Overview
Forward FFT of fractional data
Discussion
Computes the fast Fourier transform of a fractional input signal yielding a complex half spectrum. The blockSize, N, of the input must be a power of 2 in the range [2...65536]. The output pin is complex with a blockSize of N/2+1 complex samples. The output pin contains the complex transform data for FFT samples k=0, 1, ..., N/2. The DC (k=0) and Nyquist (k=N/2) samples always have an imaginary component of 0.
Type Definition
| Code Block |
|---|
typedef struct _ModuleFftFract32
{
ModuleInstanceDescriptor instance; // Common Audio Weaver module instance structure
} ModuleFftFract32Class; |
Pins
Input Pins
Name: in
Description: Complex input
...
Sample rate range: Unrestricted
Complex support: Real
Output Pins
Name: out
Description: Complex output
Data type: fract32
Scratch Pins
Channel count: 1
Block size: 8
Sample rate: 48000
MATLAB Usage
File Name: fft_fract32_module.m
...