Resets the filter state of a single-precision multichannel biquad IIR filter object.
- iOS 7.0+
- macOS 10.9+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 2.0+
The filter state object whose state you wish to reset.
setup object must be a valid object, previously initialized by a call to the
v function. Upon return, all internal state is reset to the values it had when it was first initialized.