From: Dale Thorn <dthorn@gte.net>
Date: Sat, 18 Jan 1997 09:14:59 -0800 (PST)
To: pgut001@cs.auckland.ac.nz
Subject: Re: Keyword scanning/speech recognition
In-Reply-To: <85359805820229@cs26.cs.auckland.ac.nz>
Message-ID: <32E104FF.422B@gte.net>
MIME-Version: 1.0
Content-Type: text/plain


pgut001@cs.auckland.ac.nz wrote:
> I was talking to someone recently about the feasibilty of keyword-scanning
> phone conversations.  He thought it was probably still beyond the reach of
> current technology, I thought it wasn't (I gave a couple of references in a
> recent paper on government attitudes to crypto which indicate that it's being
> used right now by a number of governments).  Anyway, I've got bits and pieces
> of one or two papers here which people might find interesting.  The first one is:
> "Digital Circuit Techniques for Speech Analysis" by G.L.Clapper, presented at
>  the AIEE Winter General Meeting in January 1962.
> I've only got the first two pages of the paper here, I think the full thing
> might have been published in the IEEE Trans.Communications in about 1963.  This
> paper mentions a "digit recognizer" built at Bell Labs in 1952, and a Japanese
> voice-operated typewriter using 3,000 transistors and 6,000 diodes.  The paper
> goes on to describe a means of producing a "compact digital code expressing
> significant qualities of speech in a form suitable for machine utilization".
> This was in 1962!

Mae Brussell (daughter of I. Magnin chain founder) and later John Judge
have been writing about this and related subjects for more than 20
years now.  Check out "The John Judge Reader".