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Doppler Effect - II01:05

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The Doppler effect has several practical, real-world applications. For instance, meteorologists use Doppler radars to interpret weather events based on the Doppler effect. Typically, a transmitter emits radio waves at a specific frequency toward the sky from a weather station. The radio waves bounce off the clouds and precipitation and travel back to the weather station. The radio frequency of the waves reflected back to the station appears to decrease if the clouds or precipitation are moving...
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Related Experiment Video

Updated: May 14, 2026

An Automated System for Sound Localization Testing in Hearing-Impaired Listeners
07:52

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Published on: March 13, 2026

Developmental differences in auditory detection and localization of approaching vehicles.

Benjamin K Barton1, Roger Lew, Casey Kovesdi

  • 1Department of Psychology and Communication Studies, University of Idaho, 875 Perimeter Drive, Moscow, ID 83844-3043, United States. barton@uidaho.edu

Accident; Analysis and Prevention
|January 30, 2013
PubMed
Summary

Children and adults have varying abilities to detect and locate approaching vehicles using sound. This auditory perception is crucial for pedestrian safety, especially with quieter electric cars on the road.

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Area of Science:

  • Auditory perception
  • Human factors
  • Developmental psychology

Background:

  • Pedestrian safety is a major concern in the US, with numerous annual injuries.
  • Auditory cues are vital for pedestrians to detect vehicles, but this is understudied.
  • The rise of quiet hybrid and electric vehicles necessitates a better understanding of auditory detection.

Purpose of the Study:

  • To investigate developmental differences in how children and adults detect and localize approaching vehicles using auditory information.
  • To assess the impact of vehicle speed and approach direction on auditory detection performance.

Main Methods:

  • A study involving 50 children (ages 6-9) and 35 adults.
  • Participants' ability to detect and localize approaching vehicles based on auditory cues was measured.
  • Performance was analyzed in relation to participant age, vehicle speed, and direction of approach.

Main Results:

  • Significant variations in performance were observed across different age groups.
  • Vehicle speed and direction of approach were found to influence detection and localization accuracy.
  • Children's performance differed notably from adults, indicating developmental effects.

Conclusions:

  • Understanding age-related differences in auditory cue utilization is essential for enhancing pedestrian safety.
  • The findings highlight the need for further research into auditory perception in diverse pedestrian environments.
  • Developmental data can inform safety strategies, particularly concerning novel vehicle technologies.