Electrical audio signal processing systems and devices – Including frequency control – Having automatic equalizer circuit
Patent
1986-12-22
1988-04-19
Isen, Forester W.
Electrical audio signal processing systems and devices
Including frequency control
Having automatic equalizer circuit
381 98, 381109, 381106, 333 14, 333 28T, H03G 500
Patent
active
047395141
ABSTRACT:
An automatic dynamic equalizer includes left and right input terminals, an input adder and left and right output adders. The left and right input terminals are connected to inputs of the input adder and inputs of the left and right output adder, respectively. The output of the input adder is connected to the input of a 2:1 compressor. The output of the 2:1 compressor is connected to the input of a bandpass filter having a transmission in the low bass frequency region centered at a frequency of about 60 Hz. The output of the bandpass filter is coupled to inputs of the left and right output adders.
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Chellquist Malcolm
Short William R.
Bose Corporation
Hieken Charles
Isen Forester W.
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