WO2006020185A3 - Method for riaa correction of audio signal with use of transformer and capacitor - Google Patents

Method for riaa correction of audio signal with use of transformer and capacitor Download PDF

Info

Publication number
WO2006020185A3
WO2006020185A3 PCT/US2005/025377 US2005025377W WO2006020185A3 WO 2006020185 A3 WO2006020185 A3 WO 2006020185A3 US 2005025377 W US2005025377 W US 2005025377W WO 2006020185 A3 WO2006020185 A3 WO 2006020185A3
Authority
WO
WIPO (PCT)
Prior art keywords
correction
riaa
transformer
secondary windings
capacitor
Prior art date
Application number
PCT/US2005/025377
Other languages
French (fr)
Other versions
WO2006020185A2 (en
Inventor
Alexander Y Sokolov
Original Assignee
Outsource Technologies Inc
Alexander Y Sokolov
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
Priority claimed from US10/898,020 external-priority patent/US7493180B2/en
Application filed by Outsource Technologies Inc, Alexander Y Sokolov filed Critical Outsource Technologies Inc
Publication of WO2006020185A2 publication Critical patent/WO2006020185A2/en
Publication of WO2006020185A3 publication Critical patent/WO2006020185A3/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/04—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in discharge-tube amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
    • H03F1/14—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of neutralising means
    • H03F1/16—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of neutralising means in discharge tube amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
    • H03F1/18—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of distributed coupling, i.e. distributed amplifiers
    • H03F1/20—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of distributed coupling, i.e. distributed amplifiers in discharge-tube amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/02—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with tubes only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/181—Low frequency amplifiers, e.g. audio preamplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/534—Transformer coupled at the input of an amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/541—Transformer coupled at the output of an amplifier

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Multimedia (AREA)
  • Amplifiers (AREA)

Abstract

RIAA correction of audio frequency signals is disclosed. A RIAA-correcting pre-amplifier uses a transformer having a primary winding and two or more secondary windings, with two of the secondary windings playing an essential role in RIAA-correction. Frequency correction of a signal coming from one of the secondary windings is carried out on a resistance and capacitance circuit (RC-type of correction), while frequency correction of a signal coming from another of the secondary windings is carried out with the use of an inductance and resistance circuit (RL type of correction).
PCT/US2005/025377 2004-07-22 2005-07-18 Method for riaa correction of audio signal with use of transformer and capacitor WO2006020185A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/898,020 2004-07-22
US10/898,020 US7493180B2 (en) 2004-04-08 2004-07-22 Method for RIAA correction of audio signal with use of transformer and capacitor

Publications (2)

Publication Number Publication Date
WO2006020185A2 WO2006020185A2 (en) 2006-02-23
WO2006020185A3 true WO2006020185A3 (en) 2006-08-10

Family

ID=35907963

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2005/025377 WO2006020185A2 (en) 2004-07-22 2005-07-18 Method for riaa correction of audio signal with use of transformer and capacitor

Country Status (1)

Country Link
WO (1) WO2006020185A2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5978491A (en) * 1996-11-21 1999-11-02 Vxi Corporation Circuitry for improving performance of electret microphone

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5978491A (en) * 1996-11-21 1999-11-02 Vxi Corporation Circuitry for improving performance of electret microphone

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SEDRA AND SMITH: "Microelectronic Circuits", vol. 4TH ED., 1998, pages: 183 *

Also Published As

Publication number Publication date
WO2006020185A2 (en) 2006-02-23

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