Source
WebAudioApiSoundChannel(WebAudioApiSound webAudioApiSound,
num startTime, num duration, bool loop,
SoundTransform soundTransform) {
if (soundTransform == null) soundTransform = new SoundTransform();
_webAudioApiSound = webAudioApiSound;
_startTime = startTime.toDouble();
_duration = duration.toDouble();
_soundTransform = soundTransform;
_loop = loop;
_webAudioApiMixer = new WebAudioApiMixer(SoundMixer._webAudioApiMixer.inputNode);
_webAudioApiMixer.applySoundTransform(_soundTransform);
this.paused = false;
}