Thanks Hilde for the mention of RealTraps. To answer the original question, memory foam is not suitable for acoustic treatment. Like mattress foam and packing foam, memory foam is closed cell. Real acoustic foam is called open cell, and tiny fissures burrow deeply into the material. When sound waves get into those fissures the resulting friction converts the acoustic energy into heat.
Memory foam as bass treatment?
Can memory foam, say from a bed, be used as a bass trap?
I ask because I might repurpose a queen-sized memory foam mattress.
Thoughts?
Thanks.