Title :
Loudspeakers and microphones
Author_Institution :
Bolt Beranek and Newman Inc., Cambridge, Mass.
Abstract :
This paper covers the development of loudspeakers and microphones and gives many illustrations of commercially available units dating from 1915 to the present time.
Keywords :
Current; Electrodynamics; Electronics industry; Electrostatics; Headphones; Loudspeakers; Magnetostriction; Manufacturing industries; Microphones; Telephony;
Journal_Title :
Audio, Transactions of the IRE Professional Group on
DOI :
10.1109/TAU.1955.1165394
