The Actuators

Each string has, as a pythagorean system, physical points (the nodes) where the harmonics or partials can be found. In this way, the central point of a string (1:2) is the first harmonic; the division of a string in 3 parts (1:3) is the second harmonic; the 1:4 the third harmonic and so on...

Each of this points is a physical node, if we put an actuator over this point the string will sound the harmonic that corresponding to the node in the tunning of the string for example, if the fundamental tone is E and the node that we choose is the 3th. harmonic (one octave and a fifth high) then the note is B.

In this musical conception, we choose the harmonics called "non ocidental" as the points where install the actuators : the 7th, the 9th and the 11th harmonics of the natural scale. Then the actuators will be installed in the : 7th harmonic - creating the major 7th interval (E - D) or 15:8 of the length of the string; the 9th harmonic - or interval of a 2a. major (E - F#) 16:15 of the length of the string; and finally the 11th harmonic - the trytone (E - Bb) or 45:32 of the length of the string.

Making off photos

complex system of assemblage of the strings in the Sabina Museum.


the wall has 30 meters long and 2,50 meters high.