Re: gEDA-user: Speaker SPICE modeling with gschem and ng-spice/gnucap

[John Doty <jpd@xxxxxxxxx>]

On Sep 12, 2011, at 3:09 PM, Hannu Vuolasaho wrote:

> I have been playing with one guitar amplifier project for a while and so far the amplifier design has been more or less copy and paste and simulate and guess from graphs. However I bumped in net this blog post 
> 
> http://nordicnerd.blogspot.com/2011/08/active-speakers-spice-with-actual-audio.html
> 
> Is it possible to do same thing? Input wav to simulator and get speaker's output and hear it? I know it's not perfect but it could be very helpful. Has someone done this before and provide some hints, examples or links?

Shouldn't be too hard. ngspice seems to have no limit to the length of a PWL spec. Put the audio in some simple form (like raw binary samples), write a tiny program to convert to PWL. Generate output with .PRINT, write another tiny program to convert to binary samples.

John Doty              Noqsi Aerospace, Ltd.
http://www.noqsi.com/
jpd@xxxxxxxxx




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