共 4 条
[1]
COLLARD J, 1932, ELECTR COMMUN, V10, P140
[3]
An efficient miniature condenser microphone system
[J].
BELL SYSTEM TECHNICAL JOURNAL,
1932, 11
:451-461
[4]
A voice and ear for telephone measurements
[J].
BELL SYSTEM TECHNICAL JOURNAL,
1932, 11
:293-317