Computationally Efficient Doubletalk Detection Using Estimated Loudspeaker Impulse Responses

摘要

For an adaptive acoustic echo canceller to perform well a doubletalk detector has to be present in order to determine when filter adaptation is allowed. Since the doubletalk detector is to be implemented in real-time it is important to have a doubletalk detector with a low computational complexity. In this paper we propose a new approach to doubletalk detection that can be used to reduce the computational complexity of existing algorithms. Furthermore, the numerical example show that the new approach yields better doubletalk detection performance when applied to some of the best existing doubletalk detection algorithms.