The relevant departments of the relevant testing, to prove that this material can effectively improve the indoor sound effect.

经有关专业部门的相关检测，证明本材料能有效的改进室内音色效果。

youdao

The non-linear of buffer material has a distinct effect on the sound insulating property of the composite floor, too.

缓冲材料的非线性对复合地板的隔声性能也有明显的影响。

youdao

Of course it will also effect the freq. 's, and the reflected sound we'll be different then before it hit the surface, although some material have less of a impact on the sound.

当然反射也是会影响到声音的频率，声音被反射的前后对照，是有不同的，尽管一些材料对声音的影响很小。

youdao