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From: isr@rodan.acs.syr.edu (Michael S. Schechter - ISR group account)
Newsgroups: comp.dsp
Subject: Non-Linear Interpolation-Help!
Message-ID: <1697@rodan.acs.syr.edu>
Date: 8 Jan 90 21:31:41 GMT
Sender: isr@rodan.acs.syr.edu
Reply-To: isr@rodan.acs.syr.edu (Michael S. Schechter - ISR group account)
Organization: Institute for Sensory Research
Lines: 19


Hi, I need to generate 'nice' sine-wave signals with a 56001 chip.
The built-in ROM table makes this rather simple, except I need
to interpolate (depending on frequency) as many as 40 points between
the sine wave table values. No, I don't have enough memory to store
a full quarter-cycle of my waveform. If interpolating 40 points is
undoable, I HAVE to be able to get at least 10 points.
 Knowing virtually nothing about signal processing, I'm wondering if
someone could tell me where I could find a non-linear interpolation
method for sine waves. Preferably this would be source on a manufacturer's
BBS somewhere so I could get it quickly.
  I just found out 4 days ago that this "whenever it gets done" project
has to be finished by MARCH, so I need the information ASAP.
BTW, can someone tell me the # for TI's 320x0 BBS?
---Thanks,
 Mike Schechter                        InterNet:isr@rodan.acs.syr.edu 
Computer Systems Engineer,             BITNET:  SENSORY@SUNRISE
Institute for Sensory Research,
Merrill Lane, Syracuse,NY,13210 USA