Preferred Frequencies and Frequency Bands

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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.