The sound which is produced due to a mixture of several frequencies is called
node
note
tone
noise
The sound which is produced due to a mixture of several frequencies is called note.
A sound produced by the mixture of several frequencies is called
'Note' is a sound :
(a) of a mixture of several frequencies
(b) of mixture of only two frequencies
(c) of a single frequency
(d) always unpleasant to listen to