An electronic device includes a storage unit, a sound signal receiving unit, a remote signal generating unit, a processing unit, and a transmitting unit. The control table records RC devices, sound parameters, and control commands. Each RC device is associated with at least one sound parameter. Each sound parameter corresponds to one control command. The sound signal receiving unit receives sound signals. The processing unit determines a sound parameter according to the received sound signals, searches in the control table to determine the control command the sound parameter corresponding to according to a selected RC device, and controls the remote signal generating unit to generate a remote signal corresponding to the determined control command. The transmitting unit transmits the remote signal to the selected RC device.