Table 1.

Number of penetrations recorded from the TC, NTC and karthi Naïve groups in half-octave frequency bands.

Frequency band (kHz)	Frequency range (kHz)	TC group (n = 7)	NTC group (n = 4)	Naïve group (n = 9)
0.7	0.595–0.840	1	0	2
1.0	0.841–1.189	13	2	2
1.4	1.190–1.681	9	5	12
2.0	1.682–2.378	33	9	17
2.8	2.379–3.363	8	7	12
4.0	3.364–4.756	5	5	19
5.7	4.757–6.727	18	5	37
8.0	6.728–9.513	13	3	17
11.3	9.514–13.454	27	15	20
16.0	13.455–19.027	30	17	58
22.6	19.028–26.908	13	0	30
32.0	26.909–38.054	42	31	38
45.3	38.055–53.817	25	27	44