Polyphase FIR interpolation filter

Started by kungcoccos November 20, 2007
Hello!

Im looking for a simple matlab code that illustrates an interpolation
using polyphase implementation. I need this to understand the purpose with
the polyphase structure. Maybe anyone knows some sources also?

Thanks in advance 
"kungcoccos" <carl@hallqvist.biz> writes:

> Hello! > > Im looking for a simple matlab code that illustrates an interpolation > using polyphase implementation. I need this to understand the purpose with > the polyphase structure. Maybe anyone knows some sources also? > > Thanks in advance
Here is a homework assignment I had in my DSP class at NCSU in which one of the problems was to write a polyphase interpolation filter in Matlab. http://www.digitalsignallabs.com/ece713/hw/hw7/response/hw.pdf http://www.digitalsignallabs.com/ece713/hw/hw7/response/hw.zip The pdf file is the report. The zip file has the pdf file in it as well as the Matlab code and other components that went into the report. You may copy and use freely. --Randy -- % Randy Yates % "Remember the good old 1980's, when %% Fuquay-Varina, NC % things were so uncomplicated?" %%% 919-577-9882 % 'Ticket To The Moon' %%%% <yates@ieee.org> % *Time*, Electric Light Orchestra http://www.digitalsignallabs.com
Randy Yates <yates@ieee.org> writes:
> [...]
PS: You might also want to check the Mathworks web site for user contributed routines, and Chris Bore's excellent on-line DSP tutorials almost certainly have a module on polyphase interpolation (I haven't looked). Google for them. -- % Randy Yates % "Though you ride on the wheels of tomorrow, %% Fuquay-Varina, NC % you still wander the fields of your %%% 919-577-9882 % sorrow." %%%% <yates@ieee.org> % '21st Century Man', *Time*, ELO http://www.digitalsignallabs.com
I've got this blog article:
http://www.dsprelated.com/showarticle/22.php
Not exactly what you ask, maybe useful nonetheless.

-mn
On Nov 20, 4:46 pm, "kungcoccos" <c...@hallqvist.biz> wrote:
> Hello! > > Im looking for a simple matlab code that illustrates an interpolation > using polyphase implementation. I need this to understand the purpose with > the polyphase structure. Maybe anyone knows some sources also? > > Thanks in advance
Hi, I written a brief writeup with small example code snippets here http://www.dsplog.com/2007/05/12/polyphase-filters-for-interpolation HTH, Krishna http://www.dsplog.com