BR112015013088A2 - processo de codificação, processo de decodificação, dispositivo de codificação e dispositivo de decodificação - Google Patents
processo de codificação, processo de decodificação, dispositivo de codificação e dispositivo de decodificaçãoInfo
- Publication number
- BR112015013088A2 BR112015013088A2 BR112015013088A BR112015013088A BR112015013088A2 BR 112015013088 A2 BR112015013088 A2 BR 112015013088A2 BR 112015013088 A BR112015013088 A BR 112015013088A BR 112015013088 A BR112015013088 A BR 112015013088A BR 112015013088 A2 BR112015013088 A2 BR 112015013088A2
- Authority
- BR
- Brazil
- Prior art keywords
- high frequency
- encoding
- frequency band
- band signals
- decoding
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 7
- 230000003595 spectral effect Effects 0.000 abstract 3
- 239000000706 filtrate Substances 0.000 abstract 2
- 230000000694 effects Effects 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
Classifications
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- 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
- G10L19/03—Spectral prediction for preventing pre-echo; Temporary noise shaping [TNS], e.g. in MPEG2 or MPEG4
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- 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
- G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
- G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] vocoders
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- 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
- G10L19/16—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 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
- G10L19/26—Pre-filtering or post-filtering
-
- 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
- G10L19/26—Pre-filtering or post-filtering
- G10L19/265—Pre-filtering, e.g. high frequency emphasis prior to encoding
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- 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
- G10L21/00—Speech or voice signal processing techniques 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
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- 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
- 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
-
- 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
- G10L2019/0001—Codebooks
- G10L2019/0016—Codebook for LPC parameters
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computational Linguistics (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Quality & Reliability (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
resumo patente de invenção: "processo de codificação, processo de decodificação, dispositivo de codificação e dispositivo de decodificação". a presente invenção refere-se a um processo de codificação, um processo de decodificação, um dispositivo de codificação, um dispositivo de decodificação, um aparelho de codificação, um aparelho de decodificação, um transmissor, um receptor e um sistema de comunicações. o processo de codificação compreende: dividir sinais de domínio de tempo a serem codificados em sinais de banda de frequência baixa e sinais de banda de frequência alta; codificar os sinais de banda de frequência baixa para obter um parâmetro de codificação de baixa frequência; codificar os sinais de banda de frequência alta para obter um parâmetro de codificação de alta frequência e obter sinais de banda de frequência alta sintetizado, de acordo com o parâmetro de codificação de baixa frequência e o parâmetro de codificação de alta frequência; executar processamento de pós-filtração em tempo curto nos sinais de banda de frequência alta sintetizados, para obter sinais filtrados de tempo curto, em que a forma do envelope espectral dos sinais de filtrados de tempo curto é mais próxima de uma forma do envelope espectral dos sinais de banda de frequência alta do que da forma do envelope espectral dos sinais de banda de frequência alta; e calcular ganhos de alta frequência com base nos sinais de banda de frequência alta e nos sinais de filtrados de tempo curto. a solução técnica, de acordo com cada uma das concretizações da presente invenção, pode aperfeiçoar o efeito de codificação e/ou de decodificação. 1/1
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310014342.4A CN103928031B (zh) | 2013-01-15 | 2013-01-15 | 编码方法、解码方法、编码装置和解码装置 |
| PCT/CN2013/080061 WO2014110895A1 (zh) | 2013-01-15 | 2013-07-25 | 编码方法、解码方法、编码装置和解码装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| BR112015013088A2 true BR112015013088A2 (pt) | 2017-07-11 |
| BR112015013088B1 BR112015013088B1 (pt) | 2020-01-28 |
Family
ID=51146229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR112015013088A BR112015013088B1 (pt) | 2013-01-15 | 2013-07-25 | método e aparelho de codificação e método e aparelho de decodificação |
Country Status (17)
| Country | Link |
|---|---|
| US (6) | US9761235B2 (pt) |
| EP (4) | EP3486905B1 (pt) |
| JP (3) | JP6141443B2 (pt) |
| KR (2) | KR101748303B1 (pt) |
| CN (2) | CN105551497B (pt) |
| BR (1) | BR112015013088B1 (pt) |
| DK (3) | DK2905777T3 (pt) |
| ES (3) | ES2637741T3 (pt) |
| HK (1) | HK1199541A1 (pt) |
| HU (3) | HUE036710T2 (pt) |
| NO (1) | NO2905777T3 (pt) |
| PL (3) | PL2905777T3 (pt) |
| PT (3) | PT2905777T (pt) |
| SG (1) | SG11201503772RA (pt) |
| SI (3) | SI3203470T1 (pt) |
| TR (1) | TR201907656T4 (pt) |
| WO (1) | WO2014110895A1 (pt) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104517610B (zh) * | 2013-09-26 | 2018-03-06 | 华为技术有限公司 | 频带扩展的方法及装置 |
| CN105225671B (zh) * | 2014-06-26 | 2016-10-26 | 华为技术有限公司 | 编解码方法、装置及系统 |
| US10475457B2 (en) * | 2017-07-03 | 2019-11-12 | Qualcomm Incorporated | Time-domain inter-channel prediction |
| JP7362320B2 (ja) * | 2019-07-04 | 2023-10-17 | フォルシアクラリオン・エレクトロニクス株式会社 | オーディオ信号処理装置、オーディオ信号処理方法及びオーディオ信号処理プログラム |
| US10978083B1 (en) * | 2019-11-13 | 2021-04-13 | Shure Acquisition Holdings, Inc. | Time domain spectral bandwidth replication |
| CN113079378B (zh) * | 2021-04-15 | 2022-08-16 | 杭州海康威视数字技术股份有限公司 | 图像处理方法、装置和电子设备 |
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| US5307441A (en) | 1989-11-29 | 1994-04-26 | Comsat Corporation | Wear-toll quality 4.8 kbps speech codec |
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2013
- 2013-01-15 CN CN201610112075.8A patent/CN105551497B/zh active Active
- 2013-01-15 CN CN201310014342.4A patent/CN103928031B/zh active Active
- 2013-07-25 PT PT138721238T patent/PT2905777T/pt unknown
- 2013-07-25 EP EP18182328.7A patent/EP3486905B1/en active Active
- 2013-07-25 SI SI201331452T patent/SI3203470T1/sl unknown
- 2013-07-25 DK DK13872123.8T patent/DK2905777T3/da active
- 2013-07-25 NO NO13872123A patent/NO2905777T3/no unknown
- 2013-07-25 PL PL13872123T patent/PL2905777T3/pl unknown
- 2013-07-25 HU HUE13872123A patent/HUE036710T2/hu unknown
- 2013-07-25 ES ES13872123.8T patent/ES2637741T3/es active Active
- 2013-07-25 ES ES18182328T patent/ES2828004T3/es active Active
- 2013-07-25 PL PL18182328T patent/PL3486905T3/pl unknown
- 2013-07-25 EP EP13872123.8A patent/EP2905777B1/en active Active
- 2013-07-25 KR KR1020167019767A patent/KR101748303B1/ko active IP Right Grant
- 2013-07-25 PT PT16193849T patent/PT3203470T/pt unknown
- 2013-07-25 HU HUE18182328A patent/HUE051171T2/hu unknown
- 2013-07-25 PT PT181823287T patent/PT3486905T/pt unknown
- 2013-07-25 EP EP20173785.5A patent/EP3764355B1/en active Active
- 2013-07-25 SI SI201330810T patent/SI2905777T1/sl unknown
- 2013-07-25 SG SG11201503772RA patent/SG11201503772RA/en unknown
- 2013-07-25 EP EP16193849.3A patent/EP3203470B1/en active Active
- 2013-07-25 JP JP2015546810A patent/JP6141443B2/ja active Active
- 2013-07-25 WO PCT/CN2013/080061 patent/WO2014110895A1/zh active Application Filing
- 2013-07-25 BR BR112015013088A patent/BR112015013088B1/pt active IP Right Grant
- 2013-07-25 PL PL16193849T patent/PL3203470T3/pl unknown
- 2013-07-25 KR KR1020157014971A patent/KR101966265B1/ko active IP Right Grant
- 2013-07-25 HU HUE16193849A patent/HUE043649T2/hu unknown
- 2013-07-25 DK DK16193849.3T patent/DK3203470T3/da active
- 2013-07-25 ES ES16193849T patent/ES2728000T3/es active Active
- 2013-07-25 SI SI201331808T patent/SI3486905T1/sl unknown
- 2013-07-25 TR TR2019/07656T patent/TR201907656T4/tr unknown
- 2013-07-25 DK DK18182328.7T patent/DK3486905T3/da active
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2014
- 2014-12-30 HK HK14113072.8A patent/HK1199541A1/zh unknown
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2015
- 2015-05-26 US US14/721,606 patent/US9761235B2/en active Active
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2017
- 2017-05-01 JP JP2017091250A patent/JP6397082B2/ja active Active
- 2017-08-15 US US15/677,324 patent/US10210880B2/en active Active
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2018
- 2018-08-30 JP JP2018161132A patent/JP6616470B2/ja active Active
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2019
- 2019-01-03 US US16/238,797 patent/US10770085B2/en active Active
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2020
- 2020-08-21 US US16/999,448 patent/US11430456B2/en active Active
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2022
- 2022-07-20 US US17/868,879 patent/US11869520B2/en active Active
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2023
- 2023-11-30 US US18/524,654 patent/US20240177722A1/en active Pending
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