EP2187387A3 - Apparatus and method for encoding and decoding enhancement layer - Google Patents

Apparatus and method for encoding and decoding enhancement layer Download PDF

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Publication number
EP2187387A3
EP2187387A3 EP10153693A EP10153693A EP2187387A3 EP 2187387 A3 EP2187387 A3 EP 2187387A3 EP 10153693 A EP10153693 A EP 10153693A EP 10153693 A EP10153693 A EP 10153693A EP 2187387 A3 EP2187387 A3 EP 2187387A3
Authority
EP
European Patent Office
Prior art keywords
samples
exponent
frame
encoding
enhancement layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP10153693A
Other languages
German (de)
French (fr)
Other versions
EP2187387B1 (en
EP2187387A2 (en
Inventor
Jongmo Sung
Do-Young Kim
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Electronics and Telecommunications Research Institute ETRI
Original Assignee
Electronics and Telecommunications Research Institute ETRI
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020080024919A external-priority patent/KR100912826B1/en
Application filed by Electronics and Telecommunications Research Institute ETRI filed Critical Electronics and Telecommunications Research Institute ETRI
Publication of EP2187387A2 publication Critical patent/EP2187387A2/en
Publication of EP2187387A3 publication Critical patent/EP2187387A3/en
Application granted granted Critical
Publication of EP2187387B1 publication Critical patent/EP2187387B1/en
Active legal-status Critical Current
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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
    • G10L19/04—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
    • 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
    • G10L19/002—Dynamic bit allocation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Quality & Reliability (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

Provided is a method and apparatus for encoding and decoding an enhancement layer to reduce quantization error in a G.71 codec. Exponent indices of additional mantissa information of each samples are calculated based upon exponent information of each samples in a frame. A process of allocating 1 bit to each sample with a current exponent index is repeated, the exponent index starting from the maximum value while decreasing by 1 at every repetition until the total number of bits allocated to the samples is equal to the total number of available bits in the frame. And the most significant bits, as many as the number of bits allocated to each sample, are extracted from the additional mantissa information of each samples in the frame.
EP10153693.6A 2007-08-16 2008-08-18 Method for encoding and decoding an enhancement layer Active EP2187387B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20070082346 2007-08-16
KR1020080024919A KR100912826B1 (en) 2007-08-16 2008-03-18 A enhancement layer encoder/decoder for improving a voice quality in G.711 codec and method therefor
KR1020080079929A KR100912827B1 (en) 2007-08-16 2008-08-14 A enhancement layer encoder/decoder for improving a voice quality in G.711 codec and method therefor
EP08793289A EP2179415B1 (en) 2007-08-16 2008-08-18 Apparatus and method for encoding an enhancement layer

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP08793289.3 Division 2008-08-18

Publications (3)

Publication Number Publication Date
EP2187387A2 EP2187387A2 (en) 2010-05-19
EP2187387A3 true EP2187387A3 (en) 2012-01-25
EP2187387B1 EP2187387B1 (en) 2013-07-31

Family

ID=40350862

Family Applications (3)

Application Number Title Priority Date Filing Date
EP10153693.6A Active EP2187387B1 (en) 2007-08-16 2008-08-18 Method for encoding and decoding an enhancement layer
EP08793289A Active EP2179415B1 (en) 2007-08-16 2008-08-18 Apparatus and method for encoding an enhancement layer
EP10153630A Active EP2202728B1 (en) 2007-08-16 2008-08-18 Apparatus and method for decoding an enhancement layer

Family Applications After (2)

Application Number Title Priority Date Filing Date
EP08793289A Active EP2179415B1 (en) 2007-08-16 2008-08-18 Apparatus and method for encoding an enhancement layer
EP10153630A Active EP2202728B1 (en) 2007-08-16 2008-08-18 Apparatus and method for decoding an enhancement layer

Country Status (2)

Country Link
EP (3) EP2187387B1 (en)
WO (1) WO2009022884A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104067338A (en) * 2011-10-19 2014-09-24 奥兰吉公司 Improved hierarchical coding

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102959619B (en) * 2010-06-29 2014-06-11 日本电信电话株式会社 Bit allocation device, method, program and recording medium thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6785261B1 (en) * 1999-05-28 2004-08-31 3Com Corporation Method and system for forward error correction with different frame sizes
US6724814B1 (en) * 1999-06-24 2004-04-20 Intel Corporation Pad and CODEC detection
US6650762B2 (en) * 2001-05-31 2003-11-18 Southern Methodist University Types-based, lossy data embedding

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
"Pulse code modulation (PCM) of voice frequencies; G.711 (11/88)", ITU-T STANDARD IN FORCE (I), INTERNATIONAL TELECOMMUNICATION UNION, GENEVA, CH, no. G.711 (11/88), 25 November 1988 (1988-11-25), XP017400850 *
"Wideband embedded extension for G.711 pulse code modulation; G.711.1 (03/08)", ITU-T STANDARD, INTERNATIONAL TELECOMMUNICATION UNION, GENEVA ; CH, no. G.711.1 (03/08), 15 March 2008 (2008-03-15), XP017433779 *
HIWASAKI Y ET AL: "A G.711 EMBEDDED WIDEBAND SPEECH CODING FOR VOIP CONFERENCES", IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS, INFORMATION & SYSTEMS SOCIETY, TOKYO, JP, vol. E89D, no. 9, 1 September 2006 (2006-09-01), pages 2542 - 2552, XP001542710, ISSN: 0916-8532 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104067338A (en) * 2011-10-19 2014-09-24 奥兰吉公司 Improved hierarchical coding
CN104067338B (en) * 2011-10-19 2016-10-05 奥兰吉公司 Improved hierarchical coding

Also Published As

Publication number Publication date
EP2187387B1 (en) 2013-07-31
EP2179415A1 (en) 2010-04-28
EP2202728A1 (en) 2010-06-30
WO2009022884A1 (en) 2009-02-19
EP2187387A2 (en) 2010-05-19
EP2179415A4 (en) 2011-07-20
EP2179415B1 (en) 2013-03-20
EP2202728B1 (en) 2013-03-27

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