ATE328407T1 - METHOD FOR CODING INFORMATION SIGNALS - Google Patents

METHOD FOR CODING INFORMATION SIGNALS

Info

Publication number
ATE328407T1
ATE328407T1 AT99943854T AT99943854T ATE328407T1 AT E328407 T1 ATE328407 T1 AT E328407T1 AT 99943854 T AT99943854 T AT 99943854T AT 99943854 T AT99943854 T AT 99943854T AT E328407 T1 ATE328407 T1 AT E328407T1
Authority
AT
Austria
Prior art keywords
pulses
combinations
constraints
information signals
coding information
Prior art date
Application number
AT99943854T
Other languages
German (de)
Inventor
James P Ashley
Weimin Peng
Original Assignee
Motorola 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 Motorola Inc filed Critical Motorola Inc
Application granted granted Critical
Publication of ATE328407T1 publication Critical patent/ATE328407T1/en

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
    • 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
    • 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
    • G10L19/10—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a multipulse excitation
    • 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
    • G10L19/10—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a multipulse excitation
    • G10L19/107—Sparse pulse excitation, e.g. by using algebraic codebook

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)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Paper (AREA)
  • Control Of El Displays (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

To achieve high quality speech reconstruction at low bit rates, constraints on position combinations among two or more pulses (403) are implemented. By placing constraints on position combinations, certain combinations of pulses are prohibited which allows the most significant pulses to always be coded, thereby improving speech quality. After all valid combinations are considered, a list of pulse pairs (codebook) which can be indexed using a single, predetermined bit length codeword is produced. The codeword is transmitted to a destination where it is used by a decoder to reconstruct the original information signal.
AT99943854T 1998-09-11 1999-08-24 METHOD FOR CODING INFORMATION SIGNALS ATE328407T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15143098A 1998-09-11 1998-09-11

Publications (1)

Publication Number Publication Date
ATE328407T1 true ATE328407T1 (en) 2006-06-15

Family

ID=22538745

Family Applications (1)

Application Number Title Priority Date Filing Date
AT99943854T ATE328407T1 (en) 1998-09-11 1999-08-24 METHOD FOR CODING INFORMATION SIGNALS

Country Status (6)

Country Link
EP (1) EP1112625B1 (en)
JP (1) JP4460165B2 (en)
KR (1) KR100409167B1 (en)
AT (1) ATE328407T1 (en)
DE (1) DE69931641T2 (en)
WO (1) WO2000016501A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6539349B1 (en) 2000-02-15 2003-03-25 Lucent Technologies Inc. Constraining pulse positions in CELP vocoding
US7889103B2 (en) * 2008-03-13 2011-02-15 Motorola Mobility, Inc. Method and apparatus for low complexity combinatorial coding of signals

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2579356B1 (en) * 1985-03-22 1987-05-07 Cit Alcatel LOW-THROUGHPUT CODING METHOD OF MULTI-PULSE EXCITATION SIGNAL SPEECH
SE463691B (en) * 1989-05-11 1991-01-07 Ericsson Telefon Ab L M PROCEDURE TO DEPLOY EXCITATION PULSE FOR A LINEAR PREDICTIVE ENCODER (LPC) WORKING ON THE MULTIPULAR PRINCIPLE
US5754976A (en) * 1990-02-23 1998-05-19 Universite De Sherbrooke Algebraic codebook with signal-selected pulse amplitude/position combinations for fast coding of speech
JP3057907B2 (en) * 1992-06-16 2000-07-04 松下電器産業株式会社 Audio coding device
KR950011967B1 (en) * 1992-07-31 1995-10-12 임홍식 Memory rearangement device for semiconductor recorder
JP3196595B2 (en) * 1995-09-27 2001-08-06 日本電気株式会社 Audio coding device
JP4063911B2 (en) * 1996-02-21 2008-03-19 松下電器産業株式会社 Speech encoding device
US5970444A (en) * 1997-03-13 1999-10-19 Nippon Telegraph And Telephone Corporation Speech coding method
US5963897A (en) * 1998-02-27 1999-10-05 Lernout & Hauspie Speech Products N.V. Apparatus and method for hybrid excited linear prediction speech encoding
JP3180762B2 (en) * 1998-05-11 2001-06-25 日本電気株式会社 Audio encoding device and audio decoding device
JP3824810B2 (en) * 1998-09-01 2006-09-20 富士通株式会社 Speech coding method, speech coding apparatus, and speech decoding apparatus

Also Published As

Publication number Publication date
JP4460165B2 (en) 2010-05-12
KR20010073146A (en) 2001-07-31
DE69931641T2 (en) 2006-10-05
WO2000016501A1 (en) 2000-03-23
JP2002525667A (en) 2002-08-13
DE69931641D1 (en) 2006-07-06
EP1112625A1 (en) 2001-07-04
EP1112625A4 (en) 2004-06-16
EP1112625B1 (en) 2006-05-31
KR100409167B1 (en) 2003-12-12

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Legal Events

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