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Communication Dans Un Congrès Année : 2020

Relation between perceived urgency of alarm signals and psychoacoustic parameters

Résumé

Many alarm signals can be experienced in ordinary situations (e.g. in a car). Knowing the relation between signal parameters and perceived urgency is important for manufacturers, because the severity of the reported events may be very different. Many studies on this subject have found a correlation between some physical parameters of the signal and the perceived level of urgency. For physical parameters, most of these studies focused on elementary construction parameters such as fundamental frequency, sound level or number or duration of repeated bursts. But it may be asked whether conventional psychoacoustic criteria can be used to evaluate urgency. In this study, this question was addressed by studying the possible links between perceived urgency and two psychoacoustic criteria: sharpness and roughness. To do this, a listening test was conducted using stimuli for which these two parameters could have different levels. 45 people participated to that experiment. Results showed that roughness does not seem to have an influence on the perception of urgency, but sharpness does. However, the link between sharpness and urgency can be different from one listener to another one. While 70% of the participants showed a strong positive correlation between sharpness and perceived urgency, the other ones showed a weaker but still significant negative correlation between these two features.
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Dates et versions

hal-03234190 , version 1 (26-05-2021)

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Jérémy Rouch, Etienne Parizet. Relation between perceived urgency of alarm signals and psychoacoustic parameters. Forum Acusticum, Dec 2020, Lyon, France. pp.2435-2439, ⟨10.48465/fa.2020.0195⟩. ⟨hal-03234190⟩
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