Voice-controlled television set and operating method thereof

摘要

A device and method of eliminating the interference to a voice command from the sound from the speaker, thereby improving the success rate of speech recognition even in the presence of the direct and echoed sound. The present invention comprises a device producing an estimated signal representing the interfering sound at a microphone, and acquiring an interference-free signal by subtracting the estimated interfering signal from the interfered signal while minimizing an error signal.