PSYB51H3 Lecture Notes - Lecture 10: Auditory Scene Analysis, Missing Fundamental, Fundamental Frequency
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Can tell because of distance between different frequencies. If played a sound first with certain frequencies were deleted parts of the cortex more adapted than others (that are stimulated) neurons more active because more adaptation. If listen to the sound; the ones under the (cid:396)ed (cid:449)ill (cid:396)espo(cid:374)d less (cid:271)e(cid:272)ause adapted to it al(cid:396)ead(cid:455) (cid:894)patte(cid:396)(cid:374) fo(cid:396) (cid:448)o(cid:449)el (cid:862)ee(cid:863)(cid:895) = diminished response. Attack and decay of sound: attack: part of a sound during which amplitude increases (onset, decay: part of a sound during which amplitude decreases (offset) Auditory scene analysis: segregating sound sources, grouping, the ventriloquist effect. E. g frog, bird and splash: source segregation, or auditory scene analysis. I(cid:374) perception, a term introduced by a school of thought stressing that the perceptual whole could be greater than the sum of its parts. Grouping by timbre: tones that have increasing and decreasing frequencies, or tones that deviate from rising/falling pattern, (cid:862)pop out(cid:863) of se(cid:395)ue(cid:374)(cid:272)e, http://www. youtube. com/watch?v=ipzr9bhei_o (4:23 min)
