Sound Control and Isolation in the Design of Broadcast Studios

The paper contains a discussion of the necessity for making relatively elaborate provisions for sound control and isolation of broadcast studios, particularly studio groups as large and complex as the NBC studios at Radio City. A description is given of the methods of isolating a studio from those adjacent and also from surrounding spaces; of sound control and isolation details of windows, doorways, vestibules, foyers, corridors, electric light and power wiring, and the installation of isolating partitions. The paper also contains a discussion of the control of noise in an air conditioning system; layout and isolation of duct work; choice of sound absorbing material and manner of installation in duct work; design and choice of air velocities in supply and return outlets; and isolation of rotating machinery. A discussion is also given of anticipated noise levels and those obtaining after the completion of the installation.