From:	"Steve Patton" <leaphe AT pemail DOT net>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Sample playback frequency change
Date:	Sat, 31 Jan 1998 00:50:32 -0700
Organization:	AT&T WorldNet Services
Lines:	18
Message-ID:	<6aul51$qua@bgtnsc03.worldnet.att.net>
NNTP-Posting-Host:	12.67.33.41
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

I'm using Allegro (has nothing to do with the question, but for anyone who
wants to know), and I have a sample that's recorded at 44100, and the only
playback hardware frequencies are 22727 and 45454 (rough estimate, I just
know that they aren't 22050 and 44100), I'm using the audiostream procedures
so that I can have direct control over the samples.  My question is, how
could I render something that's at one frequency, at another frequency,
without the actual sample changine, like if it were at 44100 and I wanted to
play it at 22050, I would simply just have it skip every other byte (or
short in 16-bit sapmles).  But since it's not even, what would be a good
algorithm to have it play at a different frequency.  And BTW, play_sample is
out of the question in this particular application.


--
-Steve
http://home.att.net/~pattonl

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