AIR-STD-61/49 › Complete Document History
Intelligibility of Speech in Noise (Classified - See Your Contracting Officer)


Obsolete Revision Information:
   BASE - INTELLIGIBILITY OF SPEECH IN N - July 30, 1986
   ADV PUB 61/4 - INTELLIGIBILITY OF SPEECH IN N - Jan. 1, 1960
   DISTRIBUTION STATEMENT C - INTELLIGIBILITY OF SPEECH IN N - Jan. 1, 1960