CH446442A - Sound recording device - Google Patents

Sound recording device

Info

Publication number
CH446442A
CH446442A CH685065A CH685065A CH446442A CH 446442 A CH446442 A CH 446442A CH 685065 A CH685065 A CH 685065A CH 685065 A CH685065 A CH 685065A CH 446442 A CH446442 A CH 446442A
Authority
CH
Switzerland
Prior art keywords
recording device
sound recording
sound
recording
Prior art date
Application number
CH685065A
Other languages
German (de)
Inventor
Kleis Derk
Hermanus Iding Wilhelmus
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Publication of CH446442A publication Critical patent/CH446442A/en

Links

Classifications

    • 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
    • H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
    • 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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical 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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/406—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers microphones
    • 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
    • H04R19/04—Microphones
    • 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
    • H04R3/005—Circuits for transducers, loudspeakers or microphones for combining the signals of two or more microphones

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • General Health & Medical Sciences (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
CH685065A 1964-05-20 1965-05-17 Sound recording device CH446442A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6405564A NL6405564A (en) 1964-05-20 1964-05-20

Publications (1)

Publication Number Publication Date
CH446442A true CH446442A (en) 1967-11-15

Family

ID=19790109

Family Applications (1)

Application Number Title Priority Date Filing Date
CH685065A CH446442A (en) 1964-05-20 1965-05-17 Sound recording device

Country Status (12)

Country Link
US (1) US3403223A (en)
AT (1) AT263871B (en)
BE (1) BE664110A (en)
CH (1) CH446442A (en)
DE (1) DE1274192B (en)
DK (1) DK118567B (en)
ES (1) ES313062A1 (en)
FR (1) FR1444200A (en)
GB (1) GB1102186A (en)
NL (1) NL6405564A (en)
NO (1) NO117082B (en)
SE (1) SE313599B (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4334740A (en) * 1978-09-12 1982-06-15 Polaroid Corporation Receiving system having pre-selected directional response
JPS5910119B2 (en) * 1979-04-26 1984-03-07 日本ビクター株式会社 variable directional microphone
US4354059A (en) * 1979-09-11 1982-10-12 Victor Company Of Japan, Ltd. Variable-directivity microphone device
US4399327A (en) * 1980-01-25 1983-08-16 Victor Company Of Japan, Limited Variable directional microphone system
DE3331440C2 (en) * 1982-09-01 1987-04-23 Victor Company Of Japan, Ltd., Yokohama, Kanagawa Phased-controlled sound pickup arrangement with essentially elongated arrangement of microphones
US4696043A (en) * 1984-08-24 1987-09-22 Victor Company Of Japan, Ltd. Microphone apparatus having a variable directivity pattern
US4742548A (en) * 1984-12-20 1988-05-03 American Telephone And Telegraph Company Unidirectional second order gradient microphone
US5193117A (en) * 1989-11-27 1993-03-09 Matsushita Electric Industrial Co., Ltd. Microphone apparatus
US5715319A (en) * 1996-05-30 1998-02-03 Picturetel Corporation Method and apparatus for steerable and endfire superdirective microphone arrays with reduced analog-to-digital converter and computational requirements
ATE203869T1 (en) 1997-04-10 2001-08-15 Interkom Electronic Kock & Mre SOUND RECORDING DEVICE, PARTICULARLY FOR AN INTERCOM STATION
US7697827B2 (en) 2005-10-17 2010-04-13 Konicek Jeffrey C User-friendlier interfaces for a camera
CN110049405B (en) * 2018-01-15 2022-02-18 厦门雅迅网络股份有限公司 Compatible vehicle-mounted microphone circuit
WO2021087377A1 (en) * 2019-11-01 2021-05-06 Shure Acquisition Holdings, Inc. Proximity microphone
CN113613120A (en) * 2021-01-20 2021-11-05 深圳市冠旭电子股份有限公司 Mixed feedback noise reduction circuit, mixed feedback noise reduction device and noise reduction earphone

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2305599A (en) * 1941-04-08 1942-12-22 S N Shure Conversion of wave motion into electrical energy
US2301744A (en) * 1941-05-31 1942-11-10 Rca Corp Electroacoustical signal translating apparatus
US2810786A (en) * 1950-06-12 1957-10-22 Siemens Ag Directional microphone system
US3204031A (en) * 1961-08-29 1965-08-31 Akg Akustische Kino Geraete Moving-coil microphone arrangement

Also Published As

Publication number Publication date
DK118567B (en) 1970-09-07
DE1274192B (en) 1968-08-01
FR1444200A (en) 1966-07-01
SE313599B (en) 1969-08-18
BE664110A (en) 1965-11-18
AT263871B (en) 1968-08-12
US3403223A (en) 1968-09-24
NO117082B (en) 1969-06-30
NL6405564A (en) 1965-11-22
GB1102186A (en) 1968-02-07
ES313062A1 (en) 1965-10-01

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