R. Biddulph

A Light-Valve for the Stereophonic Sound-Film System

E. C. Wente, R. Biddulph, 1941 .

Mechanical and Optical Equipment for the Stereophonic Sound-Film System

L. A. Elmer, E. C. Wente, R. Biddulph, 1941 .

Short‐Term Autocorrelation Analysis and Correlatograms of Spoken Digits

R. Biddulph, R. Biddulph, 1954 .

Differential Pitch Sensitivity of the Ear

R. Biddulph, R. Biddulph, E. G. Shower, 1931 .

Mechanical and Optical Equipment

L. A. Elmer, E. C. Wente, R. Biddulph, 1941 .