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Speech intelligibility and speech quality of modified loudspeaker announcements examined in a simulated aircraft cabin

Pennig, S. and Quehl, J. and Wittkowski, M. (2014) Speech intelligibility and speech quality of modified loudspeaker announcements examined in a simulated aircraft cabin. Ergonomics. Taylor & Francis. DOI: 10.1080/00140139.2014.952681 ISSN 0014-0139

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Abstract

Acoustic modifications of loudspeaker announcements were investigated in a simulated aircraft cabin to improve passengers’ speech intelligibility and quality of communication in this specific setting. Four experiments with 278 participants in total were conducted in an acoustic laboratory using a standardised speech test and subjective rating scales. In experiments 1 and 2 the sound pressure level (SPL) of the announcements was varied (ranging from 70 to 85 dB(A)). Experiments 3 and 4 focused on frequency modification (octave bands) of the announcements. All studies used a background noise with the same SPL (74 dB(A)), but recorded at different seat positions in the aircraft cabin (front, rear). The results quantify speech intelligibility improvements with increasing signal-to-noise ratio and amplification of particular octave bands, especially the 2 kHz and the 4 kHz band. Thus, loudspeaker power in an aircraft cabin can be reduced by using appropriate filter settings in the loudspeaker system.

Item URL in elib:https://elib.dlr.de/92130/
Document Type:Article
Additional Information:nur online veröffentlicht
Title:Speech intelligibility and speech quality of modified loudspeaker announcements examined in a simulated aircraft cabin
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Pennig, S.sibylle.pennig (at) dlr.deUNSPECIFIED
Quehl, J.julia.quehl (at) dlr.deUNSPECIFIED
Wittkowski, M.martin.wittkowski (at) dlr.deUNSPECIFIED
Date:2014
Journal or Publication Title:Ergonomics
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1080/00140139.2014.952681
Publisher:Taylor & Francis
ISSN:0014-0139
Status:Published
Keywords:speech intelligibility, sound design, loudspeaker announcements, aircraft cabin
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:air traffic management and operations
DLR - Research area:Aeronautics
DLR - Program:L AO - Air Traffic Management and Operation
DLR - Research theme (Project):L - Human factors and safety in Aeronautics
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine > Flight Physiology
Deposited By: Martin, Sophie
Deposited On:25 Nov 2014 12:26
Last Modified:06 Sep 2019 15:16

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