声学基本概念 - 图文

Frequency Range of Different Sound Sources

110100100010 000

Frequency[Hz]

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Audible Range

110100100010 000

Frequency[Hz]

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Wavelength

Wavelength,λ[m]

Speed of sound, c = 344 m/s

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Wavelength and Frequency

cλ=fλλWavelength,λ[m]

20105210.20.10.051020501002005001 k2 k5 k10 kFrequency, f [Hz]

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Diffraction of Sound

b<< λb >> λbbExample :b = 0.1 m

λ = 0.344 m (≈ f = 1 kHz)

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Example:b = 1 m

λ = 0.344 m (≈ f = 1 kHz)