The present invention relates to a device and a method for reasoning a motion using an electromyogram signal. According to the present invention, the method comprises the steps of: receiving an electromyogram signal acquired from an electromyography sensor attached to a forearm part of a user; estimating a sleep period noise signal power using a non-operational section of the electromyogram signal, and extracting a feature value for an operational section using the operational section; compensating the extracted feature value by reflecting the estimated sleep period noise signal power; and reasoning an operation of the user corresponding to the compensated feature value using a maximum likelihood estimation (MLE) method. According to the present invention, the feature value is compensated by using sleep period noise signal power of the electromyogram signal detected from the electromyogram sensor attached to the forearm part, thereby accurately reasoning an operation.
APPARATUS FOR GESTURE REASONING BASED ON ELECTROMYOGRAM SIGNALS AND METHOD THEREOF