Optimum Multi-rate Filter Bank Design for Speech Enhancement and Communication Systems

多速率信号处理在回波消除、麦克风阵列、语音增强和均衡等信号处理应用中越来越受到重视。该项目旨在通过在坚实的数学基础上开发适当的问题公式，从而获得高性能和高效率的多速率处理设计，从而可以应用强大的优化技术。所开发的多速率系统将导致低复杂性和低功耗的硬件实现，而不会在每个应用程序的性能上做出重大妥协。个人数据助理、移动电话、免提设备和笔记本电脑等对尺寸和成本敏感的通信设备将从该项目的成果中受益匪浅。

Multi-rate signal processing is gaining more and more importance in signal processing applications such as echo cancellation, microphone arrays, speech enhancement and equalisation. This project is aimed at obtaining high performance and high efficiency multi-rate processing designs by developing appropriate problem formulations based on solid mathematical foundations so that powerful optimisation techniques can be applied. The developed multi-rate systems will result in low complexity and low power hardware implementations without significant compromise in performance in each application. Size and cost sensitive of communication devices such as personal data assistants, mobile telephones, hands-free devices, and laptops will benefit greatly from the outcome of the project.