WO2009038115A1 - Audio encoding device, audio encoding method, and program - Google Patents
Audio encoding device, audio encoding method, and program Download PDFInfo
- Publication number
- WO2009038115A1 WO2009038115A1 PCT/JP2008/066828 JP2008066828W WO2009038115A1 WO 2009038115 A1 WO2009038115 A1 WO 2009038115A1 JP 2008066828 W JP2008066828 W JP 2008066828W WO 2009038115 A1 WO2009038115 A1 WO 2009038115A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- audio encoding
- audio
- signal
- auditory masking
- program
- Prior art date
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Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
Abstract
It is possible to reduce degradation of audio quality when distributing a music component or a melody to a mobile terminal by a highly efficient audio encoding method. An audio encoding device includes: an auditory masking shaping unit (120) which suppresses a signal component which becomes auditorily unnecessary by the auditory masking effect among signal components of an output signal when outputting the signal; and an audio encoding unit (130) which executes an audio encoding process for audio-compressing/encoding the output signal of the auditory masking shaping unit so as to output a bit stream.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009533171A JPWO2009038115A1 (en) | 2007-09-21 | 2008-09-18 | Speech coding apparatus, speech coding method, and program |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007-245547 | 2007-09-21 | ||
JP2007245547 | 2007-09-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009038115A1 true WO2009038115A1 (en) | 2009-03-26 |
Family
ID=40467925
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2008/066828 WO2009038115A1 (en) | 2007-09-21 | 2008-09-18 | Audio encoding device, audio encoding method, and program |
Country Status (2)
Country | Link |
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JP (1) | JPWO2009038115A1 (en) |
WO (1) | WO2009038115A1 (en) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06332496A (en) * | 1993-05-21 | 1994-12-02 | Mitsubishi Electric Corp | Device and method for voice coding, decoding and post processing |
JPH07221650A (en) * | 1994-02-05 | 1995-08-18 | Sony Corp | Method and device for encoding information and method and device for decoding information |
WO1996005592A1 (en) * | 1994-08-10 | 1996-02-22 | Qualcomm Incorporated | Method and apparatus for selecting an encoding rate in a variable rate vocoder |
JPH0950298A (en) * | 1995-08-07 | 1997-02-18 | Mitsubishi Electric Corp | Voice coding device and voice decoding device |
JP2000315099A (en) * | 1999-03-02 | 2000-11-14 | Emudasu Systems:Kk | Data compressing device and sound data processing method |
WO2004090869A1 (en) * | 2003-04-08 | 2004-10-21 | Nec Corporation | Code conversion method and device |
WO2005112003A1 (en) * | 2004-05-17 | 2005-11-24 | Nokia Corporation | Audio encoding with different coding frame lengths |
-
2008
- 2008-09-18 JP JP2009533171A patent/JPWO2009038115A1/en active Pending
- 2008-09-18 WO PCT/JP2008/066828 patent/WO2009038115A1/en active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06332496A (en) * | 1993-05-21 | 1994-12-02 | Mitsubishi Electric Corp | Device and method for voice coding, decoding and post processing |
JPH07221650A (en) * | 1994-02-05 | 1995-08-18 | Sony Corp | Method and device for encoding information and method and device for decoding information |
WO1996005592A1 (en) * | 1994-08-10 | 1996-02-22 | Qualcomm Incorporated | Method and apparatus for selecting an encoding rate in a variable rate vocoder |
JPH0950298A (en) * | 1995-08-07 | 1997-02-18 | Mitsubishi Electric Corp | Voice coding device and voice decoding device |
JP2000315099A (en) * | 1999-03-02 | 2000-11-14 | Emudasu Systems:Kk | Data compressing device and sound data processing method |
WO2004090869A1 (en) * | 2003-04-08 | 2004-10-21 | Nec Corporation | Code conversion method and device |
WO2005112003A1 (en) * | 2004-05-17 | 2005-11-24 | Nokia Corporation | Audio encoding with different coding frame lengths |
Also Published As
Publication number | Publication date |
---|---|
JPWO2009038115A1 (en) | 2011-01-06 |
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