EP1431962A3 - Wideband speech coding system and method - Google Patents

Wideband speech coding system and method Download PDF

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Publication number
EP1431962A3
EP1431962A3 EP04100553A EP04100553A EP1431962A3 EP 1431962 A3 EP1431962 A3 EP 1431962A3 EP 04100553 A EP04100553 A EP 04100553A EP 04100553 A EP04100553 A EP 04100553A EP 1431962 A3 EP1431962 A3 EP 1431962A3
Authority
EP
European Patent Office
Prior art keywords
lowband
wideband speech
coding system
speech coding
coding
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
EP04100553A
Other languages
German (de)
French (fr)
Other versions
EP1431962B1 (en
EP1431962A2 (en
Inventor
Alan V Mccree
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.)
Texas Instruments Inc
Original Assignee
Texas Instruments Inc
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
Application filed by Texas Instruments Inc filed Critical Texas Instruments Inc
Priority claimed from EP01000172A external-priority patent/EP1158495B1/en
Publication of EP1431962A2 publication Critical patent/EP1431962A2/en
Publication of EP1431962A3 publication Critical patent/EP1431962A3/en
Application granted granted Critical
Publication of EP1431962B1 publication Critical patent/EP1431962B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Quality & Reliability (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)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

A speech encoder/decoder for wideband speech with a partitioning of wideband into lowband and highband, and convenient coding of the lowband. The narrowband coding may be an LP-based voiceband coder; and the high band coding may include spectral reversal so it can effectively use the voiceband coder's quantizer. The embedded lowband may be extracted for a lower bit rate decoder.
EP04100553A 2000-05-22 2001-05-22 Wideband speech coding system and method Expired - Lifetime EP1431962B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US20615600P 2000-05-22 2000-05-22
US206156P 2000-05-22
EP01000172A EP1158495B1 (en) 2000-05-22 2001-05-22 Wideband speech coding system and method

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP01000172A Division EP1158495B1 (en) 2000-05-22 2001-05-22 Wideband speech coding system and method
EP01000172A Division-Into EP1158495B1 (en) 2000-05-22 2001-05-22 Wideband speech coding system and method

Publications (3)

Publication Number Publication Date
EP1431962A2 EP1431962A2 (en) 2004-06-23
EP1431962A3 true EP1431962A3 (en) 2004-12-01
EP1431962B1 EP1431962B1 (en) 2006-04-05

Family

ID=32395343

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04100553A Expired - Lifetime EP1431962B1 (en) 2000-05-22 2001-05-22 Wideband speech coding system and method

Country Status (1)

Country Link
EP (1) EP1431962B1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1785984A4 (en) 2004-08-31 2008-08-06 Matsushita Electric Ind Co Ltd Audio encoding apparatus, audio decoding apparatus, communication apparatus and audio encoding method
BRPI0515453A (en) 2004-09-17 2008-07-22 Matsushita Electric Ind Co Ltd scalable coding apparatus, scalable decoding apparatus, scalable coding method scalable decoding method, communication terminal apparatus, and base station apparatus
EP1793373A4 (en) 2004-09-17 2008-10-01 Matsushita Electric Ind Co Ltd Audio encoding apparatus, audio decoding apparatus, communication apparatus and audio encoding method
WO2008081777A1 (en) 2006-12-25 2008-07-10 Kyushu Institute Of Technology High-frequency signal interpolation device and high-frequency signal interpolation method
DE102008015702B4 (en) 2008-01-31 2010-03-11 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for bandwidth expansion of an audio signal

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
ADIL BENYASSINE ET AL INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS: "MULTIBAND CELP CODING OF SPEECH", PROCEEDINGS OF THE ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS AND COMPUTERS. PÜACIFIC GROVE, NOV. 5 - 7, 1990, NEW YORK, IEEE, US, vol. VOL. 2 CONF. 24, 5 November 1990 (1990-11-05), pages 644 - 648, XP000280093 *
MCCREE A ED - INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS: "A 14 kb/s wideband speech coder with a parametric highband model", 2000 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING. PROCEEDINGS. (ICASSP). ISTANBUL, TURKEY, JUNE 5-9, 2000, IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING (ICASSP), NEW YORK, NY : IEEE, US, vol. VOL. 2 OF 6, 5 June 2000 (2000-06-05), pages II1153 - II1156, XP002162018, ISBN: 0-7803-6294-2 *
TIAN W ET AL: "LOW-DELAY SUBBAND CELP CODING FOR WIDEBAND SPEECH", 1996 IEEE TENCON. DIGITAL SIGNAL PROCESSING APPLICATIONS PROCEEDINGS. PERTH, NOV. 26 - 29, 1996, IEEETENCON - DIGITAL SIGNAL PROCESSING APPLICATIONS, NEW YORK, NY : IEEE, US, vol. VOL. 1, 26 November 1996 (1996-11-26), pages 189 - 194, XP000781677, ISBN: 0-7803-3680-1 *

Also Published As

Publication number Publication date
EP1431962B1 (en) 2006-04-05
EP1431962A2 (en) 2004-06-23

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