SE0301272D0 - Adaptive voice enhancement for low bit rate audio coding - Google Patents
Adaptive voice enhancement for low bit rate audio codingInfo
- Publication number
- SE0301272D0 SE0301272D0 SE0301272A SE0301272A SE0301272D0 SE 0301272 D0 SE0301272 D0 SE 0301272D0 SE 0301272 A SE0301272 A SE 0301272A SE 0301272 A SE0301272 A SE 0301272A SE 0301272 D0 SE0301272 D0 SE 0301272D0
- Authority
- SE
- Sweden
- Prior art keywords
- signal
- bit rate
- processing
- audio coding
- low bit
- Prior art date
Links
Abstract
The present invention provides improvements to prior art audio codecs applied to voice signals like human speech. These improvements are accomplished by adaptively processing (501) the signal in the decoder to reduce perceived distortion introduced by the coding process, primarily for voiced parts of the audio signal. The signal processing is adaptively controlled by signal analysis in the encoder or in the decoder. The invention can be applied as post-processing in a general audio codec or can be applied as intermediate processing step in a general audio codec that utilizes high frequency reconstruction (HFR) techniques.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0301272A SE0301272D0 (en) | 2003-04-30 | 2003-04-30 | Adaptive voice enhancement for low bit rate audio coding |
PCT/EP2004/004608 WO2004097795A2 (en) | 2003-04-30 | 2004-04-30 | Adaptive voice enhancement for low bit rate audio coding |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0301272A SE0301272D0 (en) | 2003-04-30 | 2003-04-30 | Adaptive voice enhancement for low bit rate audio coding |
Publications (1)
Publication Number | Publication Date |
---|---|
SE0301272D0 true SE0301272D0 (en) | 2003-04-30 |
Family
ID=20291179
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE0301272A SE0301272D0 (en) | 2003-04-30 | 2003-04-30 | Adaptive voice enhancement for low bit rate audio coding |
Country Status (2)
Country | Link |
---|---|
SE (1) | SE0301272D0 (en) |
WO (1) | WO2004097795A2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TR201910073T4 (en) | 2009-01-16 | 2019-07-22 | Dolby Int Ab | Harmonic transfer with improved cross product. |
EP2492911B1 (en) * | 2009-10-21 | 2017-08-16 | Panasonic Intellectual Property Management Co., Ltd. | Audio encoding apparatus, decoding apparatus, method, circuit and program |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3653826B2 (en) * | 1995-10-26 | 2005-06-02 | ソニー株式会社 | Speech decoding method and apparatus |
DE10124421C1 (en) * | 2001-05-18 | 2002-10-17 | Siemens Ag | Codec parameter estimation method uses iteration process employing earlier and later codec parameter values |
US7177803B2 (en) * | 2001-10-22 | 2007-02-13 | Motorola, Inc. | Method and apparatus for enhancing loudness of an audio signal |
-
2003
- 2003-04-30 SE SE0301272A patent/SE0301272D0/en unknown
-
2004
- 2004-04-30 WO PCT/EP2004/004608 patent/WO2004097795A2/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2004097795A2 (en) | 2004-11-11 |
WO2004097795A3 (en) | 2005-01-13 |
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