Equalization preamplifier with high frequency gain peaking
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United States of America Patent
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-
Feb 21, 1984
Grant Date -
N/A
app pub date -
May 11, 1981
filing date -
May 11, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Gain peaking and attenuation of audio signals above the peak gain frequency are provided in an audio frequency equalization preamplifier that includes an operational amplifier having a feedback network including first and second resistors and a feedback capacitor connected between the output and the second feedback resistor. Two or three low pass RC filter sections are connected between the audio signal source and the noninverting input of the operational amplifier with a circuit connecting a capacitor of the second RC section from the noninverting input to a node between the second feedback resistor and the feedback capacitor.
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