Web Audio API:停止播放所有预定的声音 [英] Web Audio API: Stop all scheduled sounds from playing

问题描述

所以我有一堆加载的音频样本，我在下面的代码中调用调度函数:

So i have a bunch of loaded audio samples that I am calling the schedule function with in the code below:

let audio;

function playChannel() {
    let audioStart = context.currentTime;
    let next = 0;

    for(let i = 0; i < 8; i++) {
        scheduler(audioStart, next);
        next++;
    }
}

这是音频调度器功能:

function scheduler(audioStart, index) {
    audio = context.createBufferSource(); 
    audio.buffer = audioSamples[index];  //array with all the loaded audio
    audio.connect(context.destination);  
    audio.start(audioStart + (audio.buffer.duration * index));
}

而且它工作正常并按预期播放预定的声音.

And it's working fine and plays the scheduled sounds as it should.

我应该如何停止/取消播放所有预定的声音?

How am I supposed to stop/cancel all the scheduled sounds from playing?

因为现在当我尝试调用 stop() 方法时，它只会停止播放最后一个预定的声音.

Because right now when I try to call the stop() method it will only stop the last scheduled sound from playing.

推荐答案

您需要跟踪您在调度程序中创建的 BufferSource 节点，由索引引用，然后遍历所有节点.例如:

You'll need to keep track of the BufferSource nodes you're creating inside scheduler, referenced by index, and then run through all of them. E.g.:

var sources = [];

function scheduler(audioStart, index) {
    audio = context.createBufferSource();
    sources[index] = audio; 
    audio.buffer = audioSamples[index];  //array with all the loaded audio
    audio.connect(context.destination);  
    audio.start(audioStart + (audio.buffer.duration * index));
}

function stopAll() {
    for(let i = 0; i < 8; i++)
        if (sources[i])
          sources[i].stop(0);
}

这篇关于Web Audio API:停止播放所有预定的声音的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！