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Hi all, I've been modeling a lot of guitar effects lately (please check my public circuits list) and tend to just run a time-domain with a 1Hz sine 100mV input to simulate the guitar. For boost circuits this seems logical as I can evaluate the output signal strength, and for clipping I can see the distorted waveform...

But I was wondering what others are doing?

Hey geedeebee, cool stuff. I looked at some of your circuits and it seems that you are using a 1kHz sine in general. That seems reasonable, however you may want to consider using the frequency domain analysis tools (if you haven't already).

@geedeebee,

You might also like to consider using a square wave input signal in addition to sinewave testing.

Using a square wave can, in a single time domain simulation run, tell you a lot about the transient and - if you understand how to interpret the waveforms - the frequency response of a circuit.

This site gives a bit of insight into the sort of information you can get from this type of testing:

http://users.tpg.com.au/users/ldbutler/Waveforms.htm

I'm sure Google can find you more.

:)

More of same:

http://www.rfcafe.com/references/radio-news/practical-techniques-square-wave-testing-july-1957-radio-tv-news.htm