According to one embodiment, a graphics processing unit detects characteristics of video data by analyzing frames of the video data by using at least one first processing core of a plurality of processing cores, and applies a process, which is associated with the detected characteristics of the video data, to audio data on a memory, by using at least one second processing core of the plurality of processing cores. The graphics processing unit includes an audio signal output interface and outputs an audio signal corresponding to the audio data, to which the process has been applied, to a sound device.