CN1173599C - 数字式电-声换能器 - Google Patents

数字式电-声换能器 Download PDF

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Publication number
CN1173599C
CN1173599C CNB991086511A CN99108651A CN1173599C CN 1173599 C CN1173599 C CN 1173599C CN B991086511 A CNB991086511 A CN B991086511A CN 99108651 A CN99108651 A CN 99108651A CN 1173599 C CN1173599 C CN 1173599C
Authority
CN
China
Prior art keywords
signal
film
sound
acoustic transducer
electric charge
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.)
Expired - Lifetime
Application number
CNB991086511A
Other languages
English (en)
Chinese (zh)
Other versions
CN1241107A (zh
Inventor
安野功修
大
利光平大
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of CN1241107A publication Critical patent/CN1241107A/zh
Application granted granted Critical
Publication of CN1173599C publication Critical patent/CN1173599C/zh
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R19/00—Electrostatic transducers
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/033—Headphones for stereophonic communication

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Telephone Function (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
CNB991086511A 1998-06-18 1999-06-18 数字式电-声换能器 Expired - Lifetime CN1173599C (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP171865/1998 1998-06-18
JP171865/98 1998-06-18
JP17186598A JP3553375B2 (ja) 1998-06-18 1998-06-18 防騒音型ディジタル式受話器

Publications (2)

Publication Number Publication Date
CN1241107A CN1241107A (zh) 2000-01-12
CN1173599C true CN1173599C (zh) 2004-10-27

Family

ID=15931230

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB991086511A Expired - Lifetime CN1173599C (zh) 1998-06-18 1999-06-18 数字式电-声换能器

Country Status (4)

Country Link
EP (1) EP0966178B1 (ja)
JP (1) JP3553375B2 (ja)
CN (1) CN1173599C (ja)
DE (1) DE69917531T2 (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3642460B2 (ja) * 1998-12-07 2005-04-27 松下電器産業株式会社 デジタル式送受話器

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3020247C2 (de) * 1980-05-28 1982-09-02 Franz Vertriebsgesellschaft mbH, 7634 Kippenheim Verfahren und Anordnung zur Umwandlung von Schallwellen in digitale elektrische Signale mit Hilfe von elektroakustischen Wandlern
US4922542A (en) * 1987-12-28 1990-05-01 Roman Sapiejewski Headphone comfort
DE19612068A1 (de) * 1996-03-27 1997-10-02 Neumann Gmbh Georg Verfahren und Anordnung zum Umwandeln eines akustischen Signals in ein elektrisches Signal

Also Published As

Publication number Publication date
DE69917531T2 (de) 2005-08-04
EP0966178B1 (en) 2004-05-26
DE69917531D1 (de) 2004-07-01
EP0966178A3 (en) 2001-03-21
JP3553375B2 (ja) 2004-08-11
EP0966178A2 (en) 1999-12-22
CN1241107A (zh) 2000-01-12
JP2000013890A (ja) 2000-01-14

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Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20041027