DocumentCode
1097600
Title
An acoustic lens as a directional microphone
Author
Clark, M.
Author_Institution
Bell Telephone Laboratories, Inc., Murray Hill, N.J.
Issue
1
fYear
1954
Firstpage
5
Lastpage
7
Abstract
An acoustic lens combined with a conical horn can be used to obtain a highly directional microphone without some of the disadvantages of the parabolic microphone. The directional characteristics can be calculated satisfactorily if one assumes that the horn provides uniform flooding of the lens aperture.
Keywords
Acoustic beams; Acoustic transducers; Apertures; Bars; Floods; Frequency; Lenses; Microphones; Microwave devices; Telephony;
fLanguage
English
Journal_Title
Audio, Transactions of the IRE Professional Group on
Publisher
ieee
ISSN
2168-2976
Type
jour
DOI
10.1109/T-SP.1954.28212
Filename
1163769
Link To Document