WO1998057436A3 - Source coding enhancement using spectral-band replication - Google Patents
Source coding enhancement using spectral-band replication Download PDFInfo
- Publication number
- WO1998057436A3 WO1998057436A3 PCT/IB1998/000893 IB9800893W WO9857436A3 WO 1998057436 A3 WO1998057436 A3 WO 1998057436A3 IB 9800893 W IB9800893 W IB 9800893W WO 9857436 A3 WO9857436 A3 WO 9857436A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- spectral
- codec
- source coding
- band replication
- combination
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/66—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission
- H04B1/667—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission using a division in frequency subbands
Abstract
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50196299A JP3871347B2 (en) | 1997-06-10 | 1998-06-09 | Enhancing Primitive Coding Using Spectral Band Replication |
AT98921697T ATE257987T1 (en) | 1997-06-10 | 1998-06-09 | IMPROVEMENT OF SOURCE ENCODING USING SPECTRAL BAND REPLICATION |
BRPI9805989-0A BR9805989B1 (en) | 1997-06-10 | 1998-06-09 | method and apparatus for decoding a coded signal. |
AU74465/98A AU7446598A (en) | 1997-06-10 | 1998-06-09 | Source coding enhancement using spectral-band replication |
EP98921697A EP0940015B1 (en) | 1997-06-10 | 1998-06-09 | Source coding enhancement using spectral-band replication |
DE69821089T DE69821089T2 (en) | 1997-06-10 | 1998-06-09 | IMPROVE SOURCE ENCODING USING SPECTRAL BAND REPLICATION |
US09/230,799 US6680972B1 (en) | 1997-06-10 | 1998-06-09 | Source coding enhancement using spectral-band replication |
HK01101733A HK1030843A1 (en) | 1997-06-10 | 2001-03-12 | Source coding enhancement using spectral-band replication. |
US10/680,224 US6925116B2 (en) | 1997-06-10 | 2003-10-08 | Source coding enhancement using spectral-band replication |
US10/681,105 US7328162B2 (en) | 1997-06-10 | 2003-10-09 | Source coding enhancement using spectral-band replication |
US10/682,030 US7283955B2 (en) | 1997-06-10 | 2003-10-10 | Source coding enhancement using spectral-band replication |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9702213A SE9702213D0 (en) | 1997-06-10 | 1997-06-10 | A method and a device for bit-rate reduction using synthetic bandwidth expansion |
SE9702213-1 | 1997-06-10 | ||
SE9704634A SE9704634D0 (en) | 1997-12-12 | 1997-12-12 | Synthetic bandwidth expansion of audio signals |
SE9704634-6 | 1997-12-12 | ||
SE9800268A SE512719C2 (en) | 1997-06-10 | 1998-01-30 | A method and apparatus for reducing data flow based on harmonic bandwidth expansion |
SE9800268-6 | 1998-01-30 |
Related Child Applications (5)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/230,799 A-371-Of-International US6680972B1 (en) | 1997-06-10 | 1998-06-09 | Source coding enhancement using spectral-band replication |
US09230799 A-371-Of-International | 1998-06-09 | ||
US10/680,224 Division US6925116B2 (en) | 1997-06-10 | 2003-10-08 | Source coding enhancement using spectral-band replication |
US10/681,105 Division US7328162B2 (en) | 1997-06-10 | 2003-10-09 | Source coding enhancement using spectral-band replication |
US10/682,030 Division US7283955B2 (en) | 1997-06-10 | 2003-10-10 | Source coding enhancement using spectral-band replication |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1998057436A2 WO1998057436A2 (en) | 1998-12-17 |
WO1998057436A3 true WO1998057436A3 (en) | 2000-02-10 |
Family
ID=27355877
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB1998/000893 WO1998057436A2 (en) | 1997-06-10 | 1998-06-09 | Source coding enhancement using spectral-band replication |
Country Status (14)
Country | Link |
---|---|
US (4) | US6680972B1 (en) |
EP (2) | EP1367566B1 (en) |
JP (2) | JP3871347B2 (en) |
CN (2) | CN1206816C (en) |
AT (2) | ATE303679T1 (en) |
AU (1) | AU7446598A (en) |
BR (1) | BR9805989B1 (en) |
DE (2) | DE69821089T2 (en) |
DK (2) | DK0940015T3 (en) |
ES (2) | ES2247466T3 (en) |
HK (2) | HK1030843A1 (en) |
PT (2) | PT940015E (en) |
SE (1) | SE512719C2 (en) |
WO (1) | WO1998057436A2 (en) |
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US9218818B2 (en) | 2001-07-10 | 2015-12-22 | Dolby International Ab | Efficient and scalable parametric stereo coding for low bitrate audio coding applications |
US9431020B2 (en) | 2001-11-29 | 2016-08-30 | Dolby International Ab | Methods for improving high frequency reconstruction |
CN101505144B (en) * | 2002-09-18 | 2012-05-16 | 瑞典商编码技术股份公司 | Method for reduction of aliasing introduced by spectral envelope adjustment in real-valued filterbanks |
US9542950B2 (en) | 2002-09-18 | 2017-01-10 | Dolby International Ab | Method for reduction of aliasing introduced by spectral envelope adjustment in real-valued filterbanks |
KR100917464B1 (en) * | 2003-03-07 | 2009-09-14 | 삼성전자주식회사 | Method and apparatus for encoding/decoding digital data using bandwidth extension technology |
KR100923300B1 (en) * | 2003-03-22 | 2009-10-23 | 삼성전자주식회사 | Method and apparatus for encoding/decoding audio data using bandwidth extension technology |
KR100923301B1 (en) * | 2003-03-22 | 2009-10-23 | 삼성전자주식회사 | Method and apparatus for encoding/decoding audio data using bandwidth extension technology |
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