A control method of an apparatus according to an aspect of the present disclosure includes acquiring first vibration data that indicates a vibration of the apparatus produced by a speaker outputting a sound. Then the control method includes storing the acquired first vibration data in a memory. Further, the control method includes acquiring second vibration data that is generated by a vibration sensor detecting a vibration including a vibration based upon a body movement of a user on bedding on which the apparatus is placed. And the control method includes generating amended data by amending the acquired second vibration data using the first vibration data stored in the memory.
