Sound generation using photoacoustic effect

Kaoru Yamabe*, Yasuhiro Oikawa, Yoshio Yamasaki

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review


It is highly important to generate a point sound source in mid air for several applications such as virtual realty and precise acoustic measurement since most of acoustic theories are based on a point sound source. One possible solution for generating a point sound source in mid air is the photoacoustic effect that generates sounds from the alternate-current components of air expansion due to the heat generated by light absorption of a material when light modulated with acoustic signal is radiated to a material. To apply this method to molecule of gases in mid air, it is possible to generate a point sound source in mid air. Thus, for the first step to realize this possibility, this paper attempt to confirm that it is possible to generate audible sounds using the photoacoustic effect. In particular, this paper describes the sound generation using a charcoal that has high absorptive power and a halogen lamp that can produce high intensity infrared light, which is easier, absorbed by gas molecules than visible light.

Original languageEnglish
Article number030114
JournalProceedings of Meetings on Acoustics
Publication statusPublished - 2013
Externally publishedYes
Event21st International Congress on Acoustics, ICA 2013 - 165th Meeting of the Acoustical Society of America - Montreal, QC, Canada
Duration: 2013 Jun 22013 Jun 7

ASJC Scopus subject areas

  • Acoustics and Ultrasonics


Dive into the research topics of 'Sound generation using photoacoustic effect'. Together they form a unique fingerprint.

Cite this