Signal Subspace Speech Enhancement with Oblique Projection and Normalization

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dc.contributor.authorSurendran, Sudeep
dc.contributor.authorKumar, T. Kishore
dc.coverage.issue4cs
dc.coverage.volume26cs
dc.date.accessioned2018-06-18T10:29:51Z
dc.date.available2018-06-18T10:29:51Z
dc.date.issued2017-12cs
dc.description.abstractIn this paper, a subspace speech enhancement method handling colored noise using oblique projection is proposed. Perceptual features and variance normalization are used to reduce residual noise and improve speech intelligibility of the output. Initially, additive noise is removed from the noisy speech by removing the orthogonal noise subspace from the noisy speech subspace to obtain the speech subspace. Then, the oblique projection of the noise subspace on the speech subspace along the additive noise subspace is used to determine the colored noise that remains. The enhanced clean speech signal is estimated using Spectral Domain Constrained Estimator, incorporating the masking property of the auditory system and the variance of the colored noise. To avoid the occurrence of any abrupt spikes in the output, variance normalization is performed by adaptively changing the control parameter of the gain matrix. The spectrogram, objective measures and subjective intelligibility test show superior performance of the proposed method over other existing speech enhancement methods.en
dc.formattextcs
dc.format.extent1161-1168cs
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRadioengineering. 2017 vol. 26, č. 4, s. 1161-1168. ISSN 1210-2512cs
dc.identifier.doi10.13164/re.2017.1161en
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/82948
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttp://www.radioeng.cz/fulltexts/2017/17_01_1161_1168.pdfcs
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.accessopenAccessen
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subjectSpeech enhancementen
dc.subjectsignal subspace approachen
dc.subjectmasking propertyen
dc.subjectoblique projectionen
dc.subjectvariance normalizationen
dc.titleSignal Subspace Speech Enhancement with Oblique Projection and Normalizationen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
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