An information processing apparatus comprising: a conversion section that converts sensing data in different forms obtained from each of a plurality of sensors each sensing a state related to a performance by a motion of a user; an information processing section that processes the sensing data converted by the conversion section, wherein processing of the sensing data includes extracting feature variables characterizing a state of the performance; and an information output section that outputs feedback information to the user on a basis of a processing result of the information processing section, wherein the conversion section includes an analog-digital signal conversion section that converts sensing data acquired from a first sensor, that outputs sensing data in an analog form, into sensing data in a digital form and outputs the sensing data in the digital form to the information processing section, wherein the analog-digital signal conversion section has a first clock mechanism for synchronizing sensing data in the analog form from the first sensor that outputs the sensing data in the analog form, and a digital-analog signal conversion section that converts sensing data acquired from a second sensor, that outputs sensing data in the digital form, into sensing data in the analog form and outputs the sensing data in the analog form to the analog-digital signal conversion section, wherein the information processing apparatus further comprises: a second clock mechanism that is provided closer to the second sensor that outputs sensing data in the digital form for synchronizing the sensing data from the second sensor, and the information processing section synchronizes the sensing data from the first sensor with the sensing data from the second sensor on a basis of a temporal difference between the first clock mechanism and the second clock mechanism. a conversion section that converts sensing data in different forms obtained from each of a plurality of sensors each sensing a state related to a performance by a motion of a user; an information processing section that processes the sensing data converted by the conversion section, wherein processing of the sensing data includes extracting feature variables characterizing a state of the performance; and an information output section that outputs feedback information to the user on a basis of a processing result of the information processing section, wherein the conversion section includes an analog-digital signal conversion section that converts sensing data acquired from a first sensor, that outputs sensing data in an analog form, into sensing data in a digital form and outputs the sensing data in the digital form to the information processing section, wherein the analog-digital signal conversion section has a first clock mechanism for synchronizing sensing data in the analog form from the first sensor that outputs the sensing data in the analog form, and a digital-analog signal conversion section that converts sensing data acquired from a second sensor, that outputs sensing data in the digital form, into sensing data in the analog form and outputs the sensing data in the analog form to the analog-digital signal conversion section, wherein the information processing apparatus further comprises: a second clock mechanism that is provided closer to the second sensor that outputs sensing data in the digital form for synchronizing the sensing data from the second sensor, and the information processing section synchronizes the sensing data from the first sensor with the sensing data from the second sensor on a basis of a temporal difference between the first clock mechanism and the second clock mechanism. a second clock mechanism that is provided closer to the second sensor that outputs sensing data in the digital form for synchronizing the sensing data from the second sensor, and the information processing section synchronizes the sensing data from the first sensor with the sensing data from the second sensor on a basis of a temporal difference between the first clock mechanism and the second clock mechanism.