A Delay-Based Double-Talk Detector
Blekinge Institute of Technology, School of Engineering, Department of Signal Processing2012 (English)In: IEEE Transactions on Audio, Speech, and Language Processing, ISSN 1558-7916, E-ISSN 1558-7924, Vol. 20, no 6, 1725-1733 p.Article in journal (Refereed) Published
When an adaptive filter is used for echo cancellation, it is essential to prevent the filter from diverging in situations when the echo signal is contaminated with near-end disturbance, i.e. during double-talk. This paper presents an extension of a previously proposed double-talk detector for improved performance. It is shown that the computational complexity of the proposed detector is lower than that of the well-used normalized cross correlation (NCC) double-talk detector, at the cost of performance. Further, it is shown that there can be a significant performance difference, in terms of detecting double-talk, between having a fixed echo cancellation filter, which is a common strategy in objective evaluation techniques, and an adaptive filter, which is more close to realistic conditions.
Place, publisher, year, edition, pages
2012. Vol. 20, no 6, 1725-1733 p.
Echo cancellation, adaptive filters, double-talk, double-talk detection
IdentifiersURN: urn:nbn:se:bth-7170DOI: 10.1109/TASL.2012.2188512ISI: 000302532000005Local ID: oai:bth.se:forskinfoC8E2C4C849EAE429C12579F700565253OAI: oai:DiVA.org:bth-7170DiVA: diva2:834752