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System And Method For Speech Enhancement Using A Coherent To Diffuse Sound Ratio - EP3230981

The patent EP3230981 was granted to Nuance Communications on May 6, 2020. The application was originally filed on Dec 12, 2014 under application number EP14907765A. The patent is currently recorded with a legal status of "Revoked".

EP3230981

NUANCE COMMUNICATIONS
Application Number
EP14907765A
Filing Date
Dec 12, 2014
Status
Revoked
Aug 26, 2022
Grant Date
May 6, 2020
External Links
Slate, Register, Google Patents

Patent Summary

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Patent Citations (40) New

Patent citations refer to prior patents cited during different phases such as opposition or international search.

Citation PhasePublication NumberPublication Link
INTERNATIONAL-SEARCH-REPORTUS2011255702
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Non-Patent Literature (NPL) Citations (6) New

NPL citations refer to non-patent references such as research papers, articles, or other publications cited during examination or opposition phases.

Citation PhaseReference TextLink
INTERNATIONAL-SEARCH-REPORT- SCHWARZ et al., "Unbiased coherent-to-diffuse ratio estimation for dereverberation.", (20140900), URL: https://andreas-s.net/papers/schwarz_iwaenc2014.pdf, XP032683881 [Y] 6, 8, 17, 19 * entire document *
OPPOSITION- JEUB MARCO et al., "Blind estimation of the coherent- to-diffuse energy ratio from noisy speech signals", 18 TH EUROPEAN SIGNAL PROCESSING CONFERENCE (EUSIPCO-2010, AALBORG, DENMARK, (20110829), ISSN 2076-1465, pages 1347 - 1351, XP032757339-
OPPOSITION- MYLLYLA et al., "Adaptive beamforming methods for dynamically steered microphone array systems.", IEEE International Conference on Acoustics, Speech and Signal Processing., (20080404), pages 305 - 308, URL: http://202.114.89.42/resource/pdf/ 1525. pdf, XP031250549-
OPPOSITION- B. VAN VEEN et al., "Beamforming: a versatile approach to spatial filtering", IEEE ASSP Magazine, (19880400), vol. 5, no. 2, doi:10.1109/53.665, pages 4 - 24, XP011437205
OPPOSITION- O. HOSHUYAMA et al., "A robust adaptive beamformer for microphone arrays with a blocking matrix using constrained adaptive filters", IEEE Transactions on Signal Processing, (19991010), vol. 47, doi:10.1109/78.790650, pages 2677 - 2684, XP000947154
OPPOSITION- SCHWARZ Andreas; Kellermann Walter 2014 14th International Workshop on Acoustic Signal Enhancement (IWAENC)​, "Unbiased coherent-to-diffuse ratio estimation for dereverberation", 2014 14th International Workshop on Acoustic Signal Enhancement (IWAENC)​, doi:10.1109/IWAENC.2014.6953306, (20140900), pages 6 - 10, URL: https://andreas- s.net/pa pers/schwa rz_iwaenc20 14. pdf, XP032683881

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