[sdiy] LTSpice for large circuits?

[Neil Johnson]

Hi,

Jay Schwichtenberg <jays at aracnet.com> wrote: 
> I don't think doing a vocoder in full would be practical (don't know about
> the component limits). Might be pretty fast when we get 8 core, quad
> processor systems if the SW is written for threading.

For a quick test I strung 128 LT1022 op-amps in a long chain.  It simulates, but rather slow (about 1us/s).  And this on a quad-core 2.67GHz machine with 3GB RAM, and all four cores close to 100%.

So, no I don't think there's any limitation as such.  This is for LTSpice-IV.

One feature I *do* like about LTSpice is the ability to read and write WAV files - I used this feature when designing my all-pass filter to get a feel for how it might treat real audio rather than generated waves.

Neil
--
http://www.njohnson.co.uk