Perceptual weighting of elevation localization cues across frequency

Axel Ahrens, Owen Brimijoin

Research output: Contribution to journalConference abstract in journalResearchpeer-review

Abstract

Spectral cues are thought to be of particular importance in the perception of the elevation of a sound source. While some work has been done on demonstrating the importance of individual frequency bands, the relative importance of bands across a wide range of frequencies has not been firmly established. To estimate this, we built a broadband signal consisting of seven 1-ERB-wide noise bands that could each be assigned to a different elevation. The frequency range was either from 1 to 16 kHz with 3-ERB-wide spectral gaps or a higher-resolution range from 3 to 12 kHz with 1-ERB-wide spectral gaps. On each trial, each frequency band was independently convolved with a randomly chosen personalized head-related transfer function from one of seven elevations (±60 deg, 15 deg steps). In a 1-interval, 2-alternative forced choice task, listeners were asked to judge whether the sound was perceived above or below a reference stimulus presented on the horizontal plane. Two azimuth angles at -15 deg and -45 deg were considered. Perceptual weights for each frequency band were then calculated using a regression analysis method. Results showed that listeners tended to weight the 6.5 kHz band the highest for both azimuth directions and frequency resolution conditions.
Original languageEnglish
JournalAcoustical Society of America. Journal
Volume145
Issue number3
Pages (from-to)1871-1871
ISSN0001-4966
DOIs
Publication statusPublished - 2019
Event177th Meeting of the Acoustical Society of America - The Galt House, Louisville, United States
Duration: 13 May 201917 May 2019
Conference number: 177
https://acousticalsociety.org/program-of-177th-meeting/

Conference

Conference177th Meeting of the Acoustical Society of America
Number177
LocationThe Galt House
CountryUnited States
CityLouisville
Period13/05/201917/05/2019
Internet address

Cite this

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title = "Perceptual weighting of elevation localization cues across frequency",
abstract = "Spectral cues are thought to be of particular importance in the perception of the elevation of a sound source. While some work has been done on demonstrating the importance of individual frequency bands, the relative importance of bands across a wide range of frequencies has not been firmly established. To estimate this, we built a broadband signal consisting of seven 1-ERB-wide noise bands that could each be assigned to a different elevation. The frequency range was either from 1 to 16 kHz with 3-ERB-wide spectral gaps or a higher-resolution range from 3 to 12 kHz with 1-ERB-wide spectral gaps. On each trial, each frequency band was independently convolved with a randomly chosen personalized head-related transfer function from one of seven elevations (±60 deg, 15 deg steps). In a 1-interval, 2-alternative forced choice task, listeners were asked to judge whether the sound was perceived above or below a reference stimulus presented on the horizontal plane. Two azimuth angles at -15 deg and -45 deg were considered. Perceptual weights for each frequency band were then calculated using a regression analysis method. Results showed that listeners tended to weight the 6.5 kHz band the highest for both azimuth directions and frequency resolution conditions.",
author = "Axel Ahrens and Owen Brimijoin",
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Perceptual weighting of elevation localization cues across frequency. / Ahrens, Axel; Brimijoin, Owen.

In: Acoustical Society of America. Journal, Vol. 145, No. 3, 2019, p. 1871-1871.

Research output: Contribution to journalConference abstract in journalResearchpeer-review

TY - ABST

T1 - Perceptual weighting of elevation localization cues across frequency

AU - Ahrens, Axel

AU - Brimijoin, Owen

PY - 2019

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N2 - Spectral cues are thought to be of particular importance in the perception of the elevation of a sound source. While some work has been done on demonstrating the importance of individual frequency bands, the relative importance of bands across a wide range of frequencies has not been firmly established. To estimate this, we built a broadband signal consisting of seven 1-ERB-wide noise bands that could each be assigned to a different elevation. The frequency range was either from 1 to 16 kHz with 3-ERB-wide spectral gaps or a higher-resolution range from 3 to 12 kHz with 1-ERB-wide spectral gaps. On each trial, each frequency band was independently convolved with a randomly chosen personalized head-related transfer function from one of seven elevations (±60 deg, 15 deg steps). In a 1-interval, 2-alternative forced choice task, listeners were asked to judge whether the sound was perceived above or below a reference stimulus presented on the horizontal plane. Two azimuth angles at -15 deg and -45 deg were considered. Perceptual weights for each frequency band were then calculated using a regression analysis method. Results showed that listeners tended to weight the 6.5 kHz band the highest for both azimuth directions and frequency resolution conditions.

AB - Spectral cues are thought to be of particular importance in the perception of the elevation of a sound source. While some work has been done on demonstrating the importance of individual frequency bands, the relative importance of bands across a wide range of frequencies has not been firmly established. To estimate this, we built a broadband signal consisting of seven 1-ERB-wide noise bands that could each be assigned to a different elevation. The frequency range was either from 1 to 16 kHz with 3-ERB-wide spectral gaps or a higher-resolution range from 3 to 12 kHz with 1-ERB-wide spectral gaps. On each trial, each frequency band was independently convolved with a randomly chosen personalized head-related transfer function from one of seven elevations (±60 deg, 15 deg steps). In a 1-interval, 2-alternative forced choice task, listeners were asked to judge whether the sound was perceived above or below a reference stimulus presented on the horizontal plane. Two azimuth angles at -15 deg and -45 deg were considered. Perceptual weights for each frequency band were then calculated using a regression analysis method. Results showed that listeners tended to weight the 6.5 kHz band the highest for both azimuth directions and frequency resolution conditions.

U2 - 10.1121/1.5101762

DO - 10.1121/1.5101762

M3 - Conference abstract in journal

VL - 145

SP - 1871

EP - 1871

JO - Acoustical Society of America. Journal

JF - Acoustical Society of America. Journal

SN - 0001-4966

IS - 3

ER -