Editing Trautonium (section)

== Description ==
Instead of a [[Musical keyboard|keyboard]], its [[manual (music)|manual]] is made of a [[resistor]] wire over a metal plate, which is pressed to create a sound. Expressive playing was possible with this wire by gliding on it, creating [[vibrato]] with small movements. Volume was controlled by the pressure of the finger on the wire and board. The first Trautoniums were marketed by [[Telefunken]] from 1933 until 1935 (200 were made).

The sounds were at first produced by neon-tube [[relaxation oscillator]]s
<ref name=Braun1982>{{cite conference |author=Hans-Joachim Braun |year=1982 |title=Music Engineers. The Remarkable Career of Winston E.Kock, Electronic Organ Designer and NASA Chief of Electronics. |publisher=IEEE |conference=2004 IEEE Conference on the History of Electronics |url=https://ethw.org/w/images/8/8e/Braun.pdf|archive-url=https://web.archive.org/web/20120309223721/http://www.ieee.org/portal/cms_docs_iportals/iportals/aboutus/history_center/conferences/che2004/Braun.pdf |archive-date=2012-03-09 }} Example of a  similar early neon keyboard invention  by [[Winston E. Kock]]</ref> (later, [[thyratron]]s, then transistors), which produced [[sawtooth wave|sawtooth-like waveforms]].<ref>Thom Holmes, ''Electronic and experimental music: technology, music, and culture''. Routledge, 2008, p.31-2.</ref> The pitch was determined by the position at which the performer pressed the resistive wire into contact with the plate beneath it which effectively changed its length, with suitable technique allowing vibrato, [[quarter tone]]s, and [[portamento]]. The oscillator output was fed into two parallel resonant filter circuits. A foot pedal controlled the volume ratio of the output of the two filters, which was sent to an amplifier.<ref>[http://www.informatik.uni-oldenburg.de/~jgspix/TRpaperEngl/TRpaperEngl.html Jörg Spix, ''The digital Trautonium''.]</ref>

On 20 June 1930 [[Oskar Sala]] and [[Paul Hindemith]] gave a public performance at the Berliner Musikhochschule Hall called "Neue Musik Berlin 1930" to introduce the Trautonium. Later, Oskar Sala toured Germany with the Trautonium; in 1931 he was the soloist in a performance of Hindemith's Concerto for Trautonium with String Quartet. He also soloed in the debut of Hindemith's student [[Harald Genzmer]]'s Concerto for Trautonium and Orchestra.

[[Image:Mixtur Trautonium.jpg|thumb|Mixtur-Trautonium, 1952]]

Paul Hindemith wrote several short trios for three Trautoniums with three different tunings: bass, middle, and high voice. His student Harald Genzmer wrote two [[concertos]] with orchestra, one for the monophonic Trautonium and, later, one for Oskar Sala's '''Mixtur-Trautonium'''. One of the first additions of Sala was to add a switch for changing the static tuning. Later he added a [[noise generator]] and an [[ADSR envelope|envelope]] generator (so called 'Schlagwerk'), [[formant]] filter (several [[bandpass filter]]s) and the [[subharmonic]] [[electronic oscillator|oscillators]]. These oscillators generate a main pitch and several subharmonics, which are not multiples of the fundamental tone, but fractions of it.  For either of the (now two) manuals, four of these waves can be mixed and the player can switch through these predefined settings.  Thus, it was called the Mixtur-Trautonium. Oskar Sala composed music for [[industrial films]], but the most famous was the bird noises for [[Alfred Hitchcock]]'s ''[[The Birds (film)|The Birds]]''. The Trautonium was also used in the Dresden première of [[Richard Strauss]]'s [[Japanese Festival Music]] in 1942 for emulating the gongs- and bells-parts and in the 1950s in [[Bayreuth Festspielhaus|Bayreuth]] for the Monsalvat bells in Wagner's [[Parsifal]].