960/853: Difference between revisions
Created page with "{{Infobox Interval|Ratio=960/853|Cents=204.586397|Name=EAS Attention Tone, EAS major second|Color name=853uy2|FJS name=M2<sup>5</sup><sub>853</sub>}} '''960/853''' is an inte..." |
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{{Infobox Interval | {{Infobox Interval | ||
| Name = EAS Attention Tone, EAS major second | |||
| Color name = 853uy2 | |||
}} | |||
'''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 960Hz and 853Hz, sounded together, comprise the "Attention Tone" used by the U.S [[wikipedia:Emergency_Alert_System#EAS_header|Emergency Alert System]] over public broadcasting. Using these exact tones over broadcast media is [[wikipedia:Emergency_Alert_System#Tone_usage_outside_of_alerts|illegal in the United States]], in order to protect the integrity of the system. | Sine tones with frequencies of 960Hz and 853Hz, sounded together, comprise the "Attention Tone" used by the U.S [[wikipedia:Emergency_Alert_System#EAS_header|Emergency Alert System]] over public broadcasting. Using these exact tones over broadcast media is [[wikipedia:Emergency_Alert_System#Tone_usage_outside_of_alerts|illegal in the United States]], in order to protect the integrity of the system. | ||