I mean the VCF input differential pair, which imho makes the<br> rest of the ladder a slave to it (current flow in the series circuit).<br> <br> Its almost impossible to really 'clip' the Moog ladder... it really does<br> more of a compression than a true clipping. <br> <br> I'm talking about the VCF alone, with no VCA involved.<br> <br> Contrast what your average SVF or Sallen-Key archetecture will<br> do... the Moog is very 'tame'. Your average guitarist (raises hand :^)<br> would describe the action more as a limiter than a distortion.<br> <br> I don't think there is 'inherent feedback' in the Moog Ladder unless<br> the resonance circuit is engaged. The distortion is still there, albeit<br> it is also 'filtered' like you describe. (I'm talking global feedback)<br> <br> H^) harry<br><br><b><i>Antti Huovilainen <ajhuovil@cc.hut.fi></i></b> wrote:<blockquote class="replbq" style="border-left: 2px solid rgb(16, 16, 255); margin-le!
ft: 5px;
padding-left: 5px;"> On Mon, 20 Feb 2006, Harry Bissell Jr wrote:<br><br>> IMHO the Moog distortion is more a product of the differential<br>> pair diatortion, and has very little to do with 'filter'<br><br>Do you mean the VCA differential pair(s)?<br><br>A typical Moog synth has two sources of distortion: Filter and VCA.<br><br>The filter distortion depends on the cutoff. Much below cutoff the <br>inherent feedback reduces distortion, and much above cutoff the filtering <br>action is so heavy as to make the harmonics inaudible. Most of the <br>distortion happens near cutoff therefore.<br><br>The VCA distortion is one or more tanh in series (one for Prodigy / <br>Taurus, three for Minimoog).<br><br>Antti<br><br>"No boom today. Boom tomorrow. There's always a boom tomorrow"<br> -- Lt. Cmdr. Ivanova<br></blockquote><br>