dart:web_audio

Метод copyFromChannel

Источник

void copyFromChannel(Float32List destination, int channelNumber,
    [int startInChannel]) {
  if (startInChannel != null) {
    _blink.BlinkAudioBuffer.instance.copyFromChannel_Callback_3_(
        this, destination, channelNumber, startInChannel);
    return;
  }
  _blink.BlinkAudioBuffer.instance
      .copyFromChannel_Callback_2_(this, destination, channelNumber);
  return;
}