- iOS 4.0+
- macOS 10.2+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 2.0+
Points to a structure initialized by a prior call to the FFT setup data function,
v. The value supplied as parameter
DSP _create _fftsetup
Log2nof the earlier call to the setup function must equal or exceed the value supplied as parameter
Log2Nof this transform function.
Complex input/output vector where multiple signals are concatenated.
Stride between elements in
C. The value of
ICshould be 1 for best performance.
The number of elements between the first element of one input signal and the first element of the next (which is also the length of each input signal, measured in elements).
The base 2 exponent of the number of elements to process in a single input signal. For example, to process 512 elements, specify 9 for parameter
The number of input signals.
The function performs discrete Fourier transforms on multiple signals using a single call. They will work for input signals of 4 points or greater. Each of the input signals processed by a given call must have the same length and address stride.
The functions compute in-place real discrete Fourier transforms of the input signals, either from the time domain to the frequency domain (forward) or from the frequency domain to the time domain (inverse).