Headset
A headset includes: a hollow housing ( 10 ) to be worn at an ear of a user; a cylindrical ear canal insertion part ( 12 ) that is a portion of the housing ( 10 ), and that is provided at a portion of the housing ( 10 ) at a side of an ear canal; a driver ( 14 ) for signal output, provided at an interior of the housing ( 10 ); a microphone ( 18 ) provided so as to collect a signal propagating at a second hollow part ( 16 A), extending from inside an ear canal insertion part ( 12 ) and different from a first hollow part ( 12 A) inside the ear canal insertion part ( 12 ), through which a signal output from the driver ( 14 ) propagates; and a computation unit ( 22 ) configured to measure a temperature inside the ear canal based on a collected signal collected by the microphone ( 18 ) at a time when a measurement signal is output from the driver ( 14 ).
1 . A headset for use by being worn at an ear of a user comprising:
a hollow housing;
a cylindrical ear canal insertion part that is a portion of the housing, and that is adapted to be inserted into an ear canal of the user when the headset is worn by the user;
a driver for signal output, provided at an interior of the housing;
a first hollow part provided inside the ear canal insertion part, through which a signal output from the driver propagates;
a second hollow part that is different from the first hollow part, extending from inside the ear canal insertion part, the second hollow part including a space formed between an inner surface of the ear canal insertion part and the driver;
a microphone provided so as to collect a signal propagating at the second hollow part; and
a computation unit configured to measure a temperature inside the ear canal of the user when the headset is worn by a user based on a collected signal collected by the microphone at a time at which a measurement signal is output from the driver,
wherein the computation unit measures the temperature inside the ear canal of the user based on the measurement signal output from the driver and the collected signal collected by the microphone,
wherein the driver sequentially outputs the measurement signal that changes at each of a plurality of predetermined frequencies, and
wherein the computation unit specifies, from among the plurality of predetermined frequencies, a frequency at which the measurement signal output from the driver and the collected signal collected by the microphone exhibit a predetermined relationship, and measures the temperature inside the ear canal of the user from the specified frequency using a predetermined correspondence between the frequency and the temperature.
2 . The headset according to claim 1 , wherein the predetermined relationship is a relationship corresponding to an in-phase correlation or an antiphase correlation between the measurement signal output from the driver and the collected signal collected by the microphone.
3 . The headset according to claim 1 , wherein the predetermined relationship is a relationship in which an addition or subtraction result of the measurement signal output from the driver and the collected signal collected by the microphone becomes a maximum value or a minimum value.
4 . The headset according to claim 1 , wherein the second hollow part includes a groove formed along an axial direction of the ear canal insertion part.
5 . A headset for use by being worn at an ear of a user, comprising:
a hollow housing;
a cylindrical ear canal insertion part that is a portion of the housing, and that is adapted to be inserted into the ear canal of the user when the headset is worn by the user;
a driver for signal output, provided at an interior of the housing;
a first hollow part provided inside the ear canal insertion part, through which a signal output from the driver propagates;
a second hollow part that is different from the first hollow part, extending from inside the ear canal insertion part, the second hollow part including a space formed between an inner surface of the ear canal insertion part and the driver;
a plurality of microphones provided at positions separated from each other so as to collect signals propagating at the second hollow part; and
a computation unit configured to measure a temperature inside the ear canal of the user based on a collected signal collected by the microphone at a time at which a measurement signal is output from the driver,
wherein the driver sequentially outputs the measurement signal that changes at each of a plurality of predetermined frequencies, and
wherein the computation unit specifies, from among the plurality of predetermined frequencies, a frequency at which the collected signals collected by each of the plurality of microphones exhibit a predetermined relationship, and measures the temperature inside the ear canal of the user from the specified frequency using a predetermined correspondence between the frequency and the temperature.
6 . The headset according to claim 5 , wherein the predetermined relationship is a relationship corresponding to an in-phase correlation or an antiphase correlation among the collected signals collected by each of the plurality of microphones.
7 . The headset according to claim 5 , wherein the predetermined relationship is a relationship in which an addition or subtraction result of the collected signals collected by each of the plurality of microphones becomes a maximum value or a minimum value.
8 . The headset according to claim 5 , wherein the second hollow part includes a groove formed along an axial direction of the ear canal insertion part.
9 . A headset for use by being worn at an ear of a user, comprising:
a hollow housing;
a cylindrical ear canal insertion part that is a portion of the housing, and that is adapted to be inserted into an ear canal of the user when the headset is worn by the user;
a driver for signal output, provided at an interior of the housing;
a first hollow part provided inside the ear canal insertion part, through which a signal output from the driver propagates;
a second hollow part that is different from the first hollow part, extending from inside the ear canal insertion part, the second hollow part including a space formed between an inner surface of the ear canal insertion part and the driver;
a third hollow part that is different from the first hollow part and the second hollow part, extending from inside the ear canal insertion part;
a microphone provided so as to collect a signal propagating at the second hollow part and a signal propagating at the third hollow part; and
a computation unit configured to measure a temperature inside the ear canal based on a collected signal collected by the microphone at a time at which a measurement signal is output from the driver,
wherein the driver sequentially outputs the measurement signal that changes at each of a plurality of predetermined frequencies, and
wherein the computation unit specifies, from among the plurality of predetermined frequencies, a frequency at which the collected signal collected by the microphone becomes a maximum value or a minimum value, and measures the temperature inside the ear canal of the user from the specified frequency using a predetermined correspondence between the frequency and the temperature.
10 . The headset according to claim 9 , wherein the second hollow part includes a groove formed along an axial direction of the ear canal insertion part.