Software for Telecoms & Audio
Noise Generator DSP C Code
this routine generates signed random noise samples having a Gaussian distribution.
The code is based on a pseudo-random generator which repeats every ~2x10^9
samples. The generator output is converted into samples having Gausssian
Probability Density Function (PDF) and Cumulative Distribution Function
(CDF) distributions. The crest factor, i.e. the peak signal sample relative
to the Root-Mean-Square (RMS) value, is 6.15. Thus for a set RMS value
(by assembler equate) of 4096 decimal, the peak signal obtainable is ~±25,000.
Full performance results are available.
- #example figures from compiling for the TI TMS320C5000(C55x) DSP processor at 8kHz sampling
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