Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!nrl-cmf!ukma!tut.cis.ohio-state.edu!rutgers!att!ttrdc!levy
From: levy@ttrdc.UUCP (Daniel R. Levy)
Newsgroups: comp.sys.ibm.pc
Subject: has your pc spoken to you lately?
Message-ID: <3193@ttrdc.UUCP>
Date: 10 Feb 89 05:57:03 GMT
Organization: AT&T, Skokie, IL
Lines: 21

Please forgive me if this has come up before on this news group (I don't
read it very much) but is it possible to get a PC to "talk" (synthesize
some kind of recognizable speech, however artificial sounding) through its
built-in speaker?  As I understand the way the speaker is set up, the
speaker is fed a binary signal, either controlled directly by the user or
divided down by a user-selectable factor from an internal oscillator.  It
seems to me from a casual look at this design that the speaker could be pulsed
at ultrasonic rates, making a crude kind of pulse width modulation waveform
"synthesis" possible.  But has anyone heard of this being exploited
successfully to actually make the built-in speaker "talk"?  (I'm not
interested in special voice synthesizer hardware, just in tricks with
the built in speaker.)

If you have something you can tell me on this matter, please send me email
if you can.  I can't always keep a close eye on this news group.  Thank you
much in advance.
-- 
Daniel R. Levy             UNIX(R) mail:  att!ttbcad!levy
AT&T Bell Laboratories
5555 West Touhy Avenue     Any opinions expressed in the message above are
Skokie, Illinois  60077    mine, and not necessarily AT&T's.