Nice demos!


we point to a multi-modal string quartet multi-modal (audio, contact mics, mocap, video, etc) dataset we recorded some time ago. I believe it's also listed in the MTG-UPF website.

As for your excitation signal, perhaps some temporary "chaos" in your
oscillator synchronization method might help with the attacks.



On 3/14/2018 1:45 PM, gm wrote:
I made a little demo for parametric string synthesis I am working on:

It's a morphing oscillator made from basic "virtual analog" oscillator components (with oscillator synch) to mimic the bow & string "Helmholtz" waveform, fed into a simplified body filter.

The body is from a cello and morphed in size for viola, cello and bass timbres
(I know that's not accurate).
It's made from a very sparse stereo FIR filter (32 taps).
It doesn't sound like the real instrument body response, but the effect still sounds somewhat physcial to me.

The idea is to replace the VA "Helmholtz" oscillator with a wavetable oscillator (with synch?) which is controlled by paramterized playing styles, to be more flexible and more natural behaving
than sample libraries.
And a better body filter.

The advantage over waveguide modeling with a bow model would be that you don't have to play the bow with accurate pressure and velocity, and that it is more cpu friendly and more flexible in regards to more artificial timbres and timbre morphing.

So far it's a private hobby project in Reaktor 5, but it maybe has some potential I believe. Doesn't sound like samples yet but maybe it will when the model is improved...

At least it can provide an instrument with a hybrid sound between virtual analog and physical which is something I love to use in my music. I used the body filter with synths quite often.

So far the "Helmholtz" waveform is made from assumptions like that that it behaves like a synched oscillator depending on the ratio between the two sides of the string,
which might not be true.

Why I am posting this:
Maybe someone here plays an electric solid body violin or something similar and can provide samples of bow & string waveforms with different playing styles and notes for analysis?
And has an interest to join efforts to create this instrument?
Or maybe someone even knows of a source for such waveforms?

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Esteban Maestre
Computational Acoustic Modeling Lab
Department of Music Research, McGill University

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