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An Improvement of the Two-Path Algorithm Transfer Logic for Acoustic Echo Cancellation
- Lindström, Fredric (author)
- Schüldt, Christian (author)
- Claesson, Ingvar (author)
- IEEE, 2007
- 2007
- English.
- In: IEEE Transactions on Audio, Speech, and Language Processing. - : IEEE. - 1558-7916 .- 1558-7924. ; 15:4, s. 1320-1326
- Journal article (peer-reviewed)
Abstract
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- Adaptive filters for echo cancellation generally need update control schemes to avoid divergence in case of significant disturbances. The two-path algorithm avoids the problem of unnecessary halting of the adaptive filter when the control scheme gives an erroneous output. Versions of this algorithm have previously been presented for echo cancellation. This paper presents a transfer logic which improves the convergence speed of the two-path algorithm for acoustic echo cancellation, while retaining the robustness. Results from simulations show an improved performance, and a fixed-point DSP implementation verifies the performance in real-time
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Signalbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Signal Processing (hsv//eng)
Keyword
- acoustic echo cancellation
- adaptive filtering
- two-path
- parallell filters
- shadow filter
- transfer logic
Publication and Content Type
- ref (subject category)
- art (subject category)
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