If you want to improve your audio quality then cutting down on echoes is a must, and these acoustic ... While the panels are likely more expensive to build than off-the-shelf foam alternatives ...

The acoustic ... panels are built out of individual circles, cut out in a way that uses as much of a 3/16″ (5mm) plywood sheet as possible, with hollow circles serving as frames to attach foam ...

One of the fundamental tools of soundproofing is the foam acoustic panel. While these are used to dampen echoes and sound ...