generalized comb filters: help with terminology...

On Tue, 06 Dec 2011 16:18:18 -0500, robert bristow-johnson
<rbj@audioimagination.com> wrote:

>On 12/6/11 3:40 PM, Vladimir Vassilevsky wrote:
>>
>> robert bristow-johnson wrote:
>>
>>>
>>> so, if you were to generalize this further and create a comb filter as
>>>
>>>    H(z)  =  G(z^M)
>>
>> This is what they call interpolated filters.
>
>i dunno, Vlad.  who is they?
>
>> Combining LPF and HPF comb structures could make for very efficient
>> filters with arbitrary response.
>
>well, arbitrary *repeating* response.
>
>> Rick Lyons wrote a few articles about it.
>
>well, if they are that IEEE tips & tricks (or something else), i 
>wouldn't mind a solid reference.
>

Hi Robert,
   I didn't see your post until this morning.

My first article about interpolated FIR filters was:

  "Interpolated Narrowband Lowpass FIR Filters", 
   IEEE Signal Processing Magazine, DSP Tips and 
   Tricks column, Vol. 20, No. 1, pp. 50-57, Jan. 2003.

My second article with, some additional ideas about 
interpolated FIR filters, was:

  "Turbocharging Interpolated FIR Filters", 
   IEEE Signal Processing Magazine, DSP Tips and 
   Tricks column, Sept. 2007.

In 2009 I wrote an article about interpolated IIR filters 
based on a idea developed by DSP guru fred harris.
That article was: 

  "Improved Narrowband Lowpass IIR Filters in 
   Fixed-Point Systems", IEEE Signal Processing Magazine, 
   DSP Tips and Tricks column, March, 2009.

Robert if you're ineterested in those articles but can't 
find down-loadable PDF copies on the web, send me 
a private E-mail and I'll send you a PDF version of those 
articles.

See Ya',
[-Rick-]