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**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.

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A Complex Variable Detective Story – A Disconnect Between Theory and Implementation

**posted by** Rick Lyons

**Comments (0) |** The wheels go round and round, round and round ...

**posted by** Christopher Felton

**Comments (0) |** Spline interpolation

**posted by** Markus Nentwig

**Comments (2) |** DSP Related Math: Nice Animated GIFs

**posted by** Stephane Boucher

**Comments (1) |** Understanding and Preventing Overflow (I Had Too Much to Add Last Night)

**posted by** Jason Sachs

**Comments (0) |** Finding the Best Optimum

**posted by** Tim Wescott

**Comments (0) |** Polyphase Filters and Filterbanks

**posted by** Kyle Kastner

**Comments (8) |** Frequency-Domain Periodicity and the Discrete Fourier Transform

**posted by** Eric Jacobsen

**Comments (0) |** Engineering the Statistics

**posted by** Sami Al Dalahmah

**Comments (2) |** Implementing a full-duplex UART using the TMS320VC33 serial port

**posted by** Manuel Herrera

**Comments (2) |**

More Blogs...

More Blogs...

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: (... *

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... *

Peak/Notch Filter Design

by ** | **

*This function will generate the coefficients for a single IIR biquad that is a "peak/notch" design.&... *

CFP: 2015 IEEE Symposium on Computer Applications & Industrial Electronics (ISCAIE2015)

by **Ihsan** in **Comp.DSP** on Nov 23 2014

*The IEEE Malaysia Industrial Electronics & Industrial Applications Joint Ch=
apter is proud to anno... *

More Than 5300 Solution Manual in Mathematics, Physics, Calculus, Chemistry, Mechanics, Economic, Accounting, and Statistical

by in **Comp.DSP** on Nov 22 2014

*Here, You Can Find any Solution Manual.
NOTE : "THIS SERVICE IS NOT AVAILABLE FOR : CHINA, IND... *

FIR FILTER

by in **Comp.DSP** on Nov 21 2014

*How to design a fir filter in matlab just using the discrete equation? Can anyone give me a code?
... *

Transform filter type

by **Max** in **Comp.DSP** on Nov 21 2014

*I understand that it's possible to create a minimum phase FIR filter
by transforming a linear phase... *

POLQA (ITU P863)

by **Mauritz Jameson** in **Comp.DSP** on Nov 20 2014

*I downloaded the P.863 POLQA source code from the ITU website. As far
as I can see there is no guid... *

ADSP-BF538F SPI CONFIGURATION

by **"ket...@gmail.com [adsp]"** in **Analog Devices DSPs** on Nov 19 2014

*Hello guys,
I am working on configuring a slave device with ADSP-BF538F and I am able to generate... *

Interesting question on sci.engr.control

by **Tim Wescott** in **Comp.DSP** on Nov 19 2014

*Title says it -- there's an interesting and on-topic question on the
usually-moribund sci.engr.con... *

63Hz bandpass filter to remove dithering and other noise

by **Vicsafric** in **Comp.DSP** on Nov 18 2014

*I have very little DSP experience and knowledge. If you are irritated by
newbies and possible dumb q... *

Why can sidelobes not be filtered?

by **Bert RAM Aerts** in **Comp.DSP** on Nov 17 2014

*(I refer to the Matlab script below.)
I create an ADSL DMT symbol with only 3 tones.
tone1 and t... *

Dual FFT

by **Robd** in **Comp.DSP** on Nov 14 2014

*Hi,
The following link shows the ADC values of 1024 samples of a waveform and
512 bins of the cor... *

A Quadrature Signals Tutorial: Complex, But Not Complicated

Rick Lyons

Signal Processing for Communications

Paolo Prandoni

Algorithms for Efficient Computation of Convolution

Karas Pavel

Understanding the 'Phasing Method' of Single Sideband Demodulation

Rick Lyons

Digital Signal Processor Fundamentals and System Design

M.E. Angoletta

Computing FFT Twiddle Factors

Rick Lyons

Introduction to Real-Time Digital Signal Processing

Sen M. Kuo

C++ Tutorial

Juan Soulié

A Pragmatic Introduction to Signal Processing

Tom O'Haver

Complex Digital Signal Processing in Telecommunications

Zlatka Nikolova