Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!jarthur!nntp-server.caltech.edu!dank
From: dank@nntp-server.caltech.edu (Daniel R. Kegel)
Newsgroups: comp.sys.next
Subject: Access to sound port from DSP?
Summary: Need source example
Message-ID: <1991Mar24.231144.19341@nntp-server.caltech.edu>
Date: 24 Mar 91 23:11:44 GMT
Organization: California Institute of Technology, Pasadena
Lines: 15

I'm trying to find out how to write a program for the DSP that simply
acts as a digital filter for audio.  It would continuously read from the
microphone, and write a processed version of the signal to the speaker.
I do not want any part of the program to reside on the Unix side of the Next
(except perhaps to load the DSP program).

Can anybody tell me where to find example source code that accesses the
sound ports from the DSP?  I've looked through the examples that came with
the Next, and found nice examples of how to write a DSP program that
doesn't access sound, and nice examples of how to write a program that
does sound but runs on the 680x0 rather than the DSP, but no examples
of how to do sound with the DSP.

Help!
- Dan Kegel (dank@moc.jpl.nasa.gov)