Inventor
TOTSUKA KAORU
5 patents
Patents
5 patentsUS4399327AAug 16, 1983
Variable directional microphone system
VICTOR COMPANY OF JAPAN62 citations95
US4363007ADec 7, 1982
Noise reduction system having series connected low and high frequency emphasis and de-emphasis filters
VICTOR COMPANY OF JAPAN82 citations95
US4354059AOct 12, 1982
Variable-directivity microphone device
VICTOR COMPANY OF JAPAN50 citations92
US4412097AOct 25, 1983
Variable-directivity microphone device
VICTOR COMPANY OF JAPAN13 citations73
US4449106AMay 15, 1984
Noise reducing apparatus
VICTOR COMPANY OF JAPAN12 citations72