A layer of painted canvas isn't soundproof, so there will be some effect to have panels behind painting VS not. It won't be the same response the panel was designed for, but it should be better than the painting on a bare wall.
You could also size the panel bigger than the paintin to sort of highlight it, or use some sort of standoff to space the painting off of the panel slightly.
John C.
You could also size the panel bigger than the paintin to sort of highlight it, or use some sort of standoff to space the painting off of the panel slightly.
John C.