Efficient implementations of complex and real valued filter banks for comparative subband processing with an application to adaptive filtering

Research output: Contribution to conferencePaper

Abstract

In this paper, we discuss efficient methods to implement correlation type algorithms in subbands. Based on a polyphase representation, a modulated GDFT filter bank with arbitrary integer decimation ratio can be performed at minimum cost, yielding complex subband signals. Real valued subbands can be achieved by appropriate postprocessing of the complex filter bank. Algorithm specific, complex or real implementation may be better suited, for which we present criteria. For the example of subband adaptive filtering as applied in acoustic echo cancellation, we compare a number of algorithms with respect to their best implementation.

Conference

Conference1st International Symposium on Communication Systems and Digital Signal Processing
CountryUnited Kingdom
CitySheffield
Period6/04/988/04/98

Fingerprint

Adaptive filtering
Filter banks
Processing
Echo suppression
Acoustics
Costs

Keywords

  • filter banks
  • subbands
  • acoustic echo cancellation
  • polyphase representation

Cite this

Weiss, S., Lampe, L., & Stewart, R. (1998). Efficient implementations of complex and real valued filter banks for comparative subband processing with an application to adaptive filtering. 32-35. Paper presented at 1st International Symposium on Communication Systems and Digital Signal Processing, Sheffield, United Kingdom.
Weiss, Stephan ; Lampe, Lutz ; Stewart, Robert. / Efficient implementations of complex and real valued filter banks for comparative subband processing with an application to adaptive filtering. Paper presented at 1st International Symposium on Communication Systems and Digital Signal Processing, Sheffield, United Kingdom.4 p.
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title = "Efficient implementations of complex and real valued filter banks for comparative subband processing with an application to adaptive filtering",
abstract = "In this paper, we discuss efficient methods to implement correlation type algorithms in subbands. Based on a polyphase representation, a modulated GDFT filter bank with arbitrary integer decimation ratio can be performed at minimum cost, yielding complex subband signals. Real valued subbands can be achieved by appropriate postprocessing of the complex filter bank. Algorithm specific, complex or real implementation may be better suited, for which we present criteria. For the example of subband adaptive filtering as applied in acoustic echo cancellation, we compare a number of algorithms with respect to their best implementation.",
keywords = "filter banks, subbands, acoustic echo cancellation, polyphase representation",
author = "Stephan Weiss and Lutz Lampe and Robert Stewart",
year = "1998",
language = "English",
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note = "1st International Symposium on Communication Systems and Digital Signal Processing ; Conference date: 06-04-1998 Through 08-04-1998",

}

Weiss, S, Lampe, L & Stewart, R 1998, 'Efficient implementations of complex and real valued filter banks for comparative subband processing with an application to adaptive filtering' Paper presented at 1st International Symposium on Communication Systems and Digital Signal Processing, Sheffield, United Kingdom, 6/04/98 - 8/04/98, pp. 32-35.

Efficient implementations of complex and real valued filter banks for comparative subband processing with an application to adaptive filtering. / Weiss, Stephan; Lampe, Lutz; Stewart, Robert.

1998. 32-35 Paper presented at 1st International Symposium on Communication Systems and Digital Signal Processing, Sheffield, United Kingdom.

Research output: Contribution to conferencePaper

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T1 - Efficient implementations of complex and real valued filter banks for comparative subband processing with an application to adaptive filtering

AU - Weiss, Stephan

AU - Lampe, Lutz

AU - Stewart, Robert

PY - 1998

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N2 - In this paper, we discuss efficient methods to implement correlation type algorithms in subbands. Based on a polyphase representation, a modulated GDFT filter bank with arbitrary integer decimation ratio can be performed at minimum cost, yielding complex subband signals. Real valued subbands can be achieved by appropriate postprocessing of the complex filter bank. Algorithm specific, complex or real implementation may be better suited, for which we present criteria. For the example of subband adaptive filtering as applied in acoustic echo cancellation, we compare a number of algorithms with respect to their best implementation.

AB - In this paper, we discuss efficient methods to implement correlation type algorithms in subbands. Based on a polyphase representation, a modulated GDFT filter bank with arbitrary integer decimation ratio can be performed at minimum cost, yielding complex subband signals. Real valued subbands can be achieved by appropriate postprocessing of the complex filter bank. Algorithm specific, complex or real implementation may be better suited, for which we present criteria. For the example of subband adaptive filtering as applied in acoustic echo cancellation, we compare a number of algorithms with respect to their best implementation.

KW - filter banks

KW - subbands

KW - acoustic echo cancellation

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M3 - Paper

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Weiss S, Lampe L, Stewart R. Efficient implementations of complex and real valued filter banks for comparative subband processing with an application to adaptive filtering. 1998. Paper presented at 1st International Symposium on Communication Systems and Digital Signal Processing, Sheffield, United Kingdom.