ABSTRACTS OF TECHNICAL ARTICLES 519 



consciousness of the importance of theater acoustics. It follows that 

 higher fidelity in reproduction excites greater intolerance of the needless 

 distortion caused by poor acoustics of the theater. To cope with the 

 new situation, engineers have developed new instruments for acoustical 

 analysis, which provide greater precision and facility in detecting 

 defects and in determining the necessary corrections. 



In addition to instrumental developments there have been concur- 

 rent advances in acoustical theory and practice. The result is that 

 the more stringent requirements imposed on the acoustics of the theater 

 by the enlarged frequency and volume ranges can be fulfilled adequately 

 and practically. The paper discusses the requirements and describes 

 some of the available methods for complying with them. 



