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Tuesday, July 9 • 11:50 - 12:10
LABORATORY MEASUREMENT OF THE DECTABILITY OF BACK-UP ALARMS : INFLUENCE OF THE PLAYBACK DEVICE

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Detection of back-up alarms in an important safety issue. Two main kinds of alarms are currently available (tonal or broadband ones). The detectability of these two alarms was evaluated in a laboratory experiment. Two playback techniques were used : in the first one, stimuli were presented through headphones. In the second one, a wave-field synthesis was used, so that the subject could freely move his head in the listening room. In both conditions, subjects were asked to achieve a main task (target tracking on a computer screen) while hearing noise recorded on a working site. From time to time, a reversing alarm (tonal or broadband) was presented, emitted from various directions around the listener. The subject had to detect the alarm as soon as possible. The hypothesis of this experiment was that, as the listener could move his head in the array of WFS speakers, detection would be easier in this configuration than when signals are recorded with a dummy head and presented through headphones. Results of this experiment will be presented during the conference.

Moderators
CC

Cédric Camier

Dr, Saint-Gobain Research Paris
avatar for Philippe-Aubert Gauthier

Philippe-Aubert Gauthier

Professor, Groupe Acoustique Université de Sherbrooke, Université de Sherbrooke

Authors

Tuesday July 9, 2019 11:50 - 12:10 EDT
Westmount 4
  T04 Environ. & commun. noise, SS01 Soundscape auralization