Audio-visual System Research Articles

The Electronic Video Recording System

It has already been announced that Imperial Chemical Industries Ltd. has joined with the Columbia Broadcasting System Inc. of America and C.I.B.A. Ltd., of Switzerland, to form a partnership in the United Kingdom to manufacture and market a new audio-visual system called E.V.R.—Electronic Video Recording and Reproduction.

Lecture Hall and Learning Space Design

The variables and parameters affecting architectural planning and the selection of audio-visual systems for lecture halls and other learning spaces are surveyed. Interrelationships of factors are discussed, including design requirements for modern educational techniques as differentiated from cinema-theater-auditorium design; general hall geometry and seating plan as determined by the character of events, limitations of audience, required sight lines and projection angles; illumination of hall, special events and screens and the effect of hall light on screen; general acoustics; the need for integrating architectural design with selection of projection equipment and screens; the effect of front and rear projection; and lighting, audio and projection control. Bases for examination of economic optimums are given and guide lines for future research are suggested.