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Tips and Tricks - DSP Blog

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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 (5) |

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) |

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) |

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) |

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) |

Unit Testing for Embedded Algorithms

Happy Holidays! For my premier article, I am writing about my favorite technique to use when designing and developing software- unit testing. Unit testing is a best practice when designing software...

posted by Anthony Ricke on Dec 20 2009 under Basics | Tips and Tricks 
Comments (0) |

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) |

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) |

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) |
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