| Presentation | 2004/4/16 The Transfer Function Phase and the Distance from a Sound Source in a 3D Reverberation Yoshinori TAKAHASHI, Mikio TOHYAMA, Takashi MANABE, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper investigates the phase characteristics in a 3D reverberant field when sound receiving points are located close to the sound source. The propagation phase, which Lyon estimated as the direct field in a reverberant field, was extracted by taking a linear regression method for the phase spectrum of the minimum-phase components in the narrow-band transfer functions. Consequently range and frequency dependence of the propagation phase could be evaluated in a 3D reverberant field. The range dependence of the propagation phase is comparable to the extent of the coherent region in a 3D field defined by Morse et al. The frequency dependence, however, might be related to not only the sound field conditions but to the sampling frequency because of minimum-phase phase property of the discrete transfer function. These results will give us a theoretical and experimental basis for waveform recovery and control for system diagnosis under reverberant conditions. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Room Acoustics / Sound Field / Minimum-Phase / Transfer Function / Acoustics Signal Processing |
| Paper # | EA2004-3 |
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| Conference Information | |
| Committee | EA |
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| Conference Date | 2004/4/16(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Engineering Acoustics (EA) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | The Transfer Function Phase and the Distance from a Sound Source in a 3D Reverberation |
| Sub Title (in English) | |
| Keyword(1) | Room Acoustics |
| Keyword(2) | Sound Field |
| Keyword(3) | Minimum-Phase |
| Keyword(4) | Transfer Function |
| Keyword(5) | Acoustics Signal Processing |
| 1st Author's Name | Yoshinori TAKAHASHI |
| 1st Author's Affiliation | Global Information and Telecommunication Studies(Institute), Waseda University() |
| 2nd Author's Name | Mikio TOHYAMA |
| 2nd Author's Affiliation | Global Information and Telecommunication Studies(Institute), Waseda University |
| 3rd Author's Name | Takashi MANABE |
| 3rd Author's Affiliation | Fujii Sound Techno CO., LTD |
| Date | 2004/4/16 |
| Paper # | EA2004-3 |
| Volume (vol) | vol.104 |
| Number (no) | 29 |
| Page | pp.pp.- |
| #Pages | 4 |
| Date of Issue | |