An estimation method of interaural time differences from measured head-related impulse responses

Masashi Toyoda; Kanji Watanabe; Yukio Iwaya; Yôiti Suzuki

doi:10.1250/ast.27.239

An estimation method of interaural time differences from measured head-related impulse responses

Masashi Toyoda, Kanji Watanabe, Yukio Iwaya, Yôiti Suzuki

Human Information Systems Division

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

A new estimation method is proposed to improve the accuracy of the interaural time difference (ITD). Head-related impulse responses (HRIR) in adjacent directions are applied to calculate the cross correlation function in the method. The proposed method has two advantages over the conventional methods. A reliable correlation coefficient can be obtained as the correlation is always calculated using HRIRs in adjacent directions that are expected to have similar waveforms even when the source is in a shadowed direction. A fractional difference between initial delays can be expressed by up-sampling HRIRs. The ITDs calculated by the proposed method fit well in the plots in the frequency ranges from 2 to 15 kHz for the azimuth of 30° and from 6 to 12 kHz for the azimuth of 60°.

Original language	English
Pages (from-to)	239-241
Number of pages	3
Journal	Acoustical Science and Technology
Volume	27
Issue number	4
DOIs	https://doi.org/10.1250/ast.27.239
Publication status	Published - 2006

Keywords

Cross correlation function
HRIR
HRTF
ITD

ASJC Scopus subject areas

Acoustics and Ultrasonics

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10.1250/ast.27.239

Cite this

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title = "An estimation method of interaural time differences from measured head-related impulse responses",

abstract = "A new estimation method is proposed to improve the accuracy of the interaural time difference (ITD). Head-related impulse responses (HRIR) in adjacent directions are applied to calculate the cross correlation function in the method. The proposed method has two advantages over the conventional methods. A reliable correlation coefficient can be obtained as the correlation is always calculated using HRIRs in adjacent directions that are expected to have similar waveforms even when the source is in a shadowed direction. A fractional difference between initial delays can be expressed by up-sampling HRIRs. The ITDs calculated by the proposed method fit well in the plots in the frequency ranges from 2 to 15 kHz for the azimuth of 30° and from 6 to 12 kHz for the azimuth of 60°.",

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AU - Toyoda, Masashi

AU - Watanabe, Kanji

AU - Iwaya, Yukio

AU - Suzuki, Yôiti

PY - 2006

Y1 - 2006

N2 - A new estimation method is proposed to improve the accuracy of the interaural time difference (ITD). Head-related impulse responses (HRIR) in adjacent directions are applied to calculate the cross correlation function in the method. The proposed method has two advantages over the conventional methods. A reliable correlation coefficient can be obtained as the correlation is always calculated using HRIRs in adjacent directions that are expected to have similar waveforms even when the source is in a shadowed direction. A fractional difference between initial delays can be expressed by up-sampling HRIRs. The ITDs calculated by the proposed method fit well in the plots in the frequency ranges from 2 to 15 kHz for the azimuth of 30° and from 6 to 12 kHz for the azimuth of 60°.

AB - A new estimation method is proposed to improve the accuracy of the interaural time difference (ITD). Head-related impulse responses (HRIR) in adjacent directions are applied to calculate the cross correlation function in the method. The proposed method has two advantages over the conventional methods. A reliable correlation coefficient can be obtained as the correlation is always calculated using HRIRs in adjacent directions that are expected to have similar waveforms even when the source is in a shadowed direction. A fractional difference between initial delays can be expressed by up-sampling HRIRs. The ITDs calculated by the proposed method fit well in the plots in the frequency ranges from 2 to 15 kHz for the azimuth of 30° and from 6 to 12 kHz for the azimuth of 60°.

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KW - HRIR

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An estimation method of interaural time differences from measured head-related impulse responses

Abstract

Keywords

ASJC Scopus subject areas

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