How to Generate White Gaussian Noise

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by Matt Donadio White Gaussian Noise (WGN) is needed for DSP system testing or DSP system identification. Here are two methods for generating White Gaussian Noise. Both rely on having a good uniform random number generator. We will assume that … Continued

DSP on Wikipedia

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Links to Digital Signal Processing (DSP) pages on Wikipedia, organized by subject DSP Digital Signal Processing Sampling Aliasing Anti-aliasing filter Ideal sampler Nyquist frequency Nyquist rate Nyquist–Shannon sampling theorem Quantization Reconstruction filter Sample and hold Sampling rate Zero-order hold Data … Continued

comp dot dsp guy

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Subject: comp dot dsp guy Date: 21 May 1999 00:00:00 Newsgroups: comp.dsp A few months ago someone requested new lyrics to the song “American Pie” with a comp.dsp twist. Ever since then, I wanted to take a crack at it, … Continued

Cramer-Rao Bound

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by Peter Kootsookos From: Peter K. Subject: Re: crammer-rao bound Newsgroups: comp.dsp Date: 2001-01-20 11:31:54 PST I’m sittin’ at the Sun workstation Got a signal for elimination, mm-hm If I can we’ll all clap hands Rick ‘n’ Grant will do … Continued

DSP Trick: Dealing With Propagating Truncation Errors

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Subject: Dealing with propagating truncation errors From: Ole Wolf Date: 1999/05/26 Newsgroups: comp.dsp THIS WORK IS PLACED IN THE PUBLIC DOMAIN Name: Dealing with propagating truncation errors. Category: Algorithmic tricks. Application: When values are truncated, and the truncated values are … Continued

Miscellaneous Tricks

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Complex Downconverters for Signals at Fs/4 or 3Fs/4 Sinusoidal Tone Generator Fast Floating Point to Mu-Law Conversion Fixed-Point DC Blocking Filter with Noise-Shaping Dealing With Propagating Truncation Errors

A Little MLS (Maximum-Length Sequence) Tutorial

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by Robert Bristow-Johnson A Maximum-Length Sequence (MLS) has two different (but related) definitions: One is the driving function applied to the input of a linear time invariant (LTI) system: x[n] = X*(-1)^a[n] The other definition is simply the binary sequence, … Continued

Tricks

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One of the things that makes DSP so interesting is its wide variety of tricks, usually to reduce the processing required for a given operation. The right DSP trick can be a nugget of gold. Here, we provide a gold … Continued