Perspecta

thumb|Perspecta sound channel layout (Left, Center, Right) Perspecta was a directional motion picture sound system invented by the laboratories at Fine Sound Inc. in 1954. The company was founded by Mercury Records engineer C. Robert (Bob) Fine, husband of producer Wilma Cozart Fine. As opposed to magnetic stereophonic soundtracks available at the time, Perspecta's benefits were that it did not require a new sound head for the projector and thus was a cheaper alternative. thumb|Perspecta sound signal, showing amplitude (top) and spectrogram of the control signals (bottom). In this example, con