PSC 136 Lecture Notes - Lecture 9: Pitch Class, Equal Temperament, Tonality
Document Summary
An octave is divided into 12 equal steps (semitones) Pertains to issues of organizing pitch is a music manner. Instead of utilizing all possible pitches (frequencies), a small subset is chosen. All instances (across octaves) of the same note name are collectively referred to as a pitch class or pitch chroma. If the fundamental frequency (f0) of middle c is 261. 626 hz, what is the approx. Using a helix we can geometrically show the relationship between pitch height & pitch chroma (pitch class) 2 different pitches will always have a different pitch height. 2 different pitches may have the same chroma/ class (ex: c & c an octave above it) Interval - the difference in pitch between 2 musical sounds. Melodic interval - 2 notes played in sequence. Harmonic interval - 2 notes played at the same time. Consonance - the combination of notes that are in harmony with each other due to the relationship between their frequencies.
