15. An audio analysis terminal comprising: a first audio acquisition device that acquires, using a terminal apparatus, a sound and converts the sound into a first audio signal, the sound containing an utterance of a user and an utterance of another person who is different from the user; a discriminator that discriminates between a portion that corresponds to the utterance of the user and a portion that corresponds to the utterance of the other person which are contained in the first audio signal; an utterance feature detector that detects an utterance feature of the user or the other person, on the basis of the portion that corresponds to the utterance of the user or the portion that corresponds to the utterance of the other person; a transmission unit that transmits to a host system utterance information that contains at least a discrimination result obtained by the discriminator and a detection result obtained by the utterance feature detector; and a second audio acquisition device disposed at a position where a sound pressure of an utterance-based sound that arrives from the mouth of the user differs from a sound pressure of the utterance-based sound that arrives at the first audio acquisition device, the second audio acquisition device acquiring the sound and converting the sound into a second audio signal, wherein the discriminator discriminates between a portion that corresponds to the utterance of the user and a portion that corresponds to the utterance of the other person which are contained in the first audio signal, on the basis of a result of comparing the first audio signal with the second audio signal, and wherein the utterance feature detector detects an utterance feature of the user or the other person, on the basis of the portion that corresponds to the utterance of the user or the portion that corresponds to the utterance of the other person which is contained in the first audio signal or the second audio signal, wherein the shortest distance between the mouth of the user and the first audio acquisition device differs from the shortest distance between the mouth of the user and the second audio acquisition device in a state where the audio analysis terminal is worn by the user.
15. An audio analysis terminal comprising: a first audio acquisition device that acquires, using a terminal apparatus, a sound and converts the sound into a first audio signal, the sound containing an utterance of a user and an utterance of another person who is different from the user; a discriminator that discriminates between a portion that corresponds to the utterance of the user and a portion that corresponds to the utterance of the other person which are contained in the first audio signal; an utterance feature detector that detects an utterance feature of the user or the other person, on the basis of the portion that corresponds to the utterance of the user or the portion that corresponds to the utterance of the other person; a transmission unit that transmits to a host system utterance information that contains at least a discrimination result obtained by the discriminator and a detection result obtained by the utterance feature detector; and a second audio acquisition device disposed at a position where a sound pressure of an utterance-based sound that arrives from the mouth of the user differs from a sound pressure of the utterance-based sound that arrives at the first audio acquisition device, the second audio acquisition device acquiring the sound and converting the sound into a second audio signal, wherein the discriminator discriminates between a portion that corresponds to the utterance of the user and a portion that corresponds to the utterance of the other person which are contained in the first audio signal, on the basis of a result of comparing the first audio signal with the second audio signal, and wherein the utterance feature detector detects an utterance feature of the user or the other person, on the basis of the portion that corresponds to the utterance of the user or the portion that corresponds to the utterance of the other person which is contained in the first audio signal or the second audio signal, wherein the shortest distance between the mouth of the user and the first audio acquisition device differs from the shortest distance between the mouth of the user and the second audio acquisition device in a state where the audio analysis terminal is worn by the user. 17. The audio analysis terminal according to claim 15 , wherein the utterance feature detector detects the utterance feature on the basis of a predetermined feature value of the sound that has been acquired by at least one of the first audio acquisition device and the second audio acquisition device, the feature value being sound pressure or pitch.