The Sentient Machine is an LFO modulated resonant lowpass filter with two different voices: A standard wah sound and a special vowel type sound. At slow speeds it produces a spacey sweeping sound reminiscent of a phaser. The vowel voice mode is achieved by modulating an additional filter that is tuned higher and sweeps in the opposite direction. It's a combination of filters sometimes referred to as a formant filter. This circuit uses PWM and CMOS switches as variable resistors insted of vactrols or jfet's, which gives a perfectly matched set of variable resistors and more accurate modulation at low resistances. Happy building and playing!
Partial kits include the PCB and everything you need to build the circuit; enclosure and knobs not included.
Battery not supplied, 300ma 9v WW available a related product below
Our enclosures are drilled to order, by hand; they may include evidence of human manufacturing, such as slightly enlarged holes to allow matched placement of pots and jacks.
