setVolume(_:at:)
Sets the value of the audio volume starting at the specified time.
Declaration
func setVolume(_ volume: Float, at time: CMTime)Parameters
- volume:
The volume. The value must be between
0.0and1.0. - time:
The start time at which to set the volume.
Discussion
This method adds a volume ramp starting at time. This volume setting remains in effect until the end of the track unless you set a different volume level to start at a later time.