3057\u3066 WASM \u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u6e21\u3059\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
        class<\/span> MyProcessor<\/span> extends<\/span> AudioWorkletProcessor<\/span> {<\/span>\r\n  onmessage<\/span>(<\/span>event<\/span>)<\/span> {<\/span>\r\n    \/\/ Node \u5074\u304b\u3089 WASM \u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u30d0\u30a4\u30ca\u30ea\u5217\u3092\u53d7\u3051\u53d6\u3063\u305f\u3089\u3001\u305d\u308c\u3092\u30b3\u30f3\u30d1\u30a4\u30eb\u3057\u3066\u4f7f\u7528\u53ef\u80fd\u306b\u3059\u308b\u3002<\/span>\r\n    \/\/ \u30b3\u30f3\u30d1\u30a4\u30eb\u304c\u5b8c\u4e86\u3057\u305f\u305d\u306e\u901a\u77e5\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u6295\u3052\u308b\u3002<\/span>\r\n    if <\/span>(<\/span>event<\/span>.<\/span>type<\/span> ===<\/span> \"<\/span>send-wasm-module<\/span>\"<\/span>)<\/span> {<\/span>\r\n      init<\/span>(<\/span>WebAssembly<\/span>.<\/span>compile<\/span>(<\/span>event<\/span>.<\/span>wasmBytes<\/span>)).<\/span>then<\/span>(()<\/span> =><\/span> {<\/span>\r\n        this<\/span>.<\/span>port<\/span>.<\/span>postMessage<\/span>({<\/span> type<\/span>:<\/span> '<\/span>wasm-module-loaded<\/span>'<\/span> });<\/span>\r\n      });<\/span>\r\n    }<\/span>\r\n  }<\/span>\r\n\r\n  process<\/span>(<\/span>input<\/span>,<\/span> output<\/span>)<\/span> {<\/span>\r\n    \/\/ ...<\/span>\r\n  }<\/span>\r\n}<\/span>    \r\n<\/code><\/pre>\n
        class<\/span> ProcessorNode<\/span> extends<\/span> AudioWorkletNode<\/span> {<\/span>\r\n  init<\/span>(<\/span>wasmBytes<\/span>)<\/span> {<\/span>\r\n    this<\/span>.<\/span>port<\/span>.<\/span>postMessage<\/span>({<\/span>\r\n      type<\/span>:<\/span> \"<\/span>send-wasm-module<\/span>\"<\/span>,<\/span>\r\n      wasmBytes<\/span>,<\/span>\r\n    });<\/span>\r\n  }<\/span> \r\n\r\n  onmessage<\/span>(<\/span>event<\/span>)<\/span> {<\/span>\r\n    if <\/span>(<\/span>event<\/span>.<\/span>type<\/span> ===<\/span> \"<\/span>wasm-module-loaded<\/span>\"<\/span>)<\/span> {<\/span>\r\n      \/\/ ...<\/span>\r\n    }<\/span>\r\n  }<\/span>\r\n};<\/span>\r\n<\/code><\/pre>\n
        async<\/span> function<\/span> setupAudioProcess<\/span>()<\/span>\r\n{<\/span>\r\n  \/\/ Fetch the WebAssembly module that performs processing audio.<\/span>\r\n  const<\/span> response<\/span> =<\/span> await<\/span> window<\/span>.<\/span>fetch<\/span>(<\/span>\"<\/span>wasm-audio\/wasm_audio_bg.wasm<\/span>\"<\/span>);<\/span>\r\n  const<\/span> wasmBytes<\/span> =<\/span> await<\/span> response<\/span>.<\/span>arrayBuffer<\/span>();<\/span>\r\n\r\n  \/\/ ...<\/span>\r\n\r\n  \/\/ AudioWorkletNode \u3092\u69cb\u7bc9<\/span>\r\n  const<\/span> node<\/span> =<\/span> new<\/span> ProcessorNode<\/span>(<\/span>audioContext<\/span>,<\/span> \"<\/span>Processor<\/span>\"<\/span>);<\/span>\r\n  \r\n  \/\/ node \u306b WASM \u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u30d0\u30a4\u30c8\u5217\u3092\u6e21\u3057\u3066\u521d\u671f\u5316<\/span>\r\n  node<\/span>.<\/span>init<\/span>(<\/span>wasmBytes<\/span>);<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
        Rust \u5074\u306e\u51e6\u7406\u3068\u30aa\u30fc\u30c7\u30a3\u30aa\u30c7\u30fc\u30bf\u306e\u53d7\u3051\u6e21\u3057<\/h3>\n
        Rust \u5074\u3067\u4fe1\u53f7\u51e6\u7406\u3092\u884c\u3046\u305f\u3081\u306e\u30b3\u30fc\u30c9\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
        #[wasm_bindgen]<\/span>\r\npub<\/span> struct<\/span> WasmProcessor<\/span> {<\/span>\r\n  sample_rate<\/span>:<\/span> usize<\/span>,<\/span>\r\n  block_size<\/span>:<\/span> usize<\/span>,<\/span>\r\n  fft<\/span>:<\/span> Arc<\/span><<\/span>dyn<\/span> Fft<\/span><<\/span>f32<\/span>>><\/span>,<\/span>\r\n  \/\/...<\/span>\r\n}<\/span>\r\n\r\n#[wasm_bindgen]<\/span>\r\nimpl<\/span> WasmProcessor<\/span> {<\/span>\r\n  pub<\/span> fn<\/span> new<\/span>(<\/span>sample_rate<\/span>:<\/span> usize<\/span>,<\/span> block_size<\/span>:<\/span> usize<\/span>)<\/span> -><\/span> WasmProcessor<\/span> {<\/span>\r\n    \/\/ ...<\/span>\r\n  }<\/span>\r\n\r\n \/\/ buffer \u3067\u53d7\u3051\u53d6\u3063\u305f\u4fe1\u53f7\u3092\u52a0\u5de5\u3057\u3066\u4e0a\u66f8\u304d\u3059\u308b\u3053\u3068\u3067\u3001\u97f3\u58f0\u3092\u5909\u5316\u3055\u305b\u308b\u3002<\/span>\r\n \/\/ levels \u306f\u9577\u30552\u306e\u914d\u5217\u306b\u306a\u3063\u3066\u3044\u3066\u3001\u4fe1\u53f7\u51e6\u7406\u3059\u308b\u524d\u3068\u5f8c\u306e\u97f3\u91cf\u3092\u305d\u308c\u305e\u308c\u66f8\u304d\u8fbc\u3093\u3067<\/span>\r\n \/\/ JavaScript \u5074\u306b\u8fd4\u3059\u3002<\/span>\r\n pub<\/span> fn<\/span> process<\/span>(<\/span>&<\/span>mut<\/span> self<\/span>,<\/span> buffer<\/span>:<\/span> &<\/span>mut<\/span> [<\/span>f32<\/span>],<\/span> length<\/span>:<\/span> usize<\/span>,<\/span> levels<\/span>:<\/span> &<\/span>mut<\/span> [<\/span>f32<\/span>])<\/span> {<\/span>\r\n    \/\/ ...<\/span>\r\n  }<\/span>\r\n<\/code><\/pre>\n
        \u4e0a\u8a18\u306e\u30b9\u30cb\u30da\u30c3\u30c8\u306b\u3042\u308b\u3088\u3046\u306b\u3001 #[wasm_bindgen] \u5c5e\u6027\u3092\u4ed8\u3051\u305f\u30af\u30e9\u30b9\u3084\u95a2\u6570\u304c JavaScript \u304b\u3089\u5229\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
        \u3053\u306e\u30af\u30e9\u30b9\u3092 AudioWorkletProcessor \u304b\u3089\u547c\u3073\u51fa\u3059\u306e\u306f\u3001\u5358\u306b JavaScript \u306e\u30af\u30e9\u30b9\u3092\u547c\u3073\u51fa\u3059\u306e\u3068\u540c\u3058\u3088\u3046\u306b\u66f8\u3051\u307e\u3059\u3002<\/p>\n
        import<\/span> \"<\/span>.\/TextEncoder.js<\/span>\"<\/span>;<\/span>\r\nimport<\/span> init<\/span>,<\/span> {<\/span> WasmProcessor<\/span> }<\/span> from<\/span> \"<\/span>.\/wasm-audio\/wasm_audio.js<\/span>\"<\/span>;<\/span>\r\n\r\nclass<\/span> Processor<\/span> extends<\/span> AudioWorkletProcessor<\/span> {<\/span>\r\n  onmessage<\/span>(<\/span>event<\/span>)<\/span> {<\/span>\r\n    \/\/ Node \u5074\u304b\u3089\u521d\u671f\u5316\u51e6\u7406\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u98db\u3093\u3067\u304d\u305f\u3068\u304d<\/span>\r\n    if <\/span>(<\/span>event<\/span>.<\/span>type<\/span> ===<\/span> '<\/span>init-processor<\/span>'<\/span>)<\/span> {<\/span>\r\n      const<\/span> {<\/span> sampleRate<\/span>,<\/span> blockSize<\/span> }<\/span> =<\/span> event<\/span>;<\/span>\r\n\r\n      \/\/ Store this because we use it later to process when we have enough recorded<\/span>\r\n      \/\/ audio samples for our first analysis.<\/span>\r\n      this<\/span>.<\/span>blockSize<\/span> =<\/span> blockSize<\/span>;<\/span>\r\n\r\n      \/\/ Rust \u5074\u3067\u5b9a\u7fa9\u3057\u305f WasmProcessor \u30af\u30e9\u30b9\u3092\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3059\u308b<\/span>\r\n      this<\/span>.<\/span>processor<\/span> =<\/span> WasmProcessor<\/span>.<\/span>new<\/span>(<\/span>sampleRate<\/span>,<\/span> blockSize<\/span>);<\/span>\r\n  }<\/span>\r\n\r\n  process<\/span>(<\/span>inputs<\/span>,<\/span> outputs<\/span>)<\/span> {<\/span>\r\n    if<\/span>(<\/span>!<\/span>this<\/span>.<\/span>processor<\/span>)<\/span> {<\/span>\r\n      return<\/span> true<\/span>;<\/span>\r\n    }<\/span>\r\n\r\n    \/\/ \u30d0\u30c3\u30d5\u30a1\u306e\u6e96\u5099\u306a\u3069<\/span>\r\n\r\n    \/\/ WasmProcessor \u306e process() \u95a2\u6570\u306e\u547c\u3073\u51fa\u3057<\/span>\r\n    this<\/span>.<\/span>processor<\/span>.<\/span>process<\/span>(<\/span>this<\/span>.<\/span>processBuffer<\/span>,<\/span> len<\/span>,<\/span> this<\/span>.<\/span>levels<\/span>);<\/span>\r\n\r\n    \/\/ levels \u306b\u30ec\u30d9\u30eb\u30e1\u30fc\u30bf\u7528\u306e\u97f3\u91cf\u30c7\u30fc\u30bf\u304c\u66f8\u304d\u8fbc\u307e\u308c\u308b\u306e\u3067\u305d\u308c\u3092 UI \u5074\u306b\u8fd4\u3059\u3002<\/span>\r\n    this<\/span>.<\/span>port<\/span>.<\/span>postMessage<\/span>({<\/span>\r\n      type<\/span>:<\/span> \"<\/span>update-levels<\/span>\"<\/span>,<\/span>\r\n      data<\/span>:<\/span> {<\/span>\r\n        inputLevel<\/span>:<\/span> this<\/span>.<\/span>levels<\/span>[<\/span>0<\/span>],<\/span>\r\n        outputLevel<\/span>:<\/span> this<\/span>.<\/span>levels<\/span>[<\/span>1<\/span>],<\/span>\r\n      }<\/span>\r\n    });<\/span>\r\n\r\n    \/\/ process() \u95a2\u6570\u3067\u51e6\u7406\u3055\u308c\u305f\u30aa\u30fc\u30c7\u30a3\u30aa\u30c7\u30fc\u30bf\u3092 output \u306b\u66f8\u304d\u8fbc\u3080\u3002<\/span>\r\n    \/\/ \u3053\u308c\u306b\u3088\u3063\u3066\u4e0b\u6d41\u306b\u30aa\u30fc\u30c7\u30a3\u30aa\u30c7\u30fc\u30bf\u304c\u6d41\u308c\u308b\u3002<\/span>\r\n    for <\/span>(<\/span>let<\/span> i<\/span> =<\/span> 0<\/span>;<\/span> i<\/span> <<\/span> len<\/span>;<\/span> ++<\/span>i<\/span>)<\/span> {<\/span>\r\n      const<\/span> sample<\/span> =<\/span> this<\/span>.<\/span>processBuffer<\/span>[<\/span>i<\/span>];<\/span>\r\n      output<\/span>[<\/span>0<\/span>][<\/span>0<\/span>][<\/span>i<\/span>]<\/span> =<\/span> sample<\/span>;<\/span>\r\n      output<\/span>[<\/span>0<\/span>][<\/span>1<\/span>][<\/span>i<\/span>]<\/span> =<\/span> sample<\/span>;<\/span>\r\n    }<\/span>\r\n\r\n    return<\/span> true<\/span>;<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
        \u30dc\u30a4\u30b9\u30c1\u30a7\u30f3\u30b8\u30e3\u30fc\u51e6\u7406\u306e\u6982\u8981<\/h2>\n
        \u30dc\u30a4\u30b9\u30c1\u30a7\u30f3\u30b8\u30e3\u30fc\u306e\u5b9f\u969b\u306e\u4fe1\u53f7\u51e6\u7406\u306b\u3064\u3044\u3066\u306f\u3001\u6982\u8981\u3060\u3051\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n
          \n
        • \n
            \u5165\u529b\u3057\u305f\u97f3\u58f0\u4fe1\u53f7\u3092 STFT \u3059\u308b — (A)<\/ul>\n<\/li>\n<\/ul>\n
             <\/p>\n
              \n
            • \n
                STFT \u3057\u305f\u4fe1\u53f7\u3092\u5bfe\u6570\u632f\u5e45\u30b9\u30da\u30af\u30c8\u30eb\u306b\u3057\u3066\u304b\u3089 ISTFT \u3057\u3066\u3001\u30b1\u30d7\u30b9\u30c8\u30e9\u30e0\u3092\u53d6\u5f97\u3059\u308b\u3002<\/ul>\n<\/li>\n<\/ul>\n
                 <\/p>\n
                  \n
                • \n
                    \u30b1\u30d7\u30b9\u30c8\u30e9\u30e0\u306b\u5bfe\u3057\u3066\u4f4e\u6b21\u306e\u4fe1\u53f7\u3060\u3051\u3092\u53d6\u308a\u51fa\u3057\u3001\u305d\u308c\u3092 FFT \u3059\u308b\u3053\u3068\u3067\u30b9\u30da\u30af\u30c8\u30eb\u5305\u7d61\u3092\u62bd\u51fa\u3059\u308b\u3002 — (B)<\/ul>\n<\/li>\n<\/ul>\n
                     <\/p>\n
                      \n
                    • \n
                        (B) \u306b\u5bfe\u3057\u3066 Formant Shift \u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u3082\u3068\u306b\u30b9\u30da\u30af\u30c8\u30eb\u5305\u7d61\u306e\u4f38\u7e2e\u51e6\u7406\u3092\u884c\u3046\u3002 — (C)<\/ul>\n<\/li>\n<\/ul>\n
                         <\/p>\n
                          \n
                        • \n
                            (A) \u306e\u4fe1\u53f7\u306b\u5bfe\u3057\u3066 Pitch Shift \u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u3082\u3068\u306b\u30d5\u30a7\u30fc\u30b9\u30dc\u30b3\u30fc\u30c0\u30fc\u51e6\u7406\u3092\u884c\u3063\u3066\u30d4\u30c3\u30c1\u30b7\u30d5\u30c8\u3059\u308b\u3002<\/ul>\n<\/li>\n<\/ul>\n
                             <\/p>\n
                              \u30d4\u30c3\u30c1\u30b7\u30d5\u30c8\u3057\u305f\u4fe1\u53f7\u306b\u5bfe\u3057\u3066 (C) \u306e\u30b9\u30da\u30af\u30c8\u30eb\u5305\u7d61\u3092\u9069\u7528\u3059\u308b<\/ul>\n
                              \u3053\u306e\u5b9f\u88c5\u306b\u3064\u3044\u3066\u306f https:\/\/shop.cqpub.co.jp\/detail\/2539\/ \u3092\u53c2\u8003\u306b\u5b9f\u88c5\u3057\u307e\u3057\u305f\u3002<\/p>\n
                              \u307e\u3068\u3081<\/h2>\n
                              \u4eca\u56de\u306f\u30d6\u30e9\u30a6\u30b6\u4e0a\u3067\u97f3\u58f0\u3092\u52a0\u5de5\u3059\u308b\u51e6\u7406\u3092 Rust \u3067\u66f8\u304f\u6280\u8853\u306b\u3064\u3044\u3066\u7d39\u4ecb\u3057\u307e\u3057\u305f\u3002<\/p>\n
                              \u682a\u5f0f\u4f1a\u793eLabBase \u3067\u306f\u97f3\u58f0\u4fe1\u53f7\u51e6\u7406\u306f\u3084\u3063\u3066\u3044\u306a\u3044\u3067\u3059\u304c Rust \u3084 TypeScript \u306f\u3044\u3063\u3071\u3044\u4f7f\u3063\u3066\u3044\u307e\u3059\uff01
                              \n\u3053\u308c\u3089\u306e\u8a00\u8a9e\u306b\u8208\u5473\u304c\u3042\u308b\u4eba\u306f\u305c\u3072 LabBase \u3078\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
                              \u306f\u3058\u3081\u306b \u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001 WebAudio \u3068 Rust \u3067\u30dc\u30a4\u30b9\u30c1\u30a7\u30f3\u30b8\u30e3\u30fc\u306e\u30a8\u30d5\u30a7\u30af\u30c8\u3092\u4f5c\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u7d39 […]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-45645","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n- Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/45645-2\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:description\" content=\"\u306f\u3058\u3081\u306b \u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001 WebAudio \u3068 Rust \u3067\u30dc\u30a4\u30b9\u30c1\u30a7\u30f3\u30b8\u30e3\u30fc\u306e\u30a8\u30d5\u30a7\u30af\u30c8\u3092\u4f5c\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u7d39 […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/45645-2\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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