1

Ear microphone

Year:
1986
Language:
english
File:
PDF, 159 KB
english, 1986
2

Acceleration vibration detector

Year:
1985
Language:
english
File:
PDF, 250 KB
english, 1985
3

Bone conduction microphone mount

Year:
1994
Language:
english
File:
PDF, 85 KB
english, 1994