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AVR Synther ADSR Plan B: Success.
Flowcharts are neat. ADSR now works. Gain is exponential on all slopes. Planned adjustments include gain table increase from 256×16 to 1024×16, with a linear ramp mode for the attack mode. 8bit and 16bit output varients planned. Scope image is from a Tektronx 2230 in DSO mode using the Roll mode (as opposed to Scan) for capture of very long waveforms (greater than 3 seconds).
Posted by rmrubin 
December 2007