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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... *

magnitude first then filter

by **cmbeck_2008** in **Comp.DSP** on Oct 30 2014

*In order to reduce the micro requirement I would prefer to first calculate
the magnitude from 3 x ac... *

Minimal DSP for video transcoding

by **Xata** in **Comp.DSP** on Oct 30 2014

*Hello. I am new to DSP, even more - i am not even in DSP theme at the
moment.
Problem is - i need t... *

Gibbs

by in **Comp.DSP** on Oct 30 2014

*So you model a square wave by the sum of sine waves. Suppose you take 5 or =
6 and get the classic ... *

Newbee question: FFT to total signal power

by **Cranisch** in **Comp.DSP** on Oct 30 2014

*Hello everyone,
I have a maybe quite easy question but I got stuck there.
So hopefully you can h... *

OT, plea for money, but worthwhile IMHO

by **Tim Wescott** in **Comp.DSP** on Oct 29 2014

*If you want to be part of something high (as opposed to big):
*

Inertial Navigation

by in **Comp.DSP** on Oct 29 2014

*I suppose we could talk Kalman filters, but no, something more practical.
When we sent to the moo... *

carrier detection

by **Lanarcam** in **Comp.DSP** on Oct 28 2014

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

Calculating magnitude of FFT result

by **Robd** in **Comp.DSP** on Oct 28 2014

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

Linear phase vs Min. Phase

by **Max** in **Comp.DSP** on Oct 24 2014

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

Math History

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

*Who was it who figured out that
integral 1/(x^2 + 1) = arctan x
?
And how long did it take ... *

C++ Tutorial

Juan Soulié

Signal Processing for Communications

Paolo Prandoni

A Pragmatic Introduction to Signal Processing

Tom O'Haver

A Quadrature Signals Tutorial: Complex, But Not Complicated

Rick Lyons

Computing FFT Twiddle Factors

Rick Lyons

Introduction to Real-Time Digital Signal Processing

Sen M. Kuo

Complex Digital Signal Processing in Telecommunications

Zlatka Nikolova

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