Accession Number:

AD0657469

Title:

AN EXPERIMENTAL COMPARISON OF 5 CONDITIONS FOR VOICE COMMUNICATION TRAINING,

Descriptive Note:

Corporate Author:

PURDUE UNIV LAFAYETTE IND

Personal Author(s):

Report Date:

1947-07-10

Pagination or Media Count:

17.0

Abstract:

Five groups of undergraduate men were trained to increase word-intelligibility under difficult communication conditions, using course content founded on experience gained during World War II. Each group was trained in a situation presenting a different type or amount of interference. Effects of training were evaluated by word-intelligibility tests and by judgments of connected speech. All tests were presented under conditions of high level airplane-type noise. All training conditions required high effort on the part of speakers in order to be understood. Comparison of increases in word-intelligibility of experimental and control subjects showed that a Subjects which practiced under most severe noise conditions gained least. b Subjects trained under conditions of noise 10 VU less severe, gained substantially more than those trained under most severe noise. c Subjects trained under a condition presenting a less intense noise than used in b above, gained substantially more than any other group. The noise used with this group consisted of garbled speech signals. d Two practice conditions which did not employ an interphone system produced slightly greater gains than the severe noise condition, but less than the condition presenting a reduced level of airplane noise b. e Experimental subjects gained substantially more than control subjects who were given the same tests after preliminary indoctrination in use of equipment. Author

Subject Categories:

  • Humanities and History
  • Voice Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE