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The impact of workload on the ability to localize audible alarms
Very little is known about people's ability to localize sound under varying workload conditions, though it would be expected that increasing workload should degrade performance. A set of eight auditory clinical alarms already known to have relatively high localizability (the ease with which their location is identified) when tested alone were tested in six conditions where workload was varied. Participants were required to indicate the location of a series of alarms emanating at random from one of eight speaker locations. Additionally, they were asked to read, carry out mental arithmetic tasks...
Performance acoustique des alarmes de recul tonales et large bande en milieu ouvert en vue d’une utilisation optimale
Ce rapport fait état de travaux portant sur l'audibilité et la localisation auditive des deux grands types d'alarmes de recul (tonale [« bip-bip »] et à large bande de fréquences [« pshit-pshit »]), le fonctionnement des alarmes à niveau autoajustable et l'effet du positionnement des alarmes sur la distribution sonore à l'arrière des véhicules, en vue de favoriser une utilisation optimale de ces dispositifs et de minimiser les risques d'accidents liés au recul des véhicules. Les deux...
Use of moulded hearing protectors by child care workers
An interventional pilot study Background: Employees of a multi-site institution for children and adolescents started to wear moulded hearing protectors (MHPs) during working hours, as they were suffering from a high level of noise exposure. It was agreed with the institutional physician and the German Institution for Statutory Accident Insurance and Prevention in the Health and Welfare Services (BGW) that this presented an opportunity to perform a scientific study to investigate potential beneficial effects on risk of burnout and subjective noise exposure at work when child care workers wear MHPs...
Uni-, bi- and tri-modal warning signals
Effects of temporal parameters and sensory modality on perceived urgency Multi-sensory warnings can potentially enhance risk communication. Hereto we investigated how temporal signal parameters affect perceived urgency within and across modalities. In an experiment, 78 observers rated the perceived urgency of uni-, bi-, and/or tri-modal stimuli as function of 25 combinations of pulse duration (range 100–1600 ms) and inter pulse interval length (100–1600 ms). The results showed that perceived urgency increases with signal rate. Inter pulse interval showed a larger effect than pulse duration...

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