Preferred Frequencies and Frequency Bands

Octave Octave Octave

(Hz)	1/1	1/2	1/3	(Hz)	1/1	1/2	1/3	(Hz)	1/1	1/2	1/3
16	x	x	x	160			x	1600			x
18				180		x		1800
20			x	200			x	2000	x	x	x
22.4		x		224				2240
25			x	250	x	x	x	2500			x
28				280				2800		x
31.5	x	x	x	315			x	3150			x
35.5				355		x		3550
40			x	400			x	4000	x	x	x
45		x		450				4500
50			x	500	x	x	x	5000			x
56				560				5600		x
63	x	x	x	630			x	6300			x
71				710		x		7100
80			x	800			x	8000	x	x	x
90		x		900				9000
100			x	1000	x	x	x	10000			x
112				1120				11200		x
125	x	x	x	1250			x	12500			x
140				1400		x		14000
160			x	1600			x	16000	x	x	x

Table 11: Table of Preferred Frequencies and Frequency Bands (see Frequency Band Analysis) divided into whole (1/1), half (1/2) and third (1/3) octaves.