Controlling the perceived distance of an auditory object by manipulation of loudspeaker directivity

This work presents a method to control the perceived distance of an auditory object by changing the directivity pattern of a loudspeaker and consequently the direct-to-reverberant ratio at the listening spot. Control of the directivity pattern is achieved by beamforming using a compact multi-driver...

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Bibliographic Details
Published inThe Journal of the Acoustical Society of America Vol. 137; no. 6; p. EL462
Main Authors Laitinen, Mikko-Ville, Politis, Archontis, Huhtakallio, Ilkka, Pulkki, Ville
Format Journal Article
LanguageEnglish
Published United States 01.06.2015
Subjects
Acoustic Stimulation
Acoustics - instrumentation
Amplifiers, Electronic
Cues
Equipment Design
Humans
Models, Theoretical
Motion
Sound
Sound Localization
Sound Spectrography
Transducers
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Summary:This work presents a method to control the perceived distance of an auditory object by changing the directivity pattern of a loudspeaker and consequently the direct-to-reverberant ratio at the listening spot. Control of the directivity pattern is achieved by beamforming using a compact multi-driver loudspeaker unit. A small-sized cubic array consisting of six drivers is assembled, and per driver beamforming filters are derived from directional measurements of the array. The proposed method is evaluated using formal listening tests. The results show that the perceived distance can be controlled effectively by directivity pattern modification.
ISSN:1520-8524
DOI:10.1121/1.4921678