How do odd-shaped ceilings, decorative panels, draperies, and glass windows affect echo and noise?

I think they decrease echo and reduce noise, they do this by either absorbing vibrations or by scattering the sound so that echoes arrive at different times rather than reverberating as a standing wave. An echo is a reflection of a sound that arrives at the listener with a delay after the direct sound. The delay is usually proportional to the distance of the reflecting surface from the source and the listener.

Amagnetic field "does not" interact with stationary electric charges. so, a.hope my answer you : )