Chapter I: Front Matter

Transcriber’s Note: Italic text is enclosed in _underscores_; boldface text on the last page of the book is enclosed in =equals signs.= Other notes will be found after the footnotes.

UNIVERSITY OF ILLINOIS BULLETIN

ISSUED WEEKLY

Vol. XI MARCH 16, 1914 No. 29

Entered as second-class matter Dec. 11, 1912, at the Post Office at
Urbana, Ill., under the Act of Aug. 24, 1912.

ACOUSTICS OF AUDITORIUMS

BY
F. R. WATSON

BULLETIN No. 73
ENGINEERING EXPERIMENT STATION

PUBLISHED BY THE UNIVERSITY OF ILLINOIS, URBANA

PRICE: TWENTY CENTS

EUROPEAN AGENT
CHAPMAN AND HALL, LTD., LONDON

The Engineering Experiment Station was established by act of the Board of Trustees, December 8, 1903. It is the purpose of the Station to carry on investigations along various lines of engineering and to study problems of importance to professional engineers and to the manufacturing, railway, mining, constructional, and industrial interests of the State.

The control of the Engineering Experiment Station is vested in the heads of the several departments of the College of Engineering. These constitute the Station Staff and, with the Director, determine the character of the investigations to be undertaken. The work is carried on under the supervision of the Staff, sometimes by research fellows as graduate work, sometimes by members of the instructional staff of the College of Engineering, but more frequently by investigators belonging to the Station corps.

The results of these investigations are published in the form of bulletins, which record mostly the experiments of the Station’s own staff of investigators. There will also be issued from time to time in the form of circulars, compilations giving the results of the experiments of engineers, industrial works, technical institutions, and governmental testing departments.

The volume and number at the top of the title page of the cover are merely arbitrary numbers and refer to the general publications of the University of Illinois; _either above the title or below the seal is given the number of Engineering Experiment Station bulletin or circular, which should be used in referring to these publications_.

For copies of bulletins, circulars, or other information address the Engineering Experiment Station, Urbana, Illinois.

ACOUSTICS OF AUDITORIUMS

AN INVESTIGATION OF THE ACOUSTICAL PROPERTIES OF THE AUDITORIUM AT THE UNIVERSITY OF ILLINOIS.