Applies a single-precision multichannel biquad IIR filter.
SDKs
- iOS 7.0+
- macOS 10.9+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 2.0+
Framework
- Accelerate
Declaration
func vDSP_biquadm(_ __Setup: vParameters
__setupThe
vobject defining the filter to apply.DSP _biquadm _Setup __XAn array of pointers, each of which specifies an array of single-precision input data for a single channel.
__IXStride for
X(see Discussion below).__YAn array of pointers, each of which specifies an array to be filled with single-precision output data for a single channel.
__IYStride for
Y(see Discussion below).__NThe number of elements to filter.
Discussion
For each channel, this function applies a cascaded biquad filter to the input values specified by the channel’s pointer in X, and places the results in the array specified by the corresponding pointer in Y.
The data for multiple channels can be interleaved in memory. In this case the stride must be equal to the number of channels, and the pointers to consecutive channels must point to consecutive locations in memory.
The state contained in the setup object is updated upon return.