Sleepnoise Authors Participants from Vcc Were Eva Lahti (project Manager), Participants from Vti Were Quality Review

Preface The SleepNoise (The effect of noise on driving performance and driver sleepiness) project was initiated by Volvo Car Corporation as a response to anecdotal evidence for increased driver drowsiness related to certain interior sound conditions. The project has been performed as a close collaboration between Volvo Car Corporation (VCC) and the Swedish National Road and Transport Research Institute (VTI) within the competence centre ViP Driving Simulation Centre The work has comprised road surface texture measurements, interior vehicle noise recordings, real-time sound modelling, and an extensive driving simulator experiment. The results of the driving simulator experiment have been reported separately in the scientific paper This report presents the work on the technical aspects of the project, resulting in a detailed sound model needed to study sound-related driver sleepiness in a simulator environment. The sound model developed in this project is available for the ViP partners through the ViPForge 1 software repository. While developed to investigate effects on driver sleepiness, the fidelity of the model makes it very suitable for general use where it contributes to increased realism.