播放生成的声音 [英] play back generated sounds

问题描述

我想捕获音频（在我的情况下来自 getUserMedia ）并播放它。我能够将一堆AudioBuffers推送到这样的数组：

I want to capture audio (in my case from getUserMedia) and play it back. I'm able to push a bunch of AudioBuffers to an array like so:

var recorder = audio_context.createJavaScriptNode(256, 2, 2);
recorder.onaudioprocess = function(e) {
  recorded.push(e.inputBuffer.getChannelData(0));
  // or just:
  // recorded.push(e.inputBuffer);
};
recorder.connect(audio_context.destination);

但是我如何在记录的 array？

But then how do I play the buffers in the recorded array?

将这些合并到一个缓冲区并用 createBufferSource 进行播放的方法？

A way to merge these into one buffer and play it with createBufferSource?

一个完全不同的方法？

推荐答案

完成音频录制后，您应该能够执行以下操作：

Once you're done recording the audio, you should be able to do the following:

var bufferIndex = 0;
recorder.onaudioprocess = function (e) {
  var outputData = e.outputbuffer.getChannelData(0);
  var recordedData = recorded[bufferIndex];
  for (var i = 0; i < recordedData.length; i++) {
    outputData[i] = recordedData[i];
  });
  bufferIndex++;
}

（你可以更简单/更清洁;这只是为了说明目的）

(You can probably make that simpler/cleaner; this was just for illustration purposes)

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