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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...

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... *

Linear phase vs Min. Phase

by **Max** in **Comp.DSP** on Oct 22 2014

*I noticed a post about 'pre-ring' here recently (couldn't find the
thread again), and I'm trying to... *

Anybody know about sound propagation in water? (sonar)

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

*If you were to drop a liquid contaminant into the water, would the sound refract due to the differen... *

Interpretting and using FFT outputs

by **rwjones** in **Comp.DSP** on Oct 22 2014

*Total newbie question...
I am working with a data set containing about 150,000 observations of pu... *

Calculating magnitude of FFT result

by **Robd** in **Comp.DSP** on Oct 21 2014

*Hi, I hope this is the correct forum for such a question.
I am writing some DSP code that runs on... *

linear system linear?

by **Peter Mairhofer** in **Comp.DSP** on Oct 20 2014

*Supposedly simple questions:
Is every "linear system" under all conditions linear? Of course, wha... *

ANN: HpW-Works Spectrum Analyzer & Wave Generator V3.4.1

by **HpW-Works** in **Comp.DSP** on Oct 19 2014

*
HpW-Works Version 3.4.1:
Supported MS Windows versions:
- MS Windows Vista, 32 & 64 bit with... *

Stolen from another group

by in **Comp.DSP** on Oct 18 2014

*Thought you may like it
Some scientists are actually attempting to determine whether reality is a... *

Filtering for a Inverter PWM Driver

by **Anand P. Paralkar** in **Comp.DSP** on Oct 17 2014

*Hi,
I am referring to two app. notes from Microchip -
1. PICREF-1
2. AN1279
These ap... *

carrier detection

by **Lanarcam** in **Comp.DSP** on Oct 17 2014

*I am not an expert in DSP, in fact I know some of the theory
but I have never really written a DSP ... *

CFP: 2014 IEEE Conference on Systems, Process and Control (ICSPC 2014) Deadline Extended to 31st October 2014

by **Ihsan** in **Comp.DSP** on Oct 17 2014

*===========================================================
CFP: 2014 IEEE Conference on Systems, P... *

Digital Signal Processor Fundamentals and System Design

M.E. Angoletta

Introduction to Real-Time Digital Signal Processing

Sen M. Kuo

Understanding the 'Phasing Method' of Single Sideband Demodulation

Rick Lyons

Computing FFT Twiddle Factors

Rick Lyons

A Pragmatic Introduction to Signal Processing

Tom O'Haver

C++ Tutorial

Juan Soulié

Algorithms for Efficient Computation of Convolution

Karas Pavel

Complex Digital Signal Processing in Telecommunications

Zlatka Nikolova

A Quadrature Signals Tutorial: Complex, But Not Complicated

Rick Lyons

Signal Processing for Communications

Paolo Prandoni