Instance Method

updateMeters

Refreshes the average and peak power values for all channels of an audio player.

Declaration

- (void)updateMeters;

Discussion

To obtain current audio power values, you must call this method before calling averagePowerForChannel: or peakPowerForChannel:.

See Also

Using Audio Level Metering

meteringEnabled

A Boolean value that specifies the audio-level metering on/off state for the audio player.

- averagePowerForChannel:

Returns the average power for a given channel, in decibels, for the sound being played.

- peakPowerForChannel:

Returns the peak power for a given channel, in decibels, for the sound being played.

Beta Software

This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.

Learn more about using Apple's beta software