Music
While some instruments (trombone, theremin, etc.) can play a tone at any arbitrary frequency, other instruments (such as pianos) can only play a limited set of tones. The very popular "twelve-tone equal temperament" selects tones from the geometric sequence
where k is typically 440 Hz, though other standards have been used. However, other less common tuning systems have also been historically important as preferred audio frequencies.
Since 210≈103, 21/12≈103/120=101/40, and the resultant frequency spacing is very similar to the R40 series.
Read more about this topic: Preferred Number
Famous quotes containing the word music:
“Truly fertile Music, the only kind that will move us, that we shall truly appreciate, will be a Music conducive to Dream, which banishes all reason and analysis. One must not wish first to understand and then to feel. Art does not tolerate Reason.”
—Albert Camus (1913–1960)
“As polishing expresses the vein in marble, and grain in wood, so music brings out what of heroic lurks anywhere. The hero is the sole patron of music.”
—Henry David Thoreau (1817–1862)
“If mass communications blend together harmoniously, and often unnoticeably, art, politics, religion, and philosophy with commercials, they bring these realms of culture to their common denominator—the commodity form. The music of the soul is also the music of salesmanship. Exchange value, not truth value, counts.”
—Herbert Marcuse (1898–1979)