javascript - 尝试加载缓冲区时Recorder.js WebAudio API TypeError问题

Question

我使用recorder.js来记录用户。然后，我尝试将录音的缓冲区发送到缓冲区列表，以便当我想一次播放所有声音时，该程序循环遍历缓冲区数组，并将它们变成源节点并进行播放。但是，它将引发TypeError。这是代码:

function layerRecording() {
  var newBuffer;
  rec.exportWAV(function(wav) {
  var url = window.URL.createObjectURL(wav);
  console.log(url);
  var getSound = new XMLHttpRequest(); // Load the Sound with XMLHttpRequest
  getSound.open("GET", url, true);
  getSound.responseType = "arraybuffer"; // Read as Binary Data
  getSound.onload = function() {
    context.decodeAudioData(getSound.response, function(buffer){
      newBuffer = buffer; // Decode the Audio Data and Store it in a Variable
    });
    buffers.push(newBuffer); //adds to the list of buffers
  }
  getSound.send(); // Send the Request and Load the File
});
}

//And then later on when I call this with buffers:
var playAll = function(bufferList) {
  	sourceList=[];
		for (var i=0; i<bufferList.length;i++){
			var currentSource = context.createBufferSource();
			console.log(i);
			currentSource.buffer = bufferList[i];
			currentSource.connect(context.destination); 
			sourceList[i]=currentSource;
		}
		for (var i=0; i<sourceList.length;i++){ 
			sourceList[i].start(0,startOffset);
		}
	}

我在录制的音频上遇到以下错误:
未捕获的TypeError:无法在“AudioBufferSourceNode”上设置“buffer”属性:提供的值不是“AudioBuffer”类型。

谢谢您的帮助

Answer 1

没关系，这是一个范围问题。只需将push语句移到encodeAudioData()内即可。哎呀