PSYC 212 Lecture Notes - Lecture 11: Sound Intensity, Auditory Scene Analysis, Basilar Membrane

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14 Sep 2017
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Sounds are made up of highly complex wave forms. The basilar membrane doesn"t do that for us. Our brain needs grouping cues in sound to know what sound bits belong to which source (segregation rules) What are the rules that the auditory system uses to assign spunds to streams . Sample 1: rate of occurrence and different frequency. What factors cause the separation of the two streams in sample 2. Abrupt rise times lead to segregation of tones. Factors that contribute to stream segregation, identification and maintenance (similarity in frequency, synchrony of frequency modulation, micro-modulation of frequency, abrupt onset, perceptual filling-in and spatial location) A sing along to demonstrate several auditory streaming rules: row, row, row you boat, gently down the stream, meririly, merrily, merrily, merrily, life is but a dream. Lets say you do a magnitude estimation study (like stevens) to measure loudness perception across different volumes. A single standard sound, 1000 hz and 40db.

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