System for robot to eliminate own sound source

A system for robot to eliminate own sound source, comprising:

• a pickup unit, for collecting digital signals mixed with left and right channels and outputting;
• a sound card drive unit, connecting to said pickup unit, for mixing the received reference signals of sound source of the robot itself with the digital signals mixed with left and right channels to form mixed speech signals and outputting;
• a signal separation unit, connecting to said sound card drive unit, for separating the mixed speech signals into the digital signals mixed with left and right channels and the reference signals, and judging whether interference signals existing in the digital signals mixed with left and right channels, and acquiring playing semaphores and outputting the digital signals mixed with left and right channels and the reference signals and the playing semaphores;
• when the system plays music, the playing semaphores are set to True, when the systems don't play music, the playing semaphores are set to False;
• a sound source elimination unit, connecting to said signal separation unit, for receiving reference signals, playing semaphores and digital signals mixed with left and right channels, and eliminating interference signals in the digital signals mixed with left and right channels according to the semaphores, and outputting;
• and
• a recognition unit, connecting to said sound source elimination unit, for recognizing digital signals mixed with left and right channels.