design digital filter

[saam12]

the tutor gave us some audio files and asked us to design digital filter to improve the voice communication then implement it with texas instrument then test it
is any one have an idea i need to know what to talk about
if any one have the name of helpful books or websites tell me
with many thanks

 

[crutschow]

Start looking up information and application notes on the TI digital signal processors here.

 

[audioguru]

Some people think that if you chop off low voice frequencies and chop off important high voice frequencies (syllables) then voices sound better.
Wha' did you 'ay??

 

[MrAl]

Hi,

One simple way if you already know how to design analog filters is to first design the filter in the 's' complex frequency domain as usual, then transform to the discrete 'z' domain using say the bilinear Z transform, then convert to a difference equation.