Title:
NOISE REDUCING DEVICE FOR SOUND CINEMA APPARATUS
Document Type and Number:
Japanese Patent JPS5357033
Kind Code:
A
Abstract:
PURPOSE: To reduce the low frequency component of an induction hum, without exerting large influences upon the auditory sense of reproduced sound, by automatically adjusting the mu-factor of the low frequency component in accordance with the signal output level of a magnetic head.
Inventors:
TAKAHASHI KIYOSHI
KOUTANI YUTAKA
KOUTANI YUTAKA
Application Number:
JP13261176A
Publication Date:
May 24, 1978
Filing Date:
November 04, 1976
Export Citation:
Assignee:
CANON KK
International Classes:
G03B31/00; G03B31/02; (IPC1-7): G03B31/02