Interval of equivalence: Difference between revisions
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This equivalence is so strong that in most musical notation systems, notes separated by octaves share the same name. | This equivalence is so strong that in most musical notation systems, notes separated by octaves share the same name. | ||
For the same reason, most [[scale]]s repeat at the octave. | For the same reason, most [[scale]]s repeat at the octave. | ||
The physical basis for octave equivalence is believed to be caused by the [[harmonic series|harmonic structure]] of periodic sounds. | |||
When a tone with frequency ''f'' is played, it typically produces [[overtone]]s at 2''f'', 3''f'', 4''f'', etc. | |||
The first overtone (2''f'') is an octave above the fundamental, creating a consistent pattern in many natural sounds. | |||
This harmonic relationship may contribute to the perceptual significance of the octave in human hearing. | |||
The perception of octave equivalence appears to have both biological and cultural components. | The perception of octave equivalence appears to have both biological and cultural components. | ||