Multirate filters : DSP
This is a discussion on Multirate filters within the DSP forums in Other Technologies category; hi all, I am working on polyphase filter bank design. I want some pointers on (i)how to avoid aliasing from other bands? (ii)what are the important steps while considering the design of prototype filter? (iii)How to avoid the amplitude distortion? (iv)How to design filter banks with different passband widths? thanks in advance vanamali...
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#1
10-11-2008, 06:03 PM
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 Multirate filters I am working on polyphase filter bank design. I want some pointers on (i)how to avoid aliasing from other bands? (ii)what are the important steps while considering the design of prototype filter? (iii)How to avoid the amplitude distortion? (iv)How to design filter banks with different passband widths? thanks in advance vanamali |
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#2
10-12-2008, 08:31 PM
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| Re: Multirate filters On Oct 12, 7:03 am, "maverick.gvs" <mail2...@gmail.com> wrote: > hi all, > I am working on polyphase filter bank design. I want some pointers on > (i)how to avoid aliasing from other bands? > (ii)what are the important steps while considering the design of prototype > filter? > (iii)How to avoid the amplitude distortion? what is 'amplitude distortion'? > (iv)How to design filter banks with different passband widths? > > thanks in advance > vanamali 1) aliasing can be avoid if proper bandedges are chosen, otherwise, minimizing the aliasing should be considered. 2,3,4) chosing the right bandedges and formulating the design problem as a optimization problem, as a function of the prototype filter. Lin. S. |