Approximate MVDR and MMSE beamformers exploiting scale-invariant reconstruction of signals on microphones
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24220%2F16%3A00000313" target="_blank" >RIV/46747885:24220/16:00000313 - isvavai.cz</a>
Result on the web
<a href="https://asap.ite.tul.cz/publications/conference-papers/" target="_blank" >https://asap.ite.tul.cz/publications/conference-papers/</a>
DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Approximate MVDR and MMSE beamformers exploiting scale-invariant reconstruction of signals on microphones
Original language description
Minimum Variance Distortionless Response (MVDR) and Minimum Mean-Squared Error (MMSE) beamformers are popular array processors for enhancing multichannel recordings of a directional source. We propose their approximate variants having the generalized sidelobe canceler structure whose performances depend purely on the blocking matrix part. No auxiliary methods such as adaptive interference canceler or voice activity detector to estimate the source/noise covariance are needed. Instead, scale-invariant least square estimators are used, which enable to estimate the noise also during speech activity and to recover original spectra of the target source on the microphones. In experiments, we compare signal-to-noise ratio improvements of several variants of the beamformers achieved on six-channel recordings of speech in nonstationary noisy conditions
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
JC - Computer hardware and software
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GA14-11898S" target="_blank" >GA14-11898S: Semi-blind methods in speech enhancement with microphone arrays</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
2016 International Workshop on Acoustic Signal Enhancement, IWAENC 2016
ISBN
978-1-5090-2007-2
ISSN
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e-ISSN
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Number of pages
5
Pages from-to
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Publisher name
Institute of Electrical and Electronics Engineers Inc.
Place of publication
Xi’an, China
Event location
Xi’an, China
Event date
Jan 1, 2016
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000386654100044