javascript - HTML 5 : AudioContext AudioBuffer

我需要了解音频缓冲区的工作原理，并要执行以下顺序:Microphone-> Auto-> Processor-> Manual-> Buffer-> Auto-> Speakers。自动表示自动数据传输，手动表示我通过processor.onaudioprocess中的代码进行操作。所以我有以下代码:

navigator.getUserMedia = navigator.getUserMedia ||navigator.webkitGetUserMedia || navigator.mozGetUserMedia;
var audioContext;
var myAudioBuffer;
var microphone;
var speakers;
if (navigator.getUserMedia) {
    navigator.getUserMedia(
        {audio: true},
        function(stream) {
            audioContext = new AudioContext();
            //STEP 1 - we create buffer and its node
            speakers = audioContext.destination;
            myAudioBuffer = audioContext.createBuffer(1, 22050, 44100);
            var bufferNode = audioContext.createBufferSource();
            bufferNode.buffer = myAudioBuffer;
            bufferNode.connect(speakers);
            bufferNode.start();

            //STEP 2- we create microphone and processor
            microphone = audioContext.createMediaStreamSource(stream);
            var processor = (microphone.context.createScriptProcessor ||
                microphone.context.createJavaScriptNode).call(microphone.context,4096, 1, 1);
            processor.onaudioprocess = function(audioProcessingEvent) {
                var inputBuffer = audioProcessingEvent.inputBuffer;
                var inputData = inputBuffer.getChannelData(0); // we have only one channel
                var nowBuffering = myAudioBuffer.getChannelData(0);
                for (var sample = 0; sample < inputBuffer.length; sample++) {
                  nowBuffering[sample] = inputData[sample];
                }
            }

            microphone.connect(processor);

        },
        function() {
            console.log("Error 003.")
        });
}

但是，此代码不起作用。没有错误，只有沉默。我的错误在哪里？

最佳答案

您是否变得沉默(即您的进程正在被调用，但缓冲区为空)或什么都没有(即您的进程从未被调用)？

如果是后者，请尝试将脚本处理器连接到context.destination。即使您不使用输出，当前某些实现也需要该连接才能拉入数据。

关于javascript - HTML 5 : AudioContext AudioBuffer，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/38282611/