Vehicle sound system

Details Vehicle sound system Vehicle sound system

2003-01-08

2008-11-25

Mei, Xu (Department: 2615)

Electrical audio signal processing systems and devices

Binaural and stereophonic

Stereo speaker arrangement

C381S300000, C381S389000

Reexamination Certificate

active

07457425

ABSTRACT:
A vehicle sound system encompasses a combination of speaker configuration, speaker placement, and sound processing to improve sound quality. A pair of speakers (or rows of speakers) are placed close together and located in the front of the console or dashboard with their geometric center on or near the vehicle's central axis. A sound processor acts to “spread” the sound image produced by the two closely spaced speakers by employing a cross-cancellation technique in which the cancellation signal is derived from the difference between the left and right channels. The resulting difference signal is scaled, delayed (if necessary), and spectrally modified before being added in opposite polarities to the left and right channels. The pair of speakers may be placed on a common baffle or mounting surface or in a common housing enclosure, with sound being carried through one or more ducts and emanating out of a slot.

REFERENCES:
patent: 2440078 (1948-04-01), Devine
patent: 3371742 (1968-03-01), Norton et al.
patent: 3617654 (1971-11-01), Heidrich
patent: 4016953 (1977-04-01), Butler
patent: 4029170 (1977-06-01), Phillips
patent: 4131179 (1978-12-01), Pope
patent: 4308423 (1981-12-01), Cohen
patent: 4334593 (1982-06-01), Sechrist
patent: 4398619 (1983-08-01), Daniel
patent: 4509184 (1985-04-01), Yanagawa
patent: 4574906 (1986-03-01), White et al.
patent: 4620317 (1986-10-01), Anderson
patent: 4628528 (1986-12-01), Bose et al.
patent: 4837839 (1989-06-01), Andrews
patent: 4846382 (1989-07-01), Foultner et al.
patent: 5036946 (1991-08-01), Yoshino
patent: 5067159 (1991-11-01), Kasai et al.
patent: 5115470 (1992-05-01), Sutheim
patent: 5138526 (1992-08-01), Chung Hsiang
patent: 5199075 (1993-03-01), Fosgate
patent: 5225639 (1993-07-01), Kobayashi et al.
patent: 5253301 (1993-10-01), Sakamoto et al.
patent: 5306880 (1994-04-01), Coziar et al.
patent: 5400408 (1995-03-01), Lundgren et al.
patent: 5432860 (1995-07-01), Kasajima et al.
patent: 5451726 (1995-09-01), Haugum
patent: 5471018 (1995-11-01), Nieuwendijk et al.
patent: 5561717 (1996-10-01), Lamm
patent: 5590208 (1996-12-01), Koyano et al.
patent: 5610992 (1997-03-01), Hickman
patent: 5657391 (1997-08-01), Jyosako
patent: 5661808 (1997-08-01), Klayman
patent: 5677957 (1997-10-01), Hulsebus
patent: 5727066 (1998-03-01), Elliott et al.
patent: 5749433 (1998-05-01), Jackson
patent: 5862227 (1999-01-01), Orduna-Bustamante et al.
patent: 5870484 (1999-02-01), Greenberger
patent: 5870485 (1999-02-01), Lundgren et al.
patent: 5902023 (1999-05-01), Yu et al.
patent: 5929393 (1999-07-01), Jeter, Jr.
patent: 5930376 (1999-07-01), Markow et al.
patent: 5943431 (1999-08-01), Weiss et al.
patent: 5949894 (1999-09-01), Nelson et al.
patent: 6198826 (2001-03-01), Cowieson et al.
patent: 6307947 (2001-10-01), Wiener
patent: 6363157 (2002-03-01), Chick
patent: 6771787 (2004-08-01), Hoefler et al.
patent: 2002/0085731 (2002-07-01), Aylward
patent: 2002/0153193 (2002-10-01), Toki
patent: 2002/0154783 (2002-10-01), Fincham
patent: 2005/0129258 (2005-06-01), Fincham
patent: 0404 117 (1990-12-01), None
patent: 2 074 823 (1981-11-01), None
patent: 52-004202 (1977-01-01), None
patent: 56-016400 (1981-02-01), None
patent: 56-162600 (1981-12-01), None
patent: 63-502945 (1988-10-01), None
patent: 64-018396 (1989-01-01), None
patent: 04-137994 (1992-05-01), None
patent: 05-014993 (1993-01-01), None
patent: 08-154300 (1996-06-01), None
patent: 11-252698 (1999-09-01), None
patent: 11-318000 (1999-11-01), None
patent: 2000-078700 (2000-03-01), None
patent: WO 87/06090 (1987-10-01), None
patent: WO 94/01981 (1994-01-01), None
patent: WO 00/25618 (2000-05-01), None
patent: WO 00/67522 (2000-11-01), None
Lopez, Jose, et al., “3-D Audio With Dynamic Tracking For Multimedia Environtments,” Universidad Politecnica de Valencia, Departamento de Comunicaciones, Grao de Gandia, Spain, 2ndCOST-G6 Workshop on Digital Audio Effects (DAFx99), Dec. 9-11, 1999, Trondheim, Norway.
Brown, C. Phillip, et al., “A Structural Model for Binaural Sound Synthesis,” IEEE Transactions on Speech and Audio Processing, vol. 6, No. 5, Sep. 1998.
Jost, Adrian, et al., “Transaural 3-D With User-Controlled Calibration,” Proceedings of the COST G-6 Conference on Digital Audio Effects (DAFX-00), Verona, Italy, Dec. 7-9, 2000.
Jot, Jean-Marc, “Synthesizing Three-Dimensional Sound Scenes in Audio or Multimedia Production and Interactive Human-Computer Interfaces,” 5thInternational Conference: Interface to Real & Virtual Worlds, Montpellier, France, May 1996.
Kyriakakis, Chris, “Fundamental and Technological Limitations of Immersive Audio Systems,” Proceedings of the IEEE, vol. 86, No. 5, May 1998.
Kendall, Gary S., “A 3D Sound Primer,” Center for Music Technology, School of Music, Northwestern University, printout from website (www.northwestern.edu/musicschool/classes/3D/pages/sndPrmGK.html), printed Jan. 4, 2002.
Soebo, Asbjorn, “Effect of Early Reflections in Binaural Systems With Loudspeaker Reproduction,” Acoustics Group, Department of Telecommunications, Norwegian University of Science and Technology (NTNU), Proc. 1999 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, New Paltz, New York, Oct. 17-20, 1999.
Zurek, P.M., “The Precedence Effect,”Directional Hearing, Springer-Verlag, New York, 1987, pp. 85-105.
Trahiotis, Bernstein, “Some Modern Techniques and Devices Used to Preserve and Enhance the Spatial Qualities of Sound,”Directional Hearing, Springer-Verlag, New York, 1987, pp. 279-290.
“Virtual Acoustics Project,” Institute of Sound and Vibration Research, University of Southampton, printout from website (www.isvr.soton.ac.uk/FDAG/vap/), Feb. 4, 1998.
Kahana, et al, “Multi-Channel Sound Reproduction using a Four-Ear Dummy-Head,” presented at the 102ndAudio Engineering Society Convention, Mar. 22-25, 1997, Munich, Germany.
Kahana, et al, “Objective and Subjective Assessment of Systems for the Production of Virtual Acoustic Images for Multiple Listeners,” presented at the 102ndAudio Engineering Society Convention, Mar. 22-25, 1997, Munich, Germany.
Kahana, et al, “A Multiple Microphone Recording Technique for the Generation of Virtual Acoustic Images,” Journal of the Acoustical Society of America, vol. 105, No. 3, Mar. 1999, pp. 1503-1516.
Kirkeby, et al, “Local Sound Field Reproduction using Digital Signal Processing,” Journal of the Acoustical Society of America, vol. 100, No. 3, Sep. 1996, pp. 1584-1593.
Kirkeby, et al, “Virtual Source Imaging Over Loudspeakers,” Proceedings of the Institute of Acoustics, vol. 19: Part 6, 1997.
Kirkeby, et al, “The ‘Stereo Dipole’: Binaural Sound Reproduction using Two Closely Spaced Loudspeakers,” presented at the 102ndAudio Engineering Society Convention, Mar. 22-25, 1997, Munich, Germany.
Kirkeby, et al, “Acoustic Fields Generated by Virtual Source Imaging Systems,” Proceedings of Active 97, The 1997 International Symposium on Active Control of Sound and Vibration, Aug. 21-23, 1997, Budapest, Hungary, pp. 941-954.
Nelson, et al, “Adaptive Inverse Filters for Stereophonic Sound Reproduction,” IEEE Transactions on Signal Processing, vol. 40, No. 7, Jul. 1992, pp. 1621-1632.
Nelson, P. A., “Active Control of Acoustic Fields and the Reproduction of Sound,” Journal of Sound and Vibration, vol. 177, No. 4, Nov. 3, 1994, pp. 447-477.
Nelson, et al, “Inverse Filter Design and Equalization Zones in Multichannel Sound Reproduction,” IEEE Transactions on Speech and Audio Processing, vol. 3, No. 3, May 1995, pp. 185-192.
Nelson, et al, “Multichannel Signal Processing Techniques in the Reproduction of Sound,” Journal of the Audio Engineering Society, vol. 44, No. 11, Nov. 1996, pp. 973-989.
Nelson, et al, “Experiments on a System for the Synthesis of Virtual Acoustics Sources,” Journal of the Audio Engineering

Affiliated with

Also associated with

Rating

Vehicle sound 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 Vehicle sound system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vehicle sound system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4026182