Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uwm.edu!linac!mp.cs.niu.edu!ux1.cso.uiuc.edu!uxa.cso.uiuc.edu!rlsg7229
From: rlsg7229@uxa.cso.uiuc.edu (Robert Lewis Spence)
Newsgroups: comp.sys.mac.programmer
Subject: Questions about sounds and Macrecorder
Keywords: sound,macrecorder
Message-ID: <1991May31.151435.10888@ux1.cso.uiuc.edu>
Date: 31 May 91 15:14:35 GMT
Sender: usenet@ux1.cso.uiuc.edu (News)
Organization: University of Illinois at Urbana
Lines: 27

I am currently working on an application that will take audio information
directly into the computer and process it in real time. What this means is
that instead of running a program that records a length of sound and stores
it in memory, I need to pull in a single value and do something with it,
then get the next value, etc. I'm therefore trying to use the Macrecorder
as a simple A/D converter a sample at a time.

I'm not the most advanced programmer, so I have some questions:

1) I know Farrallon released some public domain source code for the
   Macrecorder (Available from SUMEX) but I have been having problems
   getting it to work. Is that because I have the latest version of
   the recorder? The code only pulls in about half a second of sound
   no matter how long I wait for it the record. The recorder works fine
   with the software Farrallon sent with it..]

2) Are there tech notes available on snd formats, interfacing with the
   modem port, or anything to do with Macrecorder? How about books or 
   magazine articles (Such as MacUser or MacWorld)?

3) What system tools are available that will enable me to directly access
   timing circuitry with a higher resolution then the standard 1 sec.
   Mac time routines? I need these so I can sample at standard intervals,
   so I need a clock with resolution to the jiffy or better. 

Thanks in advance,
Rob