Title :
A Piezo-Electric Loud Speaker for the Higher Audio Frequencies
Author :
Ballantine, Stuart
Author_Institution :
Boonton Research Corporation, Boonton, New Jersey
Keywords :
Capacitive sensors; Crystalline materials; Crystals; Frequency; Hysteresis; Instruments; Loudspeakers; Music; Speech recognition; Temperature dependence;
Journal_Title :
Radio Engineers, Proceedings of the Institute of
DOI :
10.1109/JRPROC.1933.227459
