ATE495625T1 - Mikrophon mit einem integralen mehrpegel- quantisierer und einbit-umsetzungsmitteln - Google Patents

Mikrophon mit einem integralen mehrpegel- quantisierer und einbit-umsetzungsmitteln

Info

Publication number
ATE495625T1
ATE495625T1 AT04762899T AT04762899T ATE495625T1 AT E495625 T1 ATE495625 T1 AT E495625T1 AT 04762899 T AT04762899 T AT 04762899T AT 04762899 T AT04762899 T AT 04762899T AT E495625 T1 ATE495625 T1 AT E495625T1
Authority
AT
Austria
Prior art keywords
microphone
digital
level quantizer
bit converter
integral multi
Prior art date
Application number
AT04762899T
Other languages
English (en)
Inventor
Jens Poulsen
Original Assignee
Epcos Pte 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 Epcos Pte Ltd filed Critical Epcos Pte Ltd
Application granted granted Critical
Publication of ATE495625T1 publication Critical patent/ATE495625T1/de

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/3002—Conversion to or from differential modulation
    • H03M7/3004—Digital delta-sigma modulation
    • H03M7/3015—Structural details of digital delta-sigma modulators
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/04—Structural association of microphone with electric circuitry therefor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/3002—Conversion to or from differential modulation
    • H03M7/3004—Digital delta-sigma modulation
    • H03M7/3015—Structural details of digital delta-sigma modulators
    • H03M7/3031—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path
    • H03M7/3033—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path the modulator having a higher order loop filter in the feedforward path, e.g. with distributed feedforward inputs
    • H03M7/3035—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path the modulator having a higher order loop filter in the feedforward path, e.g. with distributed feedforward inputs with provisions for rendering the modulator inherently stable, e.g. by restricting the swing within the loop, by removing part of the zeroes using local feedback loops, by positioning zeroes outside the unit circle causing the modulator to operate in a chaotic regime
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Electric hearing aids
    • H04R25/50—Customised settings for obtaining desired overall acoustical characteristics
    • H04R25/505—Customised settings for obtaining desired overall acoustical characteristics using digital signal processing

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
AT04762899T 2003-11-24 2004-10-08 Mikrophon mit einem integralen mehrpegel- quantisierer und einbit-umsetzungsmitteln ATE495625T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US52503903P 2003-11-24 2003-11-24
PCT/DK2004/000680 WO2005009072A2 (en) 2003-11-24 2004-10-08 Microphone comprising integral multi-level quantizer and single-bit conversion means

Publications (1)

Publication Number Publication Date
ATE495625T1 true ATE495625T1 (de) 2011-01-15

Family

ID=34079506

Family Applications (1)

Application Number Title Priority Date Filing Date
AT04762899T ATE495625T1 (de) 2003-11-24 2004-10-08 Mikrophon mit einem integralen mehrpegel- quantisierer und einbit-umsetzungsmitteln

Country Status (6)

Country Link
US (1) US7630504B2 (de)
EP (1) EP1690437B1 (de)
CN (1) CN1879446B (de)
AT (1) ATE495625T1 (de)
DE (1) DE602004031044D1 (de)
WO (1) WO2005009072A2 (de)

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CN104796145A (zh) * 2015-04-23 2015-07-22 西安电子科技大学 一种高精度低失真数模转换器
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Also Published As

Publication number Publication date
WO2005009072A3 (en) 2005-03-24
EP1690437B1 (de) 2011-01-12
CN1879446A (zh) 2006-12-13
WO2005009072A2 (en) 2005-01-27
DE602004031044D1 (de) 2011-02-24
EP1690437A2 (de) 2006-08-16
CN1879446B (zh) 2011-02-16
US7630504B2 (en) 2009-12-08
US20070127761A1 (en) 2007-06-07

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