Amplifiers – With semiconductor amplifying device – Including frequency-responsive means in the signal...
Patent
1991-08-20
1993-01-19
Mullins, James B.
Amplifiers
With semiconductor amplifying device
Including frequency-responsive means in the signal...
333 28R, 381 97, 381 98, H03F 3181
Patent
active
051809907
ABSTRACT:
An equalizer circuit having a medium and high frequency correction circuits having a characteristics that a phase of an input aural signal advances as a frequency of the aural signal is increased in a higher frequency range than the 1 KHz and a circuit constant which advances a phase of the frequency from about 1 KHz to 5 KHz relatively and a low frequency correction circuit having a characteristic that a phase of the input aural signal is delayed as the frequency of the aural signal is lowered in a lower frequency range than about 1 KHz and a circuit constant having a reverse characteristic to a peak of a resonance frequency of the sound field to be regenerated.
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