Digital Sound & Music: Concepts, Applications, & Science, Chapter 4, last updated 6/25/2013
19
Critical
Band
Center
Frequency
in Hertz
Range of
Frequencies
in Hertz
Bandwidth
in Hertz
Bandwidth
in
Semitones
Relative to
Start*
Bandwidth
in Octaves
Relative to
Start*
1 50 1-100 100

2 150
100200
100 12 1
3 250
200300
100 7 0.59
4 350 300–400 100 5 0.42
5 450 400–510 110 4 0.31
6 570 510–630 120 4 0.30
7 700 630–770 140 3 0.29
8 840 770–920 150 3 0.26
9 1000 920–1080 160 3 0.23
10 1170 1080–1270 190 3 0.23
11 1370 1270–1480 210 3 0.22
12 1600 1480–1720 240 3 0.22
13 1850 1720–2000 280 3 0.22
14 2150 2000–2320 320 3 0.21
15 2500 2320–2700 380 3 0.22
16 2900 2700–3150 450 3 0.22
17 3400 3150–3700 550 3 0.23
18 4000 3700–4400 700 3 0.25
19 4800 4400–5300 900 3 0.27
20 5800 5300–6400 1100 3 0.27
21 7000 6400–7700 1300 3 0.27
22 8500 7700–9500 1800 4 0.30
23 10500 9500–12000 2500 4 0.34
24 13500 12000–15500 3500 4 0.37
25 18775 15500–22050 6550 6 0.5
*See Section 4.3.2 for an explanation of how the last two columns of this table
were derived.
Table 4.4 An estimate of critical bands using the Bark scale
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