Walls and partitions, acoustic sound is the same. Acting, sound waves travel through to the other side, such as the machine chop wood with loud 100 dBA when the machine is working and the community outside the plant hearing: at 90 dBA when the walls between factories on community noise will keep the volume at a community outside the factory, heard from only 75-80 to 90 dBA dBA, etc. The sound wall is meant to reduce the echo wall in a conference room or a convention hall, more than.
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