Unique timbre
Sounds differ by pitch (high or low) and by loudness. There is one more important feature: timbre. Timbre is a sound’s own special “colour”: by it we tell whose or what’s sound it is. Every person’s voice is unique, so we recognise a friend by voice even without seeing them. Every musical instrument has its own timbre: a piano, a doira (hand drum) and a rubab sound different even when playing the same note. When many sounds are heard at once in disorder, it is noise. Noise distracts attention and loud noise harms the ears.
Game “Whose voice is it?”: a child stands with their back to the class. Others say their name in turn. The child guesses whose voice it is. Second game “What makes that sound?”: with our backs turned, a friend crumples paper, turns book pages, pours water, taps the table, and we guess what it is. Safety: do not shout loudly; protect your ears from loud noise.