Acoustic echo reduction for multiple loudspeakers and microphones: Complexity reduction and convergence enhancement (2019)
Abstract / truncated to 115 words
Modern devices such as mobile phones, tablets or smart speakers are commonly equipped with several loudspeakers and microphones. If, for instance, one employs such a device for hands-free communication applications, the signals that are reproduced by the loudspeakers are propagated through the room and are inevitably acquired by the microphones. If no processing is applied, the participants in the far-end room receive delayed reverberated replicas of their own voice, which strongly degrades both speech intelligibility and user comfort. In order to prevent that so-called acoustic echoes are transmitted back to the far-end room, acoustic echo cancelers are commonly employed. The latter make use of adaptive filtering techniques to identify the propagation paths between loudspeakers and ... toggle 5 keywordsacoustic echo cancellation – acoustic echo suppression – frequency-domain adaptive filtering – sub-band-domain adaptive filtering – relative transfer function estimation
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