将音频缓冲区转换为数组缓冲区。

Question

我在互联网上寻找答案，但是没有找到任何资源。有人知道如何使用JavaScript将AudioBuffer对象转换为ArrayBuffer吗？这是我的当前尝试：

//Send audio data to websockets server
function callback(stream) {

var ws = new WebSocket("ws://localhost:8080");
ws.binaryType = 'arraybuffer';

var context = new webkitAudioContext();
var mediaStreamSource = context.createMediaStreamSource(stream);
console.log(mediaStreamSource);

var request = new XMLHttpRequest();
request.open('GET', 'http://s3.amazonaws.com/fldrMusic/01_-%20Fire%20Walker.mp3', true);    
request.responseType = 'arraybuffer'; 

console.log("Current 'request.response' value");  
console.log(request.response);

request.onload = function() {
  context.decodeAudioData(request.response, function(buffer){

    console.log("sent message");
    console.log(buffer); 
    ws.send(buffer);

    //Serialize javascript object
    console.log("sent message encoded");       
    var buff = Base64Binary.decodeArrayBuffer(buffer.toString());       
    console.log(buff);


  }, 
  function(buffer){ 
    alert("decode failed!");
  })
} 

request.send();
}//end 'callback' function

- random

Answer 1

AudioBuffer.getChannelData(channel_number);

你可以从 AudioBuffer.numberOfChannels 获取通道数。 编辑：
如需更多细节，您可以查看 AudioBuffer 和 getChannelData 方法的 MDN 文档。

- The Busy Wizard