Re: [Rakarrack-users] [feature request] E-Violin support

[Ryan B. <ry...@gm...>]

One user asked about using the convolution module for simulating 
different guitars.  One could use it to make an electric guitar sound 
like wood (acoustic).

I would think the same can be done with violins.

The only thing you need in order to do what you want is to make an 
impulse response...probably something like GNU Octave could help to 
create such an impulse response and here is how:
1) impulse response of electric violin body.
2) impulse response of normal (acoustic) violin body.
3) de-convolve electric violin response (for example, reverse e-violin 
response).
4) The final impulse response will be anti-electric violin convolved 
with acoustic violin response.
5) Load this IR into Rakarrack and see what happens. 

To make impulse response measurements you probably have to make a 
recording (in a silent, dead room) of whacking the body of your violins 
(electric and acoustic) with a wood block or rubber coated spoon.  It 
will be hard to get a true IR, but I think the deconvolution will remove 
the common frequency responses (whack on the wood, and anything common 
between the two).

When you have two .wav files, cut them to the same length then use 
software tool of your choice to deconvolve the electric from the acoustic.

Even if you can make good strong wav file recordings and send to me, 
then I can do the processing.  I don't own a violin so I can't make IR's.

About resonant filters:
Look into Echotron.  You can assign up to 32 filter bands in the text 
file.  You can't tweak in real time, but if you know what resonances you 
want, then you can set all the delays to zero, and assign frequencies & 
resonance.  Set HP and LP columns to zero.  That will more or less be a 
32-band parametric EQ.

Take care,
Ryan

Hanno Behrens wrote:
> Hi Folks,
>
> good job by the way.
>
> I'm playing around with Rakarrack since a while, not so much focused on use 
> with E-Guitars but synthesizers and recently with E-Violin. Marvelous tool. 
>
> I'd like to request a feature like in Coil Crafter or a convolution to switch 
> the "voice" of my electric violin and to exchange it with the sound of my real 
> violin. This should be possible in a way. 
>
> The sound of the e-violin is different from a real one but still near enough to 
> change the timbre. 
>
> And while I'm on that how about an resonance filter unit? The resonance filter 
> that you can find in ZynAddSubFX is giving each instrument an unique timbre, 
> something that I find highly useful when I'm playing with synth. But exactly 
> this unique timbre is missing when I try to fiddle on my e-violin. 
>
> Usually there is no violin that sounds like the other. And the reason for this 
> is the very complex resonance curves of their corpus, strings and bowing 
> technic. 
>
> With the convolution addon, I think of something easy to use like in Coil 
> Crafter the sound of the e-violin would be enriched by length. As this would 
> happen with something like a resonance filter.
>
> Most violinists don't use e-violins because of their flat timbre. Which is 
> their main disadvantage and even the effects can't do much about that - missing 
> resonance. At the moment I try to help me out with equalizers and reverb 
> effects but this is not the same. This would change by this. I see forward to 
> this if you happen to implement it very much.
>
> An e-violin with the full rich sound of a real one. That's something no rack 
> in the world can do.
>
> With best regards
>