dac en


Posted on Feb 6, 2014

The Digital-Analog-Converter fetches one of 15 parallelly pressed keyboard keys from the digital bus of the synthesizer and converts it into a control voltage (1V/Octave) and a GATE signal. The TUNE-COARSE and TUNE-FINE pots allow pitch adjustment of the voice the DAC is responsible for in polyphonic environment. The portamento pot creates a pitch


dac en
Click here to download the full size of the above Circuit.

slide from one key touch to the next. The analog part of the circuit comes from the book "Formant Pro MSS 2000" by H. J. Helmstedt, but I built only a part from it, as I don`t use wheels or key velocity. I developed the digital part of the circuit which reads the digital bus and makes the voice selection. Schematic:




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