Intelligibility, listening difficulty and listening efficiency in auralized classrooms

The Journal of the Acoustical Society of America
Nicola ProdiAndrea Farnetani

Abstract

In order to obtain an effective speech communication in rooms it is advisable, besides reaching the full intelligibility of words, to minimize the effort paid by the listener in the recognition of the speech material. This twofold requirement is not easily described by the current room acoustic indicators, which are mainly concerned either with a subjective rating by means of word recognition scores or with using listeners' impressions of reported listening difficulties. In this work, the problem is tackled by introducing the concept of "listening efficiency," which is defined as a combination of the accuracy of intelligibility and of the effort spent on achieving this goal. This indicator is here developed, and an application of the former and of the "listening efficiency" is presented in the field of classroom acoustics. Listening tests with pupils and adults were performed and the subsequent statistical analyses indicated several interesting findings. In particular, listening efficiency is able to clearly discriminate between equal intelligibility scores obtained under different acoustical conditions, permitting room acoustics to be tailored for specific groups, such as children.

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Citations

Jan 10, 2013·The Journal of the Acoustical Society of America·Nicola ProdiAlice Feletti
Jul 27, 2011·The Journal of the Acoustical Society of America·Pyoung Jik Lee, Jin Yong Jeon
Jan 28, 2012·The Journal of the Acoustical Society of America·Arianna AstolfiGiulio Barbato
Nov 2, 2015·The Journal of the Acoustical Society of America·Nicola Prodi, Chiara Visentin
Oct 27, 2016·American Journal of Speech-language Pathology·Paul M EvittsLauren Adams
Jun 2, 2020·Journal of Speech, Language, and Hearing Research : JSLHR·Ilze OosthuizenDe Wet Swanepoel
Oct 28, 2019·Journal of Speech, Language, and Hearing Research : JSLHR·Nicola Prodi, Chiara Visentin
Apr 16, 2019·Journal of Speech, Language, and Hearing Research : JSLHR·Z Ellen Peng, Lily M Wang
Apr 25, 2019·Language, Speech, and Hearing Services in Schools·Nicola ProdiGiovanni Battista Bartolucci
May 31, 2018·Journal of Speech, Language, and Hearing Research : JSLHR·Chiara Visentin, Nicola Prodi

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