PlaybackParameters
data class PlaybackParameters(val times: PlaybackTimes = 1.playbackTimes, val startTime: TimeSpan = 0.seconds, val bufferTime: TimeSpan = 0.16.seconds, val volume: Double = 1.0, val pitch: Double = 1.0, val panning: Double = 0.0, val onCancel: () -> Unit? = null, val onFinish: () -> Unit? = null) : ReadonlySoundProps