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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: (...

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

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

Constellation Diagram for Binary QPSK
by Senthilkumar R |
This program is used to plot a constellation diagram for QPSK...

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...

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...

More Code Snippets...

DSP Discussion Groups

Spectral Purity Measurement
by rickman in Comp.DSP on Dec 22 2014
I want to analyze the output of a DDS circuit and am wondering if an FFT is the best way to do thi... Spectral Purity Measurement

FFTW3 Split r2c in place transform - what address for imaginary output
by in Comp.DSP on Dec 20 2014
Hi, I need to understand the function fftw_plan_guru_split_dft_r2c(). I would l= ike to know wha... FFTW3 Split r2c in place transform - what address for imaginary output

200kHz to 30MHz phase detection stratergies.
by in Comp.DSP on Dec 19 2014
hey guys, I am currently dealing with sinusoidal signals ranging between 200k and 30M= Hz and ha... 200kHz to 30MHz phase detection stratergies.

Anti-Doppler
by Max in Comp.DSP on Dec 18 2014
The 'Doppler' thread got me wondering: How would you undo doppler effects to a signal without gener... Anti-Doppler

Holomorphing: 2D-image processing as 1D complex DSP!
by in Comp.DSP on Dec 17 2014
One word, alone says it all "Holomorphic functions". Here, it's just simple= polynomial "curve"-fi... Holomorphing: 2D-image processing as 1D complex DSP!

Repeated Spectra
by in Comp.DSP on Dec 16 2014
What does it mean that spectra of a sampled signal is repeated at integer multiples of sampling freq... Repeated Spectra

OT: Merry Christmas
by Rick Lyons in Comp.DSP on Dec 14 2014
Hi Guys, It's that time again. Here's wishin' all of you a very Merry Christmas and a Happy ... OT:  Merry Christmas

Doppler effect on Baud Rate
by dsp student in Comp.DSP on Dec 14 2014
I'm having a hard time wrapping my head around doppler and how it affects a= digital communication... Doppler effect on Baud Rate

QPSK signal.
by AiDa in Comp.DSP on Dec 11 2014
Hi,guys. I research Doppler shift in QPSK signals.Methods to compensate Doppler shift I found durin... QPSK signal.

Question about Active Noise Cancellation
by in Comp.DSP on Dec 11 2014
Hello, I'm hoping the experienced folks in this newsgroup would be so kind so poin= t me to some... Question about Active Noise Cancellation

More Discussions...