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Welcome to DSPRelated.com !

DSPRelated.com has been around since 1999 and has become over the years the most popular independent internet resource for Digital Signal Processing (DSP) engineers around the world.
You are invited to create an account with us (quick and free). Doing so will allow you to contribute to the the site by rating DSP books and DSP Internet resources, as well as participate to one or many DSP related discussion(s).

Most Popular DSP Code Snippets

Saving a Matlab figure to file using command-line
by |
Once again, this is another example that Matlab does weird things with its figure window.  If y...

Computing FFT Twiddle Factors
by Rick Lyons |
This text, figures, and code snippet are also available in downloadable PDF format Typical applic...

Discrete Haar Wavelet Transform
by |
See article at http://www.dsprelated.com/showabstract/3639.php for the theory....

Fitting Filters to Measured Amplitude Response Data Using invfreqz in Matlab
by Julius Orion Smith III |
In the 1980s I wrote the matlab function invfreqz that implements a fast (FFT-based) equation-error ...

Adding a Controlled Amount of Noise to a Noise-Free Signal
by Rick Lyons |
The following gives two snippets of Matlab code. The first snippet is a function whose inputs are: (...

Zero Crossing Counter
by |
In some DSP applications, it can be very helpful to know how many times your signal has crossed the ...

Echo Filter
by Miguel De Jesus |
An Audio Echo Filter is an FIR filter that repeats a sound after a given Delay attenuating the repet...

Computing the Nth Roots of a Number
by Rick Lyons |
In Matlab when we want to compute the square root of a number we use the 'sqrt()' command. For exa...

Generate ideal QPSK..64QAM symbol error rates (reference result)
by Markus Nentwig |
Calculates the symbol error rate of QPSK/16QAM/64QAM/256QAM/1024QAM modulation for additive white Ga...

Halfband Filter Design with Python/Scipy
by Christopher Felton |
The following code snippet is an example how to design a half band filter.  Half band filters a...

More Code Snippets...

DSP Discussion Groups

magnitude first then filter
by cmbeck_2008 in Comp.DSP on Oct 30 2014
In order to reduce the micro requirement I would prefer to first calculate the magnitude from 3 x ac... magnitude first then filter

Minimal DSP for video transcoding
by Xata in Comp.DSP on Oct 30 2014
Hello. I am new to DSP, even more - i am not even in DSP theme at the moment. Problem is - i need t... Minimal DSP for video transcoding

Gibbs
by in Comp.DSP on Oct 30 2014
So you model a square wave by the sum of sine waves. Suppose you take 5 or = 6 and get the classic ... Gibbs

Newbee question: FFT to total signal power
by Cranisch in Comp.DSP on Oct 30 2014
Hello everyone, I have a maybe quite easy question but I got stuck there. So hopefully you can h... Newbee question: FFT to total signal power

OT, plea for money, but worthwhile IMHO
by Tim Wescott in Comp.DSP on Oct 29 2014
If you want to be part of something high (as opposed to big): OT, plea for money, but worthwhile IMHO

Inertial Navigation
by in Comp.DSP on Oct 29 2014
I suppose we could talk Kalman filters, but no, something more practical. When we sent to the moo... Inertial Navigation

carrier detection
by Lanarcam in Comp.DSP on Oct 28 2014
I am not an expert in DSP, in fact I know some of the theory but I have never really written a DSP ... carrier detection

Calculating magnitude of FFT result
by Robd in Comp.DSP on Oct 28 2014
Hi, I hope this is the correct forum for such a question. I am writing some DSP code that runs on... Calculating magnitude of FFT result

Linear phase vs Min. Phase
by Max in Comp.DSP on Oct 24 2014
I noticed a post about 'pre-ring' here recently (couldn't find the thread again), and I'm trying to... Linear phase vs Min. Phase

Math History
by Tim Wescott in Comp.DSP on Oct 24 2014
Who was it who figured out that integral 1/(x^2 + 1) = arctan x ? And how long did it take ... Math History

More Discussions...