Sound is produced when any object starts vibrating by any means. these vibrations travel from the source all round the environment through the particles of the environment yjus, it reaches to its destinations, i.e our ear. Now, it enters our ear and travels down a canal at the end of which a thin membrane is strached tightly known as eardrum. the eardrum sends vibrations to inner part of the ear and finally reaches to thr brain and we hear the sounds.