Mice have large ears in comparison to their bodies. Mice hear higher frequencies than humans; their frequency range is 1 kHz to 70 kHz or 90 kHz. They do not hear the lower frequencies that we can; they communicate using high frequency noises some of which are inaudible by humans. The distress call of a young mouse can be produced at 40 kHz. The mice use their ability to produce and hear sounds out of our and other predators' frequency ranges to their advantage. They can alert other mice of danger without also alerting the predator to their presence. The squeaks that we can hear a mouse make are lower in frequency and are used by the mouse to make longer distance calls, as the low frequency sound can travel further than the high frequency sounds (Lawlor).
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Anonymous2011-05-12 7:18
inb4 an autistic /anus/rammer faggot paosts a lithpFIOC program that uses FFT to lower the frequency of a recorded signal by a certain factor, not realizing that sound cards can't process frequencies that high
The distress call of a young mouse can be produced at 40 kHz.
Sounds pretty insecure. I can produce a bluebox-like device that will broadcast fake signal and disrupt mice activities.