Auditory parallax effects in the HRTF for nearby sources

Author

Brungart, Douglas S.

Author_Institution

Res. & Dev. Center, Wright-Patterson AFB, OH, USA

fYear

1999

fDate

1999

Firstpage

171

Lastpage

174

Abstract

When a sound source is close, the angle of the source relative to the center of the head can differ substantially from the angle of the source relative to the ear. Since the high-frequency features of the HRTF (head related transfer function) are known to depend on angle of the source relative to the ear, this “acoustic parallax” should produce a systematic remapping of high-frequency features in the far-field ipsilateral HRTF to more lateral locations in the near-field HRTF. HRTFs measured on an acoustic manikin indicate that this type of remapping does occur in the near field, and that the frequency response of the pinna is roughly independent of distance when the source is more than 5 cm from the ear. The perceptual relevance of the acoustic parallax effect is briefly discussed, along with its potential application to near-field virtual audio displays

Keywords

audio systems; frequency response; hearing; transfer functions; acoustic manikin; acoustic parallax; auditory parallax effects; far-field ipsilateral HRTF; frequency response; head related transfer function; high-frequency features; lateral locations; near-field virtual audio displays; nearby sources; perceptual relevance; pinna; sound source; systematic remapping; Acoustic applications; Acoustic measurements; Acoustic propagation; Auditory displays; Azimuth; Ear; Frequency response; Humans; Laboratories; Torso;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Signal Processing to Audio and Acoustics, 1999 IEEE Workshop on

Conference_Location

New Paltz, NY

Print_ISBN

0-7803-5612-8

Type

conf

DOI

10.1109/ASPAA.1999.810877

Filename

810877