NO117082B - - Google Patents
Download PDFInfo
- Publication number
- NO117082B NO117082B NO158114A NO15811465A NO117082B NO 117082 B NO117082 B NO 117082B NO 158114 A NO158114 A NO 158114A NO 15811465 A NO15811465 A NO 15811465A NO 117082 B NO117082 B NO 117082B
- Authority
- NO
- Norway
- Prior art keywords
- signal
- amplifier
- group
- microphone
- filter
- Prior art date
Links
- 238000000926 separation method Methods 0.000 claims description 13
- 230000000694 effects Effects 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6405564A NL6405564A (de) | 1964-05-20 | 1964-05-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO117082B true NO117082B (de) | 1969-06-30 |
Family
ID=19790109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO158114A NO117082B (de) | 1964-05-20 | 1965-05-18 |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US3403223A (de) |
| AT (1) | AT263871B (de) |
| BE (1) | BE664110A (de) |
| CH (1) | CH446442A (de) |
| DE (1) | DE1274192B (de) |
| DK (1) | DK118567B (de) |
| ES (1) | ES313062A1 (de) |
| FR (1) | FR1444200A (de) |
| GB (1) | GB1102186A (de) |
| NL (1) | NL6405564A (de) |
| NO (1) | NO117082B (de) |
| SE (1) | SE313599B (de) |
Families Citing this family (13)
| 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 (ja) * | 1979-04-26 | 1984-03-07 | 日本ビクター株式会社 | 可変指向性マイクロホン |
| US4354059A (en) * | 1979-09-11 | 1982-10-12 | Victor Company Of Japan, Ltd. | Variable-directivity microphone device |
| DE3102208C2 (de) * | 1980-01-25 | 1983-01-05 | Victor Company Of Japan, Ltd., Yokohama, Kanagawa | Mikrofonsystem mit veränderbarer Richtcharakteristik |
| US4521908A (en) * | 1982-09-01 | 1985-06-04 | Victor Company Of Japan, Limited | Phased-array sound pickup apparatus having no unwanted response pattern |
| 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 |
| WO1998046043A2 (de) * | 1997-04-10 | 1998-10-15 | Interkom Electronic Kock & Mreches Gmbh | Schallaufnahmeeinrichtung, insbesondere für eine sprechstelle |
| US7697827B2 (en) | 2005-10-17 | 2010-04-13 | Konicek Jeffrey C | User-friendlier interfaces for a camera |
| CN110049405B (zh) * | 2018-01-15 | 2022-02-18 | 厦门雅迅网络股份有限公司 | 一种兼容式车载麦克风电路 |
| CN113613120A (zh) * | 2021-01-20 | 2021-11-05 | 深圳市冠旭电子股份有限公司 | 一种混合后馈降噪电路、混合后馈降噪装置以及降噪耳机 |
Family Cites Families (4)
| 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 |
-
1964
- 1964-05-20 NL NL6405564A patent/NL6405564A/xx unknown
-
1965
- 1965-05-15 DE DEN26725A patent/DE1274192B/de not_active Withdrawn
- 1965-05-17 GB GB20738/65A patent/GB1102186A/en not_active Expired
- 1965-05-17 AT AT445865A patent/AT263871B/de active
- 1965-05-17 SE SE6420/65A patent/SE313599B/xx unknown
- 1965-05-17 DK DK247565AA patent/DK118567B/da unknown
- 1965-05-17 CH CH685065A patent/CH446442A/de unknown
- 1965-05-18 US US456768A patent/US3403223A/en not_active Expired - Lifetime
- 1965-05-18 ES ES0313062A patent/ES313062A1/es not_active Expired
- 1965-05-18 NO NO158114A patent/NO117082B/no unknown
- 1965-05-18 BE BE664110A patent/BE664110A/xx unknown
- 1965-05-20 FR FR17760A patent/FR1444200A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1102186A (en) | 1968-02-07 |
| SE313599B (de) | 1969-08-18 |
| ES313062A1 (es) | 1965-10-01 |
| BE664110A (fr) | 1965-11-18 |
| AT263871B (de) | 1968-08-12 |
| US3403223A (en) | 1968-09-24 |
| DE1274192B (de) | 1968-08-01 |
| FR1444200A (fr) | 1966-07-01 |
| CH446442A (de) | 1967-11-15 |
| DK118567B (da) | 1970-09-07 |
| NL6405564A (de) | 1965-11-22 |
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