AT263871B - Microphone combination with an amplifier circuit, consisting of two microphone groups, which are connected to the amplifier circuit with opposite polarity - Google Patents

Microphone combination with an amplifier circuit, consisting of two microphone groups, which are connected to the amplifier circuit with opposite polarity

Info

Publication number
AT263871B
AT263871B AT445865A AT445865A AT263871B AT 263871 B AT263871 B AT 263871B AT 445865 A AT445865 A AT 445865A AT 445865 A AT445865 A AT 445865A AT 263871 B AT263871 B AT 263871B
Authority
AT
Austria
Prior art keywords
amplifier circuit
microphone
opposite polarity
groups
combination
Prior art date
Application number
AT445865A
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
Application granted granted Critical
Publication of AT263871B publication Critical patent/AT263871B/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)
AT445865A 1964-05-20 1965-05-17 Microphone combination with an amplifier circuit, consisting of two microphone groups, which are connected to the amplifier circuit with opposite polarity AT263871B (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
AT263871B true AT263871B (en) 1968-08-12

Family

ID=19790109

Family Applications (1)

Application Number Title Priority Date Filing Date
AT445865A AT263871B (en) 1964-05-20 1965-05-17 Microphone combination with an amplifier circuit, consisting of two microphone groups, which are connected to the amplifier circuit with opposite polarity

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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4521908A (en) * 1982-09-01 1985-06-04 Victor Company Of Japan, Limited Phased-array sound pickup apparatus having no unwanted response pattern

Families Citing this family (11)

* 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
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
DE59801138D1 (en) * 1997-04-10 2001-09-06 Interkom Electronic Kock & Mre SOUND RECORDING DEVICE, IN PARTICULAR FOR AN INTERCOM
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

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4521908A (en) * 1982-09-01 1985-06-04 Victor Company Of Japan, Limited Phased-array sound pickup apparatus having no unwanted response pattern
AT384140B (en) * 1982-09-01 1987-10-12 Victor Company Of Japan SOUND RECORDING DEVICE

Also Published As

Publication number Publication date
US3403223A (en) 1968-09-24
CH446442A (en) 1967-11-15
NO117082B (en) 1969-06-30
DE1274192B (en) 1968-08-01
FR1444200A (en) 1966-07-01
DK118567B (en) 1970-09-07
ES313062A1 (en) 1965-10-01
BE664110A (en) 1965-11-18
NL6405564A (en) 1965-11-22
SE313599B (en) 1969-08-18
GB1102186A (en) 1968-02-07

Similar Documents

Publication Publication Date Title
AT263871B (en) Microphone combination with an amplifier circuit, consisting of two microphone groups, which are connected to the amplifier circuit with opposite polarity
AT239345B (en) Electroacoustic transducer combined with electronic device
CH436922A (en) Long hole drill
AT243854B (en) Amplifier with high input resistance
BR6459225D0 (en) ELECTRONIC CONNECTION
NL141406B (en) CLASSROOM EQUIPMENT.
DK112351B (en) Sprayer.
DK133441B (en) Connecting plate.
DE1917455U (en) RESISTANCE SOLDER.
FR3840M (en) Substituted chlorothioxanthenes.
DK111096B (en) Electrical resistance.
NL144737B (en) SYSTEM WITH OSCILLOGRAPHIC BACKGROUND.
DK119740B (en) Acaricide.
DE1917592U (en) TEACHING EQUIPMENT.
FR1342735A (en) connecting element
FR1543173A (en) Very low amplitude current amplifier with very high input impedance
ES120854Y (en) PERFECTED SCHOOL MICROSCOPE.
ES101418Y (en) PERFECTED T-SHIRT-POLO.
ES122768Y (en) PERFECTED BOARD.
ES103242Y (en) Perfected doll
ES97658Y (en) Perfected doll
DK104488C (en) Acaricide.
ES126177Y (en) PERFECTED SCHOOL PUPPET.
DE1917332U (en) WALLPAPER TRACK.
DE1917593U (en) TEACHING EQUIPMENT.