PSYB51H3 Lecture Notes - Lecture 10: Auditory Scene Analysis, Stereo Display, Multisensory Integration
Document Summary
Lowest frequency of harmonic spectrum: fundamental frequency. Auditory system is acutely sensitive to natural relationships between harmonics (eg. vowels) 2nd, 3rd, and 4th harmonics overlap in peaks every 4 milliseconds. Timbre: psychological sensation by which a listener can judge that 2 sounds that have the same loudness and pitch are dissimilar; conveyed by harmonics and other high frequencies. Perception of timbre depends on context in which sound is heard. Attack: part of a sound during which the amplitude increases (onset) Decay: part of sound during which the amplitude decreases (offset) Acoustic environment can be busy; multiple sound sources. How auditory system sorts out these sources source segregation. Strategies to segregate sound sources: spatial separation between sounds; motion parallax, separation on basis of sounds; spectral or temporal qualities: Auditory stream segregation: perceptual organization of a complex acoustic signal into separate auditory events for which each stream is heard as a separate event: grouping by timbre:
