Detectability and hearing impression of additional warning sounds for electric or hybrid vehicles

Katsuya Yamauchi, Takaichi Sano, Shin Hasegawa, Fumio Tamura, Yuichiro Takeda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

Electric or hybrid electric vehicles (EVs/HEVs) have the advantages that they make lesser noise compared to conventional engine vehicles. This quietness is, however, a matter of concern for pedestrians because the sound of EVs/HEVs may be inaudible in urban backgrounds. Hence, the application of additional sound- emitting device has been studied. Gathering wide range of acoustic knowledge on feasible design of the additional sounds is crucial for developing regulations or designing the device itself. Through the authors' re- searches, it has been revealed that the type of warning sounds significantly affected the required sound level as well as background levels. A warning sound stimulus, which had lesser loudness level, had lesser detectabil- ity. In this present study, the authors confirmed that the warning sounds could have similar detectability if they have similar loudness level. The frequency characteristics of the stimuli were varied while having equiv- Alent powers in each 1/3 octave band so that they shall have equivalent loudness level. Moreover, the hearing impression of the stimuli were examined. The results showed that the impression of warning sounds could be varied while having equal detectability.

Original languageEnglish
Title of host publicationINTERNOISE 2014 - 43rd International Congress on Noise Control Engineering
Subtitle of host publicationImproving the World Through Noise Control
EditorsJohn Davy, Marion Burgess, Charles Don, Liz Dowsett, Terry McMinn, Norm Broner
PublisherAustralian Acoustical Society
ISBN (Electronic)9780909882037
Publication statusPublished - Jan 1 2014
Externally publishedYes
Event43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014 - Melbourne, Australia
Duration: Nov 16 2014Nov 19 2014

Publication series

NameINTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control

Other

Other43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014
CountryAustralia
CityMelbourne
Period11/16/1411/19/14

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

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  • Cite this

    Yamauchi, K., Sano, T., Hasegawa, S., Tamura, F., & Takeda, Y. (2014). Detectability and hearing impression of additional warning sounds for electric or hybrid vehicles. In J. Davy, M. Burgess, C. Don, L. Dowsett, T. McMinn, & N. Broner (Eds.), INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control (INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control). Australian Acoustical Society.