Inventor

BERKLEY DAVID A

US2 patents

Patents

2 patents

US4166924ASep 4, 1979

Removing reverberative echo components in speech signals

BELL TELEPHONE LABOR INC67 citations87

US4429189AJan 31, 1984

Electret transducer with a selectively metalized backplate

BELL TELEPHONE LABOR INC4 citations60