Which is the better sound froof material?
Answer:
IF you want to absorb sound like in a room, you line the walls and ceiling with foam pyramids to create an anechoic chamber. The poor man's method is extra layers of drywall and old carpet.
Drywall itself has very good sound-absorbing properties due to the combination of its density, which makes it burn a lot of acoustic energy as sound passes through it, and its porosity, which forces the sound to see alternating acoustic impedance as it passes through.
What exactly is it that you want to soundproof?
Someting semisoft like rubber would be good as it has high distortion,obsorption quotient.
a mirror? as it reflect the sound waves like it does with the light waves
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