9 AUDIO SIGNAL PROCESSING APPARATUS-NAMELY, ELECTRONIC PHASING SIMULATORS, TONE SYNTHESIZERS, FUZZ TONE OR SIGNAL DISTORTION APPARATUS, OCTAVE DIVIDERS, SOUND COMPRESSORS, SWITCHING UNIT FOR REMOVING LOW AMPLITUDE SIGNALS, AND NOISE, FILTERS, TONE CONTROLLERS, DIGITAL AND ANALOG DELAY UNITS AND POWER SUPPLIES THEREFOR