Nice demos!
In
http://ieeexplore.ieee.org/document/7849104/
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.
Cheers,
Esteban
On 3/14/2018 1:45 PM, gm wrote:
I made a little demo for parametric string synthesis I am working on:
https://soundcloud.com/traumlos_kalt/parametric-strings-test/s-VeiPk
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
http://ccrma.stanford.edu/~esteban
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