Browse Prior Art Database

Automatically Turning off the Microphone while Recording Enrollment Sentences for an Automatic Speech Recognizer

IP.com Disclosure Number: IPCOM000108525D
Original Publication Date: 1992-Jun-01
Included in the Prior Art Database: 2005-Mar-22
Document File: 2 page(s) / 68K

Publishing Venue

IBM

Related People

Davies, K: AUTHOR [+2]

Abstract

In most speech recognizer enrollment programs, the user turns the microphone on, utters some speech, and then turns the microphone off. This has numerous problems which could seriously affect the training results. This invention proposes turning the microphone off automatically when speech has stopped.

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Automatically Turning off the Microphone while Recording Enrollment Sentences for an Automatic Speech Recognizer

       In most speech recognizer enrollment programs, the user
turns the microphone on, utters some speech, and then turns the
microphone off.  This has numerous problems which could seriously
affect the training results.  This invention proposes turning the
microphone off automatically when speech has stopped.

      There are several problems associated with requiring the user
to turn the microphone off when recording the enrollment sentences.
The user might accidentally turn the microphone off too quickly after
the last word is said, clipping the speech or the silence necessary
for training. Another problem is that either the microphone switch or
the user might make noise in the process of turning the microphone
off.  This noise will contribute detrimentally to the training.
Since the program knows what is being recorded, it is possible to
turn the microphone off automatically for the user to remove these
problems.

      This invention proposes turning the microphone off
automatically upon encountering a long period of silence. An
approximation to this invention has already been implemented in the
enrollment system.  A bouncing ball is used to highlight the words in
the enrollment system (*). The user is expected to keep pace with the
highlighting. Upon the last word becoming dehighlighted, the
microphone remains on for an additional  period...