Amplifiers – Signal feedback – Nonlinear impedance element in loop path
Patent
1989-12-19
1991-07-16
Mullins, James B.
Amplifiers
Signal feedback
Nonlinear impedance element in loop path
381 61, 381118, 381121, H03F 134, H03G 300
Patent
active
050327968
ABSTRACT:
A preamplifier for audio frequecy electrical signals generated by a musical instrument such a guitar having distortion characteristics simulating those of a vacuum tube amplifier. A solid state amplifier has an input for receiving electrical signals generated by the musical instrument and has an output for providing an output signal. Circuitry asymmetrically clips the output signal to provide as the output signal a nonlinear asymmetrically clipped signal having harmonic content which varies as a function of the amplitude and duration of the received electrical signals. The clipped signal has musically desirable harmonic overtones and produces different tonal responses simulating the characteristics of an overdriven vacuum tube amplifier.
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Kieffer Thomas E.
Tiers Jerrold S.
Mullins James B.
St. Louis Music, Inc.
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