9/4: Difference between revisions

Interval information
Ratio	9/4
Factorization	2-2 × 32
Monzo	[-2 2⟩
Size in cents	1403.91¢
Name	Pythagorean ninth
Color name	w9, wa 9th
FJS name	[math]\displaystyle{ \text{M9} }[/math]
Tenney norm (log2 nd)	5.16993
Weil norm (log2 max(n, d))	6.33985
Wilson norm (sopfr(nd))	10
	https://en.xen.wiki/w/File:Jid_9_4_pluck_adu_dr220.mp3; [sound info]
	Open this interval in xen-calc

Latest revision as of 17:12, 31 March 2025

9/4, the Pythagorean ninth; two perfect fifths (3/2 * 3/2); the ratio between the 4th and 9th harmonics; one octave above 9/8. See also ed9/4.

@@ Line 1: / Line 1: @@
-'''9/4'''
+{{Infobox Interval
-|-2 2&gt;
+| Name = Pythagorean ninth
+| Color name = w9, wa 9th
+| Sound = jid_9_4_pluck_adu_dr220.mp3
+}}
-.9100 cents
+'''9/4''', the Pythagorean ninth; two perfect fifths ([[3/2]] * 3/2); the ratio between the 4th and 9th harmonics; one octave above [[9/8]]. See also [[ed9/4]].
-[[File:jid_9_4_pluck_adu_dr220.mp3]] [[:File:jid_9_4_pluck_adu_dr220.mp3|sound sample]]
-Pythagorean ninth; two perfect fifths ([[3/2|3/2]] * 3/2); the ratio between the 4th and 9th harmonics; one octave above [[9/8|9/8]].