Psychoacoustical Estimation of Selected Acoustic Signals Which Can Be Applied at Pedestrian Crosswalks

• Authors: E. Bogusz , A. Furmann
• Languages of publication: EN

Abstracts

EN

The paper presents a psychoacoustical evaluation of selected acoustic signals, which according to Polish and international recommendations can be applied at pedestrian crosswalks. The aim of the study was the optimal adjustment of parameters of the signals emitted at pedestrian crosswalks, and to meet the expectations of persons with vision impairments as well as nearby residents or workers working near the crossing. The psychoacoustical evaluation of acoustic signals consists of determination of the hearing threshold of signals in the quiet, detection of signals presented against a background of various types of traffic noises (estimated signal-to-noise ratio) and annoyance assessment of signals. Three types of intermittent sounds were analysed: signals with rectangular time pattern filled up with rectangular wave, signals with rectangular time pattern filled up with sinusoidal wave and signals with triangular time pattern filled up with sinusoidal wave. Four fundamental frequencies (550 Hz, 880 Hz, 1580 Hz and 2000 Hz) and two repetition rates (5 Hz and 9 Hz) were tested. The results of the study have shown that the most suitable signals which can be applied at pedestrian crosswalks are the intermittent sounds with rectangular time pattern filled up with rectangular wave of fundamental frequencies 880 Hz and 1580 Hz and repetition rate 5 Hz and the intermittent sounds with rectangular time pattern and triangular time pattern both filled up with sinusoidal wave of fundamental frequencies 1580 Hz and repetition rate 5 Hz.

Keywords

EN

43.66.Cb; 43.66.Dc; 43.66.Ki; 43.66.Lj

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2011
• Volume: 119
• Issue: 6A
• Pages: 925-931

Dates

published

2011-06

Contributors

author

E. Bogusz

• Institute of Acoustics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

author

A. Furmann

• Institute of Acoustics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

References

• 1. A.Y.J. Szeto, N.C. Valerio, R.Ł. Novak, J. Rehabil. Res. Dev. 28, 57 (1991)
• 2. A.C. Scott, J.M. Barlow, B.L. Bentzen, T.L.Y. Bond, D. Gubbe, J. Transportation Research Board 2073, 94 (2008)
• 3. B.L Bentzen, J.M. Barlow, L. Franck, Institute of Transportation Engineers J. 70, 32 (2000)
• 4. A.Y.J. Szeto, N.C. Valerio, R.Ł. Novak, J. Rehabil. Res. Dev. 28, 71 (1991)
• 5. S.R. Wall, D.H. Ashmead, B.L. Bentzen, J. Barlow, Ergonomics 47, 1318 (2004)
• 6. G.R. Watts, N.S. Godfrey, T.A. Savill, Appl. Acoust. 62, 15 (2001)
• 7. List of Act No. 220-.2003, entry 2181 of 23.12 (annex no. 3 point 3.3.5.), Decree of Ministry of Infrastructure, Detailed engineering conditions for road signals and conditions place them on the roads (2003)
• 8. Polish Norm PN-Z-80100-2004, Technical devices for blind persons and persons who have low vision. Sound signalization at the pedestrian crossing with light signalization, 2004 (in Polish)
• 9. ISO 23600-2007(E), Assistive products for persons with vision impairment and persons with vision and hearing impairments - Acoustic and tactile signals for pedestrian traffic lights, 2007 (in Polish)
• 10. E. Bogusz, M.A. Thesis, Adam Mickiewicz University, Poznań 2008
• 11. J.M. Barlow, B.L. Bentzen, L.S. Tabor, Accessible pedestrian signals: synthesis and guide to best practice, NCHRP 3-62, Final report, Web-Only Document, 2003
• 12. T. Poulsen, Appl. Acoust. 15, 363 (1982)
• 13. K. Buerklen, in: Tyflopedagogy, Ed. Z. Sękowska, WSiP, Warsaw 1981, p. 72, Ch. I (in Polish)
• 14. I. Starlinger, W. Niemeyer, Int. J. Audiol. 20, 503 (1981)
• 15. M. Bross, M. Borenstein, Percept. Mot. Skills 55, 963 (1982)
• 16. M. Duś, W. Babicz, Measurements of noise in the environment of national and of a province roads in area of Poznań city, Adam Mickiewicz University, Poznań 2006 (in Polish)
• 17. A. Preis, T. Kaczmarek, H. Wojciechowska, J. Żera, J.M. Fields, Int. J. Occup. Med. Environ. Health 16, 155 (2003)
• 18. J.M. Fields, R.G. De Jong, T. Gjestland, I.H. Flindell, R.F.S. Job, S. Kurra, P. Lercher, M. Vallet, T. Yano, J. Sound Vib. 242, 641 (2001)
• 19. T. Kaczmarek, H. Hafke, A. Preis, S. Sandrock, B. Griefahn, T. Gjestland, Arch. Acoust. 31, 405 (2006)
• 20. E. Zwicker, H. Fastl, Psychoacoustics Facts and Models, Springer Verlag, Berlin 1999

Identifiers

DOI

10.12693/APhysPolA.119.925