Vehicle audio system surround modes
First Claim
1. A front/rear fade system for a multi-channel surround sound audio system for a vehicle,the surround sound audio system comprising a plurality of loudspeakers comprising front loudspeakers, intermediate loudspeakers, and rear loudspeakers, the front/rear fade system comprising:
- a first operating mode in which extreme “
front” and
“
rear”
positions of a fade control bias a relative amplitude of acoustic radiation respectively toward a front of a listening area or a rear of the listening area by varying relative amplitudes of output of each of the front loudspeakers, intermediate loudspeakers, and rear loudspeakers according to the position of the fade control, anda second operating mode in which the extreme “
front” and
“
rear”
positions of the fade control bias the relative amplitude of the acoustic radiation respectively toward an intermediate position of the listening area or the rear of the listening area by holding the amplitude of the output of the front loudspeakers constant for any position of the fade control and varying the relative amplitudes of output of each of the intermediate loudspeakers and rear loudspeakers according to the position of the fade control.
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Accused Products
Abstract
A surround audio system for a vehicle with a plurality of operating modes. The vehicle includes seating locations. The audio system includes a plurality of input channels including surround channels. The audio system further includes a plurality of operating modes. A first operating mode is characterized by substantially equal perceived loudnesses at each of said seating locations, an equalization pattern developed by weighting frequency responses at each of said seating locations substantially equally, and a balance pattern developed by weighting sound pressure level measurements at each of said seating locations substantially equally. A second operating mode is characterized by greater perceived loudness at one of said seating locations than at the other seating locations, an equalization pattern developed by weighting the frequency response at said one of said seating locations more heavily than the frequency responses at said other seating locations, and a balance pattern developed by weighting sound pressure level measurements at said one seating location more heavily than the weightings as said other seating locations.
45 Citations
9 Claims
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1. A front/rear fade system for a multi-channel surround sound audio system for a vehicle,
the surround sound audio system comprising a plurality of loudspeakers comprising front loudspeakers, intermediate loudspeakers, and rear loudspeakers, the front/rear fade system comprising: -
a first operating mode in which extreme “
front” and
“
rear”
positions of a fade control bias a relative amplitude of acoustic radiation respectively toward a front of a listening area or a rear of the listening area by varying relative amplitudes of output of each of the front loudspeakers, intermediate loudspeakers, and rear loudspeakers according to the position of the fade control, anda second operating mode in which the extreme “
front” and
“
rear”
positions of the fade control bias the relative amplitude of the acoustic radiation respectively toward an intermediate position of the listening area or the rear of the listening area by holding the amplitude of the output of the front loudspeakers constant for any position of the fade control and varying the relative amplitudes of output of each of the intermediate loudspeakers and rear loudspeakers according to the position of the fade control. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification