How are concrete blocks for sound deadening?

I have to build a three sided box around my window airconditioner (basemenrt) to deaden the sound of my band coming right through the air conditioner. I am hoping that it will redirect the sound to my back yard and also deaden it some.

How are concrete blocks for sound deadening?microsoft project

this will help....

remember that the sound is in waves

use the blocks to deflect the waves to where you want them

the coarse surface will absorb some, so the sound will be heard more in that area,

if you coat the surface it will reflect more, and less will be heard and directed where you want it.

keep the reflection method in mind when "directing" your sound....

good luck

How are concrete blocks for sound deadening?microsoft powerpoint internet explorer

The concrete will deflect the sound, but will do little to deaden it. You might still end up with sound bouncing off the wall and bothering the neighbor or whoever is complaining. Also, you need to be carefull to not block airflow to your air conditioner. Egg crate shaped foam inside might be more effective in deadening the sound.
Try baffling the sound from inside. If the AC is not in use, some pillows or foam over it will work. Works great for inside of windows also.