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From: ruck@reef.cis.ufl.edu (John Ruckstuhl)
Newsgroups: comp.dsp
Subject: Re: Having messed with FFT programs, I have a few questions...
Message-ID: <25687@uflorida.cis.ufl.EDU>
Date: 2 Dec 90 17:24:58 GMT
References: <1811@beguine.UUCP>
Sender: news@uflorida.cis.ufl.EDU
Organization: UF CIS Dept.
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In article <1811@beguine.UUCP> Jeff.Miller@samba.acs.unc.edu (Jeff Miller) writes:
>Can I "zoom in" on that frequency range, for better resolution, without 
>increasing the sample rate or making any other changes which in the real 
>world (if I applied this to CD audio for example) would be difficult? 
>Don't ask me why I haven't tried by modifying my program...

Consider the "Zoom FFT" suggested by Yip (1976), and discussed in modern 
textbooks of DSP.
Hopefully, someone will post or email the title of a good reference --
else check Blahut's Fast Algorithms for DSP or Taylor's Digital Filter
Design Handbook to see if they describe it.

Regards,
ruck.
--
John R Ruckstuhl, Jr
University of Florida		ruck@cis.ufl.edu, uflorida!ruck


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