EFFECTS OF INTERIOR AIRCRAFT NOISE ON SPEECH INTELLIGIBILITY AND ANNOYANCE

Recordings of the aircraft ambiance from ten different types of aircraft were used in conjunction with four distinct speech interference tests as stimuli to determine the effects of interior aircraft background levels and speech intelligibility on perceived annoyance in 36 subjects. Both speech intelligibility and background level significantly affected judged annoyance. However, the interaction between the two variables showed that above an 85 db background level the speech intelligibility results had a minimal effect on annoyance ratings. Below this level, people rated the background as less annoying if there was adequate speech intelligibility.

• Corporate Authors:

  Bolt, Beranek and Newman, Incorporated

  21120 Vanowen Street
  Canoga Park, CA  United States  91303
• Authors:
  • PEARSONS, K S
  • Bennett, R L
• Publication Date: 1977-8

Media Info

• Pagination: 67 p.

Subject/Index Terms

• TRT Terms: Acoustics; Aircraft; Aircraft cabins; Aircraft noise; Legibility; Motor reactions; Noise; Passenger comfort; Psychological aspects; Sound level; Speech recognition; Tolerance (Psychology); Vehicle compartments
• Uncontrolled Terms: Intelligibility
• Old TRIS Terms: Background noise; Human reactions; Irritation; Noise tolerance; Psychoacoustics
• Subject Areas: Aviation; Environment; Passenger Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00169054
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: NASA-CR-145203 Final Rpt.
• Contract Numbers: NAS1-14463
• Files: TRIS
• Created Date: Jan 30 1978 12:00AM