Sound correction system, recording medium on which a sound...

Details Sound correction system, recording medium on which a sound... Sound correction system, recording medium on which a sound...

2006-06-06

2006-06-06

Pendleton, Brian T. (Department: 2644)

Electrical audio signal processing systems and devices

Vehicle

C381S057000, C381S098000, C381S103000, C381S107000

Reexamination Certificate

active

07058183

ABSTRACT:
The object of this invention is to obtain the optimum music level by separately and independently performing the sound correction for the high-frequency range and low-frequency range according to the noise level. The invention comprises: a memory unit in which high-frequency-correction-level information, corresponding to the vehicle speed and music level, and low-frequency-correction-level information, corresponding to the low-frequency noise/music level ratio, are stored; a high-frequency-correction-level-information-acquisition unit that obtains high-frequency-correction-level information based on the vehicle speed and music level; and a low-frequency-correction-level-information-acquisition unit that obtains low-frequency-correction-level information based on the low-frequency noise/music level ratio; and it corrects the sound by a sound-quality-adjustment unit based on the high-frequency-correction-level information and low-frequency-correction-level information.

REFERENCES:
patent: 4641344 (1987-02-01), Kasai et al.
patent: 5208866 (1993-05-01), Kato et al.
patent: 5872852 (1999-02-01), Dougherty
patent: 7-94985 (1995-04-01), None

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