An information processing device connectable to: an input receiving device configured to receive, by voice input, input of a control command directed to a first-type apparatus controllable by infrared ray, the first-type apparatus being an air conditioner or a television; and an infrared output device configured to output infrared ray to the first-type apparatus, the information processing device comprising an output instruction transmission unit configured to receive the control command from the input receiving device and transmit, to the infrared output device, an output instruction to output infrared ray based on the control command, wherein: the information processing device is further connectable to an environmental information detecting device configured to detect environmental information around the first-type apparatus; and the information processing device further comprises a control determination unit configured to receive the environmental information from the environmental information detecting device and determine that the first-type apparatus has been controlled based on the output instruction to output infrared ray and the environmental information, characterized in that: the control determination unit is configured to determine whether the first-type apparatus has been controlled in accordance with the output instruction based on first time when the output instruction being transmitted to the infrared output device, second time when receiving the environmental information from the environmental information detecting device, and amount of change of the environmental information; and the output instruction transmission unit is further configured to retransmit, to the infrared output device, the output instruction when the control determination unit determines that the first-type apparatus has not been controlled. an input receiving device configured to receive, by voice input, input of a control command directed to a first-type apparatus controllable by infrared ray, the first-type apparatus being an air conditioner or a television; and an infrared output device configured to output infrared ray to the first-type apparatus, the information processing device comprising an output instruction transmission unit configured to receive the control command from the input receiving device and transmit, to the infrared output device, an output instruction to output infrared ray based on the control command, wherein: the information processing device is further connectable to an environmental information detecting device configured to detect environmental information around the first-type apparatus; and the information processing device further comprises a control determination unit configured to receive the environmental information from the environmental information detecting device and determine that the first-type apparatus has been controlled based on the output instruction to output infrared ray and the environmental information, characterized in that: the control determination unit is configured to determine whether the first-type apparatus has been controlled in accordance with the output instruction based on first time when the output instruction being transmitted to the infrared output device, second time when receiving the environmental information from the environmental information detecting device, and amount of change of the environmental information; and the output instruction transmission unit is further configured to retransmit, to the infrared output device, the output instruction when the control determination unit determines that the first-type apparatus has not been controlled. the information processing device is further connectable to an environmental information detecting device configured to detect environmental information around the first-type apparatus; and the information processing device further comprises a control determination unit configured to receive the environmental information from the environmental information detecting device and determine that the first-type apparatus has been controlled based on the output instruction to output infrared ray and the environmental information, characterized in that: the control determination unit is configured to determine whether the first-type apparatus has been controlled in accordance with the output instruction based on first time when the output instruction being transmitted to the infrared output device, second time when receiving the environmental information from the environmental information detecting device, and amount of change of the environmental information; and the output instruction transmission unit is further configured to retransmit, to the infrared output device, the output instruction when the control determination unit determines that the first-type apparatus has not been controlled. the control determination unit is configured to determine whether the first-type apparatus has been controlled in accordance with the output instruction based on first time when the output instruction being transmitted to the infrared output device, second time when receiving the environmental information from the environmental information detecting device, and amount of change of the environmental information; and the output instruction transmission unit is further configured to retransmit, to the infrared output device, the output instruction when the control determination unit determines that the first-type apparatus has not been controlled.