H - Electricity – 03 – G
Patent
H - Electricity
03
G
179/2
H03G 5/16 (2006.01)
Patent
CA 1278527
ABSTRACT This invention relates to automotive sound systems, and particularly to a system which employs psychoacoustic contouring of the program material signal, based upon the hearing char- acteristics of the human ear. The invention is used in a sound system comprising a source of program material, a first transducer, and circuitry for coupling the first transducer to the source to produce an audible signal related to the program material. The improvement of the invention comprises a variable bass contour control network, a power amplifier, a second transducer and a control circuit. The variable bass contour control network is coupled to the program material source and the power amplifier. The second transducer and the control circuit are coupled to the power amplifier. The control circuit is coupled to the variable bass contour control network, the control circuit controlling the contour of the signal supplied from the program material source through the variable bass contour control network to the power amplifier based upon the signal provided by the power amplifier to the control circuit.
512969
Harman International Industries Incorporated
Oyen Wiggs Green & Mutala Llp
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