Abstract :
THE PROPOSED STANDARDS and definitions given in this article were approved on June 26, 1933 by the sectional committee on acoustical measurements of the American Standards Association. They now are being circulated widely to secure criticism and suggestion and will be reconsidered in light of the comments received. It is for this reason that they were presented before the A.I.E.E. at the 1933 summer convention held in Chicago, Ill., and are being published now in ELECTRICAL ENGINEERING.
