DK3098811T3 - Sløring af rammefejl - Google Patents
Sløring af rammefejl Download PDFInfo
- Publication number
- DK3098811T3 DK3098811T3 DK16179227.0T DK16179227T DK3098811T3 DK 3098811 T3 DK3098811 T3 DK 3098811T3 DK 16179227 T DK16179227 T DK 16179227T DK 3098811 T3 DK3098811 T3 DK 3098811T3
- Authority
- DK
- Denmark
- Prior art keywords
- frames
- frame
- sign
- transient
- coefficients
- Prior art date
Links
- 230000007547 defect Effects 0.000 title 1
- 239000013598 vector Substances 0.000 claims description 43
- 238000000034 method Methods 0.000 claims description 27
- 230000001052 transient effect Effects 0.000 claims description 21
- 238000004590 computer program Methods 0.000 claims description 19
- 230000009466 transformation Effects 0.000 claims 12
- 238000005516 engineering process Methods 0.000 description 34
- 238000010586 diagram Methods 0.000 description 29
- 230000005236 sound signal Effects 0.000 description 19
- 230000008859 change Effects 0.000 description 15
- 230000006870 function Effects 0.000 description 14
- 238000012545 processing Methods 0.000 description 12
- 238000004458 analytical method Methods 0.000 description 10
- 238000004891 communication Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 7
- 238000013459 approach Methods 0.000 description 3
- 238000013213 extrapolation Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000001934 delay Effects 0.000 description 2
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- 239000007924 injection Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
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- 230000001413 cellular effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 235000019800 disodium phosphate Nutrition 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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- 230000008672 reprogramming Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 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
- G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
- G10L19/025—Detection of transients or attacks for time/frequency resolution switching
-
- 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
- G10L19/005—Correction of errors induced by the transmission channel, if related to the coding algorithm
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Signal Processing (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Computational Linguistics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
Claims (11)
1. Fremgangsmåde til sløring af rammetab udført afen audiodekoder, hvilken fremgangsmåde omfatter: at analysere (S11) fortegnsændringer af transformationskoefficienter i modtagne rammer ved bestemmelse af et antal fortegnsændringer mellem tilsvarende transformationskoefficienter i tilsvarende subvektorer af konsekutive i kke-fej I behæftede rammer, der ikke indeholder en transient, hvor hver sub-vektor omfatter flere koefficienter af et frekvensbånd; at akkumulere (S12) antallet af fortegnsændringer i tilsvarende subvektorer over et forudbestemt antal af konsekutive ikke-fejlbehæftede rammer, der ikke indeholder en transient; og at rekonstruere (S13) en tabt ramme ved at kopiere transformationskoefficienterne fra en tidligere ikke-fejlbehæftet ramme, der ikke indeholder en transient, men med omvendte fortegn af transformationskoefficienter i subvektorer med et akkumuleret antal af fortegnsændringer, der overstiger en forudbestemt tærskelværdi.
2. Fremgangsmåde ifølge krav 1, hvor tærskelværdien afhænger af det forudbestemte antal af konsekutive ikke-fejlbehæftede rammer, der ikke indeholder en transient.
3. Fremgangsmåde ifølge krav 2, hvor tærskelværdien tildeles en første værdi for 2 konsekutive ikke-fejlbehæftede rammer, der ikke indeholderen transient, og en anden værdi for 3 konsekutive ikke-fejlbehæftede rammer, der ikke indeholder en transient.
4. Fremgangsmåde ifølge krav 3, hvor, når båndet omfatter 4 koefficienter, den første værdi er 3, og den anden værdi er 6.
5. Fremgangsmåde ifølge krav 1, hvor fortegn af kopierede transformationskoefficienter randomiseres, hvis en hvilken som helst af to tidligere rammer indeholder en transient.
6. Indretning (20) til sløring af rammetab, hvilken indretning omfatter: midler til at analysere fortegnsændringer af transformationskoefficienter i modtagne audiorammer ved bestemmelse af et antal fortegnsændringer mellem tilsvarende transformationskoefficienter i tilsvarende subvektorer af konsekutive ikke-fejlbehæftede rammer, der ikke indeholder en transient, hvor hver subvektor omfatter flere koefficienter af et frekvensbånd; midler til at akkumulere antallet af fortegnsændringer i tilsvarende subvektorer over et forudbestemt antal af konsekutive ikke-fejlbehæftede rammer, der ikke indeholder en transient; og midler til at rekonstruere en tabt ramme ved at kopiere transformationskoefficienterne fra en tidligere i kke-fej I behæftet ramme, der ikke indeholder en transient, men med omvendte fortegn af transformationskoefficienter i subvektorer med et akkumuleret antal af fortegnsændringer, der overstiger en forudbestemt tærskelværdi.
7. Indretning ifølge krav 6, hvor indretningen yderligere omfatter midler til at udføre fremgangsmåden ifølge mindst et af krav 2 til 5.
8. Indretning ifølge krav 6 eller 7, hvor indretningen er en audiodekoder.
9. Indretning ifølge et hvilket som helst af kravene 6 til 8, hvor indretningen er indeholdt i en mobilindretning.
10. Computerprogram (42) til sløring af rammetab, hvilket computerprogram omfatter en computerlæsbar kode (50, 52, 54), som, når den køres på en processor (22), får processoren til: at analysere fortegnsændringer af transformationskoefficienter i modtagne audiorammer ved bestemmelse af et antal fortegnsændringer mellem tilsvarende transformationskoefficienter i tilsvarende subvektorer af konsekutive ikke-fejlbehæftede rammer, der ikke indeholder en transient, hvor hver subvektor omfatter flere koefficienter af et frekvensbånd; at akkumulere antallet af fortegnsændringer i tilsvarende subvektorer over et forudbestemt antal af konsekutive ikke-fejlbehæftede rammer, der ikke indeholder en transient; og at rekonstruere en tabt ramme ved at kopiere transformationskoefficienterne fra en tidligere i kke-fej I behæftet ramme, der ikke indeholder en transient, men med omvendte fortegn af transformationskoefficienter i subvektorer med et akkumuleret antal af fortegnsændringer, der overstiger en forudbestemt tærskelværdi.
11. Computerprogram produkt (40) omfattende et computerlæsbart medium og et computerprogram (42) ifølge krav 10, der er lagret på det computerlæsbare medium.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201361764254P | 2013-02-13 | 2013-02-13 | |
| EP13805625.4A EP2956932B1 (en) | 2013-02-13 | 2013-11-12 | Frame error concealment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DK3098811T3 true DK3098811T3 (da) | 2019-01-28 |
Family
ID=49765637
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK16179227.0T DK3098811T3 (da) | 2013-02-13 | 2013-11-12 | Sløring af rammefejl |
| DK13805625.4T DK2956932T3 (da) | 2013-02-13 | 2013-11-12 | Skjul af rammefejl |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK13805625.4T DK2956932T3 (da) | 2013-02-13 | 2013-11-12 | Skjul af rammefejl |
Country Status (11)
| Country | Link |
|---|---|
| US (6) | US9514756B2 (da) |
| EP (3) | EP3432304B1 (da) |
| CN (2) | CN104995673B (da) |
| BR (1) | BR112015017082B1 (da) |
| DK (2) | DK3098811T3 (da) |
| ES (3) | ES2706512T3 (da) |
| HU (2) | HUE052041T2 (da) |
| MX (1) | MX342027B (da) |
| PL (2) | PL3098811T3 (da) |
| RU (3) | RU2628197C2 (da) |
| WO (1) | WO2014126520A1 (da) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104995673B (zh) * | 2013-02-13 | 2016-10-12 | 瑞典爱立信有限公司 | 帧错误隐藏 |
| SG11201510513WA (en) | 2013-06-21 | 2016-01-28 | Fraunhofer Ges Forschung | Method and apparatus for obtaining spectrum coefficients for a replacement frame of an audio signal, audio decoder, audio receiver and system for transmitting audio signals |
| EP3230980B1 (en) | 2014-12-09 | 2018-11-28 | Dolby International AB | Mdct-domain error concealment |
| US10504525B2 (en) * | 2015-10-10 | 2019-12-10 | Dolby Laboratories Licensing Corporation | Adaptive forward error correction redundant payload generation |
| CN107863109B (zh) * | 2017-11-03 | 2020-07-03 | 深圳大希创新科技有限公司 | 一种抑制噪声的静音控制方法及系统 |
| EP3553777B1 (en) * | 2018-04-09 | 2022-07-20 | Dolby Laboratories Licensing Corporation | Low-complexity packet loss concealment for transcoded audio signals |
| AU2019437394A1 (en) * | 2019-03-25 | 2021-10-21 | Razer (Asia-Pacific) Pte. Ltd. | Method and apparatus for using incremental search sequence in audio error concealment |
Family Cites Families (32)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5699485A (en) * | 1995-06-07 | 1997-12-16 | Lucent Technologies Inc. | Pitch delay modification during frame erasures |
| FI963870A (fi) * | 1996-09-27 | 1998-03-28 | Nokia Oy Ab | Virheiden piilottaminen digitaalisessa audiovastaanottimessa |
| FI118242B (fi) * | 2000-09-19 | 2007-08-31 | Nokia Corp | Puhekehyksen käsitteleminen radiojärjestelmässä |
| JP2002111635A (ja) * | 2000-10-03 | 2002-04-12 | Matsushita Electric Ind Co Ltd | デジタルオーディオ及び視覚情報の能率的な誤り検出と同期化の方法 |
| US7031926B2 (en) * | 2000-10-23 | 2006-04-18 | Nokia Corporation | Spectral parameter substitution for the frame error concealment in a speech decoder |
| US7711563B2 (en) * | 2001-08-17 | 2010-05-04 | Broadcom Corporation | Method and system for frame erasure concealment for predictive speech coding based on extrapolation of speech waveform |
| WO2003043277A1 (fr) * | 2001-11-15 | 2003-05-22 | Matsushita Electric Industrial Co., Ltd. | Appareil et procede de masquage d'erreur |
| AU2003903826A0 (en) * | 2003-07-24 | 2003-08-07 | University Of South Australia | An ofdm receiver structure |
| CA2388439A1 (en) * | 2002-05-31 | 2003-11-30 | Voiceage Corporation | A method and device for efficient frame erasure concealment in linear predictive based speech codecs |
| US8908496B2 (en) * | 2003-09-09 | 2014-12-09 | Qualcomm Incorporated | Incremental redundancy transmission in a MIMO communication system |
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| WO2005109401A1 (ja) | 2004-05-10 | 2005-11-17 | Nippon Telegraph And Telephone Corporation | 音響信号のパケット通信方法、送信方法、受信方法、これらの装置およびプログラム |
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| US8620644B2 (en) * | 2005-10-26 | 2013-12-31 | Qualcomm Incorporated | Encoder-assisted frame loss concealment techniques for audio coding |
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| KR100862662B1 (ko) * | 2006-11-28 | 2008-10-10 | 삼성전자주식회사 | 프레임 오류 은닉 방법 및 장치, 이를 이용한 오디오 신호복호화 방법 및 장치 |
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| CN104995673B (zh) * | 2013-02-13 | 2016-10-12 | 瑞典爱立信有限公司 | 帧错误隐藏 |
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2013
- 2013-11-12 CN CN201380072906.8A patent/CN104995673B/zh active Active
- 2013-11-12 ES ES16179227T patent/ES2706512T3/es active Active
- 2013-11-12 RU RU2015138979A patent/RU2628197C2/ru active
- 2013-11-12 MX MX2015009415A patent/MX342027B/es active IP Right Grant
- 2013-11-12 HU HUE18191125A patent/HUE052041T2/hu unknown
- 2013-11-12 PL PL16179227T patent/PL3098811T3/pl unknown
- 2013-11-12 WO PCT/SE2013/051332 patent/WO2014126520A1/en active Application Filing
- 2013-11-12 PL PL13805625T patent/PL2956932T3/pl unknown
- 2013-11-12 EP EP18191125.6A patent/EP3432304B1/en active Active
- 2013-11-12 RU RU2017126008A patent/RU2705458C2/ru active
- 2013-11-12 ES ES18191125T patent/ES2816014T3/es active Active
- 2013-11-12 BR BR112015017082-0A patent/BR112015017082B1/pt active IP Right Grant
- 2013-11-12 DK DK16179227.0T patent/DK3098811T3/da active
- 2013-11-12 US US14/767,499 patent/US9514756B2/en active Active
- 2013-11-12 DK DK13805625.4T patent/DK2956932T3/da active
- 2013-11-12 CN CN201610908572.9A patent/CN107103909B/zh active Active
- 2013-11-12 EP EP16179227.0A patent/EP3098811B1/en active Active
- 2013-11-12 HU HUE13805625A patent/HUE030163T2/en unknown
- 2013-11-12 EP EP13805625.4A patent/EP2956932B1/en active Active
- 2013-11-12 ES ES13805625.4T patent/ES2603266T3/es active Active
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2016
- 2016-09-21 US US15/271,930 patent/US10013989B2/en active Active
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2018
- 2018-05-25 US US15/989,618 patent/US10566000B2/en active Active
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2019
- 2019-10-17 RU RU2019132960A patent/RU2019132960A/ru unknown
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2020
- 2020-01-20 US US16/747,269 patent/US11227613B2/en active Active
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2022
- 2022-01-07 US US17/570,460 patent/US11837240B2/en active Active
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2023
- 2023-11-01 US US18/386,020 patent/US20240144939A1/en active Pending
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