Verfügbarkeit: Allpass-based analysis-synthesis filter-banks

Allpass-based analysis-synthesis filter-banks: design and application

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Bibliographische Detailangaben
1. Verfasser:	Löllmann, Heinrich W. (VerfasserIn)
Format:	Abschlussarbeit Buch
Sprache:	English
Veröffentlicht:	Aachen Mainz 2011
Ausgabe:	1. Aufl.
Schriftenreihe:	Aachener Beiträge zu digitalen Nachrichtensystemen 30
Schlagworte:	Sprachqualität Störunterdrückung Teilband Allpass Laufzeitverzerrung Filtersynthese Frequenzanalyse Signalregenerierung Filterbank Verzögerungszeit Hochschulschrift
Online-Zugang:	Inhaltsverzeichnis
Beschreibung:	VIII, 238 S. graph. Darst. 21 cm
ISBN:	9783861303084 3861303086

Internformat

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Datensatz im Suchindex

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adam_text	IMAGE 1 CONTENTS 1 INTRODUCTION 1 1.1 ALLPASS-BASED FILTER-BANKS 2 1.2 RELATED WORKS & OPEN PROBLEMS 2 1.3 STRUCTURE OF THE THESIS 3 2 FUNDAMENTALS OF DIGITAL FILTER-BANKS 5 2.1 ANALYSIS-SYNTHESIS FILTER-BANKS 5 2.2 MODULATED FILTER-BANKS 10 2.3 POLYPHASE REPRESENTATION 12 2.4 SPECTRAL REPRESENTATION OF MULTI-RATE SYSTEMS 14 2.5 ALLPASS FILTERS 16 3 RECURSIVE QMF-BANKS 21 3.1 TWO-CHANNEL QMF-BANK 22 3.1.1 ALLPASS-BASED QMF-BANKS 24 3.1.2 NEW IIR/IIR QMF-BANK DESIGNS 29 3.2 M-CHANNEL PSEUDO QMF-BANK 36 3.2.1 FILTER-BANK STRUCTURE 37 3.2.2 NEW SYNTHESIS FILTER-BANK DESIGNS 39 3.3 PHASE EQUALIZER DESIGN 42 3.3.1 DESIGN PROBLEM 43 3.3.2 NON-CAUSAL FILTERING 45 3.3.3 NUMERICAL DESIGNS 47 3.3.4 CLOSED-FORM DESIGNS 47 3.4 CONCLUSIONS 55 4 ALLPASS TRANSFORMED ANALYSIS-SYNTHESIS FILTER-BANKS 57 4.1 FREQUENCY WARPING BY ALLPASS TRANSFORMATION 58 4.1.1 ALLPASS TRANSFORMATION OF FIRST ORDER 58 4.1.2 ALLPASS TRANSFORMATION OF HIGHER ORDER 61 4.1.3 ALTERNATIVE FREQUENCY WARPING TECHNIQUES 65 4.2 CLOSED-FORM FILTER-BANK DESIGNS 68 4.2.1 WARPED SYNTHESIS FILTER-BANK 68 4.2.2 FIR SYNTHESIS FILTER-BANKS 70 4.2.3 PHASE EQUALIZER DESIGN FOR WARPED FILTER-BANKS 76 4.2.4 PR DESIGNS 81 4.3 NUMERICAL FILTER-BANK DESIGNS 84 BIBLIOGRAFISCHE INFORMATIONEN HTTP://D-NB.INFO/1017314330 DIGITALISIERT DURCH IMAGE 2 VI CONTENTS 4.3.1 PREVIOUS DESIGNS 84 4.3.2 NEW MATRIX REPRESENTATION 86 4.3.3 CONSTRAINED NPR DESIGN 88 4.3.4 SPARSE DESIGN 94 4.3.5 UNCONSTRAINED PR DESIGN 100 4.3.6 CONSTRAINED PR DESIGN 102 4.4 CONCLUSIONS 110 5 THE FILTER-BANK EQUALIZER 113 5.1 THE UNIFORM FILTER-BANK EQUALIZER 115 5.1.1 PROTOTYPE FILTER DESIGN 117 5.1.2 RELATION BETWEEN GDFT FBE AND GDCT FBE 119 5.1.3 REALIZATION FOR DIFFERENT FILTER STRUCTURES 122 5.1.4 POLYPHASE NETWORK IMPLEMENTATION 124 5.2 THE ALLPASS TRANSFORMED FILTER-BANK EQUALIZER 126 5.3 COMPARISON BETWEEN FBE AND AS FB 129 5.4 FURTHER MEASURES FOR SIGNAL DELAY REDUCTION 131 5.4.1 CONCEPT 131 5.4.2 APPROXIMATION BY A MOVING-AVERAGE FILTER 131 5.4.3 APPROXIMATION BY AN AUTO-REGRESSIVE FILTER 132 5.4.4 ALGORITHMIC COMPLEXITY 133 5.4.5 WARPED FILTER APPROXIMATION 134 5.5 CONCLUSIONS 136 6 APPLICATIONS 137 6.1 QMF-BANK DESIGN FOR SPEECH AND AUDIO CODING 137 6.1.1 CODEC OVERVIEW 138 6.1.2 INNER QMF-BANK 141 6.1.3 OUTER QMF-BANK 146 6.2 LOW DELAY SPEECH ENHANCEMENT 148 6.2.1 NOISE REDUCTION 149 6.2.2 SPEECH DEREVERBERATION 154 6.2.3 NEAR-END LISTENING ENHANCEMENT 155 6.3 CONCLUSIONS 159 7 SUMMARY 161 A ABBREVIATIONS & NOTATION 167 A.I LIST OF ABBREVIATIONS 167 A.2 NOMENCLATURE FOR FILTERS 168 A.3 MATHEMATICAL NOTATION & PRINCIPAL SYMBOLS 169 IMAGE 3 CONTENTS VII B PROOFS & DERIVATIONS 181 B.I EVALUATION OF THE DISCRETE BSF 181 B.2 EQUIRIPPLE PROPERTY OF PARAMETRIC PHASE EQUALIZERS 182 B.2.1 FIR PHASE EQUALIZER 182 B.2.2 IIR PHASE EQUALIZER 186 B.3 CONVERSION FROM QCQP TO SDP DESIGN 188 B.4 RELATION BETWEEN GDCT AND ODDLY-STACKED GDFT 190 B.5 CALCULATION OF WARPED AR FILTER COEFFICIENTS 191 B.6 PRESERVATION OF MINIMUM-PHASE PROPERTY FOR WARPED FILTERS 191 C RELATED FILTER-BANKS 193 C.I FIR/FIR QMF-BANKS 193 C.2 AUDITORY FILTER-BANKS 196 C.2.1 GAMMATONE FILTER-BANKS 196 C.2.2 TREE-STRUCTURED FILTER-BANKS 196 D ERROR NORMS AND OPTIMIZATION METHODS 201 D.I ERROR NORMS 201 D.2 CONVEX PROGRAMS 202 E INSTRUMENTAL MEASURES FOR SPEECH ENHANCEMENT SYSTEMS 205 F DEUTSCHSPRACHIGE ZUSAMMENFASSUNG 207 BIBLIOGRAPHY 217
any_adam_object	1
author	Löllmann, Heinrich W.
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discipline	Elektrotechnik / Elektronik / Nachrichtentechnik
edition	1. Aufl.
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spelling	Löllmann, Heinrich W. Verfasser (DE-588)1018300880 aut Allpass-based analysis-synthesis filter-banks design and application vorgelegt von Heinrich Wilhelm Löllmann 1. Aufl. Aachen Mainz 2011 VIII, 238 S. graph. Darst. 21 cm txt rdacontent n rdamedia nc rdacarrier Aachener Beiträge zu digitalen Nachrichtensystemen 30 Zugl.: Aachen, Techn. Hochsch., Diss., 2011 Sprachqualität (DE-588)4536190-3 gnd rswk-swf Störunterdrückung (DE-588)4312859-2 gnd rswk-swf Teilband (DE-588)4788766-7 gnd rswk-swf Allpass (DE-588)4331021-7 gnd rswk-swf Laufzeitverzerrung (DE-588)4166922-8 gnd rswk-swf Filtersynthese (DE-588)4154391-9 gnd rswk-swf Frequenzanalyse (DE-588)4155397-4 gnd rswk-swf Signalregenerierung (DE-588)4181274-8 gnd rswk-swf Filterbank (DE-588)4154389-0 gnd rswk-swf Verzögerungszeit (DE-588)4400439-4 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Filterbank (DE-588)4154389-0 s Allpass (DE-588)4331021-7 s Teilband (DE-588)4788766-7 s Frequenzanalyse (DE-588)4155397-4 s Filtersynthese (DE-588)4154391-9 s Laufzeitverzerrung (DE-588)4166922-8 s Verzögerungszeit (DE-588)4400439-4 s Signalregenerierung (DE-588)4181274-8 s Sprachqualität (DE-588)4536190-3 s Störunterdrückung (DE-588)4312859-2 s DE-604 Aachener Beiträge zu digitalen Nachrichtensystemen 30 (DE-604)BV010341350 30 DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=025309166&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis
spellingShingle	Löllmann, Heinrich W. Allpass-based analysis-synthesis filter-banks design and application Aachener Beiträge zu digitalen Nachrichtensystemen Sprachqualität (DE-588)4536190-3 gnd Störunterdrückung (DE-588)4312859-2 gnd Teilband (DE-588)4788766-7 gnd Allpass (DE-588)4331021-7 gnd Laufzeitverzerrung (DE-588)4166922-8 gnd Filtersynthese (DE-588)4154391-9 gnd Frequenzanalyse (DE-588)4155397-4 gnd Signalregenerierung (DE-588)4181274-8 gnd Filterbank (DE-588)4154389-0 gnd Verzögerungszeit (DE-588)4400439-4 gnd
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title	Allpass-based analysis-synthesis filter-banks design and application
title_auth	Allpass-based analysis-synthesis filter-banks design and application
title_exact_search	Allpass-based analysis-synthesis filter-banks design and application
title_full	Allpass-based analysis-synthesis filter-banks design and application vorgelegt von Heinrich Wilhelm Löllmann
title_fullStr	Allpass-based analysis-synthesis filter-banks design and application vorgelegt von Heinrich Wilhelm Löllmann
title_full_unstemmed	Allpass-based analysis-synthesis filter-banks design and application vorgelegt von Heinrich Wilhelm Löllmann
title_short	Allpass-based analysis-synthesis filter-banks
title_sort	allpass based analysis synthesis filter banks design and application
title_sub	design and application
topic	Sprachqualität (DE-588)4536190-3 gnd Störunterdrückung (DE-588)4312859-2 gnd Teilband (DE-588)4788766-7 gnd Allpass (DE-588)4331021-7 gnd Laufzeitverzerrung (DE-588)4166922-8 gnd Filtersynthese (DE-588)4154391-9 gnd Frequenzanalyse (DE-588)4155397-4 gnd Signalregenerierung (DE-588)4181274-8 gnd Filterbank (DE-588)4154389-0 gnd Verzögerungszeit (DE-588)4400439-4 gnd
topic_facet	Sprachqualität Störunterdrückung Teilband Allpass Laufzeitverzerrung Filtersynthese Frequenzanalyse Signalregenerierung Filterbank Verzögerungszeit Hochschulschrift
url	http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=025309166&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA
volume_link	(DE-604)BV010341350
work_keys_str_mv	AT lollmannheinrichw allpassbasedanalysissynthesisfilterbanksdesignandapplication

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