$loudspeaker sound diffraction$

$loudspeaker sound diffraction$

The white region is a cross-section of the front part of an aircraft engine, the sound wave is produced by the turbofan. This behavior changes for different frequencies. The animation below shows another example of diffraction. More videos on YouTube Observe how the speakers can seem to go out of phase as the bar rotates. Thus, this solution for noise reduction is efficient only if the houses are located within the shadow region of the sound barrier.

$loudspeaker sound diffraction$

It is characterised by low noise levels due only to the acoustic diffracted wave. A shadow region is observed just behind the barrier (bottom right of the animation). Interference patterns due to the superposition of the incident wave and the diffracted wave are clearly seen just before the barrier (bottom left of the animation). The animation below illustrates how a travelling wave emitted from the upper left corner by, say, an aeroplane is diffracted by a sound barrier erected to shield homes from the traffic noise. An example of diffraction phenomena is given by the spreading of waves around an obstacle. Diffraction occurs if a wave encounters an object and if the wavelength is of the same size (or greater than) the object size. The spreading of waves when they pass through an opening, or around an obstacle into regions where we would not expect them, is called diffraction. sound field of the loudspeaker system are quantitatively described, with a correction function built to compensate for the diffractive interference.

$loudspeaker sound diffraction$

Loudspeaker sound diffraction