Electrical audio signal processing systems and devices – Sound effects
Patent
1995-02-24
1998-03-31
Isen, Forester W.
Electrical audio signal processing systems and devices
Sound effects
381123, H03G 300
Patent
active
057347255
ABSTRACT:
This invention is an emulation of vacuum tube guitar amplifier with devices that emulate vacuum tube plate voltage and current characteristics. This amplifier system has a switching system for selecting preamplifiers and which alters the behavior of the output stage by changing features such as feedback and compression character. The preamplifier and output stages use non-linear means for the emulation of triode amplifiers, cathode followers, phase splitters, and pentode amplifiers. The features emulated are the grid conduction with scaling and offsetting, current gain, plate voltage and current characteristics, and compression.
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