Instance Property

preferredIOBufferDuration

The preferred I/O buffer duration, in seconds.

Declaration

var preferredIOBufferDuration: TimeInterval { get }

Discussion

The value of this property indicates the buffer duration selected using the setPreferredIOBufferDuration(_:) method.

To determine the actual buffer duration, query the ioBufferDuration property.

See Also

Working with Audio Device Settings

var inputGain: Float

The gain applied to inputs associated with the session.

var isInputGainSettable: Bool

A Boolean value that indicates whether the input gain can be set.

func setInputGain(Float)

Changes the input gain to the specified value.

var outputVolume: Float

The system wide output volume set by the user.

var inputLatency: TimeInterval

The latency for audio input, measured in seconds.

var outputLatency: TimeInterval

The latency for audio output, measured in seconds.

var sampleRate: Double

The current audio sample rate, in hertz.

var preferredSampleRate: Double

The preferred sample rate, in hertz.

func setPreferredSampleRate(Double)

Sets the preferred sample rate for input and output.

var ioBufferDuration: TimeInterval

The current I/O buffer duration, in seconds.

func setPreferredIOBufferDuration(TimeInterval)

Sets the preferred audio I/O buffer duration, in seconds.

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