DESCRIPTION:
A demonstration of the mixtur-trautonium's formant filters. The filter was originally designed by Freidrich Trautwein as vacuum tube (or rohrentechnik) technology in 1930, at the very beginnings of subtractive synthesis.( I mistakenly referred to subharmonic synthesis in my closing remarks) The filters here are version of the design from the halbeiter, or semiconductor mixtur trautonium dating from around 1989 and were made by Trautoniks. For further information, interviews with Oskar Sala, explanations of the instrument and musical examples visit Trautonist at:

https://www.youtube.com/user/Trautonist

Also:

http://www.trautoniks.de/

http://trautonium.de/

© James Worthington 3 Nov 2015