JP6423460B2 - フレームエラー隠匿装置 - Google Patents
フレームエラー隠匿装置 Download PDFInfo
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- JP6423460B2 JP6423460B2 JP2017000620A JP2017000620A JP6423460B2 JP 6423460 B2 JP6423460 B2 JP 6423460B2 JP 2017000620 A JP2017000620 A JP 2017000620A JP 2017000620 A JP2017000620 A JP 2017000620A JP 6423460 B2 JP6423460 B2 JP 6423460B2
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- 238000000034 method Methods 0.000 claims abstract description 175
- 238000004458 analytical method Methods 0.000 claims description 57
- 238000012417 linear regression Methods 0.000 claims description 14
- 238000000611 regression analysis Methods 0.000 description 83
- 230000005284 excitation Effects 0.000 description 46
- 230000005236 sound signal Effects 0.000 description 44
- 238000001228 spectrum Methods 0.000 description 42
- 230000003595 spectral effect Effects 0.000 description 32
- 238000001514 detection method Methods 0.000 description 18
- 238000010586 diagram Methods 0.000 description 13
- 230000003068 static effect Effects 0.000 description 13
- 238000006243 chemical reaction Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 12
- 238000012886 linear function Methods 0.000 description 11
- 230000015572 biosynthetic process Effects 0.000 description 9
- 238000003786 synthesis reaction Methods 0.000 description 9
- 230000007704 transition Effects 0.000 description 8
- 230000000875 corresponding effect Effects 0.000 description 7
- 238000013139 quantization Methods 0.000 description 7
- 238000012805 post-processing Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 5
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- 230000002194 synthesizing effect Effects 0.000 description 5
- 230000003044 adaptive effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000002596 correlated effect Effects 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
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- 238000013213 extrapolation Methods 0.000 description 1
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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
- G10L19/005—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 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
- G10L19/083—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being an excitation gain
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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
- G10L19/16—Vocoder architecture
- G10L19/167—Audio streaming, i.e. formatting and decoding of an encoded audio signal representation into a data stream for transmission or storage purposes
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0045—Arrangements at the receiver end
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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
- G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
- G10L19/07—Line spectrum pair [LSP] vocoders
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Multimedia (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Health & Medical Sciences (AREA)
- Acoustics & Sound (AREA)
- Computational Linguistics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Quality & Reliability (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Error Detection And Correction (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Maintenance And Management Of Digital Transmission (AREA)
Description
110 エラー検出部
120 復号化部
130 フレームエラー隠匿部
140 隠匿方式設定部
142 信号特性分析部
144 設定部
150 エラー隠匿部
200 音声復号化装置
210 エラー検出部
220 復号化部
230 フレームエラー隠匿装置
240 励起信号復号化部
250 LSP復号化部
260 LPS/LPC変換部
270 合成フィルター
280 隠匿方式設定部
282 信号特性分析部
284 設定部
290 エラー隠匿部
292 励起信号復元部
294 LSP復元部
300 第1関数導出部
310 利得調節部
320 第1予測部
330 第1後処理部
340 励起信号合成部
350 LSP/スペクトル変換部
360 第2関数導出部
370 第2予測部
380 第2後処理部
390 スペクトル/LSP変換部
500 オーディオ復号化装置
510 エラー検出部
520 復号化部
530 フレームエラー隠匿部
540 無損失復号化部
550 逆量子化部
560 フィルターバンク
570 隠匿方式設定部
572 信号特性分析部
574 設定部
580 エラー隠匿部
600 オーディオ復号化装置
610 エラー検出部
620 復号化部
630 フレームエラー隠匿部
640 無損失復号化部
650 逆量子化部
660 フィルターバンク
670 隠匿方式設定部
672 信号特性分析部
674 設定部
680 エラー隠匿部
Claims (2)
- エラーフレームの以前正常フレームから得られる信号特性に基づいて線形回帰分析で参照するための以前正常フレームの数を決定するステップと、
前記決定された数だけの前記以前正常フレームのパラメータに対して前記線形回帰分析を行って、前記エラーフレームのためのパラメータを予測するステップと、
前記予測されたパラメータに基づいて前記エラーフレームを隠蔽するステップと、
を含むことを特徴とするフレームエラー隠匿方法。 - 前記予測するステップは、
前記予測されたパラメータを所定範囲内に調整することを特徴とすることを特徴とする請求項1に記載のフレームエラー隠匿方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020060118563A KR100862662B1 (ko) | 2006-11-28 | 2006-11-28 | 프레임 오류 은닉 방법 및 장치, 이를 이용한 오디오 신호복호화 방법 및 장치 |
KR10-2006-0118563 | 2006-11-28 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2014100896A Division JP6073830B2 (ja) | 2006-11-28 | 2014-05-14 | フレームエラー隠匿装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2017078870A JP2017078870A (ja) | 2017-04-27 |
JP6423460B2 true JP6423460B2 (ja) | 2018-11-14 |
Family
ID=39465262
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2009539176A Active JP5607365B2 (ja) | 2006-11-28 | 2007-11-13 | フレームエラー隠匿方法 |
JP2014100896A Active JP6073830B2 (ja) | 2006-11-28 | 2014-05-14 | フレームエラー隠匿装置 |
JP2017000620A Active JP6423460B2 (ja) | 2006-11-28 | 2017-01-05 | フレームエラー隠匿装置 |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2009539176A Active JP5607365B2 (ja) | 2006-11-28 | 2007-11-13 | フレームエラー隠匿方法 |
JP2014100896A Active JP6073830B2 (ja) | 2006-11-28 | 2014-05-14 | フレームエラー隠匿装置 |
Country Status (8)
Country | Link |
---|---|
US (3) | US8843798B2 (ja) |
EP (6) | EP2450886A1 (ja) |
JP (3) | JP5607365B2 (ja) |
KR (1) | KR100862662B1 (ja) |
AT (1) | ATE544149T1 (ja) |
ES (1) | ES2865099T3 (ja) |
PL (1) | PL2482278T3 (ja) |
WO (1) | WO2008066264A1 (ja) |
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2006
- 2006-11-28 KR KR1020060118563A patent/KR100862662B1/ko active IP Right Grant
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2007
- 2007-11-06 US US11/935,600 patent/US8843798B2/en active Active
- 2007-11-13 AT AT07833999T patent/ATE544149T1/de active
- 2007-11-13 EP EP12153291A patent/EP2450886A1/en not_active Withdrawn
- 2007-11-13 ES ES12153265T patent/ES2865099T3/es active Active
- 2007-11-13 PL PL12153304T patent/PL2482278T3/pl unknown
- 2007-11-13 EP EP12153304.6A patent/EP2482278B1/en active Active
- 2007-11-13 EP EP07833999A patent/EP2102862B1/en active Active
- 2007-11-13 EP EP12153265.9A patent/EP2450884B1/en active Active
- 2007-11-13 EP EP12153234.5A patent/EP2450883B1/en active Active
- 2007-11-13 WO PCT/KR2007/005692 patent/WO2008066264A1/en active Application Filing
- 2007-11-13 JP JP2009539176A patent/JP5607365B2/ja active Active
- 2007-11-13 EP EP12153285.7A patent/EP2450885B1/en active Active
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2014
- 2014-05-08 US US14/272,643 patent/US9424851B2/en active Active
- 2014-05-14 JP JP2014100896A patent/JP6073830B2/ja active Active
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2016
- 2016-08-18 US US15/240,342 patent/US10096323B2/en active Active
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Also Published As
Publication number | Publication date |
---|---|
ATE544149T1 (de) | 2012-02-15 |
US9424851B2 (en) | 2016-08-23 |
EP2102862B1 (en) | 2012-02-01 |
EP2102862A4 (en) | 2011-01-26 |
EP2482278B1 (en) | 2020-03-04 |
US20140245091A1 (en) | 2014-08-28 |
US20080126904A1 (en) | 2008-05-29 |
JP6073830B2 (ja) | 2017-02-01 |
KR20080048317A (ko) | 2008-06-02 |
US20160358612A1 (en) | 2016-12-08 |
US8843798B2 (en) | 2014-09-23 |
EP2482278A1 (en) | 2012-08-01 |
EP2102862A1 (en) | 2009-09-23 |
EP2450885B1 (en) | 2021-07-07 |
JP2014160280A (ja) | 2014-09-04 |
JP2017078870A (ja) | 2017-04-27 |
EP2450886A1 (en) | 2012-05-09 |
JP2010511201A (ja) | 2010-04-08 |
KR100862662B1 (ko) | 2008-10-10 |
WO2008066264A1 (en) | 2008-06-05 |
ES2865099T3 (es) | 2021-10-15 |
EP2450884B1 (en) | 2021-03-31 |
EP2450883A1 (en) | 2012-05-09 |
EP2450883B1 (en) | 2021-07-21 |
US10096323B2 (en) | 2018-10-09 |
JP5607365B2 (ja) | 2014-10-15 |
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