Path: utzoo!utgpu!cunews!bnrgate!brtph3!brchh104!brchs1!bnr.ca!rice.edu!sun-spots-request
From: mikes@sylow.mscs.mu.edu (Michael Slattery)
Newsgroups: comp.sys.sun
Subject: Audio frequency analysis
Keywords: Source
Message-ID: <615@brchh104.bnr.ca>
Date: 5 Dec 90 02:00:00 GMT
Sender: news@brchh104.bnr.ca
Organization: Sun-Spots
Lines: 15
Approved: Sun-Spots@rice.edu
X-Original-Date: 27 Nov 90 19:06:12 GMT
X-Sun-Spots-Digest: Volume 9, Issue 389, message 2
X-Note: Submissions: sun-spots@rice.edu, Admin: sun-spots-request@rice.edu

I am interested in using the audio input of a Sun SparcStation 1+ to do
some voice recognition work.  In this connection it would be useful to
have a frequency analysis of the recorded signal.  Has anyone written code
which will transform the recorded audio signal into a (time-dependent)
frequency distribution?  Ideally, the program would display an image which
has time on one axis, frequency on the other and the darkness of the image
at a point depends on the intensity of the specified frequency at the
specified time (plots like this are produced by some hardware frequency
analyzers).  I am not looking for real-time conversion, something which
would read the stored audio data from a period of recording would be
great.

mike slattery
mikes@sylow.mscs.mu.edu
marquette university, milwaukee wi 53233