[music-dsp] tube saturation algorithm research

Vesa Norilo vesa.norilo at saunalahti.fi
Sun Jul 10 17:39:08 EDT 2005


>
>is there any white paper or online reading that states the distortion
>indexes of the harmonics that a tube creates?
>
>  
>

If you find one, let me know.

However, there's a nice way to measure them.

Record a sine sweep through the equipment you measure. Do 
autocorrelation. Observe distortion components in the result. You see, 
it thinks that the extraneous harmonics are 'echoes' of the primary sine 
sweep.

Vesa



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