| Presentation | 2003/6/19 A Study of distance perception using cue of direct and reverberant ratio for 3D Audio reproduction Yasushige NAKAYAMA, Satoshi KUWATA, Kaoru WATANABE, Yoshinori IZUMI, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In the 3D audio image controlling method, which controls the input level of the loudspeakers arranged near and far away, a subjective evaluation was performed by examining the relative distance perception of octave band noise by direct and reverberation ratio energy. It was found that the distance perceived by the direct and reverberation ratio has frequency dependency, and that the distance perceived for 5,660 Hz or more is not significantly different from that perceived when the ratio is changed. The frequency dependency of distance perception was also used to examine the bit efficiency and validity of the 3-dimensional audio coding method which unifies the zone that does not influence awareness of distance. Tests using the 3-dimensional audio coding method which combines 5,660 Hz or more frequency components showed that the bit-rate efficiency can be increased by about 34% compared with that by dual mono AAC coding, without any degradation of 3D audio reproduction. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Distance Perception / Reverberant / Direct and Reverberant Ratio / 3D Audio Coding / 3D Audio reproduction |
| Paper # | SP2003-39 |
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| Conference Information | |
| Committee | SP |
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| Conference Date | 2003/6/19(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Paper Information | |
| Registration To | Speech (SP) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study of distance perception using cue of direct and reverberant ratio for 3D Audio reproduction |
| Sub Title (in English) | |
| Keyword(1) | Distance Perception |
| Keyword(2) | Reverberant |
| Keyword(3) | Direct and Reverberant Ratio |
| Keyword(4) | 3D Audio Coding |
| Keyword(5) | 3D Audio reproduction |
| 1st Author's Name | Yasushige NAKAYAMA |
| 1st Author's Affiliation | Advanced Audio and Video Coding, NHK STRL() |
| 2nd Author's Name | Satoshi KUWATA |
| 2nd Author's Affiliation | RD Division, Shibaura Institute of Technology |
| 3rd Author's Name | Kaoru WATANABE |
| 3rd Author's Affiliation | Advanced Audio and Video Coding, NHK STRL |
| 4th Author's Name | Yoshinori IZUMI |
| 4th Author's Affiliation | Advanced Audio and Video Coding, NHK STRL |
| Date | 2003/6/19 |
| Paper # | SP2003-39 |
| Volume (vol) | vol.103 |
| Number (no) | 154 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |