Audio playback system

Details Audio playback system Audio playback system

2007-05-28

2011-11-29

Nguyen, Dao H (Department: 2818)

Electrical audio signal processing systems and devices

Vehicle

C381S017000, C381S092000, C381S300000, C381S302000, C381S316000, C700S094000

Reexamination Certificate

active

08068617

ABSTRACT:
Provided is an audio playback system, which reduces a restriction on a place of installation and which reduces the dispersion of characteristics of sound pressures in a low frequency range due to the seats in a passenger interior of a vehicle so that a comfortable bass sound can be enjoyed at any seat. The audio playback system comprises a first filter (108), to which an audio signal outputted from a playback apparatus (107) is inputted, configured to pass a frequency band lower than a first-order resonance frequency of the passenger interior of the vehicle, a first sub-woofer (104) configured to receive an output signal of the first filter (108), a second filter (109), to which the audio signal from the playback device (107) is inputted, configured to pass a frequency band including the first-order resonance frequency of the interior, and a second sub-woofer (105), to which an output signal of the second filter (109) is inputted, configured to be installed near a node of a first-order resonance mode of the interior.

REFERENCES:
patent: 7477755 (2009-01-01), Saiki et al.
patent: 7760890 (2010-07-01), Furge et al.
patent: 2004/0252844 (2004-12-01), Christensen et al.
patent: 2006/0098827 (2006-05-01), Paddock et al.
patent: 53-135303 (1978-11-01), None
patent: 1-137800 (1989-05-01), None
patent: 4-207499 (1992-07-01), None
patent: 4-299697 (1992-10-01), None
patent: 4-299697 (1992-10-01), None
patent: 7-131884 (1995-05-01), None
patent: 8-331682 (1996-12-01), None
Japan Office action, mail date is Jul. 5, 2011.
English language Abstract of JP 7-131884 A.

Affiliated with

Also associated with

Rating

Audio playback system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Audio playback system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Audio playback system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4287999