Method for automatically adjusting the filter parameters of...

Details Method for automatically adjusting the filter parameters of... Method for automatically adjusting the filter parameters of...

2007-10-30

2007-10-30

Chin, Vivian (Department: 2615)

Electrical audio signal processing systems and devices

Including frequency control

Having automatic equalizer circuit

C381S098000

Reexamination Certificate

active

10467190

ABSTRACT:
A method is proposed for automatically adjusting the filter parameters—center frequency, quality and amplification or attenuation—of at least one digital equalizer which is a component of a reproduction device for audio signals in a vehicle passenger compartment. To that end, first of all, the acoustical frequency response of the passenger compartment is ascertained. The inadequacies in the acoustics of the passenger compartment in the form of local maxima and minima in the measured frequency response are then determined. On this basis, the filter parameters are adjusted automatically so that at least a portion of these inadequacies is compensated. A reproduction device for audio signals for implementing this method is also proposed.

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