PSYCH 2MP3 Lecture Notes - Lecture 12: Absolute Pitch, Beatboxing, Tonality
8 Mar 2020
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Document Summary
Uses different timbres / pitch ranges to manipulate how brain hears different sounds. Looking at gestalt grouping principles to understand how sound is grouped. Looking at individual notes involved in streams. Psychological roots of tonality: built on the pitches of individual notes. Chroma: class of notes, ex: all c" notes share same chroma, results in circularity in pitch. Pitch height: pitch is more linear here (rather than like chroma where we see it in a circle) Together: ph and c produce a helix shephard tone: A sound that is changing continually only in terms of chroma. Each note higher than previous in dimension of chroma but not changing in dimension of height (avg pitch height remains the same from note to note) On a graph: focus on energy shifts, but when you take the average the height stays the same (bcause as energy shifts down, pitch goes up (cancels out) Chroma = most important thing in a melody.
