musicman 在 2004-2-21 12:03:08 发表的内容
吸收高音和低音的吸音材料有什么不同？其放置的位置应合理地放在什么位置？ 请高手指点。L版有无相关的资料推荐？谢谢。 |
Absorbing materials has different absorbing factor depending on the
material. But almost no material can effectively absorb low frequency such as below 200 Hz where we usually use bass trap, Holmoltz resonator to
deal with these frequencies.
The theory is either the bass trap or resonator be tuned to some target low frequency, then it vibrates then generate heat to cancell out the target
frequencies. The absorbing band width also depends on the Q factor of the bass trap. The lower the Q, the broader the absorbing bandwidth, or
vice versa.
Most of the soft materials absorbs mid to high frequencies but they also
have a particular band to absorb.
If you want to know materials' absorbing coefficient, you may leave you
mail box to me then I can send to you but they are in English. Hope you
can read them.
