| Presentation | 1997/7/18 A measurement method of an oblique-incidence absorption coefficient of a small-size absorbing material Masaru Okoshi, Norio Shiroko, Hideo Suzuki, Ken'iti Kido, Takahiko Ono, |
|---|---|
| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper proposed a new measurement method of the oblique-incidence sound absorption coefficient using the sound intensity technique and experimentally compares this method to the conventional method using impulsive source signal. The measurement method of the oblique-incidence sound absorption coefficient is not yet standardized because of the difficulty of measurement. In the measurement method already proposed using an impulsive sound as source signal to separate the incident and reflected sound is difficult, especially in the case of large incident angle. In the measurement using a small material, the reflected sound from the outside of material comes to the measurement point. So a large material is necessary in this measurement method. Our method has not such problems and high reliability on the small material is shown by the measurement results. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | oblique-incidence sound absorption coefficient / sound intensity |
| Paper # | EA97-22 |
| Date of Issue |
| Conference Information | |
| Committee | EA |
|---|---|
| Conference Date | 1997/7/18(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Engineering Acoustics (EA) |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A measurement method of an oblique-incidence absorption coefficient of a small-size absorbing material |
| Sub Title (in English) | |
| Keyword(1) | oblique-incidence sound absorption coefficient |
| Keyword(2) | sound intensity |
| 1st Author's Name | Masaru Okoshi |
| 1st Author's Affiliation | ONTEK Co., Ltd() |
| 2nd Author's Name | Norio Shiroko |
| 2nd Author's Affiliation | ONTEK Co., Ltd |
| 3rd Author's Name | Hideo Suzuki |
| 3rd Author's Affiliation | ONTEK Co., Ltd |
| 4th Author's Name | Ken'iti Kido |
| 4th Author's Affiliation | ONTEK Co., Ltd |
| 5th Author's Name | Takahiko Ono |
| 5th Author's Affiliation | ONTEK Co., Ltd |
| Date | 1997/7/18 |
| Paper # | EA97-22 |
| Volume (vol) | vol.97 |
| Number (no) | 179 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |