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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

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

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...

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: (...

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...

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...

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

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...

Peak/Notch Filter Design
by |
This function will generate the coefficients for a single IIR biquad that is a "peak/notch" design.&...

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DSP Discussion Groups

Re: Big K - laying the ghost to rest
by Johannes Bauer in Comp.DSP on Feb 28 2015
On 26.02.2015 11:58, gareth wrote: > Although not posting here for some years, I have nevertheless... Re: Big K - laying the ghost to rest

Re: The Definite Integral of a Complex Exponential
by Donnacha Daly in Comp.DSP on Feb 28 2015
Thanks to all of you for your answers, they indeed solved my problem. In particular these were help... Re: The Definite Integral of a Complex Exponential

-122 dB on a CD - "narrow band samples".
by Les Cargill in Comp.DSP on Feb 27 2015
Somebody on another froup posted an analysis of a CD. There were what appeared to be digital zero... -122 dB on a CD -

Come on guys! CNN is expecting this recording, but it needs to be restored first...
by Ramon F Herrera in Comp.DSP on Feb 27 2015
On 2/25/2015 2:42 PM, Ramon F Herrera wrote: > > http://jfkfacts.org/assassination/news/reporter... Come on guys! CNN is expecting this recording, but it needs to be restored first...

etc etc etc :-( Big K's ghost, hopefully the finalisedversion!
by gareth in Comp.DSP on Feb 27 2015
This has been edited to resolve that the Unit Steps were the wrong way around ... -----ooooo----... etc etc etc :-(  Big K's ghost, hopefully the finalisedversion!

The derivation of the representation of sampling by the use of the delta function
by gareth in Comp.DSP on Feb 26 2015
Further to Robert's peer review, and the then swapping around of the multiply / divide words. hopef... The derivation of the representation of sampling by the use of the delta function

Following peer review - the derivation of the representation of sampling by Diracian Delta functions
by gareth in Comp.DSP on Feb 26 2015
Revised after peer review, approached with a little less haste So... Sampling with a period ... Following peer review - the derivation of the representation of sampling by Diracian Delta functions

GMSK modulation and its PSD
by in Comp.DSP on Feb 25 2015
Hi all I'm working on GMSK modem simulation in MATLAB. I'm almost done with the modulation part ... GMSK modulation and its PSD

compute a cepstrum
by pm200107 in Comp.DSP on Feb 25 2015
Hi I am trying to compute the cepstrum (complex) of a real signal. I am doing this because I woul... compute a cepstrum

hay, can any of you IEEE guys get me a copy of this paper?
by robert bristow-johnson in Comp.DSP on Feb 25 2015
Brown, John L. Sampling bandlimited periodic signals - an application of the DFT ... hay, can any of you IEEE guys get me a copy of this paper?

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