Path: utzoo!attcan!uunet!samsung!usc!rutgers!mcnc!thorin!lhotse!symon
From: symon@lhotse.cs.unc.edu (James Symon)
Newsgroups: comp.music
Subject: Re: Manipulating sampled sounds.
Message-ID: <12720@thorin.cs.unc.edu>
Date: 19 Mar 90 14:46:45 GMT
References: <2441@rodan.acs.syr.edu> <00933E08.7E4E7D40@max.berkeley.edu>
Sender: duncanl@thorin.cs.unc.edu
Lines: 17

In article <00933E08.7E4E7D40@max.berkeley.edu>, dc@max.berkeley.edu writes:
> One approach you could take that I have not seen mentioned in the various
> replies to your query in the newsgroup is the brute force method of FFTing
> the entire stream, truncating the spectrum (i.e. setting everything over
> 5500 Hz to zero), FFTing back, and picking every fifth sample. 

Just what I was going to suggest. Simple and clean. But why do you
need to pick every fifth sample? I'm not familiar with the standard
inverse transform algorithms, but once you're in the frequency domain
can't you just do your "FFTing back" with whatever sampling period you
want?

Jim Symon			| symon@cs.unc.edu
Computer Science Dept		| {uunet, decvax}!mcnc!unc!symon
Chapel Hill, NC  27599-3175	| (919) w:962-1893 h:968-1024

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