Electrical audio signal processing systems and devices – Acoustical noise or sound cancellation – Adjacent ear
Patent
1995-01-30
1997-01-28
Isen, Forester W.
Electrical audio signal processing systems and devices
Acoustical noise or sound cancellation
Adjacent ear
381 86, 181210, 181224, 181271, 181286, G10K 1116
Patent
active
055984797
ABSTRACT:
A device for reducing certain sound ranges of tire/road surface noise of a motor vehicle includes sound absorbers in the form of resonators positioned at the inner wall of a wheel well of the vehicle in the area of sound projection of the tire/road surface noise. The device has an electronic control device for receiving a signal preferably derived from an ABS system in the form of the wheel rpm. The control device adjusts the resonators according to the number of tread blocks of the tire, the sound emission characteristics, and the wheel rpm. In another embodiment the electronic control device is supplied with signals received from a sound receiver that records the course over time of the sound pressure. The control device adjusts the resonators such that the measured sound pressure signal is minimized. In another alternative the device has a data processing unit including an electronic control device. The control device is supplied with a signal from sound receiving devices that record the course over time of the sound pressure. The data processing unit together with an adjusting device adjusts the resonators such that the measured sound pressure signal for selected frequency ranges is minimized.
REFERENCES:
patent: 5394478 (1995-02-01), Hathaway et al.
Dodt Thomas
Gauterin Frank
Huinink Heinrich
Roik Geert
Schulze Thomas
Continental Aktiengesellschaft
Isen Forester W.
LandOfFree
Device for reducing tire/road surface noise does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for reducing tire/road surface noise, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for reducing tire/road surface noise will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-946393