OSA's Digital Library

Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 22, Iss. 21 — Nov. 1, 1983
  • pp: 3411–3413

Optical direct analog-to-digital conversion for microphones

Hitoshi Mada and Katsuo Koide  »View Author Affiliations


Applied Optics, Vol. 22, Issue 21, pp. 3411-3413 (1983)
http://dx.doi.org/10.1364/AO.22.003411


View Full Text Article

Enhanced HTML    Acrobat PDF (323 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

Acoustic pressure is directly converted to a parallel 3-bit binary code using optical interference. Since the diaphragm deforms sinusoidally when pressure is applied, the interference is different from point to point on the diaphragm. We simultaneously detected the interference intensity at an adequate sampling of three points. A quantized bit plane is produced in parallel without scanning. The dynamic range is ±240 Pa, and good linearity is obtained. This method can be used to measure other quantities such as temperature and voltage.

© 1983 Optical Society of America

History
Original Manuscript: June 3, 1983
Published: November 1, 1983

Citation
Hitoshi Mada and Katsuo Koide, "Optical direct analog-to-digital conversion for microphones," Appl. Opt. 22, 3411-3413 (1983)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-22-21-3411

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited