Hearing Protection and Speech Intelligibility of Two Nonstandard Inflight Communication Headsets.

reportActive / Technical Report | Accession Number: ADA146110 | Open PDF

Abstract:

This study evaluated the hearing protection and voice communications effectiveness of two standard earmuff hearing protectors modified to function as voice communications headsets. Both modified units contained the AF standard H-143 inflight receivers and the M-87 noise cancelling boom microphone. Hearing protection and voice communication performance of the modified units were compared to those of the H-157 headset at four intensity levels of a noise spectrum that was generally flat from 63 Hz to 5000 Hz 80, 95, 105, 115 dB 20 microPa. The results showed that the H-157 headset provided more hearing protection than either of the modified headsets, especially in the higher frequencies. The modified headsets provided better speech intelligibility than the H-157 headset. Wearability problems were noted with the modified headsets which may become a problem in the operational situation. Author

Author(s):
Prohaska, A. M. ; Nixon, C. W.
Author Organization(s):
AIR FORCE AEROSPACE MEDICAL RESEARCH LAB WRIGHT-PATTERSON AFB OH
Descriptive Note:
Special rept.,
Pagination:
0027

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
AFAMRL-SR-84-504
Task Number(s):
20
Project Number(s):
7231
 Subject Terms
Joint Capability Areas:
JCA_6_Net Centric; JCA_6.1_Information Transport; JCA_5_Command and Control; JCA_5.3.2_Apply Situational Understanding; JCA_5.3_Planning; JCA_1_Force Support; JCA_6.3.3_Spectrum Management; JCA_6.4.1_Secure Information Exchange; JCA_1.2_Force Preparation; JCA_6.2.1_Information Sharing; JCA_6.2.2_Computing Services; JCA_1.2.1_Training; JCA_6.3_Net Management; JCA_6.4_Information Assurance
Communities of Interest:
Biomedical
Descriptor(s):
*PROTECTION, *EARPHONES, FREQUENCY, SPECTRA, SPEECH, NOISE, INTELLIGIBILITY, HEARING, VOICE COMMUNICATIONS
Field(s)/Group(s):
Civil Engineering, Voice Communications
Keyword(s):
Earmuff protectors, WUAFAMRL72312003, PE62202F
Report Date:
1984 Jul 01