抄録
This paper presents a sound field measurement method utilizing light scattering. Since the intensity of scattered light is proportional to density of scatterers, the fluctuation of air density, which is corresponding to sound pressure, can be acquired by observing the light scattered by air particles. The light scattered in the sound field, therefore, includes the sound information in its intensity. The measurement apparatus is composed of a pulsed laser, a telescope and a photo-multiplier tube (PMT). The backscattered light is collected by the telescope and detected by the PMT. Using the pulsed laser and detecting the backscattered light enable to acquire sound quantity of an arbitrary point on optical light path by controlling signal acquisition timing. The results of the fundamental experiments confirm a validity of this method.
本文言語 | English |
---|---|
ホスト出版物のタイトル | Proceedings of Forum Acusticum |
出版社 | European Acoustics Association, EAA |
巻 | 2014-January |
ISBN(印刷版) | 9788361402282 |
出版ステータス | Published - 2014 |
イベント | 7th Forum Acusticum, FA 2014 - Krakow, Poland 継続期間: 2014 9月 7 → 2014 9月 12 |
Other
Other | 7th Forum Acusticum, FA 2014 |
---|---|
国/地域 | Poland |
City | Krakow |
Period | 14/9/7 → 14/9/12 |
ASJC Scopus subject areas
- 音響学および超音波学