SoundTransform soundTransform

Source 

@override
SoundTransform get soundTransform {
  return _soundTransform;
}
void soundTransform=(SoundTransform value)

Source 

@override
set soundTransform(SoundTransform value) {
  _soundTransform = value != null ? value : new SoundTransform();
  _webAudioApiMixer.applySoundTransform(value);
}