Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Bind Subband Beamforming with Time-delay Constraints for Moving Source Speech Enhancement
Responsible organisation
2007 (English)In: IEEE Transactions on Audio, Speech, and Language Processing, ISSN 1558-7916, Vol. 15, no 8, 2360-2372  p.Article in journal (Refereed) Published
Abstract [en]

A new robust microphone array method to enhance speech signals generated by a moving person in a noisy environment is presented. This blind approach is based on a two-stage scheme. First, a subband time-delay estimation method is used to localize the dominant speech source. The second stage involves speech enhancement, based on the acquired spatial information, by means of a soft-constrained subband beamformer. The novelty of the proposed method involves considering the spatial spreading of the sound source as equivalent to a time-delay spreading, thus, allowing for the estimated intersensor time-delays to be directly used in the beamforming operations. In comparison to previous approaches, this new method requires no special array geometry, knowledge of the array manifold, or acquisition of calibration data to adapt the array weights. Furthermore, such a scheme allows for the beamformer to efficiently adapt to speaker movement. The robustness of the time-delay estimation of speech signals in high noise levels is improved by making use of the non-Gaussian nature of speech trough a subband Kurtosis-weighted structure. Evaluation in a real environment with a moving speaker shows promising results, with suppression levels of up to 16 dB for background noise and interfering (speech) signals, associated to a relatively small effect of speech distortion.

Place, publisher, year, edition, pages
IEEE , 2007. Vol. 15, no 8, 2360-2372  p.
Keyword [en]
array signal processing, delay estimation, speech enhancement
National Category
Signal Processing
Identifiers
URN: urn:nbn:se:bth-8338ISI: 000250282800016Local ID: oai:bth.se:forskinfoB3F5F191D6F4A989C125750B0059C538OAI: oai:DiVA.org:bth-8338DiVA: diva2:836048
Available from: 2012-09-18 Created: 2008-11-24 Last updated: 2015-06-30Bibliographically approved

Open Access in DiVA

No full text

Search in DiVA

By author/editor
Claesson, Ingvar
In the same journal
IEEE Transactions on Audio, Speech, and Language Processing
Signal Processing

Search outside of DiVA

GoogleGoogle Scholar

Total: 24 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf