• Kerstin Dittrich
  • Daniel Oberfeld


The influence of individual temporal portions of a level-fluctuating noise on global annoyance judgments was measured using perceptual weight analysis (cf. Berg, 1989). For loudness judgments it has been found that listeners attach greater weight to the beginning and the ending than to the middle of a stimulus (e.g. Oberfeld & Plank, 2005). Similar weights were expected for annoyance. Annoyance and loudness judgments were obtained from 12 listeners for the same stimuli in a two-interval forced-choice task. The results demonstrated a primacy effect for the temporal weighting of both annoyance and loudness. A recency effect was observed only for annoyance, although the temporal weights for loudness and annoyance were only marginally significantly different. A control experiment showed that the listeners were capable of independently judging the stimuli according to either their loudness or their annoyance: Noises with the same energy-equivalent level but different modulation depths were judged to differ in annoyance but not in loudness.

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