iOS Developer Library

Developer

AVFoundation Framework Reference AVCaptureAudioChannel Class Reference

Options
Deployment Target:

On This Page
Language:

AVCaptureAudioChannel

You use an AVCaptureAudioChannel to monitor the average and peak power levels in an audio channel in a capture connection (see AVCaptureConnection). More...

Inheritance


Conforms To


Import Statement


import AVFoundation @import AVFoundation;

Availability


Available in iOS 4.0 and later.
  • The instantaneous average power level, in dB. (read-only)

    Declaration

    Swift

    var averagePowerLevel: Float { get }

    Objective-C

    @property(nonatomic, readonly) float averagePowerLevel

    Discussion

    This property is not key-value observable.

    Import Statement

    import AVFoundation

    Availability

    Available in iOS 4.0 and later.

  • The peak hold power level, in dB. (read-only)

    Declaration

    Swift

    var peakHoldLevel: Float { get }

    Objective-C

    @property(nonatomic, readonly) float peakHoldLevel

    Discussion

    This property is not key-value observable.

    Import Statement

    import AVFoundation

    Availability

    Available in iOS 4.0 and later.