ES2142543T3 - Compresion de audio perceptiva basada sobre la incertidumbre del volumen sonoro. - Google Patents

Compresion de audio perceptiva basada sobre la incertidumbre del volumen sonoro.

Info

Publication number
ES2142543T3
ES2142543T3 ES96300698T ES96300698T ES2142543T3 ES 2142543 T3 ES2142543 T3 ES 2142543T3 ES 96300698 T ES96300698 T ES 96300698T ES 96300698 T ES96300698 T ES 96300698T ES 2142543 T3 ES2142543 T3 ES 2142543T3
Authority
ES
Spain
Prior art keywords
tone
uncertainty
masking
compression
sound signals
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
ES96300698T
Other languages
English (en)
Inventor
Jonathan B Allen
Deepen Sinha
Mark R Sydorenko
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.)
AT&T Corp
Original Assignee
AT&T Corp
AT&T IPM Corp
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 AT&T Corp, AT&T IPM Corp filed Critical AT&T Corp
Application granted granted Critical
Publication of ES2142543T3 publication Critical patent/ES2142543T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/66—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission
    • H04B1/665—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission using psychoacoustic properties of the ear, e.g. masking effect

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)

Abstract

UNA NUEVA TECNICA PARA LA DETERMINACION DEL EFECTO DE ENMASCARAMIENTO DE UNA SEÑAL DE SONIDO SE EMPLEA PARA PROPORCIONAR COMPRESION TRANSPARENTE DE UNA SEÑAL DE SONIDO EN FRECUENCIAS DE FRAGMENTOS MUY REDUCIDAS. LA NUEVA TECNICA EMPLEA LOS RESULTADOS DE BUSQUEDA RECIENTE EN LA PSICO-FISICA DE ENMASCARAMIENTO DE RUIDO EN EL SISTEMA AUDITIVO HUMANO. ESTA BUSQUEDA SUGIERE QUE EL ENMASCARAMIENTO DE RUIDO ES UNA FUNCION DE LA INCERTIDUMBRE EN EL VOLUMEN PERCIBIDO POR EL CEREBRO. MEDIDAS DE LA INCERTIDUMBRE DE VOLUMEN SE EMPLEAN PARA DETERMINAR EL GRADO AL QUE LAS SEÑALES DE SONIDO SON "SIMILARES A TONOS" (O "SIMILARES A RUIDO"). EL GRADO DE TONO, REFERIDO COMO "TONALIDAD", SE UTILIZA PARA DETERMINAR UMBRALES DE ENMASCARAMIENTO PARA USO EN LA COMPRESION DE SEÑALES DE SONIDO. LA TONALIDAD, COMPUTADA DE ACUERDO CON LA PRESENTE INVENCION, SE UTILIZA EN DISPOSICIONES NUEVAS Y CONVENCIONALES PARA LOGRAR COMPRESION DE LAS SEÑALES DE SONIDO.
ES96300698T 1995-02-06 1996-01-31 Compresion de audio perceptiva basada sobre la incertidumbre del volumen sonoro. Expired - Lifetime ES2142543T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/384,049 US5682463A (en) 1995-02-06 1995-02-06 Perceptual audio compression based on loudness uncertainty

Publications (1)

Publication Number Publication Date
ES2142543T3 true ES2142543T3 (es) 2000-04-16

Family

ID=23515820

Family Applications (1)

Application Number Title Priority Date Filing Date
ES96300698T Expired - Lifetime ES2142543T3 (es) 1995-02-06 1996-01-31 Compresion de audio perceptiva basada sobre la incertidumbre del volumen sonoro.

Country Status (6)

Country Link
US (1) US5682463A (es)
EP (1) EP0725494B1 (es)
JP (1) JPH08272399A (es)
CA (1) CA2167967A1 (es)
DE (1) DE69602773T2 (es)
ES (1) ES2142543T3 (es)

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Also Published As

Publication number Publication date
DE69602773T2 (de) 1999-11-11
EP0725494B1 (en) 1999-06-09
CA2167967A1 (en) 1996-08-07
DE69602773D1 (de) 1999-07-15
JPH08272399A (ja) 1996-10-18
US5682463A (en) 1997-10-28
EP0725494A1 (en) 1996-08-07

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