11-17-11 Sound Localization and Auditory Scene Analysis Continued

11-17-11 Sound Localization and Auditory Scene Analysis Continued

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PSY402 Sensation and Perception November 17, 2011 Sound localization and auditory scene analysis Principles of auditory grouping Onset time Location Similarity of timbre and pitch o Bregman and Campbell experiment o Bregman and Rudnicky experiment o Deutsch experiment Proximity in time : Sounds that occur in rapid succession usually come from the same source Auditory continuity : Sounds that stay constant or change smoothly are usually from the same source (good continuity) o Experiment by Warren et al . Tones were presented interrupted by gaps of silence or by noise. In the silence condition, listeners perceived that the sound stopped during gaps In the noise condition, the perception was that the sound continued behind the noise. Past experience/knowledge o Effect of past experience o Experiment by Dowling Melody “Three Blind Mice” is played with notes alternating between octaves Listeners find it difficult to identify the song
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