We use Optical Character Recognition (OCR) during our scanning and processing workflow to make the content of each page searchable. You can view the automatically generated text below as well as copy and paste individual pieces of text to quote in your own work.
Text recognition is never 100% accurate. Many parts of the scanned page may not be reflected in the OCR text output, including: images, page layout, certain fonts or handwriting.
Projection
Engineering
Sound Pictures
Visual Projection
Sound Recording
Audio Amplifiers
Public-Address Systems
Photography
Facsimile Recording
Television
Photo-Voltaic Cells
Circuit Measurements
Automatic Music
Acoustic Engineering
Radiant Energy Devices
Electric Recording
Phototubes
Home Talkies
Theatre Engineering
Amplifier Tubes
Sound Reproducers
Screen Engineering
Electric Power for Projection
Recording Studio Engineering
Location Sound Equipment
Rectifier Tubes
Industrial Tube Applications
Donald McNicol Editor
Jas. R. Cameron Associate Editor
Ulmer G. Turner Western Editor
F. Walen Managing Editor
Vol. IV
APRIL 1932
Number 1
Contents
PAGE 4
Editorial
Screens for Sound Pictures By Gordon S. Mitchell 7
The Microphone in Public-Address Systems
By Charles Felstead 9
The Screen Problem . , By Sylvan Harris 1 3
A Re-Recording Machine for Sound Films By J. J. Kuhn 14
Sound Picture Lectures Expansion 17
Sound Transmission for the Hard of Hearing
By Henry L. Williams 1 8
Thermionic Switchboard Controls Theatre Light 20
Educational and Commercial Films with Sound-on-Disc
By Roger W. Fenimore 21
World's Largest Public-Address and Program Distributing System By J. J. Kuhn 22
Departments
New Developments of the Month and News of the Industry
24
Index of Advertisers 30
Bryan S. Davis President
James A. Walker Secretary
Published Monthly by
Bryan Davis Publishing Co., Inc.
19 East 42nd Street
New York City
E. M. Bacon Advertising Manager
J. E. Nielson
Circulation Manager
Chicago Office— 333 N. Michigan Ave.— Charles H. Farrell, Mgr.
St. Louis Office505 Star Bldg.— F. J. Wright.
Kansas City Office— 306 Coca Cola Bldg.— R. W. Mitchell
San Francisco Office— 155 Sansome St.— R. J. Birch. Los Angeles Office— 846 S. Broadway— R. J. Birch. New Zealand— Tearo Book Depot— Wellington. Australia— McGill's Agency— Melbourne.
Entered as second class matter August 15, 1931, at the post office at New York, N. Y„ under Act of March 3, 1879. Yearly subscription rate $2.00 in U. S. Yearly subscription rate $3.00 in Canada and foreign countries.