The effect of microphone placement on localization accuracy with electronic pass-through earplugs

D. S. Brungart, A. J. Kordik, C. S. Eades, B. D. Simpson

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

14 Scopus citations

Abstract

Many audio applications make use of electronic pass-through listening devices that intercept the signals entering a listener's ears and electronically process them in real time. An important issue in designing such devices is ensuring that they maintain the listener's natural ability to localize sound sources. Previous research suggests that optimal localization requires a completely-in-the-canal (CIC) design with a system bandwidth of at least 13 kHz. However, most practical designs have to make engineering compromises in terms of bandwidth and/or microphone placement that cause some degradation in localization performance. The paper compares open-ear localization to localization with seven different pass-through devices: five custom-molded earplugs with different microphone configurations; a CIC hearing aid; an electronic earmuff. The results show that earplugs interfere substantially less with localization than earmuffs, but that the frequency response has a larger impact on performance than does physical configuration in earplug systems that are bandlimited to frequencies below 6 kHz.

Original languageEnglish
Title of host publication2003 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics Proceedings, WASPAA 2003
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages149-152
Number of pages4
ISBN (Electronic)0780378504
DOIs
StatePublished - 2003
Externally publishedYes
EventIEEE Workshop on Applications of Signal Processing to Audio and Acoustics, WASPAA 2003 - New Paltz, United States
Duration: 19 Oct 200322 Oct 2003

Publication series

NameIEEE Workshop on Applications of Signal Processing to Audio and Acoustics
Volume2003-January

Conference

ConferenceIEEE Workshop on Applications of Signal Processing to Audio and Acoustics, WASPAA 2003
Country/TerritoryUnited States
CityNew Paltz
Period19/10/0322/10/03

Keywords

  • Acoustical engineering
  • Auditory system
  • Bandwidth
  • Degradation
  • Design engineering
  • Ear
  • Frequency response
  • Maintenance engineering
  • Microphones
  • Signal processing

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