Binaural loudness summation for speech presented via earphones and loudspeaker with and without visual cues.

The Journal of the Acoustical Society of America
Michael Epstein, Mary Florentine

Abstract

Preliminary data [M. Epstein and M. Florentine, Ear. Hear. 30, 234-237 (2009)] obtained using speech stimuli from a visually present talker heard via loudspeakers in a sound-attenuating chamber indicate little difference in loudness when listening with one or two ears (i.e., significantly reduced binaural loudness summation, BLS), which is known as "binaural loudness constancy." These data challenge current understanding drawn from laboratory measurements that indicate a tone presented binaurally is louder than the same tone presented monaurally. Twelve normal listeners were presented recorded spondees, monaurally and binaurally across a wide range of levels via earphones and a loudspeaker with and without visual cues. Statistical analyses of binaural-to-monaural ratios of magnitude estimates indicate that the amount of BLS is significantly less for speech presented via a loudspeaker with visual cues than for stimuli with any other combination of test parameters (i.e., speech presented via earphones or a loudspeaker without visual cues, and speech presented via earphones with visual cues). These results indicate that the loudness of a visually present talker in daily environments is little affected by switching between binaural...Continue Reading

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Citations

Aug 7, 2014·The Journal of the Acoustical Society of America·Brian C J MooreBrian R Glasberg
Feb 24, 2015·The Journal of the Acoustical Society of America·Vincent Koehl, Mathieu Paquier
Oct 16, 2014·Trends in Hearing·Brian C J Moore
Feb 13, 2018·International Journal of Audiology·Vishakha W Rawool, Madaline Parrill
May 9, 2014·Attention, Perception & Psychophysics·Josef SchlittenlacherJulie Arseneau
Apr 21, 2020·International Journal of Audiology·Maaike Van EeckhoutteSusan Scollie
Oct 2, 2020·Journal of Speech, Language, and Hearing Research : JSLHR·Maaike Van EeckhoutteDanielle Glista
Jan 1, 2018·The Journal of the Acoustical Society of America·Marcin WróblewskiWalt Jesteadt
Aug 3, 2021·PLoS Computational Biology·Alex D Reyes

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