Reverse an audioBuffer

reverse-buffer.js

export default function reverseBuffer(buffer, context) {
  const reverse = context.createBuffer(
    buffer.numberOfChannels,
    buffer.length,
    buffer.sampleRate
  );

  for (let channels = 0; channels < buffer.numberOfChannels; channels++) {
    const dest = reverse.getChannelData(channels);
    const src = buffer.getChannelData(channels);

    for (let sampleFrames = 0; sampleFrames < buffer.length; sampleFrames++) {
      dest[sampleFrames] = src[buffer.length - sampleFrames];
    }
  }

  return reverse;
}