This version adds some portamento, mod wheel vibrato (LFO + VCA), an additional ADSR/VCA for the VCF feedback path (this time take from the 48db LP output), and separate ADSRs for the VCF frequency and for the VCA. The VCF output is from the 12dB LP for added emphasis level if required.

As before achieving a sound is a balance between the VCF audio level (the higher it is the more it supresses the feedback/emphasis) and the emphasis level.

Note that the higher frequencies can get quite dirty with this patch.