The sound of one hand clapping.

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It is when you clap together both hands a sharp sound is heard; when you rise   the one hand there is neither sound or someone makes noise.  The concept of clapping implies that a sound is being produced by two surfaces coming into contact, even if only one of them is actually moving.

 No sound, no clapping; no second surface, no sound. Yet, the riddle definitely states that there is a sound and that there are clapping. Therefore, my answer follows logically when the sound of the one hand is clamping it means that there is someone who is using his or her both hands to create sound for him or a group of people.

When someone claps together his hand a sharp sound is heard, to create sound maybe for music band or to follow the song in the church. People clap their hands to create a sound for many different things. For example some people they clap their hands when they want to call a person that is far from them than they clap their hand if they don’t want to shout at the person. So to my on understanding there is no sound of the one hand, sound comes out when you use both hands.