Browse Prior Art Database

Graphical Representation of Speaker-Independent Vowel Recognition

IP.com Disclosure Number: IPCOM000035229D
Original Publication Date: 1989-Jun-01
Included in the Prior Art Database: 2005-Jan-28
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Destombes, F: AUTHOR [+3]

Abstract

Disclosed is a process for graphically representing speaker-independent vowel recognition.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 64% of the total text.

Page 1 of 1

Graphical Representation of Speaker-Independent Vowel Recognition

Disclosed is a process for graphically representing speaker-independent vowel recognition.

A speaker is requested to pronounce a vowel. Sounds pronounced by the speaker are captured by a microphone connected to a personal computer via appropriate circuitry. Acoustical processing is performed to extract parameters which are then used for speaker-independent recognition.

Recognition is made in real time at short intervals (e.g., 1/10 second), using a majority decision rule. The speaker is then asked to keep pronouncing this vowel.

The system then switches to image replacement mode: an image appears gradually when the speaker keeps pronouncing the same vowel, disappears when he stops pronouncing it or pronounces it incorrectly.

Image appearance/disappearance is made by exchanging pixels of identical rank between the display screen and a memory array containing the image. In order to make this process as uniform as possible, a random number generator is used to select the pixels to be exchanged. On a screen containing 64,000 pixels, one uses a generator producing numbers up to 65,535, while ignoring numbers above 63,999.

This generator is designed to produce all numbers in the interval 0...65,535 and to produce them exactly once (thus, yielding a random permutation of these numbers). Based on the theory of "Mersenne fields of numbers", it computes a new number in the interval based only on the last num...