Journal of the Society of Motion Picture Engineers, Volumes 36-37

acoustic amplifier amplitude angle applied approximately arc lamps armature audio auditorium Bell Telephone Laboratories Calif camera carbon cent Chairman characteristic circuit Committee Convention curve cutter cycles damping developed distortion effect electrical emulsion equipment exposure Fantasound field film filter frequency ground-noise reduction Hollywood Hotel Pennsylvania Hotel Roof inch increase Laboratories lamp latent image lens light loud speaker machine magnetic material measurements method microphone modulation Motion Picture Engineers motor negative noise obtained OFFENHAUSER operation optimum output performance Phonofilm photographic pick-up Pict playback position produce projection projector Recommended Practice recording reduced reproducing response result reverberation review rooms scanning screen Section selsyn shown in Fig shutter Silent Film silver bromide SMPE Society of Motion sound Sound Reproduction Sound-Film sound-track speed sprocket sprocket-hole stage Stereophonic Stereophonic sound studio surface synchronous television temperature tests theater tion tooth track tube variable-gain amplifier Vice-President voltage York