Mr Bush Extension work (sound)

Development of Sound Technology in Hollywood during 1920’s

In the 1920s, the introduction of sound recording was a massive event in the development of sound recording.  Many other new items and procedures were later introduced. For example, different transducers such as microphones and loudspeakers were introduced, along with devices such as the mixing desk.  Greater sound fidelity was also found during 1920, by using the electrical system, with one of the earliest recordings made being the dedication to the Tomb of the Unknown Soldier at Arlington Cemetery.

In the 1920s, the media industry also introduced the usage of photoelectric cells to record and reproduce sound signals that were optically recorded directly onto the movie film. Shortly thereafter, there was also the use of the first practical magnetic sound recording system, otherwise known as the Magnetic Sound Wire, which was solely based on the work of Danish inventor Valdemar Poulsen.