Effect of frequency shifting on acceleration impression for designing additional sound for quiet vehicles

Katsuya Yamauchi, Takayuki Shiizu, Fumio Tamura, Yuichiro Takeda

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

2 Citations (Scopus)

Abstract

Regulations regarding additional audible sounds for quiet vehicles have been developing in some governments. Some of the regulations might require the variation of the frequency content as a function of the vehicle speed to make pedestrians easily recognize the vehicle behavior such as acceleration. When the additional sound for quiet vehicles, which is independent from vehicle propulsion mechanism, is designed, it is needed to understand about the relationship between frequency shifting and acceleration impression. To understand the relationship, we designed a Scheffe's pair comparison test using audio-visual stimuli. The visual stimuli were a traveling vehicle on a road monotonically accelerated from stopping. One of them was recorded from the cabin as a view of a passenger and the other was recorded with a camera on the road as a view of a pedestrian. The audio stimuli were mixture of three 1/3-octave band noises, of which frequency shifting were independently controlled. The result showed that frequency shifting could affect to vehicle acceleration impression both for pedestrians and people in cabin. It was also shown that the impression could be affected by not only the ratio of shifting but also the shifting band frequency.

Original languageEnglish
Title of host publication42nd International Congress and Exposition on Noise Control Engineering 2013, INTER-NOISE 2013
Subtitle of host publicationNoise Control for Quality of Life
PublisherOAL-Osterreichischer Arbeitsring fur Larmbekampfung
Pages5323-5328
Number of pages6
ISBN (Print)9781632662675
Publication statusPublished - Jan 1 2013
Externally publishedYes
Event42nd International Congress and Exposition on Noise Control Engineering 2013: Noise Control for Quality of Life, INTER-NOISE 2013 - Innsbruck, Austria
Duration: Sep 15 2013Sep 18 2013

Publication series

Name42nd International Congress and Exposition on Noise Control Engineering 2013, INTER-NOISE 2013: Noise Control for Quality of Life
Volume7

Other

Other42nd International Congress and Exposition on Noise Control Engineering 2013: Noise Control for Quality of Life, INTER-NOISE 2013
CountryAustria
CityInnsbruck
Period9/15/139/18/13

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All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

Cite this

Yamauchi, K., Shiizu, T., Tamura, F., & Takeda, Y. (2013). Effect of frequency shifting on acceleration impression for designing additional sound for quiet vehicles. In 42nd International Congress and Exposition on Noise Control Engineering 2013, INTER-NOISE 2013: Noise Control for Quality of Life (pp. 5323-5328). (42nd International Congress and Exposition on Noise Control Engineering 2013, INTER-NOISE 2013: Noise Control for Quality of Life; Vol. 7). OAL-Osterreichischer Arbeitsring fur Larmbekampfung.