Programmer Guide/SPU Reference/FFTPAR: Difference between revisions
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====FFTPAR - fft parameters==== | ====FFTPAR - fft parameters==== | ||
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|length of fast Fourier transform according to frame length (minimum power of 2 (= 2M ) greater/equal frame length) | |length of fast Fourier transform according to frame length (minimum power of 2 (= 2M ) greater/equal frame length) | ||
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Latest revision as of 17:14, 13 October 2015
FFTPAR - fft parameters
This module computes the basic FFT parameters (length and bandwidth) according to the signal parameters (frame length and sampling rate).
Usage:
FFTPAR X SR
Usage:
| X | frame length (number) or frame buffer (vector) |
| SR | sampling rate in Hz |
Outputs:
| LFFT | length of fast Fourier transform according to frame length (minimum power of 2 (= 2M ) greater/equal frame length) |
| DF | bandwidth (frequency resolution) of Fourier spectrum (= SR / LFFT) |
