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Tips and Tricks - DSP Blog
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Accurate Measurement of a Sinusoid's Peak Amplitude Based on FFT Data
There are two code snippets associated with this blog post: Flat-Top Windowing Function for the Accurate Measurement of a Sinusoid's Peak Amplitude Based on FFT Data and Testing the Flat-Top Wind...
posted by Rick Lyons on Dec 14 2011 under Tips and Tricks Comments (6) |
Impulse Response Approximation
Recently, I stumbled upon a stepped-triangular (ST) approximation that can be implemented as a cascade of recursive running sum (RRS) filters. The following is a short introduction to the steppe... 
posted by Christopher Felton on Aug 5 2011 under Tips and Tricks Comments (3) |
Multiplying Two Binary Numbers
I just encountered what I think is an interesting technique for multiplying two integer numbers. Perhaps some of the readers here will also find it interesting. Here's the technique: assume we want...
posted by Rick Lyons on Mar 16 2011 under Tips and Tricks Comments (6) |
Implementing a full-duplex UART using the TMS320VC33 serial port
Although the TMS320VC33 serial port was designed to be used as a synchronous port, it can also be used as an asynchronous port under software control. This post describes the hardware and software nee... 
posted by Manuel Herrera on Mar 16 2011 under Basics | Tips and Tricks | Communication Comments (2) |
"Neat" Rectangular to Polar Conversion Algorithm
The subject of finding algorithms that estimate the magnitude of a complex number, without having to perform one of those pesky square root operations, has been discussed many times in the past on t...
posted by Rick Lyons on Nov 15 2010 under Tips and Tricks Comments (5) |
Improved Narrowband Lowpass IIR Filters
Here's a neat IIR filter trick. It's excerpted from the "DSP Tricks" chapter of the new 3rd edition of my book "Understanding Digital Signal Processing". Perhaps this trick will be of some value to ...
posted by Rick Lyons on Nov 6 2010 under Tips and Tricks Comments (1) |
Discrete Wavelet Transform Filter Bank Implementation (part 1)
UPDATE: Added graphs and code to explain the frequency division of the branches The focus of this article is to briefly explain an implementation of this transform and several filter bank forms. Th... 
posted by David Valencia on Oct 27 2010 under Matlab | Basics | Academia / Research | Tips and Tricks | Multirate DSP | wavelet Comments (0) |
Least-squares magic bullets? The Moore-Penrose Pseudoinverse
Hello, the topic of this brief article is a tool that can be applied to a variety of problems: The Moore-Penrose Pseudoinverse.While maybe not exactly a magic bullet, it gives us least-squares optima... 
posted by Markus Nentwig on Oct 24 2010 under Matlab | Basics | Tips and Tricks Comments (5) |
Computing FFT Twiddle Factors
Some days ago I read a post on the comp.dsp newsgroup and, if I understood the poster's words, it seemed that the poster would benefit from knowing how to compute the twiddle factors of a radix-2 fa...
posted by Rick Lyons on Aug 7 2010 under Tips and Tricks Comments (0) |
Hidden Linear Algebra in DSP
Linear algebra (LA) is usually thought of as a blunt theoretical subject. However, LA is found hidden in many DSP algorithms used widely in practice. An obvious clue in finding LA in DSP is the linea... 
posted by Sami Al Dalahmah on Jun 17 2010 under Basics | Academia / Research | Tips and Tricks Comments (4) |