Instance Method


Sets the parameter’s value, avoiding redundant notifications to the originator.


- (void)setValue:(AUValue)value originator:(AUParameterObserverToken)originator;



The parameter’s new value.


The originator of the change in value. This token allows for observer management to avoid notification callback loops.

See Also

Managing Parameter Values


The parameter’s current value.

- setValue:originator:atHostTime:

Sets the parameter’s value, preserving the host time of the gesture that initiated the change.

- stringFromValue:

Gets the string representation of a parameter value.

- valueFromString:

Converts a string into a parameter value.

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