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…As part of a Veenfabriekspecial in the Rotterdamse schouwburg featuring:

Alamo race track / Eckhard / Touki Delphine /siren-orchestra

check: www.rotterdamseschouwburg.nl

On sunday the 27th of april, the siren-orchestra has played her maiden, sold out performance, as part of the Symposium On Sound.

We have started studying the siren-instruments last week. All very curious what musical potential these intruments have to offer..

Below you get an impression of the “Intona Rumori”. Reconstructions of Luigi Russolo’s Intona Rumori.

These instruments are part of the siren orchestra and are built by Wessel Westerveld.

Assembly of the parts. Are my drawings correct? Should I have spent more time checking them?

So far everything takes time and precaution, but seems to fit. Thanks to extra steady hands.

No more doubts. This machine works!

After developing and experimenting with the Helmholtz-prototype, based on the Helmholtz double-siren, I concluded a lot of things. In a nutshell; precision is important. Important for musical variables, like pitch, timbre, volume, harmonics, interference and more. But precision is also important for the ability to reproduce the same sounds with the siren-instrument, over and over again; studying the instrument.

I redesigned parts, based on the prototype. For production I seeked collaboration with a CNC-machining company; Rijfers Metaalbewerking in Alphen a/d Rijn. Basically, my technical drawings are adapted and sent to numerical controlled machines, capable of producing the parts. With the capabilities of these milling- and lathing-machines in mind, you can produce smart parts, with great precision.. 

First testruns made with Loman-siren.

Its 12 tones are based on equal temperament.

It is played by a klavier, one octave wide.

The double siren, based on Helmholtz’ double-siren, wich he used for measurement purposes, has got various just intervals. The intervals that we will be able to use for the first compositions are gathered in a scheme:

The green column represents  series of holes resulting in tones of different pitch. These series of holes will be available for the first compositions. The names of familiar intervals are standing above the musical intervals. source: http://nl.wikipedia.org/wiki/Lijst_van_intervallen

The Siren-orchestra will be presented on the Symposium On Sound on the 27th of april.

for details, check www.veenfabriek.nl