On-vehicle audio system reproducing bodily-sensible sounds

Details On-vehicle audio system reproducing bodily-sensible sounds On-vehicle audio system reproducing bodily-sensible sounds

1993-04-23

1994-10-11

Isen, Forester W.

Electrical audio signal processing systems and devices

Vehicle

381 57, 381107, H04B 100

Patent

active

053554191

ABSTRACT:
An on-vehicle audio system reproducing bodily-sensible sounds is devised to rapidly eliminate masking of bodily-acoustic audio sounds caused by vibrations of a running vehicle and generate bodily-sensible sounds without giving an inharmonious feeling to the listener. The system has a low pass filter for extracting only low frequency band components of an input signal, an amplifier for amplifying the output of the low pass filter and delivering the amplified signal, a vibration unit disposed in a seat of the vehicle for converting the amplified signal to mechanical vibrations. To eliminate the masking, the system is provided with a vibration sensor for generating a vibration signal of a magnitude in accordance with vibrations of the vehicle, and a level adjusting unit for adjusting the level of the input signal in accordance with an average level of the vibration signal.

REFERENCES:
patent: 4641344 (1987-02-01), Kasai et al.
patent: 4864246 (1989-09-01), Kato et al.
patent: 5034984 (1991-07-01), Bose
patent: 5035235 (1991-07-01), Chesky
patent: 5245664 (1993-09-01), Kinoshite et al.

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