Vehicle electroacoustical transducing

• US 7,164,773 B2
• Filed: 01/09/2001
• Issued: 01/16/2007
• Est. Priority Date: 01/09/2001
• Status: Expired due to Fees

• Current Assignee: Bose Corporation
• Original Assignee: Bose Corporation
• Inventors: Fabry, Michael
• Primary Examiner(s): Tran; Sinh
• Assistant Examiner(s): Briney, III; Walter F
• Application Number:
  US09/757,338
• Publication Number:
  US 20020090093A1
• Time in Patent Office: 2,198 Days
• Field of Search: 381/86, 381/18, 381/302, 381/81, 381/307, 381/119, 381/20, 381/389, 700/94
• US Class Current: 381/86
• CPC Class Codes: H04R 2499/13 Acoustic transducers and sound field adaptation in vehicles
• CPC Class Codes: H04R 5/02 Spatial or constructional arrangements of loudspeakers
• CPC Class Codes: H04S 3/00 Systems employing more than two channels, e.g. quadraphonic H04S5/00, H04S7/00 take precedence

Abstract

An audio system for a vehicle that includes a first passenger location and a second passenger location, the second passenger location situated behind the first passenger location, the audio system including a first directional audio channel signal source; a surround audio channel signal source; a first electroacoustical transducer coupled to the first directional audio signal source and to the surround audio channel source, situated forward of the second passenger location and behind the first passenger location. The first electroacoustical transducer radiates sound waves corresponding to audio signals from the first directional audio channel signal source and corresponding to audio signals from the surround audio channel signal source. The system further includes a second electroacoustical transducer coupled to the first directional audio signal source, situated forward of the first electroacoustical transducer. The second electroacoustical transducer is constructed and arranged for radiating sound waves corresponding to the first directional audio channel signal.

Claims

1. An audio system for a vehicle, said vehicle comprising a first passenger location and a second passenger location, said second passenger location situated behind said first passenger location, said audio system comprising:

a left or right directional audio channel signal source;

a center audio channel signal source;

a left or right surround audio channel signal source;

a first electroacoustical transducer coupled to said left or right directional audio signal source, said center channel signal source, and to said left or right surround audio channel source, the first electroacoustical transducer situated adjacent to a first side of the vehicle behind said first passenger location,

said first electroacoustical transducer constructed and arranged to radiate sound waves corresponding to audio signals from only (i) said left or right directional audio channel signal source, (ii) said center channel signal source, and (iii) said left or right surround audio channel signal source; and

a second electroacoustical transducer coupled to only said left or right directional audio signal source, situated adjacent to the first side of the vehicle and forward of said first electroacoustical transducer,

said second electroacoustical transducer constructed and arranged to radiate sound waves corresponding to audio signals from only said first left or right directional audio channel signal source.

2. An audio system in accordance with claim 1, further comprising a first audio signal scaling device coupling said left or right directional audio channel source and said first electroacoustical transducer,

a second audio signal scaling device coupling said left or right surround audio channel source and said first electroacoustical transducer;

and

a third audio signal scaling device coupling said center audio channel source to said first electroacoustical transducer.

3. An audio system in accordance with claim 1, further comprising a third electroacoustical transducer, situated behind said second passenger location, coupled to said left or right surround channel source,

said third electroacoustical transducer constructed and arranged for radiating sound waves corresponding to audio signals from said left or right surround audio channel signal source.

4. In a vehicle comprising a first passenger location and a second passenger location, said first passenger location situated forward of said second passenger location, a method for operating an audio system having at least a center, left, right, left surround, and right surround audio channel signal, the method comprising:

transmitting a combination of only the center, left or right and left surround or right surround audio channel signals to a first electroacoustical transducer situated adjacent to a first side of said vehicle and behind said first passenger location

and transmitting only said left or right audio channel signal to a second electroacoustical transducer situated adjacent to the first side of said vehicle and forward of said first electroacoustical transducer.

5. A method for operating an audio system in accordance with claim 4, further comprising scaling the amplitude of said center, left or right, and left surround or right surround audio channel signals.

6. A method for operating an audio system in accordance with claim 4, further comprising transmitting only said left surround or right surround audio channel to a third electroacoustical transducer situated behind said second passenger location.

7. An audio system for a vehicle, said vehicle comprising a first passenger location and a second passenger location, said second passenger location situated behind said first passenger location, said audio system comprising:

a center directional audio channel signal source;

a left directional audio channel signal source;

a left surround audio channel signal source;

a first electroacoustical transducer coupled to a combination of only said center directional audio channel signal source, said left directional audio channel signal source, and to said left surround audio channel source, the first electroacoustical transducer located adjacent to a first side of said vehicle and situated behind said first passenger location;

said first electroacoustical transducer constructed and arranged to radiate sound waves corresponding to audio signals from said combination of said center directional channel audio, left directional audio channel signal source, and left surround audio channel signal source;

a second electroacoustical transducer coupled to only said left directional audio signal source, situated adjacent to said first side of the vehicle and forward of said first electroacoustical transducer,

said second electroacoustical transducer constructed and arranged to radiate sound waves corresponding to audio signals from only said left directional audio channel signal source; and

a third electroacoustical transducer, situated in front of said first and second passenger location, coupled to said only center directional audio channel source,

said third electroacoustical transducer constructed and arranged to radiate sound waves corresponding to audio signals from only said center directional audio channel signal source.

8. In a vehicle comprising a first passenger location and a second passenger location, said first passenger location situated forward of said second passenger location, a method for operating an audio system having a left, right, center, left surround and right surround audio channel signal, the method comprising:

transmitting a combination of only the (i) center, (ii) left or right, and (iii) left surround or right surround audio channel signals to a first electroacoustical transducer situated adjacent to a first side of the vehicle and behind said first passenger location;

and transmitting only the left or right audio channel signal to a second electroacoustical transducer situated adjacent to the first side of the vehicle and forward of said first electroacoustical transducer

transmitting only said left or right surround audio channel to a third electroacoustical transducer situated adjacent to a second side of the vehicle and behind said second passenger location.

9. The method of claim 8 wherein the second side of the vehicle is generally perpendicular to the first side of the vehicle.