Some articles on phonog:

Musique Concrète - Technology - Development of Novel Devices - The Phonogène
... The phonogène was a machine capable of modifying sound structure significantly and it provided composers with a means to adapt sound to meet specific compositional contexts ... The initial phonogènes were manufactured in 1953 by two subcontractors the chromatic phonogène by a company called Tolana, and the sliding version by the SAREG Company ... the unique capabilities of the various phonogènes can be seen here Chromatic The chromatic phonogène was controlled through a one-octave keyboard ...