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RSS FeedA Quadrature Signals Tutorial: Complex, But Not Complicated
Click Here for a PDF version of this article Introduction Quadrature signals are based on the notion of complex numbers and perhaps no other topic causes more heartache for newcomers to DSP than th...
posted by Rick Lyons on Apr 12 2013 under Basics | Communication | Tutorial Comments (3) |
FIR sideways (interpolator polyphase decomposition)
An efficient implementation of a symmetric-FIR polyphase 1:3 interpolator that doesn't follow the usual tapped delay line-paradigm. The example exploits the impulse response symmetry and avoids four ... 
posted by Markus Nentwig on Sep 12 2012 under Matlab | Basics | Multirate DSP Comments (9) |
Design of an anti-aliasing filter for a DAC
Overview Octaveforge / Matlab design script. Download: here weighted numerical optimization of Laplace-domain transfer function linear-phase design, optimizes vector error (magnitude and phase) ...
posted by Markus Nentwig on Aug 18 2012 under Matlab | Basics | Wireless Comments (0) |
Python scipy.signal IIR Filter Design Cont.
In the previous post the Python scipy.signal iirdesign function was disected. We reviewed the basics of filter specification and reviewed how to use the iirdesign function to design IIR filter... 
posted by Christopher Felton on Jun 19 2012 under Basics | Python Comments (7) |
Python scipy.signal IIR Filter Design
Introduction The following is an introduction on how to design an infinite impulse response (IIR) filters using the Python scipy.signal package. This post, mainly, covers how to use the scipy...
posted by Christopher Felton on May 13 2012 under Basics | Python Comments (2) |
Instant CIC
Summary: A floating point model for a CIC decimator, including the frequency response. Description: A CIC filter relies on a peculiarity of its fixed-point implementation: Normal operation involves...
posted by Markus Nentwig on May 8 2012 under Matlab | Basics | Tips and Tricks Comments (3) |
Curse you, iPython Notebook!
First, I think ipython is great. I use it daily and always have an ipython terminal open. But just recently, I was showing off the ipython 0.12 notebook and in the process created a ...
posted by Christopher Felton on May 1 2012 under Basics | Python Comments (4) |
[Book Review] Numpy 1.5 Beginner's Guide
Full Disclosure: The publisher of this book, PACKT, was soliciting reviewers. I volunteered to review the book and the publisher sent me an e-version of the book. Introduction The followin...
posted by Christopher Felton on Jan 7 2012 under Basics | Python Comments (0) |
Design study: 1:64 interpolating pulse shaping FIR
This article is the documentation to a code snippet that originated from a discussion on comp.dsp. The task is to design a root-raised cosine filter with a rolloff of a=0.15 that interpolates to 64x...
posted by Markus Nentwig on Dec 26 2011 under Matlab | Basics | Multirate DSP Comments (5) |
Python number crunching faster? Part I
Everyone has their favorite computing platform, regardless if it is Matlab, Octave, Scilab, Mathematica, Mathcad, etc. I have been using Python and the common numerical and scientific packages a...
posted by Christopher Felton on Sep 17 2011 under Matlab | Basics | DSP on the Web | Python Comments (4) |