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NOISE ABSORBING RESONATER |
Comment
from Mr.Tozawa |
Sound absorbents such as felt, glass wool
and cotton are called porous sound absorbing
material. There is formed a considerable clearance
gaps and fine pores between fibers. When vibrate the air
of fine pores, sound energy is converted to thermal energy
and be absorbed. It is said that the method is difficult to
absorb the low tone of a wavelength of 1m greater or
equal and 300Hz less or equal. Tozawa styled
resonater is particularly-beneficial sound
absorbing material to 2kHz and below. The resonater
absorbs noise after conversion to the paper
vibration. |
Contrast Needle Felt with Tozawa
Styled Resonater |
Needle
felt one is a dark and a cloudy sound compared with
Tozawa styled one. In other words, Tozawa styled one is
a brightly and a sharp sound compared with needle felt
one. Additionally, that learned to identify
the individual sound. | |
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