960/853: Difference between revisions
m Normalising usage of Infobox Interval |
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{{Novelty}} | |||
{{Infobox Interval | {{Infobox Interval | ||
| Name = EAS Attention Tone, EAS major second | | Name = EAS Attention Tone, EAS major second | ||
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}} | }} | ||
'''960/853''' is an interval extremely close to the Pythagorean major second [[9/8]], differing by the [[Unnoticeable comma|unnoticeable]] [[superparticular]] comma of 2560/2559. | '''960/853''' is an interval extremely close to the Pythagorean major second [[9/8]], differing by the [[Unnoticeable comma|unnoticeable]] [[superparticular]] comma of [[2560/2559]]. | ||
Sine tones with frequencies of | Sine tones with frequencies of 960 Hz and 853 Hz, sounded together, comprise the "Attention Tone" used by the U.S {{w|Emergency Alert System #EAS header|Emergency Alert System}} over public broadcasting. Using these exact tones over broadcast media is {{w|Emergency Alert System #Tone usage outside of alerts|illegal in the United States}}, in order to protect the integrity of the system. | ||
[[Category:Sonifications]] | |||