Headset

A headset, comprising:

• a hollow housing to be worn at an ear of a user;
• a cylindrical ear canal insertion part that is a portion of the housing, and that is provided at a portion of the housing at a side of an ear canal;
• a first sensor for a headset, provided at the ear canal side inside the housing;
• a second sensor for a headset, provided at an opposite side from the ear canal side inside the housing;
• and
• a calculation unit that measures a body temperature of the user based on an output of the first sensor and an output of the second sensor, wherein
• the first sensor comprises a plurality of sensors,
• the second sensor comprises a plurality of sensors, and
• the calculation unit:
• selects a combination of any one of the plurality of sensors of the first sensor and any one of the plurality of sensors of the second sensor, based on a temperature measured from an output of the plurality of sensors of the first sensor and a temperature measured from an output of the plurality of sensors of the second sensor,
• measures the body temperature of the user based on a temperature measured from an output of a sensor included in the selected combination,
• estimates a room temperature that is a temperature outside the housing from the output of the first sensor or the second sensor under a predetermined condition,
• obtains the output of the first sensor and the output of the second sensor,
• selects the combination from a ratio of a first temperature difference between the estimated room temperature calculated for each combination of any one of the plurality of sensors of the first sensor and any one of the plurality of sensors of the second sensor, and a temperature measured from the output of the first sensor, and a second temperature difference between a temperature measured from the output of the second sensor and the temperature measured from the output of the first sensor, and
• measures the body temperature of the user using the temperature measured from an output of sensors included in the selected combination and a parameter established in advance for the combination, wherein the calculation unit:
• estimates a room temperature that is a temperature outside the housing from the output of the first sensor or the second sensor under a predetermined condition wherein, when a temperature measured from the output of the first sensor and a temperature measured from the output of the second sensor are equal, said temperature is estimated as a room temperature outside the housing, and
• after waiting a predetermined time, the calculation unit acquires the output of the first sensor and the output of the second sensor, and measures the body temperature of the user from a first temperature difference between the estimated room temperature and a temperature measured from the output of the first sensor, and a second temperature difference between a temperature measured from the output of the second sensor and the temperature measured from the output of the first sensor.