TELEVISION BY PULSE CODE MODULATION 49 



integration and the picture observed on the monitor for the added noise case 

 was definitely more "noisy" than the other picture. Even so, most observers 

 agreed that in general the adding of noise was desirable for a system using 

 a small number of digits. 



Acknowledgments 



* 



Many people contributed to the success of this experiment. Mr. O. E. 

 DeLange and Mr. A. F. Dietrich worked along with the writer in the design, 

 building and testing of the equipment. Mr. R. W. Sears, Mr. R. L. Carbrey 

 and Mr. L. A. Meacham should be specially mentioned in connection with 

 the design of the equipment, and Mr. B. M. Oliver assisted in the television 

 tests. Mr. J. C. Schelleng assisted with suggestions and guidance. 



L 



