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Comparison of interior and exterior acoustics. The left panel shows the change of median loudness ΔLN50 for the interior vs. the peak loudness outdoors (LN5, 7.5 m). Orange denotes the passenger car, blue the truck and grey shows data from the first interior measurement. The right panel shows the predicted urgency as a function of predicted annoyance (using data from 25 m). Error bars show 95% confidence intervals.
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