Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
most likely refers to a filter design method for linear phase filters. half-band filters are very popular because they are very efficient. for a linear phase lowpass filter, the coefficients fall along a sinc function (or a sinc function that has been modified) The key property is that nearly every other sampled value is 0 for the half-band filter. eg, the coefficients might be 1 0 -2 0 4 0 -8 0 16 64 16 0 -8 0 4 0 -2 0 1. (I know these values have some issues, it's an example). this allows for a reduction of multipliers by around a factor of 2. This type of filter also becomes very efficient for decimate/interpolate by 2 applications.
Mth band filter expand on this concept by getting a 0 coefficient in every M'th location. This is done for cases where the bandwidth should be less than 1/2.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.