Frequency: Difference between revisions
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== Intervals and concordance == | == Intervals and concordance == | ||
When two notes are played at once where their frequency spectra share a high-amplitude frequency, these two notes sound concordant when played together. If the two notes have frequency spectra where all non-negligible frequencies are multiples of the lowest frequency (as is the case with most methods of sound production, including the human voice, most instruments, and square/saw/triangle waves) they will sound concordant when | When two notes have frequencies a:b where b/a is rational, the interval between the two notes is within [[Just intonation]] and denoted b/a. | ||
When two notes are played at once where their frequency spectra share a high-amplitude frequency, these two notes sound concordant when played together. If the two notes have frequency spectra where all non-negligible frequencies are multiples of the lowest frequency (as is the case with most methods of sound production, including the human voice, most instruments, and square/saw/triangle waves) they will sound concordant when the interval between them is within just intonation (especially if the just-intonation ratio is low complexity). If these two notes are related by the [[just intonation]] interval b/a, then the frequency they share lies at [[Lcm|LCM]](a, b). | |||
== References == | == References == | ||
<references /> | <references /> | ||