IN2015MN01874A - - Google Patents
Info
- Publication number
- IN2015MN01874A IN2015MN01874A IN1874MUN2015A IN2015MN01874A IN 2015MN01874 A IN2015MN01874 A IN 2015MN01874A IN 1874MUN2015 A IN1874MUN2015 A IN 1874MUN2015A IN 2015MN01874 A IN2015MN01874 A IN 2015MN01874A
- Authority
- IN
- India
- Prior art keywords
- signal
- subband
- sample
- determining
- audio
- Prior art date
Links
- 230000005236 sound signal Effects 0.000 abstract 3
- 238000000034 method Methods 0.000 abstract 2
Classifications
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- 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
- G10L19/0204—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 using subband decomposition
- G10L19/0208—Subband vocoders
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- 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
- G10L19/0204—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 using subband decomposition
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/32—Circuit design at the digital level
- G06F30/327—Logic synthesis; Behaviour synthesis, e.g. mapping logic, HDL to netlist, high-level language to RTL or netlist
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- 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
- G10L19/005—Correction of errors induced by the transmission channel, if related to the coding algorithm
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- 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
- G10L19/0212—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 using orthogonal transformation
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- 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
- G10L19/032—Quantisation or dequantisation of spectral components
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- 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
- G10L19/04—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
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- 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
- G10L19/04—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
- G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
- G10L19/093—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters using sinusoidal excitation models
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- 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
- G10L19/04—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
- G10L19/16—Vocoder architecture
- G10L19/18—Vocoders using multiple modes
- G10L19/24—Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered encoding
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- 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
- G10L19/04—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
- G10L19/26—Pre-filtering or post-filtering
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- 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
- G10L19/04—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
- G10L19/26—Pre-filtering or post-filtering
- G10L19/265—Pre-filtering, e.g. high frequency emphasis prior to encoding
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2111/00—Details relating to CAD techniques
- G06F2111/08—Probabilistic or stochastic CAD
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- 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
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- 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
- G10L21/0388—Details of processing therefor
Abstract
The present document relates to audio source coding systems. In particular the present document relates to audio source coding systems which make use of linear prediction in combination with a filterbank. A method for estimating a first sample (615) of a first subband signal in a first subband of an audio signal is described. The first subband signal of the audio signal is determined using an analysis filterbank (612) comprising a plurality of analysis filters which provide a plurality of subband signals in a plurality of subbands from the audio signal respectively. The method comprises determining a model parameter (613) of a signal model;determining a prediction coefficient to be applied to a previous sample (614) of a first decoded subband signals derived from the first subband signal based on the signal model based on the model parameter (613) and based on the analysis filterbank (612); wherein a time slot of the previous sample (614) is prior to a time slot of the first sample (615); and determining an estimate of the first sample (615) by applying the prediction coefficient to the previous sample (614).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US201361750052P | 2013-01-08 | 2013-01-08 | |
US201361875528P | 2013-09-09 | 2013-09-09 | |
PCT/EP2014/050139 WO2014108393A1 (en) | 2013-01-08 | 2014-01-07 | Model based prediction in a critically sampled filterbank |
Publications (1)
Publication Number | Publication Date |
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IN2015MN01874A true IN2015MN01874A (en) | 2015-08-28 |
Family
ID=50000954
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IN1874MUN2015 IN2015MN01874A (en) | 2013-01-08 | 2014-01-07 |
Country Status (20)
Country | Link |
---|---|
US (8) | US9659567B2 (en) |
EP (4) | EP3648104B1 (en) |
JP (7) | JP6173484B2 (en) |
KR (1) | KR101634979B1 (en) |
CN (2) | CN107452392B (en) |
AU (6) | AU2014204954B2 (en) |
BR (1) | BR112015016275B1 (en) |
CA (8) | CA3012134C (en) |
DK (1) | DK2943953T3 (en) |
ES (3) | ES2880252T3 (en) |
HK (1) | HK1213081A1 (en) |
HU (1) | HUE032831T2 (en) |
IL (10) | IL309437A (en) |
IN (1) | IN2015MN01874A (en) |
MX (5) | MX342822B (en) |
MY (2) | MY193865A (en) |
PL (1) | PL2943953T3 (en) |
RU (2) | RU2742460C2 (en) |
SG (2) | SG11201504705SA (en) |
WO (1) | WO2014108393A1 (en) |
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SG11201507703SA (en) | 2013-04-05 | 2015-10-29 | Dolby Int Ab | Audio encoder and decoder |
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2014
- 2014-01-07 MY MYPI2018002422A patent/MY193865A/en unknown
- 2014-01-07 RU RU2017134071A patent/RU2742460C2/en active
- 2014-01-07 MY MYPI2015702155A patent/MY173781A/en unknown
- 2014-01-07 ES ES19208681T patent/ES2880252T3/en active Active
- 2014-01-07 IL IL309437A patent/IL309437A/en unknown
- 2014-01-07 EP EP19208681.7A patent/EP3648104B1/en active Active
- 2014-01-07 KR KR1020157018150A patent/KR101634979B1/en active IP Right Grant
- 2014-01-07 HU HUE14701146A patent/HUE032831T2/en unknown
- 2014-01-07 SG SG11201504705SA patent/SG11201504705SA/en unknown
- 2014-01-07 IL IL302061A patent/IL302061B1/en unknown
- 2014-01-07 CA CA3012134A patent/CA3012134C/en active Active
- 2014-01-07 CA CA3140749A patent/CA3140749A1/en active Pending
- 2014-01-07 EP EP21171483.7A patent/EP3893240B1/en active Active
- 2014-01-07 AU AU2014204954A patent/AU2014204954B2/en active Active
- 2014-01-07 WO PCT/EP2014/050139 patent/WO2014108393A1/en active Application Filing
- 2014-01-07 EP EP14701146.4A patent/EP2943953B1/en active Active
- 2014-01-07 MX MX2015008659A patent/MX342822B/en active IP Right Grant
- 2014-01-07 PL PL14701146T patent/PL2943953T3/en unknown
- 2014-01-07 MX MX2019002421A patent/MX370086B/en unknown
- 2014-01-07 CA CA3054712A patent/CA3054712C/en active Active
- 2014-01-07 CA CA3234476A patent/CA3234476A1/en active Pending
- 2014-01-07 US US14/655,037 patent/US9659567B2/en active Active
- 2014-01-07 ES ES14701146.4T patent/ES2613747T3/en active Active
- 2014-01-07 ES ES16192075T patent/ES2769845T3/en active Active
- 2014-01-07 CA CA3092138A patent/CA3092138C/en active Active
- 2014-01-07 CN CN201710814654.1A patent/CN107452392B/en active Active
- 2014-01-07 BR BR112015016275-4A patent/BR112015016275B1/en active IP Right Grant
- 2014-01-07 IN IN1874MUN2015 patent/IN2015MN01874A/en unknown
- 2014-01-07 EP EP16192075.6A patent/EP3176784B1/en active Active
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