A Double-Talk Detector Using Audio Watermarking
Echo cancellation is one of the most important factors affecting the quality of speech communications using voice-over Internet protocol (VoIP), especially when users have discrete microphones and loudspeakers rather than a standard headset. Because the remote voice appears near the loudspeaker, both the near and far voices appear at the microphone. A new approach to aid the echo-cancelling algorithm embeds a hidden watermark signal into the arriving signal. Detecting this signature allows the algorithm to stop or restart the process of the adaptive echo cancellation.
Click to purchase paper or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!
This paper costs $20 for non-members, $5 for AES members and is free for E-Library subscribers.