Multimedia system with pre-stored equalization sets for multiple vehicle environments
First Claim
1. A multi-channel audio system for installation into any of a plurality of acoustically unique vehicle environments, comprising:
- a digital signal processing system for processing source audio signals to generate a plurality of audio output signals to be coupled to audio transducers, said digital signal processing system including a multi-channel equalization filter;
an equalization coefficient memory storing a plurality of equalization characteristic sets, each equalization characteristic set corresponding to a respective one of said vehicle environments; and
a controller for coupling a selected one of said equalization characteristic sets to said multi-channel equalization filter in response to a vehicle environment identification signal.
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Abstract
A multi-channel audio system can be installed into any of a plurality of acoustically unique vehicle environments. A digital signal processing system for processing source audio signals generates a plurality of audio output signals to be coupled to audio transducers, wherein the digital signal processing system includes a multi-channel equalization filter. An equalization coefficient memory stores a plurality of equalization characteristic sets, each equalization characteristic set corresponding to a respective one of the vehicle environments. A controller couples a selected one of the equalization characteristic sets to the multi-channel equalization filter in response to a vehicle environment identification signal.
78 Citations
26 Claims
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1. A multi-channel audio system for installation into any of a plurality of acoustically unique vehicle environments, comprising:
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a digital signal processing system for processing source audio signals to generate a plurality of audio output signals to be coupled to audio transducers, said digital signal processing system including a multi-channel equalization filter;
an equalization coefficient memory storing a plurality of equalization characteristic sets, each equalization characteristic set corresponding to a respective one of said vehicle environments; and
a controller for coupling a selected one of said equalization characteristic sets to said multi-channel equalization filter in response to a vehicle environment identification signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of operating a single model of automotive audio system in a plurality of unique vehicle environments, said method comprising the steps of:
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determining respective sets of equalization coefficients by which said single model of audio system provides respective equalized audio reproduction in each of said plurality of unique vehicle environments when said respective set of equalization coefficients is loaded into an equalization filter in said single model of audio system;
manufacturing a plurality of said single model of audio system, each of said manufactured audio systems having each of said respective sets of equalization coefficients stored therein;
installing a particular one of said manufactured audio systems into a particular vehicle, said particular vehicle having one of said unique vehicle environments;
setting a pointer in said particular one of said manufactured audio systems for identifying a particular one of said respective sets of equalization coefficients corresponding to said particular vehicle; and
each time said particular audio system is turned on, then transferring said particular one of said respective sets of equalization coefficients identified by said pointer to said equalization filter. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification