BISOPE series
44- Point, Line, and Plane(square) sound sources (distance attenuation)
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A sound source is a source that generates sound power.
If sound sources are classified in the form of poles, they can be classified
into monopole, dipole, and quadrupole sound sources. Among them, a
point source is a source that is radiated forming a spherical wave from a small
sphere that periodically expands and contracts as a result of a change in
volume, and is also called a monopole source.
In addition, when countless point sources form a straight line, this form like
a train is called a line source.
The power radiated from the sound source decreases
linearly in the area that can be assumed to be a free sound field (an area that
is not very close to the sound source and the sound pressure decreases
uniformly as the distance increases). '. In other words, the farther the distance, the
quieter the sound. However, the attenuation ratio of the sound power according to
the distance is different depending on the shape of the sound source. That is,
points decay quickly and lines decay slowly. explain this
distance attenuation according to the
sound source
point, line and plane are explained by speaker, train and wall.
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