A 3D shape with all straight edges and flat faces is a polyhedron. Other 3D shapes with least one curved surface are not polyhedra. A 3D shape with regular polygonal faces, meeting at equal angles, is ...

Wired listening might be the ultimate in terms of sound quality, but for convenience, you can't beat a multi-room wireless system. Not only does it give you more versatility in terms of speaker ...

Abstract: This paper is concerned with an acoustical phenomenon called sweeping echo, which manifests itself in a room impulse response as a distinctive, continuous pitch increase. In this paper, it ...