Wind wave may be written as: where C is speed (in meters per second), g is the acceleration due to gravity, and d is the depth of the water (in meters). The period of a wave remains unchanged regardless of the depth of water through which it is moving. As deep-water waves enter the shallows and feel the bottom, however, their speed is reduced and their crests "bunch up," so their wavelength shortens. As waves travel from deep to shallow water, their shape alters (wave height increases, speed decreases, and length decreases as wave orbits become asymmetrical). This process is called shoaling.
3D sound reconstruction field can be reconstructed as well. This method is applicable primarily to ultrasound and to lower sound pressures, often in water and in medical imaging. The method works under the assumption that the wave number of the medium is constant. If the wave number is changing throughout the medium, this method cannot reconstruct the three-dimensional sound field as accurately. 3D sound reconstruction 3D sound reconstruction is the application of reconstruction techniques to 3D sound localization technology. These methods of reconstructing three-dimensional sound are used to recreate sounds to match natural environments and provide spatial cues of the sound source. They