ES2089113T3 - PROCEDURE TO CODE AN ANALOGUE SIGNAL THAT HAS A REPETITIVE NATURE AND A DEVICE TO CODE THROUGH SUCH A PROCEDURE. - Google Patents

PROCEDURE TO CODE AN ANALOGUE SIGNAL THAT HAS A REPETITIVE NATURE AND A DEVICE TO CODE THROUGH SUCH A PROCEDURE.

Info

Publication number
ES2089113T3
ES2089113T3 ES91202274T ES91202274T ES2089113T3 ES 2089113 T3 ES2089113 T3 ES 2089113T3 ES 91202274 T ES91202274 T ES 91202274T ES 91202274 T ES91202274 T ES 91202274T ES 2089113 T3 ES2089113 T3 ES 2089113T3
Authority
ES
Spain
Prior art keywords
segment
samples
coded
ltp
segments
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.)
Expired - Lifetime
Application number
ES91202274T
Other languages
Spanish (es)
Inventor
Der Krogt Adrianus Alphons Van
Ravesteijn Robertus Lamber Van
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.)
Koninklijke PTT Nederland NV
Original Assignee
Koninklijke PTT Nederland NV
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=19857655&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES2089113(T3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Koninklijke PTT Nederland NV filed Critical Koninklijke PTT Nederland NV
Application granted granted Critical
Publication of ES2089113T3 publication Critical patent/ES2089113T3/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
    • 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
    • G10L19/09—Long term prediction, i.e. removing periodical redundancies, e.g. by using adaptive codebook or pitch predictor

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Analogue/Digital Conversion (AREA)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)

Abstract

METODO Y DISPOSITIVO PARA CODIFICAR UN SEGMENTO DE SEÑAL DE UNA SEÑAL ANALOGICA MUESTREADA QUE TIENE UNA NATURALEZA REPETITIVA SEGUN EL PRINCIPIO DE PREDICCION A LARGO PLAZO (LTP), EN QUE LA PRECISION SE ALCANZA EN LA CODIFICACION QUE ES COMPARABLE A LA DE UNA LTP DE ALTA RESOLUCION (HLTP) SIN LA COMPLEJIDAD AUMENTANDO DE MANERA APRECIABLE RESPECTO A LO DE LA LTP. SEGUN EL METODO, DESPUES DE DETERMINAR EL NUMERO DE MUESTRAS D ENTRE EL PRINCIPIO DEL SEGMENTO A SER CODIFICADO Y EL PRINCIPIO DEL SEGMENTO QUE MAS SE PARECE DETERMINADO SEGUN EL PRINCIPIO DE LA LTP, EL NUMERO DE MUESTRAS EN EL SEGMENTO A SER CODIFICADO LO AUMENTA UN FACTOR OB PREDETERMINADO SI SE COLOCAN SIEMPRE MUESTRAS (OB STRAS CONSECUTIVAS Y EL NUMERO DE MUESTRAS EN EL SEGMENTO PRECEDENTE TAMBIEN LO AUMENTA EL FACTOR OB; EN EL SEGMENTO PRECEDENTE, LOS SEGMENTOS CD PARCIALES SE DETERMINAN EN CASO DE QUE EL NUMERO DE MUESTRAS DD, EXPRESADO EN LOS NUMEROS DE MUESTRAS DESPUES DE SOBREMUESTREAR, ENTRE EL INSTANTE DE TIEMPO INICIALDEL SEGMENTO A SER CODIFICADO Y EL INSTANTE DE TIEMPO INICIAL DE UN SEGMENTO CD PARCIAL CUMPLE CON: DD = (D ELEVADO * OB)/D, EN QUE D = 1, 2, 3, 4...N, DONDE N ES UN ENTERO POSITIVO Y DONDE OB Y N SE ELIGEN DE UNA MANERA TAL QUE DD ES SIEMPRE UN ENTERO, DESPUES DE LO CUAL, SE DETERMINAN LOS VALORES DE LA MUESTRA EN LOS SEGMENTOS CD, MEDIANTE UN METODO DE INTERPOLACION, EN POSICIONES PREDETERMINADAS COLOCADAS CON UNA SEPARACION DD DE LAS MUESTRAS ORIGINALES DEL SEGMENTO A SER CODIFICADO; DE LOS SEGMENTOS CD, ESE SEGMENTO CD SE ELIGE COMO EL SEGMENTO MAS PARECIDO QUE TIENE UN VALOR DE CORRELACION RD CON LAS MUESTRAS DEL SEGMENTO A SER CODIFICADO PARA LO CUAL SE DA EL CASO QUE RD (MAYOR O IGUAL) Q ELEVADO * R SUB MAX, DONDE Q<1 Y R SUB MAX ES EL VALOR DE CORRECCION MAXIMO QUE SE HA ENCONTRADO AL CORRELACIONAR LOS SEGMENTOS CD Y EL SEGMENTO A SER CODIFICADO Y ES ESE SEGMENTO EL QUE PRODUCE EL MENOR VALOR ASOCIADO DE DD.METHOD AND DEVICE FOR CODING A SIGNAL SEGMENT OF A SAMPLE ANALOGUE SIGNAL THAT HAS A REPETITIVE NATURE ACCORDING TO THE PRINCIPLE OF LONG-TERM PREDICTION (LTP), IN WHICH THE PRECISION IS REACHED IN THE CODING THAT IS COMPARED TO THAT OF A LTP RESOLUTION (HLTP) WITHOUT THE COMPLEXITY INCREASING IN AN APPRECIABLE WAY REGARDING THE LTP. ACCORDING TO THE METHOD, AFTER DETERMINING THE NUMBER OF SAMPLES D BETWEEN THE PRINCIPLE OF THE SEGMENT TO BE CODED AND THE PRINCIPLE OF THE SEGMENT THAT MOST LOOKS DETERMINED ACCORDING TO THE PRINCIPLE OF THE LTP, THE NUMBER OF SAMPLES IN THE SEGMENT TO BE CODED INCREASES ONE DEFAULT OB FACTOR IF SAMPLES ARE ALWAYS PLACED (CONSECUTIVE OB STRAS AND THE NUMBER OF SAMPLES IN THE PRECEDING SEGMENT ARE ALSO INCREASED BY THE OB FACTOR; IN THE PREVIOUS SEGMENT, THE PARTIAL CD SEGMENTS ARE DETERMINED BY THE NUMBER OF IN THE NUMBERS OF SAMPLES AFTER OVER SAMPLING, BETWEEN THE INSTANT OF INITIAL TIME OF THE SEGMENT TO BE CODED AND THE INSTANT OF INITIAL TIME OF A PARTIAL CD SEGMENT COMPLIES WITH: DD = (D HIGH * OB) / D, IN WHICH D = 1, 2, 3, 4 ... N, WHERE N IS A POSITIVE INTEGER AND WHERE OB AND N ARE CHOSEN IN A WAY SUCH THAT DD IS ALWAYS AN INTEGER, AFTER WHICH, THE VALUES OF THE SAMPLE IN THE CD SEGMENTS ARE DETERMINED, THROUGH A METHOD OF INTER POLATION, IN DEFAULT POSITIONS PLACED WITH A SEPARATION DD OF THE ORIGINAL SAMPLES OF THE SEGMENT TO BE CODED; OF THE CD SEGMENTS, THAT CD SEGMENT IS CHOSEN AS THE MOST RELATED SEGMENT THAT HAS A CORRELATION VALUE RD WITH THE SAMPLES OF THE SEGMENT TO BE CODED FOR WHICH IS THE CASE THAT RD (GREATER OR EQUAL) Q ELEVATED * R SUB MAX , WHERE Q <1 YR SUB MAX IS THE MAXIMUM CORRECTION VALUE THAT HAS BEEN FOUND WHEN CORRECTING THE CD SEGMENTS AND THE SEGMENT TO BE CODED AND IT IS THAT SEGMENT THAT PRODUCES THE LOWEST ASSOCIATED VALUE OF DD.

ES91202274T 1990-09-10 1991-09-06 PROCEDURE TO CODE AN ANALOGUE SIGNAL THAT HAS A REPETITIVE NATURE AND A DEVICE TO CODE THROUGH SUCH A PROCEDURE. Expired - Lifetime ES2089113T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL9001985A NL9001985A (en) 1990-09-10 1990-09-10 METHOD FOR CODING AN ANALOGUE SIGNAL WITH A REPEATING CHARACTER AND A DEVICE FOR CODING ACCORDING TO THIS METHOD

Publications (1)

Publication Number Publication Date
ES2089113T3 true ES2089113T3 (en) 1996-10-01

Family

ID=19857655

Family Applications (1)

Application Number Title Priority Date Filing Date
ES91202274T Expired - Lifetime ES2089113T3 (en) 1990-09-10 1991-09-06 PROCEDURE TO CODE AN ANALOGUE SIGNAL THAT HAS A REPETITIVE NATURE AND A DEVICE TO CODE THROUGH SUCH A PROCEDURE.

Country Status (11)

Country Link
EP (1) EP0475520B1 (en)
JP (1) JP2640595B2 (en)
AT (1) ATE137354T1 (en)
CA (1) CA2050979C (en)
DE (1) DE69119005T2 (en)
DK (1) DK0475520T3 (en)
ES (1) ES2089113T3 (en)
FI (1) FI105624B (en)
NL (1) NL9001985A (en)
NO (1) NO302549B1 (en)
PT (1) PT98900B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI116992B (en) * 1999-07-05 2006-04-28 Nokia Corp Methods, systems, and devices for enhancing audio coding and transmission
US7388201B2 (en) 2005-05-13 2008-06-17 National University Of Singapore Radiation detector having coated nanostructure and method
WO2024194336A1 (en) * 2023-03-21 2024-09-26 Telefonaktiebolaget Lm Ericsson (Publ) Coding of granular synthesis databases
CN117176177B (en) * 2023-11-03 2024-02-06 金乡县林业保护和发展服务中心(金乡县湿地保护中心、金乡县野生动植物保护中心、金乡县国有白洼林场) A data sharing method and system for forestry information

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5648688A (en) * 1979-09-28 1981-05-01 Hitachi Ltd Sound analyser
ES2037101T3 (en) * 1987-03-05 1993-06-16 International Business Machines Corporation TONE DETECTION AND VOICE ENCODER PROCEDURE USING SUCH PROCEDURE.

Also Published As

Publication number Publication date
ATE137354T1 (en) 1996-05-15
EP0475520B1 (en) 1996-04-24
FI105624B (en) 2000-09-15
DK0475520T3 (en) 1996-09-02
JP2640595B2 (en) 1997-08-13
FI914261A0 (en) 1991-09-10
NL9001985A (en) 1992-04-01
EP0475520A2 (en) 1992-03-18
EP0475520A3 (en) 1992-09-30
DE69119005D1 (en) 1996-05-30
NO913448L (en) 1992-03-11
PT98900A (en) 1994-01-31
NO302549B1 (en) 1998-03-16
CA2050979C (en) 1996-05-21
DE69119005T2 (en) 1996-11-28
JPH05206955A (en) 1993-08-13
NO913448D0 (en) 1991-09-03
FI914261A7 (en) 1992-03-11
CA2050979A1 (en) 1992-03-11
PT98900B (en) 1999-02-26

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