Directional dependence of binaural loudness

Wolfgang Ellermeier, Ville Pekka Sivonen

Research output: Contribution to book/anthology/report/conference proceedingConference abstract in proceedingResearch

Abstract

Even though there is a vast body of literature on spatial hearing, little is known on how the location of a sound source affects its loudness. The pertinent research on head-related transfer functions(HRTFs) primarily deals with issues of localization and spatial discriminability. The literature on binaural loudness summation, on the other hand, focuses on a highly artificial paradigm according to which unnatural combinations of sound pressure levels(such as monotic-diotic comparisons) are presented to listeners via headphones. In order to reconcile these two approaches, we recently started a series of experiments determining the effect of sound incidence angle on loudness[1,2,3,4]. The basic experiment to be reported on here was conducted in an anechoic chamber, in which loudspeakers were mounted to present sounds from a number of directions both in the horizontal, and median planes. The subject’s task was to produce a loudness match to a frontal reference location, and matches were obtained via a two-interval adaptive forced-choice procedure. Narrow-band noises were used, in order to investigate the frequency-specific effects of direction on loudness. Furthermore, individual HRTFs were measured for each incidence angle, in order to relate the changes in actual at-ear exposure to the observed changes in loudness as a function of sound incidence. Combining the listening-test data with the physical measurements, an attempt was made to model the binaural summation underlying the directional loudness matches.
Original languageEnglish
Title of host publicationFortschritte der Akustik DAGA '06 : 32. Deutsche Jahrestagung für Akustik
EditorsSabine Langer, Werner Scholl, Volker Wittstock
PublisherDeutsche Gesellschafft für Akustik e.V. (DEGA)
Publication date2006
Pages75-76
ISBN (Print)3980865924
Publication statusPublished - 2006
EventDAGA '06 - Braunscweig, Germany
Duration: 20 Mar 200623 Mar 2006
Conference number: 32

Conference

ConferenceDAGA '06
Number32
CountryGermany
CityBraunscweig
Period20/03/200623/03/2006

Fingerprint

loudness
acoustics
incidence
transfer functions
anechoic chambers
loudspeakers
ear
hearing
sound pressure
narrowband
intervals

Cite this

Ellermeier, W., & Sivonen, V. P. (2006). Directional dependence of binaural loudness. In S. Langer, W. Scholl, & V. Wittstock (Eds.), Fortschritte der Akustik DAGA '06: 32. Deutsche Jahrestagung für Akustik (pp. 75-76). Deutsche Gesellschafft für Akustik e.V. (DEGA).
Ellermeier, Wolfgang ; Sivonen, Ville Pekka. / Directional dependence of binaural loudness. Fortschritte der Akustik DAGA '06: 32. Deutsche Jahrestagung für Akustik. editor / Sabine Langer ; Werner Scholl ; Volker Wittstock. Deutsche Gesellschafft für Akustik e.V. (DEGA), 2006. pp. 75-76
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Ellermeier, W & Sivonen, VP 2006, Directional dependence of binaural loudness. in S Langer, W Scholl & V Wittstock (eds), Fortschritte der Akustik DAGA '06: 32. Deutsche Jahrestagung für Akustik. Deutsche Gesellschafft für Akustik e.V. (DEGA), pp. 75-76, DAGA '06, Braunscweig, Germany, 20/03/2006.

Directional dependence of binaural loudness. / Ellermeier, Wolfgang; Sivonen, Ville Pekka.

Fortschritte der Akustik DAGA '06: 32. Deutsche Jahrestagung für Akustik. ed. / Sabine Langer; Werner Scholl; Volker Wittstock. Deutsche Gesellschafft für Akustik e.V. (DEGA), 2006. p. 75-76.

Research output: Contribution to book/anthology/report/conference proceedingConference abstract in proceedingResearch

TY - ABST

T1 - Directional dependence of binaural loudness

AU - Ellermeier, Wolfgang

AU - Sivonen, Ville Pekka

PY - 2006

Y1 - 2006

N2 - Even though there is a vast body of literature on spatial hearing, little is known on how the location of a sound source affects its loudness. The pertinent research on head-related transfer functions(HRTFs) primarily deals with issues of localization and spatial discriminability. The literature on binaural loudness summation, on the other hand, focuses on a highly artificial paradigm according to which unnatural combinations of sound pressure levels(such as monotic-diotic comparisons) are presented to listeners via headphones. In order to reconcile these two approaches, we recently started a series of experiments determining the effect of sound incidence angle on loudness[1,2,3,4]. The basic experiment to be reported on here was conducted in an anechoic chamber, in which loudspeakers were mounted to present sounds from a number of directions both in the horizontal, and median planes. The subject’s task was to produce a loudness match to a frontal reference location, and matches were obtained via a two-interval adaptive forced-choice procedure. Narrow-band noises were used, in order to investigate the frequency-specific effects of direction on loudness. Furthermore, individual HRTFs were measured for each incidence angle, in order to relate the changes in actual at-ear exposure to the observed changes in loudness as a function of sound incidence. Combining the listening-test data with the physical measurements, an attempt was made to model the binaural summation underlying the directional loudness matches.

AB - Even though there is a vast body of literature on spatial hearing, little is known on how the location of a sound source affects its loudness. The pertinent research on head-related transfer functions(HRTFs) primarily deals with issues of localization and spatial discriminability. The literature on binaural loudness summation, on the other hand, focuses on a highly artificial paradigm according to which unnatural combinations of sound pressure levels(such as monotic-diotic comparisons) are presented to listeners via headphones. In order to reconcile these two approaches, we recently started a series of experiments determining the effect of sound incidence angle on loudness[1,2,3,4]. The basic experiment to be reported on here was conducted in an anechoic chamber, in which loudspeakers were mounted to present sounds from a number of directions both in the horizontal, and median planes. The subject’s task was to produce a loudness match to a frontal reference location, and matches were obtained via a two-interval adaptive forced-choice procedure. Narrow-band noises were used, in order to investigate the frequency-specific effects of direction on loudness. Furthermore, individual HRTFs were measured for each incidence angle, in order to relate the changes in actual at-ear exposure to the observed changes in loudness as a function of sound incidence. Combining the listening-test data with the physical measurements, an attempt was made to model the binaural summation underlying the directional loudness matches.

M3 - Conference abstract in proceeding

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EP - 76

BT - Fortschritte der Akustik DAGA '06

A2 - Langer, Sabine

A2 - Scholl, Werner

A2 - Wittstock, Volker

PB - Deutsche Gesellschafft für Akustik e.V. (DEGA)

ER -

Ellermeier W, Sivonen VP. Directional dependence of binaural loudness. In Langer S, Scholl W, Wittstock V, editors, Fortschritte der Akustik DAGA '06: 32. Deutsche Jahrestagung für Akustik. Deutsche Gesellschafft für Akustik e.V. (DEGA). 2006. p. 75-76