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2022 Vol.16, Issue 2 Preview Page

Research Article

Effect of Acoustic Calibration Factors of Measurement Equipments on Test Results of Floor Impact Noises

음향측정 장비의 교정 요인이 바닥충격음 측정 결과에 미치는 영향

Yong-Hee Kim1
,
Jun-Oh Yeon2*
김 용희1
,
연 준오2*
1Assistant Professor, Department of Architectural Engineering, Youngsan University, Yangsan, Korea
2Principal Researcher, Smart Safety Center, Korea Marine Equipment Research Institute, Busan, Korea
1영산대학교 건축공학과 조교수
2한국조선해양기자재연구원 스마트안전센터 책임연구원
*Corresponding Author
30 April 2022. pp. 158-172
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Abstract

This study investigated the effects of calibration factors of acoustic measurement equipments on results of floor impact noises to construct more reliable test system in terms of acoustic calibrator, frequency analyser and microphones. Acoustic calibrator provides reference sound pressure level of 94 dB at 1,000 Hz, then a correction value is derived by coupling it to each microphone in advance to the measurement. Floor impact measurement data using a heavy-weight impact source was employed to examine other calibration factors. Since calibration values of a multi-channel frequency analyzer are provided in terms of voltage value in V, a conversion method is suggested by converting it into a level value in dB so as to compare with sound pressure levels. As for the calibration report of individual microphone, its sensitivity value in V/Pa was converted into a level value in dB for each frequency band. By summing up above acoustic calibration factors for each channel of the frequency analyser, the corrected levels of the floor impact measurement data showed no significant difference with the uncorrected data.

Keywords
Frequency analyzer
Microphone
Calibration
Correction value
Floor impact sound
키워드
주파수 분석기
마이크로폰
교정
보정 값
바닥충격음
References
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Information
  • Publisher :Korean Institute of Architectural Sustainable Environment and Building Systems
  • Publisher(Ko) :한국건축친환경설비학회
  • Journal Title :Journal of Korean Institute of Architectural Sustainable Environment and Building Systems
  • Journal Title(Ko) :한국건축친환경설비학회논문집
  • Volume : 16
  • No :2
  • Pages :158-172
  • Received Date : 2022-03-10
  • Revised Date : 2022-03-28
  • Accepted Date : 2022-03-29
  • DOI :https://doi.org/10.22696/jkiaebs.20220014
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