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Almost as classic as stradivarius or stratocaster...The savart Violin is exposed in Brussel's musical instrument museum (highly recommended). This is one of the earliest attempt to understand the mechanics of violin and "re-engineer" the instrument with outstanding results at the time. If you have 28 minutes to spare, check out the documentary about Dr Claudia … Lire la suite de Savart violin

I was really fortunate this november to wander through Brussels and attend the very first concert of Stéphane Galland's  "Mystery of Kem" on the release night of the album in Flagey. What a night ! all my family was attending and even the youngest got mesmerised by Stephane Galland mastery on drums, rising on his … Lire la suite de Encountering the Master

All the best to all musicians around, may 2019 be a year of peace and emotion.

I had the chance to attend a presentation by Cyril Touzé from ENSTA ParisTech, about non linear vibration of thin plates. Usually the term "Non linear" is a show stopper for most engineers, It just means that the mathematical description of a system can not or no longer be simplified using linear relations (things like … Lire la suite de Gongs &Cymbals

Repercussion wishes a very merry christmas to all drummers and percussionist around, may this christmas bring joy and happiness to you. We will keep dreaming and pushing the status quo of musical instrument building through innovation and understanding of the physics.   Thomas.

Great day for REPERCUSSION, the patent filed some month ago came back with a green light from the patent office: it's new, it's innovative and it's applicable to manufacturable products !  

Build your own sound with Repercussion patented Bessel vented snare. Choose vent characteristics : we will print out spacers fitting exactly your needs to parameter the ported vent. Choose top and bottom shell independently (Height, thickness, material) Change the shell as easily as changing a head All mechanical elements on the chassis (snare strainer and … Lire la suite de « …And you can have it in any colour you want as long as it’s your sound… »

Further considerations on the simulation results lead to think that - as always in simulation - the results are limited to the modelled physics. We still don't understand the presence of a low frequency component (100 Hz) only found in Repercussion Bessel vented snares testing , where model shows a "Helmhotz resonator" behaviour for standard … Lire la suite de Air and shell waves speed race

First results of numerical simulation indicates that on a dual membrane drum, the first mode of the membrane is actually more influenced by the shell depth than the tension itself. This is a direct consequence of the heavy coupling occurring in drums : the first membrane mode ((1,0) with one nodal circle being the edge … Lire la suite de Shell depth , Venting & admittance

A major step has been made in the understanding of drums acoustics thanks to the Laboratoire de Vibration et D' Acoustique (Vibration & acoustics lab) of the National Applied Science (INSA) engineering school in Lyon. Two students have been modelling a snare drum with the intent of : Understanding how the air loading (coupling) was … Lire la suite de Numerical Simulation