DE602004031044D1 - Mikrophon mit einem integralen mehrpegel-quantisierer und einbit-umsetzungsmitteln - Google Patents

Mikrophon mit einem integralen mehrpegel-quantisierer und einbit-umsetzungsmitteln

Info

Publication number
DE602004031044D1
DE602004031044D1 DE602004031044T DE602004031044T DE602004031044D1 DE 602004031044 D1 DE602004031044 D1 DE 602004031044D1 DE 602004031044 T DE602004031044 T DE 602004031044T DE 602004031044 T DE602004031044 T DE 602004031044T DE 602004031044 D1 DE602004031044 D1 DE 602004031044D1
Authority
DE
Germany
Prior art keywords
microphone
bit
improvers
digital
level quantizer
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.)
Active
Application number
DE602004031044T
Other languages
English (en)
Inventor
Jens Kristian Poulsen
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.)
Epcos Pte Ltd
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
Publication of DE602004031044D1 publication Critical patent/DE602004031044D1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00Circuits for transducers, loudspeakers or microphones
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03MCODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00Conversion 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
    • H03M7/30Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/3002Conversion to or from differential modulation
    • H03M7/3004Digital delta-sigma modulation
    • H03M7/3015Structural details of digital delta-sigma modulators
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/02Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/04Structural association of microphone with electric circuitry therefor
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03MCODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00Conversion 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
    • H03M7/30Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/3002Conversion to or from differential modulation
    • H03M7/3004Digital delta-sigma modulation
    • H03M7/3015Structural details of digital delta-sigma modulators
    • H03M7/3031Structural 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
    • H03M7/3033Structural 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
    • H03M7/3035Structural 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/50Customised settings for obtaining desired overall acoustical characteristics
    • H04R25/505Customised settings for obtaining desired overall acoustical characteristics using digital signal processing
DE602004031044T 2003-11-24 2004-10-08 Mikrophon mit einem integralen mehrpegel-quantisierer und einbit-umsetzungsmitteln Active DE602004031044D1 (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
DE602004031044D1 true DE602004031044D1 (de) 2011-02-24

Family

ID=34079506

Family Applications (1)

Application Number Title Priority Date Filing Date
DE602004031044T Active DE602004031044D1 (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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CN107221335B (zh) * 2017-05-27 2020-07-14 大连理工大学 一种监控音频信号的数字化装置和方法
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Also Published As

Publication number Publication date
ATE495625T1 (de) 2011-01-15
CN1879446B (zh) 2011-02-16
CN1879446A (zh) 2006-12-13
WO2005009072A3 (en) 2005-03-24
US20070127761A1 (en) 2007-06-07
WO2005009072A2 (en) 2005-01-27
EP1690437B1 (de) 2011-01-12
US7630504B2 (en) 2009-12-08
EP1690437A2 (de) 2006-08-16

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