Adrian U. Dubuisson - Storming Media

Jungle Acoustics III: Effects of an Acoustic Filter on the Detection of Voices through the Jungle Canopy.

JUL 1972

Authors: Delaney A. Dobbins; Adrian U. Dubuisson; ARMY TROPIC TEST CENTER APO NEW YORK 09827

The full text of this report is not available and therefore is not for sale. This information is provided for reference purposes only.

The United States Army Tropic Test Center conducted a study of auditory detectability of human voices from the jungle floor through the canopy in the Panama Canal Zone during October and November 1970 (wet season) and April 1971 (dry season). A total of 240 transmissions were made from a speaker system to acoustic sensors at heights ranging from 5 to 100 feet. Voice transmissions were conducted at slant range distances ...

Jungle Vision VIII. Visual Detection of Moving Targets in a Semievergreen Tropic Forest.

OCT 1971

Authors: Adrian U. Dubuisson; Charles M. Kindick; ARMY TROPIC TEST CENTER APO NEW YORK 09827

The purpose of the study was to determine typical detection distances of moving targets in the tropic forest. Among the major factors considered were effects of season and type of target dress upon detection distances. A total of 120 enlisted men from TO+E units in the Canal Zone were used as observers (60 during the wet season and 60 during the dry season). The observers did not use visual performance ...