Optional Readonly BetadurationReadonly BetaidOptional Readonly BetarecipientReadonly BetasoundBeta World mutationDuration of the fade in seconds. Must be non-negative. Minimum value: 0
Volume to fade to. Must be non-negative. Minimum value: 0
Represents a handle to a sound that has been played. The handle is required to control the sound while it is playing (for example, to call
stop,setVolume,setPitch,fade, orseekTo). Infinitely-looping sounds (started withloop: -1) stop automatically when the lastSoundInstancereference is dropped; retain the handle for as long as the sound should keep playing.