The answer is repousse. It is a method having to hammer
something from the reverse side to produce relief such as to imprint a design
using the other side rather than using the front side of the metal in which it
is described above.
A low pitch will have a low frequency
Especially ceramics and porcelains, and as a result it gave rise to many imitatiors and scammers. <span />
Answer:
A structure with a main area, sometimes surrounded by radiating features
Explanation: