CA2098319C - Processeur a signaux servant a restituer les signaux audio d'origine - Google Patents

Processeur a signaux servant a restituer les signaux audio d'origine Download PDF

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Publication number
CA2098319C
CA2098319C CA002098319A CA2098319A CA2098319C CA 2098319 C CA2098319 C CA 2098319C CA 002098319 A CA002098319 A CA 002098319A CA 2098319 A CA2098319 A CA 2098319A CA 2098319 C CA2098319 C CA 2098319C
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CA
Canada
Prior art keywords
audio signal
frequency
harmonic
input
phase shifting
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 - Fee Related
Application number
CA002098319A
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English (en)
Other versions
CA2098319A1 (fr
Inventor
Eldon A. Byrd
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2098319A1 publication Critical patent/CA2098319A1/fr
Application granted granted Critical
Publication of CA2098319C publication Critical patent/CA2098319C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S1/00—Two-channel systems
    • H04S1/002—Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Stereophonic System (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Abstract

Processeur (10, 12, 14) de signaux audio permettant de corriger des imprécisions d'harmonique et de phase provoquées par la transduction, l'enregistrement et la lecture de signaux audio en direct. On utilise des amplificateurs opérationnels à vitesses de balayage rapides et à grandes largeurs de bande afin de constituer un circuit simple mais efficace pouvant se réduire à une seule puce. Une phase de signal est décalée en continu et automatiquement sous forme d'une fonction logarithmique de fréquence afin de compenser les différences dans les vitesses de propagation, réduisant ainsi la déformation spatiale inhérente au haut-parleur de conception classique. Les fréquences harmoniques se produisant lors d'une représentation en direct sont régénérées par le processeur de signaux afin de restituer le réalisme au signal audio reproduit.
CA002098319A 1990-12-14 1991-12-13 Processeur a signaux servant a restituer les signaux audio d'origine Expired - Fee Related CA2098319C (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US62776790A 1990-12-14 1990-12-14
US627,767 1990-12-14
US79390891A 1991-11-20 1991-11-20
US07/793,908 1991-11-20
PCT/US1991/009375 WO1992010918A1 (fr) 1990-12-14 1991-12-13 Processeur de signaux recreant des signaux audio originaux

Publications (2)

Publication Number Publication Date
CA2098319A1 CA2098319A1 (fr) 1993-05-21
CA2098319C true CA2098319C (fr) 2000-01-25

Family

ID=27090523

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002098319A Expired - Fee Related CA2098319C (fr) 1990-12-14 1991-12-13 Processeur a signaux servant a restituer les signaux audio d'origine

Country Status (3)

Country Link
AU (1) AU9116091A (fr)
CA (1) CA2098319C (fr)
WO (1) WO1992010918A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5425106A (en) * 1993-06-25 1995-06-13 Hda Entertainment, Inc. Integrated circuit for audio enhancement system
FR2751828A1 (fr) * 1996-07-24 1998-01-30 Guisto Marc Albert Procede et dispositif de decodage, convertissant un signal d'origine stereophonique en signal surround pour les voies arrieres, destine a la reproduction sonore a effet cinema ou home cinema
WO1999025150A1 (fr) * 1997-11-07 1999-05-20 Koninklijke Philips Electronics N.V. Ensemble haute fidelite comprenant un circuit de traitement du signal son
FR3106030B1 (fr) 2020-01-06 2022-05-20 Innovation Electro Acoustique Procédé et dispositif associé pour transformer des caractéristiques d’un signal audio

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4706287A (en) * 1984-10-17 1987-11-10 Kintek, Inc. Stereo generator
JPS61281799A (ja) * 1985-06-07 1986-12-12 Dainabekutaa Kk 音声信号再生方式
JP2536044Y2 (ja) * 1986-09-19 1997-05-21 パイオニア株式会社 両耳相関係数補正装置
JPS63224599A (ja) * 1987-03-13 1988-09-19 Asa Plan:Kk ステレオ処理装置

Also Published As

Publication number Publication date
WO1992010918A1 (fr) 1992-06-25
AU9116091A (en) 1992-07-08
CA2098319A1 (fr) 1993-05-21

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Legal Events

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MKLA Lapsed

Effective date: 20041213