Hearing and Mechanoreceptors

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Presentation transcript:

Hearing and Mechanoreceptors

Waves of compression move from a sound source.

Frequency = how many waves pass a point/ unit time = cycles per second = Hertz Wave height = amplitude Wave length

Range of human hearing 20 Hz to 20,000 Hz Children – up to 25,000 Hz Dogs – up to 40 kHz Bats – up to 100 kHz Intensity if proportional to amplitude squared. A decibel scale is used where 0 is the threshold of human hearing (10 watts/m2) Loudness is related to intensity but it also influenced by frequency. We are more sensitive to sounds in the 2-4kHz range