Accession Number : AD0656629

Title :   VOICE COMMUNICATION: RETENTION OF IMPROVED INTELLIGIBILITY,

Corporate Author : PURDUE RESEARCH FOUNDATION LAFAYETTE IND

Personal Author(s) : Kelly,J. C. ; Hanley,T. D.

Report Date : 31 JAN 1948

Pagination or Media Count : 22

Abstract : The purpose of this study was to investigate the retention of improved intelligibility for voice communications. The subjects included 176 male undergraduate students at Purdue University, 99 of whom were designated experimental and 77 control. The basic experimental design included the following steps: (A) a pre-training test, including all subjects, experimental and control; (B) a training period for the experimental subjects only, involving one hour of training in loudness and one hour of training in clearness; (C) a post-training test; and (D) re-tests, following the post-training test at intervals of 65 and 100 days. The following results were obtained: (a) Subjects given training maintained superiority over untrained subjects by a margin statistically significant after 65 days and 100 days. (b) Although differences related to type of training can be demonstrated immediately after training, these differences did not persist for 100 days. (c) Training, regardless of type and degree of noise barrier, was more effective than no training at all. (Author)

Descriptors :   (*SPEECH, INTELLIGIBILITY), (*SPEECH TRANSMISSION, TRAINING), RETENTION(PSYCHOLOGY), VOICE COMMUNICATIONS, TRAINING DEVICES, PERFORMANCE(HUMAN), NOISE, EXPERIMENTAL DESIGN, PERFORMANCE(HUMAN)

Subject Categories : Humanities and History
      Voice Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE