Patent attributes
A sound reproduction device including a sound reproduction control circuit that performs a required computation on audio source data so as to generate sound reproduction data to send to a speaker; a first communication interface circuit that performs communication with a control device; a counter circuit whose count operation is controlled by a control signal received from the control device through the first communication interface circuit, and that outputs a state of the count operation; and an error control circuit that stops generation of the sound reproduction data by the sound reproduction control circuit based on the state of the count operation.