SignalProcessing: Using Biquadratic Filter Functions

Last Revision:	Version 1.0, 2015-09-16 First public release.
Build Requirements:	Xcode 7.0, iOS 9.0 SDK
Runtime Requirements:	iOS 9.0

This sample illustrates the use of functions from the Accelerate/vDSP for filtering a stereo signal with cascading biquadratic IIR filters. The filter characteristics can be changed during the processing of the signal.