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Analysis of frication noise modulation from a physical model

Analysis of frication noise modulation from a physical model
Analysis of frication noise modulation from a physical model
A physical model, built to investigate the aeroacoustic properties of voiced fricative speech, was used to study the amplitude modulation of theturbulence noise it generated. The amplitude and fundamental frequency of glottal vibration, relative positions of the constriction and obstacle, and the flow rate were varied. Measurements were made from pressure taps in the duct wall and the sound pressure at the open end. The high-pass filtered sound pressure was analyzed in terms of the magnitude and phase of the turbulence noise envelope. The magnitude and phase of the observed modulation was related to the upstream pressure. The effects of moving the obstacle with respect to the constriction are reported (representative of the teeth and the tongue in a sibilant fricative respectively). These results contribute to the development of a parametric model of the aeroacoustic interaction of voicing with turbulence noise generation in speech.
0001-4966
p.3578
Barney, Anna
bc0ee7f7-517a-4154-ab7d-57270de3e815
Jackson, Philip J.B.
c658b148-ce3e-418d-ba12-9e970c9563dc
Barney, Anna
bc0ee7f7-517a-4154-ab7d-57270de3e815
Jackson, Philip J.B.
c658b148-ce3e-418d-ba12-9e970c9563dc

Barney, Anna and Jackson, Philip J.B. (2008) Analysis of frication noise modulation from a physical model. Journal of the Acoustical Society of America, 123 (5), p.3578. (doi:10.1121/1.2934677).

Record type: Article

Abstract

A physical model, built to investigate the aeroacoustic properties of voiced fricative speech, was used to study the amplitude modulation of theturbulence noise it generated. The amplitude and fundamental frequency of glottal vibration, relative positions of the constriction and obstacle, and the flow rate were varied. Measurements were made from pressure taps in the duct wall and the sound pressure at the open end. The high-pass filtered sound pressure was analyzed in terms of the magnitude and phase of the turbulence noise envelope. The magnitude and phase of the observed modulation was related to the upstream pressure. The effects of moving the obstacle with respect to the constriction are reported (representative of the teeth and the tongue in a sibilant fricative respectively). These results contribute to the development of a parametric model of the aeroacoustic interaction of voicing with turbulence noise generation in speech.

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Published date: May 2008

Identifiers

Local EPrints ID: 57808
URI: https://eprints.soton.ac.uk/id/eprint/57808
ISSN: 0001-4966
PURE UUID: 0998a2c1-8401-4f13-afe5-cb473b512b53
ORCID for Anna Barney: ORCID iD orcid.org/0000-0002-6034-1478

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Date deposited: 20 Aug 2008
Last modified: 14 Mar 2019 01:49

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Contributors

Author: Anna Barney ORCID iD
Author: Philip J.B. Jackson

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