Electronic audio signal processor

Details Electronic audio signal processor Electronic audio signal processor

H - Electricity

04

R

179/2

H04R 3/00 (2006.01) G10H 3/00 (2006.01) G10K 15/12 (2006.01)

Patent

CA 1214111

ABSTRACT OF THE DISCLOSURE An electronic audio signal processor especially suitable for electrical instruments such as electric guitars is provided including a controlled distortion and tone altera- tion portion and a reverb portion. The controlled distortion and tone alteration portion in one form comprises in cascade a compression stage which compresses the amplitude level of an inputted audio signal, a mid band pass filter, a distortion amplifier for adding controlled distortion to said signal and a complex filter having a roll-off of increased attenuation with increased frequency range in the lower and upper audio frequency ranges, and a generally flat response in the middle audio frequency range except with a dip followed by a peak in the upper portion of the mid audio frequency range. The reverb circuit includes a synthetic doubler which provides an output cyclicly varying in pitch from its input and a stereo analog shift register reverb device having two summers which combine staggered adjacent output lines from an analog shift register in different combinations. Two output mixers in conjunction with a switch provide reverb alone, doubling alone or reverb with doubling. -42-

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