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Rick Lyons's DSP Blog

Rick Lyons
Richard (Rick) Lyons is a consulting Systems Engineer and lecturer with Besser Associates in Mountain View, California. He is the author of "Understanding Digital Signal Processing 2/E" (Prentice-Hall, 2004), and Editor of, and contributor to, "Streamlining Digital Signal Processing, A Tricks of the Trade Guidebook" (IEEE Press/Wiley, 2007). He is also an Associate Editor for the IEEE Signal Processing Magazine.

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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 (2) |

Free DSP Books on the Internet

While surfing the "net" I have occasionally encountered signal processing books whose chapters could be downloaded to my computer. I started keeping a list of those books and, over the years...


posted by Rick Lyons on Feb 23 2008 under DSP on the Web 
Comments (8) |

A Simple Complex Down-conversion Scheme

Recently I was experimenting with complex down-conversion schemes. That is, generating an analytic (complex) version, centered at zero Hz, of a real bandpass signal that was originally centered at &pl...


posted by Rick Lyons on Jan 21 2008
Comments (5) |

Computing Chebyshev Window Sequences

Chebyshev windows (also called Dolph-Chebyshev, or Tchebyschev windows), have several useful properties. Those windows, unlike the fixed Hanning, Hamming, or Blackman window functions, have adjustable...


posted by Rick Lyons on Jan 7 2008 under Academia / Research 
Comments (9) |

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 (2) |

A Differentiator With a Difference

Some time ago I was studying various digital differentiating networks, i.e., networks that approximate the process of taking the derivative of a discrete time-domain sequence. By "studying" ...


posted by Rick Lyons on Nov 3 2007 under Tips and Tricks 
Comments (1) |