SMPTE RP 90 – Specifications for Type U Audio Level and Multi-frequency Test Film for 16-mm Audio Reproducers, Magnetic Type
Specifications for Type U Audio Level and Multifrequency Test Film for 16-mm Audio Reproducers, Magnetic Type This practice specifies a type U audio frequency test film to be used for adjusting the mechanical and electrical parameters of 16-mm motion-picture magnetic audio reproducers operating at 24 frames per second.
