Oops, I replied to this in almost exactly the same way. Except that Larry says it better... --- In motm@yahoogroups.com, Larry David <ldavid777@s...> wrote: > > On Aug 18, 2005, at 11:52 AM, paulhaneberg wrote: > > > I have to admit I'm somewhat bewildered by this discussion. > > Most resistors in MOTM modules have a tolerance of 5%. For > > capacitors, the tolerance is 10% or higher. The effect of > > inductance and capacitance generated by the lead wires inside IC > > chips is infinitesimal in comparison to the variations due to > > tolerance. > > I was asking more about the physics of the silicon junctions - pn and > np and all that - if they are physically smaller on SMT chips than on > older through-hole ICs or DIPs or whatever they are called. And if > they are smaller - or different in some other way - whether that would > affect how they sound in EM ckts. Whether this would cause better > tolerances and thus less variation, for example. As I think I said in > another post, these effects, if they exist at all, would probably be > more noticeable in custom synth-on-a-chip ICs like on the Andromeda - > and not in an MOTM module that has some SMT ICs on a board full of > discrete Rs and Cs. > > > If you make a sound with two VCOs they will both have slightly > > different characteristics. This is part of what makes them sound > > analog. If they sounded the same you would say it sounded Digital. > > Exactly. My question was about whether SMT IC components would sound > more "digital" in this sense than discrete components. Intuitively it > seems so, but I was asking the real engineers for the lowdown. > > > > > My 2 cents. > > > > Paul Haneberg > > > > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > >
Message
Re: Possible strange question about SMT
2005-08-18 by Mike Marsh
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