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452 PRINCIPLES OF CINEMATOGRAPHY
LOUDSPEAKERS An Improved Loudspeaker System for Theatres. J. B. Lancing and J. K. Hilli
ard. J.S.M.P.E. Vol. 45. Nov., 1945. p. 339. Frequency Modulation Distortion in Loudspeakers. G. L. Beers and H. Belar.
J.S.M.P.E. Vol. 40. Apr., 1943. p. 207. Piezo-electric Loudspeakers. A. L. Williams. J.S.M.P.E. Vol. 24. Feb. 1935.
p. 121. Recent Developments in Theatre Loudspeakers. H. F. Olson. J.S.M.P.E.
Vol. 18. May, 1932. p. 571.
MACHINERY Printing. See under Printing Machinery. MEASUREMENT OF COLOUR See Colour Measurement.
MECHANISMS
Intermittent. See under Intermittent Mechanisms. Projector. See under Projector Mechanisms.
MICROPHONES Characteristics of Modern Microphones for Sound Recording. F. L. Hopper.
J.S.M.P.E. Vol. 33. Sept., 1939. p. 278. Determination of Microphone Performance. F. L. Hopper and F. F. Roman
oro. J.S.M.P.E. Vol. 36. Apr., 1941. p. 341. Moving Coil Microphone of High Quality Reproduction. W. C. Jones and
L. W. Giles. J.S.M.P.E. Vol. 17. Dec. 1931. p. 977. Piezo-Electric Microphones. A. L. Williams. J.S.M.P.E. Vol. 23. Oct., 1934
p. 196. Ribbon Microphones. H. F. Olson. J.S.M.P.E. Vol. 16. June, 1931. p. 695.
MONITORING AND VOLUME INDICATORS
Dimmick, G. L. 'A New Dichroic Reflector and Its Applications to PhotoCeil Monitoring Systems.' J.S.M.P.E. Vol. 38. Jan., 1942. p. 36.
Read, S. Jr. 'RCA Victor High-Fidelity Film Recording Equipment/ J.S.M.P.E. Vol. 20. May, 1933. p. 396.
Read, S. Jr. 'A Neon Type Volume Indicator.' J.S.M.P.E. Vol. 28. June, 1937. p. 633.
Kreuzer. B. 'Recent Improvements in the VariableWidth Recording System. J.S.M.P.E. Vol. 27. Nov. 1936. p. 562.
MOTION PICTURE PROJECTION General. See under Text Books.
OSCILLOGRAPH
Hardy, A. C. "The Optical System of the Oscillograph and similar Recording Instruments.' J. Opt. Soc. Amer. and Rev. Scien. Instruments. Vol. 14. June,
1927. p. 505. Dimmick, G. L. 'Galvanometers for Variable-Area Recording.' J.S.M.P.E.
Vol. 15. Oct., 1930. p. 428.
PENUMBRA VARIABLE-INTENSITY SYSTEM Dimmick, G. L. 'Optical Control of Wave-Shape and Amplitude Characteristics in Variable-Density Recording.' J.S.M.P.E. Vol. 33. Dec., 1939. p. 650. Faulkner, C. W. and Batsel, C. N. 'Operation of the Variable-Intensity Recording System.' J.S.M.P.E. Vol. 36. Feb., 1941. p. 125.