| Presentation | 2016-05-20 Effects of the second lowest frequency spectral peak in head-related transfer functions on the sound localization for the upper direction in the median plane Kazuhiro Iida, Yohji Ishii, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | It is reported that the parametric head-related transfer function (HRTF) recomposed of only the lowest frequency peak around 4 kHz (P1) and the two lowest frequency notches (N1 and N2) above P1 provided approximately the same localization performance as the measured HRTFs for the front and rear directions. However, for the upper directions, the localization performance for some of the subjects decreased. In the present study, two localization tests were carried out in the upper median plane. The results revealed the following: (1) the localization performance was improved by adding P2 to N1N2P1 at the vertical angles of 90°and 120° (2) the difference in localization error between N1N2P1+P2 and the measured HRTF was less than 10° at all seven target vertical angles; and (3) a sound image was not perceived in the upward direction by reproducing only P2. An observation of the HRTFs revealed that the level of N1 doesn’t exceed the threshold for the notch detection at a vertical angle of 90° However, by adding P2, the relative level of N1 becomes detectable. Therefore, P2 is not a spectral cue, but, by enhancing N1, plays an important role in the localization for the upper directions in the median plane. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | head-related transfer function / sound localization / the median plane / spectral cue / spectral peak / spectral notch |
| Paper # | EA2016-1 |
| Date of Issue | 2016-05-13 (EA) |
| Conference Information | |
| Committee | EA |
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| Conference Date | 2016/5/20(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Chiba Inst. of Tech., Tsudanuma Campus |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Engineering/Electro Acoustics, Education in Acoustics, and Related Topics |
| Chair | Yoichi Haneda(Univ. of Electro-Comm.) |
| Vice Chair | Yukio Iwaya(Tohoku Gakuin Univ.) / Mitsunori Mizumachi(Kyushu Inst. of Tech.) |
| Secretary | Yukio Iwaya(NTT) / Mitsunori Mizumachi(KDDI R&D Labs.) |
| Assistant | Shoichi Koyama(Univ. of Tokyo) |
| Paper Information | |
| Registration To | Technical Committee on Engineering Acoustics |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Effects of the second lowest frequency spectral peak in head-related transfer functions on the sound localization for the upper direction in the median plane |
| Sub Title (in English) | |
| Keyword(1) | head-related transfer function |
| Keyword(2) | sound localization |
| Keyword(3) | the median plane |
| Keyword(4) | spectral cue |
| Keyword(5) | spectral peak |
| Keyword(6) | spectral notch |
| 1st Author's Name | Kazuhiro Iida |
| 1st Author's Affiliation | Chiba Institute of Technology(Chiba Inst. of Tech.) |
| 2nd Author's Name | Yohji Ishii |
| 2nd Author's Affiliation | Chiba Institute of Technology(Chiba Inst. of Tech.) |
| Date | 2016-05-20 |
| Paper # | EA2016-1 |
| Volume (vol) | vol.116 |
| Number (no) | EA-54 |
| Page | pp.pp.1-12(EA), |
| #Pages | 12 |
| Date of Issue | 2016-05-13 (EA) |