16-mm sound motion pictures : a manual for the professional and the amateur (1953)

Record Details:

Title:
16-mm sound motion pictures : a manual for the professional and the amateur
Date:
1953
Publisher:
New York : Interscience Publishers
Volume:
16-mm sound motion pictures : a manual for the professional and the amateur
Leaf #:
000245
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Niles Essanay Silent Film Museum
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Description:
Date Added:
April 11, 2024
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CAEDIOID MICEOPHONES 229 ,vj\o£ pick-up ^0/V£ 0° ANNOUNCER'S ZONE (Directivity Index) ANNOUNCER'S ZONE efficiency for sound of normal incidence Fig. 47 A. Directional response cardioid microphone. PRESSURE ELEMENT BECAUSE SOUND FLOWS AROUND CORNERS THE DIAPHRAGM ALWAYS MOVES IN SAME DIRECTION REGARDLESS OF DIRECTION OF SOUND RIBBON TYPE PRESSURE GRADIENT ELEMENT THE RIBBON REVERSES ITS DIRECTION OF MOTION WITH REVERSAL OF SOUND DIRECTION FOR SOUND APPROACHING FROM THE FRONT THE DIAPHRAGM AND RIBBON ARE DEFLECTED IN SAME DIRECTION for sound approaching from the back the diaphragm and ribbon are deflected in opposite directions Fig. 47B. Schematic illustration of cardioid directional microphone.