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Cancellation of simulated environmental noise as a tool for measuring vocal performance during noise exposure.

Identifieur interne : 001B84 ( Main/Exploration ); précédent : 001B83; suivant : 001B85

Cancellation of simulated environmental noise as a tool for measuring vocal performance during noise exposure.

Auteurs : Sten Ternström [Suède] ; Maria Södersten ; Mikael Bohman

Source :

Journal of voice : official journal of the Voice Foundation [ 0892-1997 ] ; 2002.

RBID : pubmed:12150372

Descripteurs français

KwdFr :
- Adulte (MeSH), Adulte d'âge moyen (MeSH), Amplificateurs électroniques (MeSH), Attitude (MeSH), Bruit (effets indésirables), Conception d'appareillage (MeSH), Environnement (MeSH), Femelle (MeSH), Humains (MeSH), Mâle (MeSH), Perception de la parole (MeSH), Phonation (physiologie), Qualité de la voix (MeSH), Spectrographie sonore (MeSH), Stimulation acoustique (instrumentation).
MESH :
- effets indésirables : Bruit.
- physiologie : Phonation.
- instrumentation : Adulte, Adulte d'âge moyen, Amplificateurs électroniques, Attitude, Conception d'appareillage, Environnement, Femelle, Humains, Mâle, Perception de la parole, Qualité de la voix, Spectrographie sonore, Stimulation acoustique.

English descriptors

KwdEn :
- Acoustic Stimulation (instrumentation), Adult (MeSH), Amplifiers, Electronic (MeSH), Attitude (MeSH), Environment (MeSH), Equipment Design (MeSH), Female (MeSH), Humans (MeSH), Male (MeSH), Middle Aged (MeSH), Noise (adverse effects), Phonation (physiology), Sound Spectrography (MeSH), Speech Perception (MeSH), Voice Quality (MeSH).
MESH :
- adverse effects : Noise.
- instrumentation : Acoustic Stimulation.
- physiology : Phonation.
- Adult, Amplifiers, Electronic, Attitude, Environment, Equipment Design, Female, Humans, Male, Middle Aged, Sound Spectrography, Speech Perception, Voice Quality.

Abstract

It can be difficult for the voice clinician to observe or measure how a patient uses his voice in a noisy environment. We consider here a novel method for obtaining this information in the laboratory. Worksite noise and filtered white noise were reproduced over high-fidelity loudspeakers. In this noise, 11 subjects read an instructional text of 1.5 to 2 minutes duration, as if addressing a group of people. Using channel estimation techniques, the site noise was suppressed from the recording, and the voice signal alone was recovered. The attainable noise rejection is limited only by the precision of the experimental setup, which includes the need for the subject to remain still so as not to perturb the estimated acoustic channel. This feasibility study, with 7 female and 4 male subjects, showed that small displacements of the speaker's body, even breathing, impose a practical limit on the attainable noise rejection. The noise rejection was typically 30 dB and maximally 40 dB down over the entire voice spectrum. Recordings thus processed were clean enough to permit voice analysis with the long-time average spectrum and the computerized phonetogram. The effects of site noise on voice sound pressure level, fundamental frequency, long-term average spectrum centroid, phonetogram area, and phonation time were much as expected, but with some interesting differences between females and males.

DOI: 10.1016/s0892-1997(02)00089-9
PubMed: 12150372

Affiliations:

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Le document en format XML

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<term>Environment (MeSH)</term>
<term>Equipment Design (MeSH)</term>
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<term>Humans (MeSH)</term>
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<term>Noise (adverse effects)</term>
<term>Phonation (physiology)</term>
<term>Sound Spectrography (MeSH)</term>
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<term>Voice Quality (MeSH)</term>
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<keywords scheme="KwdFr" xml:lang="fr"><term>Adulte (MeSH)</term>
<term>Adulte d'âge moyen (MeSH)</term>
<term>Amplificateurs électroniques (MeSH)</term>
<term>Attitude (MeSH)</term>
<term>Bruit (effets indésirables)</term>
<term>Conception d'appareillage (MeSH)</term>
<term>Environnement (MeSH)</term>
<term>Femelle (MeSH)</term>
<term>Humains (MeSH)</term>
<term>Mâle (MeSH)</term>
<term>Perception de la parole (MeSH)</term>
<term>Phonation (physiologie)</term>
<term>Qualité de la voix (MeSH)</term>
<term>Spectrographie sonore (MeSH)</term>
<term>Stimulation acoustique (instrumentation)</term>
</keywords>
<keywords scheme="MESH" qualifier="adverse effects" xml:lang="en"><term>Noise</term>
</keywords>
<keywords scheme="MESH" qualifier="effets indésirables" xml:lang="fr"><term>Bruit</term>
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<keywords scheme="MESH" qualifier="instrumentation" xml:lang="en"><term>Acoustic Stimulation</term>
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<front><div type="abstract" xml:lang="en">It can be difficult for the voice clinician to observe or measure how a patient uses his voice in a noisy environment. We consider here a novel method for obtaining this information in the laboratory. Worksite noise and filtered white noise were reproduced over high-fidelity loudspeakers. In this noise, 11 subjects read an instructional text of 1.5 to 2 minutes duration, as if addressing a group of people. Using channel estimation techniques, the site noise was suppressed from the recording, and the voice signal alone was recovered. The attainable noise rejection is limited only by the precision of the experimental setup, which includes the need for the subject to remain still so as not to perturb the estimated acoustic channel. This feasibility study, with 7 female and 4 male subjects, showed that small displacements of the speaker's body, even breathing, impose a practical limit on the attainable noise rejection. The noise rejection was typically 30 dB and maximally 40 dB down over the entire voice spectrum. Recordings thus processed were clean enough to permit voice analysis with the long-time average spectrum and the computerized phonetogram. The effects of site noise on voice sound pressure level, fundamental frequency, long-term average spectrum centroid, phonetogram area, and phonation time were much as expected, but with some interesting differences between females and males.</div>
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<Pagination><MedlinePgn>195-206</MedlinePgn>
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<Abstract><AbstractText>It can be difficult for the voice clinician to observe or measure how a patient uses his voice in a noisy environment. We consider here a novel method for obtaining this information in the laboratory. Worksite noise and filtered white noise were reproduced over high-fidelity loudspeakers. In this noise, 11 subjects read an instructional text of 1.5 to 2 minutes duration, as if addressing a group of people. Using channel estimation techniques, the site noise was suppressed from the recording, and the voice signal alone was recovered. The attainable noise rejection is limited only by the precision of the experimental setup, which includes the need for the subject to remain still so as not to perturb the estimated acoustic channel. This feasibility study, with 7 female and 4 male subjects, showed that small displacements of the speaker's body, even breathing, impose a practical limit on the attainable noise rejection. The noise rejection was typically 30 dB and maximally 40 dB down over the entire voice spectrum. Recordings thus processed were clean enough to permit voice analysis with the long-time average spectrum and the computerized phonetogram. The effects of site noise on voice sound pressure level, fundamental frequency, long-term average spectrum centroid, phonetogram area, and phonation time were much as expected, but with some interesting differences between females and males.</AbstractText>
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Cancellation of simulated environmental noise as a tool for measuring vocal performance during noise exposure.

Cancellation of simulated environmental noise as a tool for measuring vocal performance during noise exposure.

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki