Browse Prior Art Database

Employing Speech Recognition through Common Telephone Equipment

IP.com Disclosure Number: IPCOM000117069D
Original Publication Date: 1995-Dec-01
Included in the Prior Art Database: 2005-Mar-31
Document File: 2 page(s) / 59K

Publishing Venue

IBM

Related People

Choi, W: AUTHOR [+4]

Abstract

Disclosed is a speech recognition system connected between a telephone handset and a telephone wall outlet. This method avoids requiring the usage of a separate microphone for speech recognition tasks or the replacement of a standard telephone handset with a specialized device.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 61% of the total text.

Employing Speech Recognition through Common Telephone Equipment

      Disclosed is a speech recognition system connected between a
telephone handset and a telephone wall outlet.  This method avoids
requiring the usage of a separate microphone for speech recognition
tasks or the replacement of a standard telephone handset with a
specialized device.

      The Figure is a block diagram of this system, which is
installed when the user disconnects his telephone handset 1 from the
wall outlet 2, plugs it in to an RJ-11 connector available on a
computing system 3 with speech recognition capabilities, and connects
another telephone cord 4 to extend between the computing system and
the wall outlet.  The computing system 3 includes a microprocessor 5,
memory 6, speech recognition software 7, an analog to digital
convertor 8, and, optionally, a digital signal processor 9.

      After the system is installed, when the user picks up the
handset 1, he hears a dial tone and can dial in the conventional
manner, as the computing system 3 is silent on the line.
Alternately, the user can depress a specific key sequence, such as
"," or speak a  specific word, such as "computer," causing the
system 3 to drop the dial tone, waiting for a recognizable command,
such as "call" followed by the name of a person listed in system
memory 6.  The system then places the call.  In an alternate
implementation of the system, the dial tone is suppressed when the
handset 1 is picked up, and...