Some Contributions to Adaptive Filtering for Acoustic Multiple-Input/Multiple-Output Systems in the Wave Domain (2016)
Abstract / truncated to 115 words
Recently emerging techniques like wave field synthesis (WFS) or Higher-Order Ambisonics (HOA) allow for high-quality spatial audio reproduction, which makes them candidates for the audio reproduction in future telepresence systems or interactive gaming environments with acoustic human-machine interfaces. In such scenarios, acoustic echo cancellation (AEC) will generally be necessary to remove the loudspeaker echoes in the recorded microphone signals before further processing. Moreover, the reproduction quality of WFS or HOA can be improved by adaptive pre-equalization of the loudspeaker signals, as facilitated by listening room equalization (LRE). However, AEC and LRE require adaptive filters, where the large number of reproduction channels of WFS and HOA imply major computational and algorithmic challenges for the implementation of ... toggle 8 keywordsadaptive filtering – wave domain – acoustic echo cancellation – listening room equalization – listening room compensation – multichannel – mimo systems – WDAF
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