A Boolean value that indicates whether the microphone’s sound level is being monitored.
- iOS 3.0–7.0Deprecated
- watchOS 3.0–2.0Deprecated
true, your application can read the
input property to monitor the sound level of the microphone. If
false, the value of the
input property is undefined. Default is
false. When your application doesn’t need to monitor the microphone, it should set this property to
false to improve performance.