並列タイトル等レーザ ハッシン トクセイ ト レーザ マイクロホン ノ オンパ ケンシュツ トクセイ ノ ケンキュウ
Study on the sound wave detection characteristic of a laser microphone on laser spectrum
タイトル(掲載誌)愛知工業大学研究報告 = Bulletin of Aichi Institute of Technology
一般注記Since the vibrating film is used for a conventional microphone, the detectable frequency is restricted. Recently, the influence on the human body by the sound wave of low frequency or high frequency from various apparatuses or equipments has become a problem. It is necessary to detect the sound wave of such frequency. A new type of microphone by using self-coupling effect of semiconductor laser has been studied. It is called the laser microphone. This microphone consists of laser and a light reflector, and it is not necessary to post-process a signal. Difference in coherence reflects on the sensitivity of the laser microphone. Therefore spectrum of laser is measured. It is understood that the laser microphone becomes sensitive if coherence is better and light power is higher. The laser microphone can detect a sound with frequency to 24 kHz.
identifier:http://repository.aitech.ac.jp/dspace/handle/11133/2750
連携機関・データベース国立情報学研究所 : 学術機関リポジトリデータベース(IRDB)(機関リポジトリ)