Data processing: speech signal processing – linguistics – language – Speech signal processing – For storage or transmission
Reexamination Certificate
2006-06-27
2006-06-27
Storm, Donald L. (Department: 2654)
Data processing: speech signal processing, linguistics, language
Speech signal processing
For storage or transmission
C704S205000, C704S228000, C704S268000, C704S501000
Reexamination Certificate
active
07069212
ABSTRACT:
An audio decoding apparatus decodes high frequency component signals using a band expander that generates multiple high frequency subband signals from low frequency subband signals divided into multiple subbands and transmitted high frequency encoded information. The apparatus is provided with an aliasing detector and an aliasing remover. The aliasing detector detects the degree of occurrence of aliasing components in the multiple high frequency subband signals generated by the band expander. The aliasing remover suppresses aliasing components in the high frequency subband signals by adjusting the gain used to generate the high frequency subband signals. Thus occurrence of aliasing can be suppressed and the resulting degradation in sound quality can be reduced, even when real-valued subband signals are used in order to reduce the number of operations.
REFERENCES:
patent: 4691292 (1987-09-01), Rothweiler
patent: 4766562 (1988-08-01), Vary
patent: 5301255 (1994-04-01), Nagai et al.
patent: 5327366 (1994-07-01), Mau
patent: 5508949 (1996-04-01), Konstantinides
patent: 5654952 (1997-08-01), Suzuki et al.
patent: 5978759 (1999-11-01), Tsushima et al.
patent: 6539355 (2003-03-01), Omori et al.
patent: 6680972 (2004-01-01), Liljeryd et al.
patent: 6681209 (2004-01-01), Schmidt et al.
patent: 6718300 (2004-04-01), Schuller
patent: 6895375 (2005-05-01), Malah et al.
patent: 2004/0078194 (2004-04-01), Liljeryd et al.
patent: 2004/0078205 (2004-04-01), Liljeryd et al.
patent: 2004/0125878 (2004-07-01), Liljeryd et al.
patent: 0 488 504 (1992-06-01), None
patent: 0 661 827 (1995-07-01), None
patent: 0 957 579 (1999-11-01), None
patent: 0 957 580 (1999-11-01), None
patent: 1 160 977 (2001-12-01), None
patent: 1 367 566 (2003-12-01), None
patent: 7-210196 (1995-08-01), None
patent: 8-162964 (1996-06-01), None
patent: 9-101798 (1997-04-01), None
patent: 11-109994 (1999-04-01), None
patent: 2000-68948 (2000-03-01), None
patent: 2001-521648 (2001-11-01), None
patent: 2002-55698 (2002-02-01), None
patent: 98/57436 (1998-12-01), None
patent: 00/45379 (2000-08-01), None
patent: 02/41301 (2002-05-01), None
Y. Nakatoh et al.: “Generation of Broadband Speech from Narrowband Speech Using Piecewise Linear Mapping”, 5thEuropean Conference on Speech Communication and Technology. Eurospeech '97. Rhodes, Greece, Sep. 22-25, 1997, European Conference on Speech Communication and Technology. (Eurospeech), Grenoble: ESCA, FR, vol. 3 of 5, Sep. 22, 1997, pp. 1643-1646, XP001045142, abstract; figures 1,2, paragraph '0002.
Chong Kok Seng
Kuah Kim Hann
Neo Sua Hong
Nomura Toshiyuki
Norimatsu Takeshi
Matsushita Elecric Industrial Co., Ltd.
NEC Corporation
Storm Donald L.
Wenderoth , Lind & Ponack, L.L.P.
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