For many decades, hybrid devices have been used to connect 2-wire local circuits and 4-
wire long distance circuits in telephone lines. This leads to a weIl known problem, whereby …

We have discussed the application of high-order adaptive filters to the problem of acoustical
echo cancellation with particular application to hands free telephone systems. We described …

There is a need for echo cancelers for echo paths with long impulse responses (/spl ges/64
ms). This in turn creates a need for more rapidly converging algorithms in order to meet the …

The article reviews, with technical depth, the history of research in audio and
electroacoustics, including electroacoustic devices, noise control, echo cancellation, and …

A new normalized least mean square (NLMS) adaptive filter is first derived from a cost
function, which incorporates the conventional one of the NLMS with a minimum-disturbance …

本文分析了预约网络中采用多路径路由传送数据以保证应用的带宽要求, 和/或端到端时延限制
条件. 文中提出的路由方案综合了单路径和多路径路由的优点: 通过多路径路由以降低呼叫阻塞 …

Many communication devices require real-time tracking of acoustic paths based on noisy
measurements. For this task, solutions such as the Kalman filter are known, which require …

Modern telepresence systems incorporating spatial audio can be realized using
multichannel loudspeaker reproduction in combination with close-up microphones attached …

This paper focuses on the evolving demands for speech recognition in the car and its
corresponding impact on algorithmic and technological development. Till today the major …

Characterising underwater acoustic transducers is essential to optimal signal processing in
sound navigation and ranging systems. Precise characterisation allows for equalisation of …