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AVR UC3 Series Software Framework: DSPLib - Twiddle factors generator for Scilab.
Copyright © 2007 Atmel Corporation
Introduction
This script generates a table of twiddle factors you can directly use with the complex FFT functions.
Usage
You can modify two parameters:
- N_TWIDDLE_FACTORS: to specify the maximum length of the FFT you want to use with this table.
- BITS: the number of bits of a data (16 or 32).
Then when you launch the script, it will generate a C formatted constant table you can directly paste into the dsp16_twiddle_factors.h or dsp32_twiddle_factors.h file.
- Script sources descriptions:
- Directory: [ DSPLIB ]/UTILS/SCRIPTS/TWIDDLE_FACTORS_GENERATOR/
- Concerned file: tf_gen.sce
- Language: Scilab's proprietary language