[sdiy] harmonics & vibrato

[Peter Grenader]

They track the fundmental.

Tim Ressel wrote:

> 
> Yo,
> 
> Here is a ponderance: when a violin string is being
> played with vibrato, how are the harmonics being
> affected? do they change at the same frequency
> difference as the fundamental, or do they proportional
> to their ratio with the fundamental?
> 
> To put it another way: If the fundamental is changing
> 1%, does the 2nd harmonic vary 1% or 2%??
> 
> Thanks,
> 
> --tr
> 
> 
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