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00:00 The sound range of a cricket's croaking is often located in the treble,
00:03 a frequency range to which our ear is particularly sensitive.
00:08 The frequency of this sound is between 2000 and 4000 Hz.
00:11 These are common frequencies in everyday life
00:14 which correspond to those of the treble voice, but also of the cries of newborns.
00:18 The resonance of these sounds in our auditory system can cause significant discomfort.
00:23 In addition, studies have shown that young children,
00:26 whose auditory cortex is still developing, can be more sensitive to this type of noise.
00:31 This explains why the croaking of the cricket on the board
00:34 seemed particularly unpleasant to us at school.
00:37 (upbeat music)