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  • Comparing Harmonic Similarity Measures Using Extracted Chord Features and Ground-Truth Data

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    Overview of Music and Computation

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    A Primer on Western Music Theory

    Notes: The Basic Building Block

    In music, a note is the most basic element. A note is based on pitch, a subjective and perceptual property. Though the pitch of a note is closely related and usually resembles its objective physical frequency (as measured in Hertz, or cycles per second, of a waveform), pitch differs in that its semantic meaning is derived from the listener. This distinction can be demonstrated with a visual analogy used by Terheardt(Terhardt 1974) in figure \ref{fig:virtualpitch2} in which the word aureplacedverbaa is apparent even though the visual information suggests only shadow – a pitch can be heard even if its perceived frequency is not physically present. A note also consists of a duration.

    [Terheardt’s visual pitch analogy]Terheardt’s visual pitch analogy. In this illusion, the eye perceives contours not present. Pitch describes the information received by a listener even if physical frequencies are not present.