Recent Advances in Wax Recording
Halsey A. Frederick · Transactions of the Society of Motion Picture Engineers · 1928
IN THE recording and reproducing of sound by the so-called “electric” method with the “wax” disc, the process may be considered as consisting of eleven steps. In order, these are: studio, with its acoustic conditions; microphone; amplifier; electromechanical recorder; “wax” record; copying or reproducing apparatus; hard record or “pressing”; electric pickup; amplifier: loud speaker; auditoriuin.