Tun tum chu ka thil buaipui engemaw avangin thiamlo chung chungin English a post ka siam ve a ngai tlat mai. Lo diklo deuh leh tihsual deuh ka neih chuan khawngaih in comment lamah min rawn hrilhfiah thei ula ka lawm khawp ang.
Basically sound is something which we can hear. But, technically sound is vibration in a medium such as air, which moves through the medium and affects our ear. When this vibration strike our ear, our brain gives us the sensation of hearing the sound.
This vibration in the medium may be generated by our speech or by playing some musical instrument or by striking onto something etc.