EP1526758A3 - A 5.1 channel signal output mixer circuit for earphone - Google Patents

A 5.1 channel signal output mixer circuit for earphone Download PDF

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Publication number
EP1526758A3
EP1526758A3 EP03024363A EP03024363A EP1526758A3 EP 1526758 A3 EP1526758 A3 EP 1526758A3 EP 03024363 A EP03024363 A EP 03024363A EP 03024363 A EP03024363 A EP 03024363A EP 1526758 A3 EP1526758 A3 EP 1526758A3
Authority
EP
European Patent Office
Prior art keywords
signal
gain
earphone
mixer circuit
signal output
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.)
Withdrawn
Application number
EP03024363A
Other languages
German (de)
French (fr)
Other versions
EP1526758A2 (en
Inventor
Chen-Hua Hsu
Hsuan-Wei Huang
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.)
IATEC Ltd
Original Assignee
IATEC Ltd
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 IATEC Ltd filed Critical IATEC Ltd
Priority to EP03024363A priority Critical patent/EP1526758A3/en
Publication of EP1526758A2 publication Critical patent/EP1526758A2/en
Publication of EP1526758A3 publication Critical patent/EP1526758A3/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/002—Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution
    • H04S3/004—For headphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
    • H04S2400/09—Electronic reduction of distortion of stereophonic sound systems

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

A 5.1 channel signal output mixer circuit for earphone using step gain amplification unit comprising a filtering gain unit, a mixing gain unit and a noise reduction gain unit, wherein said filtering gain unit obtaining a bandwidth-adjusted subwoofer signal from two waveform shaping circuits, said mixing gain mixing said subwoofer signal with an output signal of a front channel to form a first signal, said noise reduction gain receiving said first signal for noise removal to form a signal and outputting said signal to a speaker.
EP03024363A 2003-10-24 2003-10-24 A 5.1 channel signal output mixer circuit for earphone Withdrawn EP1526758A3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03024363A EP1526758A3 (en) 2003-10-24 2003-10-24 A 5.1 channel signal output mixer circuit for earphone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03024363A EP1526758A3 (en) 2003-10-24 2003-10-24 A 5.1 channel signal output mixer circuit for earphone

Publications (2)

Publication Number Publication Date
EP1526758A2 EP1526758A2 (en) 2005-04-27
EP1526758A3 true EP1526758A3 (en) 2006-03-29

Family

ID=34384621

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03024363A Withdrawn EP1526758A3 (en) 2003-10-24 2003-10-24 A 5.1 channel signal output mixer circuit for earphone

Country Status (1)

Country Link
EP (1) EP1526758A3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113093826B (en) * 2021-03-31 2022-03-25 歌尔股份有限公司 Control method and device of vibration motor, terminal equipment and storage medium

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4412106A (en) * 1977-03-24 1983-10-25 Andreas Pavel High fidelity stereophonic reproduction system
DE4237710A1 (en) * 1991-11-07 1993-05-13 Koenig Florian Improving head related sound characteristics for TV audio signal playback - using controlled audio signal processing for conversion into stereo audio signals
DE4332504A1 (en) * 1993-09-26 1995-03-30 Koenig Florian System for providing multi-channel supply to four-channel stereo headphones
JPH10215500A (en) * 1997-01-30 1998-08-11 Matsushita Electric Ind Co Ltd Multi-channel audio output circuit for television receiver

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4412106A (en) * 1977-03-24 1983-10-25 Andreas Pavel High fidelity stereophonic reproduction system
DE4237710A1 (en) * 1991-11-07 1993-05-13 Koenig Florian Improving head related sound characteristics for TV audio signal playback - using controlled audio signal processing for conversion into stereo audio signals
DE4332504A1 (en) * 1993-09-26 1995-03-30 Koenig Florian System for providing multi-channel supply to four-channel stereo headphones
JPH10215500A (en) * 1997-01-30 1998-08-11 Matsushita Electric Ind Co Ltd Multi-channel audio output circuit for television receiver

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 13 30 November 1998 (1998-11-30) *

Also Published As

Publication number Publication date
EP1526758A2 (en) 2005-04-27

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