High-frequency bandwidth extension in the time domain

Details High-frequency bandwidth extension in the time domain High-frequency bandwidth extension in the time domain

2011-03-22

2011-03-22

Abebe, Daniel D (Department: 2626)

Data processing: speech signal processing, linguistics, language

Audio signal bandwidth compression or expansion

C704S200000, C704S223000, C381S023000

Reexamination Certificate

active

07912729

ABSTRACT:
A system extends the high-frequency spectrum of a narrow band audio signal in the time domain. The system extends the harmonics of vowels by introducing a non linearity in a narrow band signal. Extended consonants are generated by a random-noise generator. The system differentiates the vowels from the consonants by exploiting predetermined features of a speech signal.

REFERENCES:
patent: 4255620 (1981-03-01), Harris et al.
patent: 4343005 (1982-08-01), Han et al.
patent: 4672667 (1987-06-01), Scott et al.
patent: 4700360 (1987-10-01), Visser
patent: 4741039 (1988-04-01), Bloy
patent: 4873724 (1989-10-01), Satoh et al.
patent: 4953182 (1990-08-01), Chung
patent: 5086475 (1992-02-01), Kutaragi et al.
patent: 5335069 (1994-08-01), Kim
patent: 5345200 (1994-09-01), Reif
patent: 5371853 (1994-12-01), Kao et al.
patent: 5396414 (1995-03-01), Alcone
patent: 5416787 (1995-05-01), Kodama et al.
patent: 5455888 (1995-10-01), Iyengar et al.
patent: 5497090 (1996-03-01), Macovski
patent: 5581652 (1996-12-01), Abe et al.
patent: 5771299 (1998-06-01), Melanson
patent: 5950153 (1999-09-01), Ohmori et al.
patent: 6115363 (2000-09-01), Oberhammer et al.
patent: 6144244 (2000-11-01), Gilbert
patent: 6154643 (2000-11-01), Cox
patent: 6157682 (2000-12-01), Oberhammer
patent: 6195394 (2001-02-01), Arbeiter et al.
patent: 6208958 (2001-03-01), Cho et al.
patent: 6226616 (2001-05-01), You et al.
patent: 6295322 (2001-09-01), Arbeiter et al.
patent: 6504935 (2003-01-01), Jackson
patent: 6513007 (2003-01-01), Takahashi
patent: 6539355 (2003-03-01), Omori et al.
patent: 6577739 (2003-06-01), Hurtig et al.
patent: 6615169 (2003-09-01), Ojala et al.
patent: 6681202 (2004-01-01), Miet et al.
patent: 6691083 (2004-02-01), Breen
patent: 6704711 (2004-03-01), Gustafsson et al.
patent: 6829360 (2004-12-01), Iwata et al.
patent: 6889182 (2005-05-01), Gustafsson
patent: 6895375 (2005-05-01), Malah et al.
patent: 7181402 (2007-02-01), Jax et al.
patent: 7191136 (2007-03-01), Sinha et al.
patent: 7248711 (2007-07-01), Allegro et al.
patent: 7461003 (2008-12-01), Tanrikulu
patent: 7546237 (2009-06-01), Nongpiur et al.
patent: 2001/0044722 (2001-11-01), Gustafsson et al.
patent: 2002/0128839 (2002-09-01), Lindgren et al.
patent: 2002/0138268 (2002-09-01), Gustafsson
patent: 2003/0009327 (2003-01-01), Nilsson et al.
patent: 2003/0050786 (2003-03-01), Jax et al.
patent: 2003/0093278 (2003-05-01), Malah
patent: 2003/0158726 (2003-08-01), Philippe et al.
patent: 2004/0028244 (2004-02-01), Tsushima et al.
patent: 2004/0158458 (2004-08-01), Sluijter et al.
patent: 2004/0166820 (2004-08-01), Sluijter et al.
patent: 2004/0174911 (2004-09-01), Kim et al.
patent: 2004/0264721 (2004-12-01), Allegro et al.
patent: 2005/0021325 (2005-01-01), Seo et al.
patent: 2005/0267739 (2005-12-01), Konito et al.
patent: 2007/0105269 (2007-05-01), Maher et al.
patent: 2007/0124140 (2007-05-01), Iser et al.
patent: 2007/0150269 (2007-06-01), Nongpiur et al.
patent: 0 497 050 (1992-08-01), None
patent: 0 706 299 (1996-04-01), None
patent: WO 98/06090 (1998-02-01), None
patent: WO 01/18960 (2001-03-01), None
patent: WO 2005/015952 (2005-02-01), None
Qian et al, “Combining Equalization and Estimation of Bandwith Extension of Narrowband Speech,” Acoustics, Speech, and Signal Processing, 2004. Proceedings. (ICASSP '04). IEEE International Conference on May 2004, pp. I-713-716.
Iser et al., “Bandwidth Extension of Telephony Speech” Eurasip Newsletter, vol. 16, Nr. 2, Jun. 2-24, 2005, pp. 2-24.
Kornagel, Spectral widening of the Excitation Signal of Telephone-Band Speech Enhancement. Proceedings of the IWAENC, 2001, pp. 215-218.
“Introduction of DSP”, Bores Signal Processing, http:www.bores.com/courses/intro/times/2—concor.htm, Apr. 23, 1998 update, pp. 1-3.
Vary, “Advanced Signal Processing in Speech Communication,” in Proceedings of European Signal Processing Conference (EUSIPCO), Vienna, Austria, Sep. 2004, pp. 1449-1456.
Kornagel, “Improved Artificial Low-Pass Extension of Telephone Speech,” International Workshop on Acoustic Echo and Noise Control (IWAENC2003), Sep. 2003, pp. 107-110.
McClellan et al. “Signal Processing First,” Prentice Hall, Lab 07, pp. 1-12.
“Convention Paper” by Audio Engineering Society, Presented at the 115thConvention, Oct. 10-13, 2003, New York, NY, USA (16 pages).
“Neural Networks Versus Codebooks in an Application for Bandwidth Extension of Speech Signals” by Bernd Iser, Gerhard Schmidt, Temic Speech Dialog Systems, Soeflinger Str. 100, 89077 Ulm, Germany; Proceedings of Eurospeech 2003 (4 pages).

Affiliated with

Also associated with

Rating

High-frequency bandwidth extension in the time domain does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High-frequency bandwidth extension in the time domain, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-frequency bandwidth extension in the time domain will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2696396