IN2014DN03351A - - Google Patents

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Publication number
IN2014DN03351A
IN2014DN03351A IN3351DEN2014A IN2014DN03351A IN 2014DN03351 A IN2014DN03351 A IN 2014DN03351A IN 3351DEN2014 A IN3351DEN2014 A IN 3351DEN2014A IN 2014DN03351 A IN2014DN03351 A IN 2014DN03351A
Authority
IN
India
Prior art keywords
digital signal
digital
signal
converter
serial
Prior art date
Application number
Inventor
Akira Yasuda
Jun Ichi Okamura
Original Assignee
Trigence Semiconductor Inc
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 Trigence Semiconductor Inc filed Critical Trigence Semiconductor Inc
Publication of IN2014DN03351A publication Critical patent/IN2014DN03351A/en

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217—Class D power amplifiers; Switching amplifiers
    • H03F3/2175—Class D power amplifiers; Switching amplifiers using analogue-digital or digital-analogue conversion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/005—Details of transducers, loudspeakers or microphones using digitally weighted transducing elements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/60—Information retrieval; Database structures therefor; File system structures therefor of audio data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/86—Arrangements characterised by the broadcast information itself
    • H04H20/88—Stereophonic broadcast systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R27/00—Public address systems
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H04R9/063—Loudspeakers using a plurality of acoustic drivers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/331—Sigma delta modulation being used in an amplifying circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2209/00—Details of transducers of the moving-coil, moving-strip, or moving-wire type covered by H04R9/00 but not provided for in any of its subgroups
    • H04R2209/026—Transducers having separately controllable opposing diaphragms, e.g. for ring-tone and voice
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2209/00—Details of transducers of the moving-coil, moving-strip, or moving-wire type covered by H04R9/00 but not provided for in any of its subgroups
    • H04R2209/041—Voice coil arrangements comprising more than one voice coil unit on the same bobbin
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
    • H04R2460/03—Aspects of the reduction of energy consumption in hearing devices

Abstract

Provided is a digital acoustic system comprising: a ΔΣ modulator that modulates a digital input signal and outputs a digital signal; a post filter that is connected to the ΔΣ modulator and which performs mismatch shaping to convert the digital signal; a parallel serial converter that converts the digital signal converted by the post filter into a digital signal which is serially transmitted; a serial parallel converter that restores the digital signal converted by the parallel serial converter; and a drive circuit which receives the digital signal restored by the serial parallel converter and drives drive elements to convert the signal into an analog audio signal.
IN3351DEN2014 2011-10-25 2012-10-25 IN2014DN03351A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011233937 2011-10-25
PCT/JP2012/077570 WO2013062038A1 (en) 2011-10-25 2012-10-25 Digital acoustic system

Publications (1)

Publication Number Publication Date
IN2014DN03351A true IN2014DN03351A (en) 2015-06-26

Family

ID=48167864

Family Applications (1)

Application Number Title Priority Date Filing Date
IN3351DEN2014 IN2014DN03351A (en) 2011-10-25 2012-10-25

Country Status (7)

Country Link
US (1) US9793868B2 (en)
EP (1) EP2782361A4 (en)
JP (1) JP6169971B2 (en)
KR (1) KR20140079400A (en)
CN (1) CN103891312B (en)
IN (1) IN2014DN03351A (en)
WO (1) WO2013062038A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10638234B2 (en) * 2016-04-15 2020-04-28 Dai-Ichi Seiko Co., Ltd. Speaker system
EP3355590A1 (en) * 2017-01-26 2018-08-01 Vestel Elektronik Sanayi ve Ticaret A.S. Loudspeaker, apparatus comprising the same, and method of operating a loudspeaker

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3341566B2 (en) * 1996-02-15 2002-11-05 ソニー株式会社 Signal transmission method and apparatus, and signal reproduction method and apparatus
JP3415398B2 (en) * 1997-08-07 2003-06-09 パイオニア株式会社 Audio signal processing device
JP4061791B2 (en) * 1999-10-29 2008-03-19 ヤマハ株式会社 Digital data playback device
JP2002176362A (en) * 2000-12-06 2002-06-21 Sony Corp Method and device for transmitting digital signal
US7058463B1 (en) * 2000-12-29 2006-06-06 Nokia Corporation Method and apparatus for implementing a class D driver and speaker system
WO2005002200A2 (en) * 2003-06-13 2005-01-06 Nielsen Media Research, Inc. Methods and apparatus for embedding watermarks
JP2005311847A (en) * 2004-04-23 2005-11-04 Nippon Telegr & Teleph Corp <Ntt> Data communicating method, data transmitter, data receiver and data transmission program
JP2006197152A (en) * 2005-01-13 2006-07-27 Sharp Corp Bone conduction speaker device
JP4707742B2 (en) 2006-05-21 2011-06-22 株式会社 Ｔｒｉｇｅｎｃｅ Ｓｅｍｉｃｏｎｄｕｃｔｏｒ Digital-analog converter
JP2009010820A (en) * 2007-06-29 2009-01-15 Sony Corp Storage device, storage control method, and program
JP5552620B2 (en) * 2008-06-16 2014-07-16 株式会社 Ｔｒｉｇｅｎｃｅ Ｓｅｍｉｃｏｎｄｕｃｔｏｒ A car equipped with a digital speaker driving device and a centralized control device
CN101944360A (en) * 2009-07-03 2011-01-12 邱剑 Method and terminal for convenient use
JP5748657B2 (en) * 2009-12-16 2015-07-15 株式会社 Ｔｒｉｇｅｎｃｅ Ｓｅｍｉｃｏｎｄｕｃｔｏｒ Acoustic system

Also Published As

Publication number Publication date
US20140236332A1 (en) 2014-08-21
JP6169971B2 (en) 2017-07-26
KR20140079400A (en) 2014-06-26
CN103891312A (en) 2014-06-25
EP2782361A1 (en) 2014-09-24
US9793868B2 (en) 2017-10-17
EP2782361A4 (en) 2015-07-08
WO2013062038A1 (en) 2013-05-02
JPWO2013062038A1 (en) 2015-04-02
CN103891312B (en) 2017-09-01

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