Enhancement by postfiltering for speech and audio coding in ad-hoc sensor networks

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorDas, Snehaen_US
dc.contributor.authorBäckström, Tomen_US
dc.contributor.departmentDept Signal Process and Acousten
dc.contributor.groupauthorSpeech Communication Technologyen
dc.contributor.groupauthorSpeech Interaction Technologyen
dc.date.accessioned2023-05-03T06:20:47Z
dc.date.available2023-05-03T06:20:47Z
dc.date.issued2021-01-15en_US
dc.descriptionTarkista bibliografiset tiedot, kun julkaistu.
dc.description.abstractEnhancement algorithms for wireless acoustic sensor networks (WASNs) are indispensable with the increasing availability and usage of connected devices with microphones. Conventional spatial filtering approaches for enhancement in WASNs approximate quantization noise with an additive Gaussian distribution, which limits performance due to the non-linear nature of quantization noise at lower bitrates. This work proposes a postfilter for enhancement based on Bayesian statistics to obtain a multidevice signal estimate, which explicitly models the quantization noise. The experiments using perceptual signal-to-noise ratio, perceptual evaluation of speech quality, and MUSHRA (multistimulus with hidden reference and anchors) scores demonstrate that the proposed postfilter can be used to enhance signal quality in ad hoc sensor networks.en
dc.description.versionPeer revieweden
dc.format.extent7
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationDas, S & Bäckström, T 2021, ' Enhancement by postfiltering for speech and audio coding in ad-hoc sensor networks ', JASA Express Letters, vol. 1, no. 1, 015206 . https://doi.org/10.1121/10.0003208en
dc.identifier.doi10.1121/10.0003208en_US
dc.identifier.issn2691-1191
dc.identifier.otherPURE UUID: bea37d29-713e-422e-b8c9-86769839f5f5en_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/bea37d29-713e-422e-b8c9-86769839f5f5en_US
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85123176729&partnerID=8YFLogxKen_US
dc.identifier.otherPURE LINK: https://arxiv.org/pdf/2011.03810.pdfen_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/106912159/015206_1_online.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/120611
dc.identifier.urnURN:NBN:fi:aalto-202305032932
dc.language.isoenen
dc.publisherAcoustical Society of America
dc.relation.ispartofseriesJASA Express Lettersen
dc.relation.ispartofseriesVolume 1, issue 1en
dc.rightsopenAccessen
dc.titleEnhancement by postfiltering for speech and audio coding in ad-hoc sensor networksen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion
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