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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: (... *

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 ... *

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... *

Peak/Notch Filter Design

by ** | **

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

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... *

Max/Min of continuous signal

by **Detlef _A** in **Comp.DSP** on Nov 27 2014

*Group,
I sample a bandlimited signal satisfying Nyquist. How can I get the
maximum/minimum of the... *

Transform filter type

by **Max** in **Comp.DSP** on Nov 27 2014

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

impulse response

by **mite_learner** in **Comp.DSP** on Nov 27 2014

*Hi,
I am using MATLAB. How can I compute the impulse response of a system that
involves future ou... *

levinson durbin

by **22139** in **Comp.DSP** on Nov 26 2014

*I was trying to implement Linear Predictive Coding in Matlab. The program I
wrote for Levinson Algor... *

63Hz bandpass filter to remove dithering and other noise

by **Vicsafric** in **Comp.DSP** on Nov 26 2014

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

Single Sideband modulation using QAM64

by **ipruzhinin** in **Comp.DSP** on Nov 26 2014

*Hi All!
It's clear how to build system when some real signal (1st real sequence)
goes to input of... *

Range and DOA estimation of Broadband Nearfield Sources

by **satish1284** in **Comp.DSP** on Nov 24 2014

*Hello All,
I am currently working on Range and DOA estimation of broadband near field
sources.If ... *

Interesting question on sci.engr.control

by **Tim Wescott** in **Comp.DSP** on Nov 24 2014

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

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?
... *

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... *

A Pragmatic Introduction to Signal Processing

Tom O'Haver

Signal Processing for Communications

Paolo Prandoni

Introduction to Real-Time Digital Signal Processing

Sen M. Kuo

C++ Tutorial

Juan Soulié

Complex Digital Signal Processing in Telecommunications

Zlatka Nikolova

Algorithms for Efficient Computation of Convolution

Karas Pavel

Computing FFT Twiddle Factors

Rick Lyons

Digital Signal Processor Fundamentals and System Design

M.E. Angoletta

Understanding the 'Phasing Method' of Single Sideband Demodulation

Rick Lyons

A Quadrature Signals Tutorial: Complex, But Not Complicated

Rick Lyons