IN2015MN01954A - - Google Patents
Info
- Publication number
- IN2015MN01954A IN2015MN01954A IN1954MUN2015A IN2015MN01954A IN 2015MN01954 A IN2015MN01954 A IN 2015MN01954A IN 1954MUN2015 A IN1954MUN2015 A IN 1954MUN2015A IN 2015MN01954 A IN2015MN01954 A IN 2015MN01954A
- Authority
- IN
- India
- Prior art keywords
- audio data
- decorrelation
- involve
- audio
- decorrelation process
- Prior art date
Links
- 238000000034 method Methods 0.000 abstract 5
- 230000003044 adaptive effect Effects 0.000 abstract 1
- 238000003672 processing method Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; 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
- G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; 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
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; 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
- G10L19/04—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 predictive techniques
- G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
- G10L25/06—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being correlation coefficients
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
- H04S3/008—Systems employing more than two channels, e.g. quadraphonic in which the audio signals are in digital form, i.e. employing more than two discrete digital channels
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S5/00—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computational Linguistics (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Mathematical Physics (AREA)
- Stereophonic System (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Telephonic Communication Services (AREA)
Abstract
Audio processing methods may involve receiving audio data corresponding to a plurality of audio channels. The audio data may include a frequency domain representation corresponding to filterbank coefficients of an audio encoding or processing system. A decorrelation process may be performed with the same filterbank coefficients used by the audio encoding or processing system. The decorrelation process may be performed without converting coefficients of the frequency domain representation to another frequency domain or time domain representation. The decorrelation process may involve selective or signal adaptive decorrelation of specific channels and/or specific frequency bands. The decorrelation process may involve applying a decorrelation filter to a portion of the received audio data to produce filtered audio data. The decorrelation process may involve using a non hierarchal mixer to combine a direct portion of the received audio data with the filtered audio data according to spatial parameters.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201361764837P | 2013-02-14 | 2013-02-14 | |
PCT/US2014/012453 WO2014126682A1 (en) | 2013-02-14 | 2014-01-22 | Signal decorrelation in an audio processing system |
Publications (1)
Publication Number | Publication Date |
---|---|
IN2015MN01954A true IN2015MN01954A (en) | 2015-08-28 |
Family
ID=50064800
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IN1954MUN2015 IN2015MN01954A (en) | 2013-02-14 | 2014-01-22 |
Country Status (12)
Country | Link |
---|---|
US (1) | US9830916B2 (en) |
EP (1) | EP2956933B1 (en) |
JP (1) | JP6038355B2 (en) |
KR (1) | KR102114648B1 (en) |
CN (1) | CN104995676B (en) |
BR (1) | BR112015018981B1 (en) |
ES (1) | ES2613478T3 (en) |
HK (1) | HK1213686A1 (en) |
IN (1) | IN2015MN01954A (en) |
RU (1) | RU2614381C2 (en) |
TW (1) | TWI618050B (en) |
WO (1) | WO2014126682A1 (en) |
Families Citing this family (19)
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TWI618050B (en) | 2013-02-14 | 2018-03-11 | 杜比實驗室特許公司 | Method and apparatus for signal decorrelation in an audio processing system |
EP2956935B1 (en) * | 2013-02-14 | 2017-01-04 | Dolby Laboratories Licensing Corporation | Controlling the inter-channel coherence of upmixed audio signals |
WO2014126688A1 (en) | 2013-02-14 | 2014-08-21 | Dolby Laboratories Licensing Corporation | Methods for audio signal transient detection and decorrelation control |
KR102330732B1 (en) * | 2014-04-02 | 2021-11-23 | 케이엘에이 코포레이션 | A method, system and computer program product for generating high density registration maps for masks |
EP3067886A1 (en) | 2015-03-09 | 2016-09-14 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Audio encoder for encoding a multichannel signal and audio decoder for decoding an encoded audio signal |
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CN109557509B (en) * | 2018-11-23 | 2020-08-11 | 安徽四创电子股份有限公司 | Double-pulse signal synthesizer for improving inter-pulse interference |
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CN110267064B (en) * | 2019-06-12 | 2021-11-12 | 百度在线网络技术(北京)有限公司 | Audio playing state processing method, device, equipment and storage medium |
CN110740404B (en) * | 2019-09-27 | 2020-12-25 | 广州励丰文化科技股份有限公司 | Audio correlation processing method and audio processing device |
CN110740416B (en) * | 2019-09-27 | 2021-04-06 | 广州励丰文化科技股份有限公司 | Audio signal processing method and device |
CN114365509B (en) * | 2021-12-03 | 2024-03-01 | 北京小米移动软件有限公司 | Stereo audio signal processing method and equipment/storage medium/device |
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-
2014
- 2014-01-15 TW TW103101428A patent/TWI618050B/en active
- 2014-01-22 BR BR112015018981-4A patent/BR112015018981B1/en active IP Right Grant
- 2014-01-22 ES ES14703015.9T patent/ES2613478T3/en active Active
- 2014-01-22 JP JP2015556956A patent/JP6038355B2/en active Active
- 2014-01-22 EP EP14703015.9A patent/EP2956933B1/en active Active
- 2014-01-22 IN IN1954MUN2015 patent/IN2015MN01954A/en unknown
- 2014-01-22 RU RU2015133287A patent/RU2614381C2/en active
- 2014-01-22 CN CN201480008604.9A patent/CN104995676B/en active Active
- 2014-01-22 KR KR1020157021921A patent/KR102114648B1/en active IP Right Grant
- 2014-01-22 US US14/766,371 patent/US9830916B2/en active Active
- 2014-01-22 WO PCT/US2014/012453 patent/WO2014126682A1/en active Application Filing
-
2016
- 2016-02-05 HK HK16101417.5A patent/HK1213686A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
CN104995676B (en) | 2018-03-30 |
RU2614381C2 (en) | 2017-03-24 |
KR102114648B1 (en) | 2020-05-26 |
US20150380000A1 (en) | 2015-12-31 |
CN104995676A (en) | 2015-10-21 |
WO2014126682A1 (en) | 2014-08-21 |
BR112015018981B1 (en) | 2022-02-01 |
TW201443877A (en) | 2014-11-16 |
US9830916B2 (en) | 2017-11-28 |
ES2613478T3 (en) | 2017-05-24 |
EP2956933B1 (en) | 2016-11-16 |
JP6038355B2 (en) | 2016-12-07 |
JP2016510433A (en) | 2016-04-07 |
TWI618050B (en) | 2018-03-11 |
RU2015133287A (en) | 2017-02-21 |
BR112015018981A2 (en) | 2017-07-18 |
HK1213686A1 (en) | 2016-07-08 |
EP2956933A1 (en) | 2015-12-23 |
KR20150106949A (en) | 2015-09-22 |
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