Question

what is an sound and notice.

Answer 1

The sound recording copyright symbol, represented by the graphic symbol ℗ (a circled capital letter P), is the copyright symbol used to provide notice of copyright in a sound recording (phonogram) embodied in a phonorecord (LPs, audiotapes, cassette tapes, compact discs, etc.).

Answer 2

hi friends

what is a sound?

everything which makes noise is called sound.
or
sound is that which we hear.

for example raining, music, blowing of horn, etc.

thank you