Electrical audio signal processing systems and devices – Including frequency control – Having automatic equalizer circuit
Patent
1994-04-19
1996-12-03
Kuntz, Curtis
Electrical audio signal processing systems and devices
Including frequency control
Having automatic equalizer circuit
381 98, H03G 500
Patent
active
055816215
ABSTRACT:
A system for automatically adjusting an audio system with a programmable parametric equalizer includes an audio analysis unit that can be connected to the audio unit. The parametric equalizer adjusts the frequency response of the audio system in response to equalizer data stored in the audio system. The audio analysis unit generates various reference signals and applies the reference signals selectively to separate channels of the audio system. A microphone picks up audible output of the audio system as the parametric equalizer corrects it and the audio system outputs the reference signal. The audio analysis unit, by giving directions to a user or by directly programmably addressing the audio system, changes the equalizer data, amplifier gain, polarity of speaker connections and other parameters responsively to the output picked up by the microphone. The audio analysis unit also includes a floppy disk drive to store the results of the adjustments. If the adjustment data is lost, it can be restored from the stored copy made by the audio analysis unit. Through the present invention, a sophisticated audio system can be set up in a short period of time.
REFERENCES:
patent: 5060272 (1991-10-01), Suzuki
patent: 5239586 (1993-08-01), Marui
Kikuchi Kazuo
Koyama Yoshihide
Shibasaki Mitsuharu
Yokotsuka Yoshitake
Clarion Co. Ltd.
Kuntz Curtis
Oh Minsun
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