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Current list of bloggers:
Andor Bariska | Eric Jacobsen | Jeff Brower | Julius Orion Smith III | Markus Nentwig | Mike Dunn | Parth Vakil | Peter Kootsookos | Prabindh Sundareson | Praveen Raghavan | Rick Lyons | Stephane Boucher | Steve Smith | Tim Wescott
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Andor Bariska | Eric Jacobsen | Jeff Brower | Julius Orion Smith III | Markus Nentwig | Mike Dunn | Parth Vakil | Peter Kootsookos | Prabindh Sundareson | Praveen Raghavan | Rick Lyons | Stephane Boucher | Steve Smith | Tim Wescott
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The Nature of Circles
What do you mean? When calculating the mean of a list of numbers, the obvious approach is to sum them and divide by how many there are. Suppose I give you a list of two numbers: 0 359 What i...
posted by Peter Kootsookos on Feb 21 2009 under Academia / Research | Tips and Tricks
Comments (3) |
Simultaneously Computing a Forward FFT and an Inverse FFT Using a Single FFT
Most of us are familiar with the processes of using a single N-point complex FFT to: (1) perform a 2N-point FFT on real data, and (2) perform two independent N-point FFTs on real data [1–5]. I... 
posted by Rick Lyons on Jan 13 2009 under Tips and Tricks
Comments (2) |
Multiplierless Exponential Averaging
This blog discusses an interesting approach to exponential averaging. To begin my story, a traditional exponential averager (also called a "leaky integrator"), shown in Figure 1(a), is commonly used... posted by Rick Lyons on Dec 5 2008 under Tips and Tricks
Comments (1) |
Computing the Group Delay of a Filter
I just learned a new method (new to me at least) for computing the group delay of digital filters. In the event this process turns out to be interesting to my readers, this blog describes the method... posted by Rick Lyons on Nov 19 2008 under Tips and Tricks
Comments (7) |
Computing Large DFTs Using Small FFTs
It is possible to compute N-point discrete Fourier transforms (DFTs) using radix-2 fast Fourier transforms (FFTs) whose sizes are less than N. For example, let's say the largest size FFT software ro... posted by Rick Lyons on Jun 23 2008 under Tips and Tricks
Comments (9) |
Linear-phase DC Removal Filter
This blog describes several DC removal networks that might be of interest to the dsprelated.com readers. Back in August 2007 there was a thread on the comp.dsp newsgroup concerning the process of re... posted by Rick Lyons on Mar 30 2008 under Tips and Tricks
Comments (10) |
Correlation without pre-whitening is often misleading
White Lies Correlation, as one of the first tools DSP users add to their tool box, can automate locating a known signal within a second (usually larger) signal. The expected result of a correlation i... posted by Peter Kootsookos on Feb 18 2008 under Matlab | Basics | Tips and Tricks
Comments (3) |
Handling Spectral Inversion in Baseband Processing
The problem of "spectral inversion" comes up fairly frequently in the context of signal processing for communication systems. In short, "spectral inversion" is the reversal of the ... 
posted by Eric Jacobsen on Feb 11 2008 under Tips and Tricks | Wireless | Communication
Comments (2) |
Resolving 'Can't initialize target CPU' on TI C6000 DSPs - Part 2
Configuration The previous article discussed CCS configuration. The prerequisite for the following discussion is a valid CCS configuration file. All references will be for CCS 3.3, but they may be use... 
posted by Mike Dunn on Nov 12 2007 under TMS320C6x | Basics | Tips and Tricks
Comments (2) |
Spectral Flipping Around Signal Center Frequency
Most of us are familiar with the process of flipping the spectrum (spectral inversion) of a real signal by multiplying that signal's time samples by (-1)n. In that process the center of spectral rotat... posted by Rick Lyons on Nov 7 2007 under Tips and Tricks | Multirate DSP
Comments (4) |