Electrical audio signal processing systems and devices – Acoustical noise or sound cancellation – Counterwave generation control path
Patent
1995-11-29
1997-09-09
Kuntz, Curtis
Electrical audio signal processing systems and devices
Acoustical noise or sound cancellation
Counterwave generation control path
381 72, 381 941, 381 96, A61F 1106, H03B 2900
Patent
active
056664273
ABSTRACT:
A method of and an apparatus for controlling noise generated in a confined space, being capable of reducing a radiating sound pressure generated from a main noise source to that of an optimal state. The method includes the steps of measuring the radiating sound pressure generated from the noise source, and generating, from an additional sound source, a radiating sound pressure having the same magnitude as the radiating sound pressure generated from the noise source while having a phase 180.degree.-shifted from that of the noise source's radiating sound pressure so that the radiating sound pressures can offset each other when they are mixed. The apparatus includes an additional sound source installed in the confined space, an intensity converter for collecting and measuring sound pressure signals respectively generated from the noise source and the additional sound source, and a microcomputer for applying, to the additional sound source, a control signal for reducing the noise on the basis of the sound pressure signals measured by the intensity converter.
REFERENCES:
patent: 2736711 (1956-02-01), Hanson et al.
patent: 4562589 (1985-12-01), Warnaka et al.
Kang Seong Woo
Kim Won Young
Kim Yang Han
Kuntz Curtis
Nguyen Duc
Samsung Heavy Industries Co. Ltd.
LandOfFree
Method of and apparatus for controlling noise generated in confi does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of and apparatus for controlling noise generated in confi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of and apparatus for controlling noise generated in confi will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-74960