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A Method for Reduce...
A Method for Reduced Finite Precision Effects in Parallel Filtering Echo Cancellation
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Lindström, Fredric (författare)
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Schüldt, Christian (författare)
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Långström, Mikael (författare)
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- Claesson, Ingvar (författare)
- Blekinge Tekniska Högskola,Avdelningen för signalbehandling
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(creator_code:org_t)
- IEEE, 2007
- 2007
- Engelska.
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Ingår i: IEEE transactions on circuits and systems I-Regular Papers. - : IEEE. - 1057-7122. ; 54:9, s. 2011-2018
- Relaterad länk:
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https://bth.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The two-path algorithm is an adaptive filter algorithm based on a parallel filter structure, which has been found to be useful for line echo cancellation as well as for acoustic echo cancellation. It is well known that in finite precision arithmetic, the adaptation process of adaptive algorithms can be reduced or even halted due to finite precision effects. This paper proposes a variant of the two-path scheme where the effects of quantization are reduced, without any significant increase in complexity. The improvement is shown by simulations using bandlimited flat spectrum noise as well as real speech signals.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Signalbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Signal Processing (hsv//eng)
Nyckelord
- adaptive filtering
- LMS
- NLMS
- two-path
- parallell filters
- shadow filter
- fixed point
- precision
- stalling
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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