How Does Lombard Speech Behave When The Background Noise Level Decreases? [Vortrag]

  • The Lombard Effect and its impact on human speech production, also known as ‘Lombard Speech’, have been investigated in numerous scientific studies. It is known that the intensity, but also the type of background noise can affect Lombard Speech. By contrast, the potential effect of a gradual reduction of the amplitude of the background noise has received little attention in previous research. To test for such an effect, we split 34 participants into couples and had them orally compare images. In the experimental condition, there was background noise (masker) whose amplitude was reduced from 70 to 50 dB(A) over a period of 100 seconds. Measures of speech production after this decay were compared to those of a reference condition in which the masker was constantly at 50 dB(A). We hypothesized that speech production due to prior exposure to a louder masker would show a stronger expression of Lombard Speech in the experimental compared to the reference condition. The results showed aThe Lombard Effect and its impact on human speech production, also known as ‘Lombard Speech’, have been investigated in numerous scientific studies. It is known that the intensity, but also the type of background noise can affect Lombard Speech. By contrast, the potential effect of a gradual reduction of the amplitude of the background noise has received little attention in previous research. To test for such an effect, we split 34 participants into couples and had them orally compare images. In the experimental condition, there was background noise (masker) whose amplitude was reduced from 70 to 50 dB(A) over a period of 100 seconds. Measures of speech production after this decay were compared to those of a reference condition in which the masker was constantly at 50 dB(A). We hypothesized that speech production due to prior exposure to a louder masker would show a stronger expression of Lombard Speech in the experimental compared to the reference condition. The results showed a significant difference regarding the level of the first formant F1 across conditions, but not regarding the overall dB(A) level. However, tendencies could be identified, which can serve as a basis for further investigations.show moreshow less

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Author:Paul Dräger, Jochen Steffens, Markus von Berg
open access:Bronze - frei zugänglich aber ohne Lizenzhinweis, d.h. keine Weitergabe
Institutes:Institute of Sound and Vibration Engineering (ISAVE)
Fachbereich/Einrichtung:Hochschule Düsseldorf / Fachbereich - Medien
Document Type:Conference Proceeding
Year of Completion:2024
Language of Publication:English
Publisher:Deutsche Gesellschaft für Akustik e.V.
Place of publication:Berlin
Parent Title (English):Fortschritte der Akustik - DAGA 2024, 18. - 21. März 2024, Hannover
Page Number:4
First Page:1259
Last Page:1262
Related URL:https://pub.dega-akustik.de/DAGA_2024/files/upload/paper/135.pdf
ISBN:978-3-939296-22-5
Dewey Decimal Classification:0 Informatik, Informationswissenschaft, allgemeine Werke / 00 Informatik, Wissen, Systeme / 000 Informatik, Informationswissenschaft, allgemeine Werke
Licence (German):Es gilt das deutsche Urheberrecht
Release Date:2025/05/22
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