Title:
SIGNAL PROCESSING DEVICE, SIGNAL PROCESSING METHOD, AND SIGNAL PROCESSING PROGRAM
Document Type and Number:
WIPO Patent Application WO/2014/168021
Kind Code:
A1
Abstract:
This signal processing device, which is for altering an input sound to an easily heard sound, is provided with: a conversion means that converts an input signal to an amplitude component signal in a frequency region; a steady component estimation means that, on the basis of the amplitude component signal in the frequency region, estimates a steady component signal having a frequency spectrum provided with steady characteristics; a substitution means that, using the amplitude component signal determined by the conversion means and the steady component signal, generates a new amplitude component signal and substitutes the amplitude component signal with the new amplitude component signal; and a reverse transformation means that uses the new amplitude component signal to perform a reverse transformation to an emphasis signal.
Inventors:
KATO MASANORI (JP)
SUGIYAMA AKIHIKO (JP)
SUGIYAMA AKIHIKO (JP)
Application Number:
PCT/JP2014/058961
Publication Date:
October 16, 2014
Filing Date:
March 27, 2014
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
G10L21/0332; G10L21/0232; G10L21/034
Domestic Patent References:
| WO2008111462A1 | 2008-09-18 |
Foreign References:
| JP2003058186A | 2003-02-28 | |||
| JP2006337415A | 2006-12-14 | |||
| JP2002204175A | 2002-07-19 | |||
| JP2013020252A | 2013-01-31 | |||
| JP2004187283A | 2004-07-02 | |||
| JP2009055583A | 2009-03-12 | |||
| JP2012239017A | 2012-12-06 | |||
| JP2012070668A | 2012-04-12 |
Other References:
SHINGO KUROIWA ET AL.: "Wind Noise Reduction Method Using the Observed Spectrum Fine Structure and Estimated Spectrum Envelope", THE TRANSACTIONS OF THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS, vol. J90-A, no. 1, 1 January 2007 (2007-01-01), pages 1 - 12, XP008181293
See also references of EP 2985761A4
M. KATO; A. SUGIYAMA; M. SERIZAWA: "Noise suppression with high speech quality based on weighted noise estimation and MMSE STSA", IEICE TRANS. FUNDAMENTALS (JAPANESE EDITION, vol. J87-A, no. 7, July 2004 (2004-07-01), pages 851 - 860
R. MARTIN: "Spectral subtraction based on minimum statistics", EUSPICO-94, September 1994 (1994-09-01), pages 1182 - 1185
IEEE TRANSACTIONS ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, vol. 32, no. 6, December 1984 (1984-12-01), pages 1109 - 1121
3GPP TECHNICAL SPECIFICATION 26.094, vol. 5.0.0, June 2002 (2002-06-01)
3GPP TECHNICAL SPECIFICATION 26.194, vol. 5.0.0, March 2001 (2001-03-01)
A. DAVIS; S. NORDHOLM; R. TOGNERI: "Statistical Voice Activity Detection Using Low-Variance Spectrum Estimation and an Adaptive Threshold", IEEE TRANSACTIONS ON AUDIO, SPEECH, AND LANGUAGE PROCESSING, vol. 14, no. 2, March 2006 (2006-03-01), pages 412 - 424
K. LI; M.N.S. SWAMY; M.O. AHMAD: "An Improved Voice Activity Detection Using Higher Order Statistics", IEEE TRANSACTIONS ON SPEECH AND AUDIO PROCESSING, vol. 13, no. 5, September 2005 (2005-09-01), pages 965 - 974
See also references of EP 2985761A4
M. KATO; A. SUGIYAMA; M. SERIZAWA: "Noise suppression with high speech quality based on weighted noise estimation and MMSE STSA", IEICE TRANS. FUNDAMENTALS (JAPANESE EDITION, vol. J87-A, no. 7, July 2004 (2004-07-01), pages 851 - 860
R. MARTIN: "Spectral subtraction based on minimum statistics", EUSPICO-94, September 1994 (1994-09-01), pages 1182 - 1185
IEEE TRANSACTIONS ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, vol. 32, no. 6, December 1984 (1984-12-01), pages 1109 - 1121
3GPP TECHNICAL SPECIFICATION 26.094, vol. 5.0.0, June 2002 (2002-06-01)
3GPP TECHNICAL SPECIFICATION 26.194, vol. 5.0.0, March 2001 (2001-03-01)
A. DAVIS; S. NORDHOLM; R. TOGNERI: "Statistical Voice Activity Detection Using Low-Variance Spectrum Estimation and an Adaptive Threshold", IEEE TRANSACTIONS ON AUDIO, SPEECH, AND LANGUAGE PROCESSING, vol. 14, no. 2, March 2006 (2006-03-01), pages 412 - 424
K. LI; M.N.S. SWAMY; M.O. AHMAD: "An Improved Voice Activity Detection Using Higher Order Statistics", IEEE TRANSACTIONS ON SPEECH AND AUDIO PROCESSING, vol. 13, no. 5, September 2005 (2005-09-01), pages 965 - 974
Attorney, Agent or Firm:
KATO TAKASHI (JP)
Takushi Kato (JP)
Takushi Kato (JP)
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