Abstract: An exemplary character interaction system located at a first site receives character behavior data representative of captured behavior of a real-world performer located at a second site. Based on the character behavior data, the system presents, to an interactive user at the first site, a representation of a virtual character avatar that performs, in real-time synchrony with the real-world performer at the second site, the captured behavior of the real-world performer. During this presentation of the virtual character avatar, the system provides user video data representative of captured behavior of the interactive user for presentation to the real-world performer to allow the real-world performer to interact in real time with the interactive user via the virtual character avatar. The system also generates an augmented representation of an interaction between the virtual character avatar and the interactive user for presentation to a non-interactive observer.

Abstract: An exemplary character interaction system located at a first site receives character behavior data representative of captured behavior of a real-world performer located at a second site. Based on the character behavior data, the system presents, to an interactive user at the first site, a representation of a virtual character avatar that performs, in real-time synchrony with the real-world performer at the second site, the captured behavior of the real-world performer. During this presentation of the virtual character avatar, the system provides user video data representative of captured behavior of the interactive user for presentation to the real-world performer to allow the real-world performer to interact in real time with the interactive user via the virtual character avatar. The system also generates an augmented representation of an interaction between the virtual character avatar and the interactive user for presentation to a non-interactive observer.

Abstract: Echo cancellation for audio/video conferencing uses an inaudible tone added at an originating conference site to the transmitted voice signal, for echo cancellation. The tone, upon receipt with the voice signal at a remote conferencing site and retransmission back to the originating site, is used to determine both the round trip delay of the conferencing link and the acoustic characteristics of the remote site, so as generate an echo cancellation signal for better audio performance.

Abstract: Echo cancellation for audio/video conferencing uses an inaudible tone added at an originating conference site to the transmitted voice signal, for echo cancellation. The tone, upon receipt with the voice signal at a remote conferencing site and retransmission back to the originating site, is used to determine both the round trip delay of the conferencing link and the acoustic characteristics of the remote site, so as generate an echo cancellation signal for better audio performance.