Optical Microphone

Dobrucki A, Pruchnicki P. Optical Microphone. In: AES Convention 96. Audio Engineering Society; 1994. Paper 3839. Available from: https://aes.org/publications/elibrary-page/?id=6393

@inproceedings{Dobrucki1994_6393,
  author = {Dobrucki, Andrzej and Pruchnicki, Piotr},
  title = {{Optical Microphone}},
  booktitle = {AES Convention 96},
  note = {Paper 3839},
  year = {1994},
  month = feb,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=6393}
}

TY  - CPAPER
TI  - Optical Microphone
AU  - Dobrucki, Andrzej
AU  - Pruchnicki, Piotr
T2  - AES Convention 96
M1  - Paper 3839
PY  - 1994
DA  - 1994/02/06
UR  - https://aes.org/publications/elibrary-page/?id=6393
PB  - Audio Engineering Society
LA  - en
AB  - A concept of a new microphone which transforms vibrations of a diaphragm to electric signal via a light beam is presented. A light beam coming from a semiconductor laser is focused on the membrane and after reflection it is directed to a photodetector. The photodetector consists of two pairs of photoelements. If the diaphragm does not vibrate the photoelements are lightened uniformly. If the diaphragm is deflected one pair of photoelements is lightened more than the other one and the difference in lighting is proportional to the membrane deflection. A model of such microphone was constructed with the use of an optical system from a CD player.
ER  -