Signal processing apparatus and control method thereof

摘要

A signal processing apparatus and a control method thereof are provided. The signal processing apparatus includes: a signal processor which respectively processes an input video signal and an input audio signal; a communication unit which is communicably linked with an external audio output unit that outputs the audio signal; and a controller which controls the signal processor to delay and process one of the video signal and the audio signal by a delay value corresponding to the external audio output unit if the external audio output unit is predetermined.