For the achievement of the resonance box, the models painted by Georges de la Tour were my first inspiration, but also was the Jean-Luc Bleton's approach presented by (in “vielle Ó roue - territoires illimitÚs” edition FAMDT): "Thus, I chose to carry out a bent back (it fits in cylinder) with a symmetrical convex table, the whole made out of maple. This system of double bent sides allows a better rigidity of the ensemble, therefore it limits the inner reinforcement, and thus it release and amplify vibrations of the back". What produces a better sound quality.
For Esquisse, I developped a spruce bent table with specific braces. It gave more volume and larger sound spectrum.
Electroacoustic or electric vielles
We propose 2 category of sensors:
-piezo sensors: they economic, easy to use, and give good sound when they are well amplified. These sensors transmit wood vibration so its impossible to diferentiate sounds sources (trumpet/ melody/drone).
-magnetic sensors: they are usable on steel strings and on trumpets with a special assembly. So it is possible to put a sensor by string, and to have the sound of a single string on an input.
3 sound system levels
Very simple without preamp:
piezo sensors withe cable outputs.
With 4 input preamp:
The preamp is for de 4 piezo or magnetic inputs, with 1 mixed output, and 4 output on special cable.
With 8 input preamp:
The preamp is for 8 piezo or magnetic imputs, with 1 mixed output, and 8 or 6 output with special cable.
These preamp are designed and manufactured by Dominique Raymond, hifi electronic engineer.
Sound quality with these sensor and preamp is unparalleled.
All instruments with 4 drones are equipped with magnetic sliding capos. The system is simple: the string is passing thru a magnetic button with can slide on steel bar.
Wheel height setting:
This setting allow a quick correction of string/wheel pressure.
Hermeline: see magnetic sensors below melodic strings
Preamp with 8 input & 6 output + 1 mixered output
Ovo´de: see sliding capos on steel boards
creativity of the medieval luthiers is very amazing, and
whose inner workings are still very mysterious. Already done, the
reconstruction of the vielle painted by Georges de la Tour is my first
work in this direction. The biggest challenge was to imagine parts of
the instrument not represented by the iconography.
vielleur au chien
vielleur au chapeau
Other project: a symphony reconstructed according several sources (for example MS Psalterio Luttrel 1325 below). I tried to design the keyboard as it was during the middle age and not to insert a keyboard as it was invented during 18th century.
CAD view of symphony reconstruction