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figure1long_wavesimg1figure_10_42_labeledlongitudinal_waveform_projectionwavedi  

Sound waves are often simplified in terms of Sinusoidal plane waves, which are characterized by these generic properties：

  • Frequency, or its inverse, the Period

  • Wavelength

  • Wavenumber

  • Amplitude

  • Sound pressure

  • Sound intensity

  • Speed of sound

  • Direction of sound

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