Title:
Noise reduction system
United States Patent 2972018
US Patent References:
Process of silencing sound oscillations
- - 2043416
Automatic volume control
- - 2420933
Sound system which compensates for variable noise levels
- - 2462532
Noise operated automatic volume control
- - 2501327
Automatic volume control
- - 2616971
Process of silencing sound oscillations
- - 2043416
Automatic volume control
- - 2420933
Sound system which compensates for variable noise levels
- - 2462532
Noise operated automatic volume control
- - 2501327
Automatic volume control
- - 2616971
Inventors:
Hawley, Mones E.
Simshauser, Elvin D.
Simshauser, Elvin D.
Publication Date:
02/14/1961
View Patent Images:
Export Citation:
Assignee:
RCA CORP
Primary Class:
Other Classes:
381/71.130, 381/74, 381/72
International Classes:
H04R3/00
Foreign References:
| FR762121A |