Browse Prior Art Database

Plosive Measurement

IP.com Disclosure Number: IPCOM000096262D
Original Publication Date: 1963-Mar-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 30K

Publishing Venue

IBM

Related People

Ferrier, HA: AUTHOR

Abstract

This system independently detects plosive type speech sounds, These are sounds such as Tuh (letter T) or Puh (letter P), formed by the expulsion of air from the mouth. This is accomplished by sub-audio, low-pass filters. These strip the audio signal of substantially everything but the plosive wave. An amplitude detector indicates the occurrence of the plosive.

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Plosive Measurement

This system independently detects plosive type speech sounds, These are sounds such as Tuh (letter T) or Puh (letter P), formed by the expulsion of air from the mouth. This is accomplished by sub-audio, low-pass filters. These strip the audio signal of substantially everything but the plosive wave. An amplitude detector indicates the occurrence of the plosive.

The plosive detector combination PD, along with other speech recognition detection circuitry FR for frictioning and V for voicing, accepts the transduced audio signals from microphone M and amplifier A. The signals are applied in coded form to word detectors WD1... WDn. The plosive detector PD can comprise a frequency filter F and amplitude sensing trigger AST. As indicated, trigger AST takes the form of an amplitude detecting relay R, while filter F takes the form of any suitable sub-audio low-pass filter such as RC filter R(1)-C(1) R(2) - C(2).

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