在Safari和Edge中替代audioContext.copyToChannel()

问题描述

Safari和Edge都不支持audioContext.copyToChannel()函数，以使用自定义内容填充audioBuffer.还有其他方法吗?

Both Safari and Edge do not support the audioContext.copyToChannel() function to populate an audioBuffer with custom content. Is there any other way to do it?

就我而言，我想创建一个脉冲响应，用该响应填充一个缓冲区，然后用该缓冲区卷积一些声音.对于Chrome和Firefox，此方法有效:

In my case, I want to create an impulse response, populate a buffer with that response and convolve some sound with that buffer. For Chrome and Firefox this works:

buffer = audioCtx.createBuffer(numOfChannels, 1, sampleRate);
buffer.copyToChannel(impulseResponse, 0);
buffer.copyToChannel(impulseResponse, 1);
convolverNode.buffer = buffer;

推荐答案

您可以只在AudioBuffer上使用getChannelData(channel)，然后获得一个常规的Float32Array，可以随意修改.也许您想看看set方法?

You can just use getChannelData(channel) on the AudioBuffer, you then get a regular Float32Array than you can modify at will. Maybe you want to look at the set method ?

copyToChannel在那里可以优化缓冲区副本. -long-channelNumber-unsigned-long-startInChannel"rel =" noreferrer>规范(请参见下面的绿色小框.

copyToChannel is there to optimize buffer copies , as noted in the spec (see the little green box below.

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