Smart VoIP and multimedia terminals

该项目提出了新的方法和算法，可以使新一代的智能音视频多媒体终端的引入。该项目针对两种不同的应用：免提音视频无线电话终端和高端VoIP多媒体终端。在这两种应用中，终端将自动配置，易于使用，并提供上级宽带音频质量和通话体验。该项目的重点是这些终端的音频性能。 该项目中考虑的下一代免提音频视频无线电话将能够处理包括无线VoIP和VoWiFi在内的多种标准。它们也可以集成在其他设备中，如PDA，并可用作扬声器电话。这些手机的尺寸和重量限制，加上多标准要求，将对其音频质量产生负面影响。本计画提出新的语音品质提升、杂讯消除及回音消除方法，以改善新世代无线电话的声音品质。本项目中考虑的先进高保真VoIP多媒体终端配备了麦克风阵列和可选的Pan-Zoom摄像头。他们将能够识别和跟踪房间里不同的谈话者。这些终端将探索VoIP网络的先进功能，如宽带高保真VoIP、立体声电话和音视频集成。该项目探索了新的强大的宽带自适应回声消除器，波束形成器和音视频跟踪系统，以实现新一代智能高端VoIP终端。

This project proposes novel approaches and algorithms that can enable the introduction of a new generation of smart audio-video multimedia terminals. The project aims at two different applications: hands-free audio-video wireless phones terminals and high-end VoIP multimedia terminals. In both applications, the terminals will be auto-configurable, easy to use, and offer a superior broadband audio quality and conversation experience. The project focuses on the audio performance of these terminals.   The next generation of hands-free audio-video wireless phones that are considered in this project will be able to handle multiple standards including wireless VoIP and VoWiFi. They may also be incorporated in other devices such as PDAs and may be used as speaker phones. The size and weight limitations of these phones, coupled with the multi-standards requirement will have a negative impact of their audio quality. This project proposes novel speech quality enhancement, noise cancellation, and echo cancellation approaches to improve the audio quality in this new generation of wireless phones. The advanced high-fidelity VoIP multimedia terminals that are considered in this project are equipped with microphone arrays and optional Pan-Tilt-Zoom cameras. They will be able to identify and track different talkers in a room. These terminals will explore the advanced features of VoIP networks such as broadband high fidelity VoIP, stereophonic telephony, and audio-video integration. This project explores novel robust broadband adaptive echo cancellers, beam-formers, and audio-video tracking systems, to enable this new generation of smart high-end VoIP terminals.