DE3774902D1 - Automatisch gesteuerte verstaerkungseinrichtung. - Google Patents
Automatisch gesteuerte verstaerkungseinrichtung.Info
- Publication number
- DE3774902D1 DE3774902D1 DE8787200248T DE3774902T DE3774902D1 DE 3774902 D1 DE3774902 D1 DE 3774902D1 DE 8787200248 T DE8787200248 T DE 8787200248T DE 3774902 T DE3774902 T DE 3774902T DE 3774902 D1 DE3774902 D1 DE 3774902D1
- Authority
- DE
- Germany
- Prior art keywords
- automatically controlled
- controlled amplifier
- amplifier
- automatically
- controlled
- 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
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
- H04R3/02—Circuits for transducers, loudspeakers or microphones for preventing acoustic reaction, i.e. acoustic oscillatory feedback
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G5/00—Tone control or bandwidth control in amplifiers
- H03G5/16—Automatic control
- H03G5/165—Equalizers; Volume or gain control in limited frequency bands
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Control Of Amplification And Gain Control (AREA)
- Circuit For Audible Band Transducer (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8600406A NL8600406A (nl) | 1986-02-18 | 1986-02-18 | Automatisch geregeld versterkerstelsel. |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3774902D1 true DE3774902D1 (de) | 1992-01-16 |
Family
ID=19847592
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8787200248T Expired - Lifetime DE3774902D1 (de) | 1986-02-18 | 1987-02-17 | Automatisch gesteuerte verstaerkungseinrichtung. |
Country Status (5)
Country | Link |
---|---|
US (1) | US4783819A (de) |
EP (1) | EP0235848B1 (de) |
JP (1) | JPS62198298A (de) |
DE (1) | DE3774902D1 (de) |
NL (1) | NL8600406A (de) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5111506A (en) * | 1989-03-02 | 1992-05-05 | Ensonig Corporation | Power efficient hearing aid |
US5371803A (en) * | 1990-08-31 | 1994-12-06 | Bellsouth Corporation | Tone reduction circuit for headsets |
US5701352A (en) * | 1994-07-14 | 1997-12-23 | Bellsouth Corporation | Tone suppression automatic gain control for a headset |
US5596646A (en) * | 1994-11-07 | 1997-01-21 | Rocktron Corporation | Audio tape saturation simulator |
JP3152160B2 (ja) * | 1996-11-13 | 2001-04-03 | ヤマハ株式会社 | ハウリング検出防止回路及びそれを用いた拡声装置 |
JP3535957B2 (ja) * | 1997-07-29 | 2004-06-07 | パイオニア株式会社 | 雑音低減装置及び雑音低減方法 |
GB2330744B (en) * | 1997-10-24 | 2002-05-29 | Mitel Corp | Howling controller |
KR100886575B1 (ko) * | 1999-07-02 | 2009-03-05 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | 주파수 대역 선택적 오디오 전력 제어부를 갖는 확성기 보호 시스템 |
WO2003084103A1 (en) * | 2002-03-22 | 2003-10-09 | Georgia Tech Research Corporation | Analog audio enhancement system using a noise suppression algorithm |
JP4059818B2 (ja) | 2003-07-23 | 2008-03-12 | ティーオーエー株式会社 | ハウリングマージン測定装置 |
US20070071255A1 (en) * | 2003-10-24 | 2007-03-29 | Koninklijke Philips Electronics N.V. | Adaptive Sound Reproduction |
US8509450B2 (en) * | 2010-08-23 | 2013-08-13 | Cambridge Silicon Radio Limited | Dynamic audibility enhancement |
US10082488B2 (en) * | 2015-12-02 | 2018-09-25 | Butterfly Network, Inc. | Time gain compensation circuit and related apparatus and methods |
US9492144B1 (en) | 2015-12-02 | 2016-11-15 | Butterfly Network, Inc. | Multi-level pulser and related apparatus and methods |
US10187020B2 (en) | 2015-12-02 | 2019-01-22 | Butterfly Network, Inc. | Trans-impedance amplifier for ultrasound device and related apparatus and methods |
US10231713B2 (en) | 2016-09-13 | 2019-03-19 | Butterfly Network, Inc. | Analog-to-digital drive circuitry having built-in time gain compensation functionality for ultrasound applications |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1228795A (de) * | 1967-05-31 | 1971-04-21 | ||
US3605012A (en) * | 1969-07-15 | 1971-09-14 | Us Army | Noise cancellation filter system |
JPS50157002A (de) * | 1974-06-07 | 1975-12-18 | ||
US4185168A (en) * | 1976-05-04 | 1980-01-22 | Causey G Donald | Method and means for adaptively filtering near-stationary noise from an information bearing signal |
US4064462A (en) * | 1976-12-29 | 1977-12-20 | Dukane Corporation | Acoustic feedback peak elimination unit |
US4088834A (en) * | 1977-01-03 | 1978-05-09 | Thurmond George R | Feedback elimination system employing notch filter |
US4079199A (en) * | 1977-05-25 | 1978-03-14 | Patronis Jr Eugene T | Acoustic feedback detector and automatic gain control |
US4185242A (en) * | 1978-03-20 | 1980-01-22 | Bell Telephone Laboratories, Incorporated | Signal-to-noise ratio measurement of intermittent signals |
US4340780A (en) * | 1980-03-07 | 1982-07-20 | Transcale Ab | Self-correcting audio equalizer |
JPS57162593A (en) * | 1981-03-30 | 1982-10-06 | Toshiyuki Sakai | Howling preventing device |
US4602337A (en) * | 1983-02-24 | 1986-07-22 | Cox James R | Analog signal translating system with automatic frequency selective signal gain adjustment |
JPS59161995A (ja) * | 1983-03-07 | 1984-09-12 | Matsushita Electric Ind Co Ltd | ハウリング抑圧装置 |
JPH0632537B2 (ja) * | 1984-08-31 | 1994-04-27 | 松下電器産業株式会社 | ハウリング抑圧装置 |
-
1986
- 1986-02-18 NL NL8600406A patent/NL8600406A/nl not_active Application Discontinuation
-
1987
- 1987-02-17 US US07/015,453 patent/US4783819A/en not_active Expired - Fee Related
- 1987-02-17 DE DE8787200248T patent/DE3774902D1/de not_active Expired - Lifetime
- 1987-02-17 EP EP87200248A patent/EP0235848B1/de not_active Expired
- 1987-02-18 JP JP62035435A patent/JPS62198298A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
NL8600406A (nl) | 1987-09-16 |
JPS62198298A (ja) | 1987-09-01 |
US4783819A (en) | 1988-11-08 |
EP0235848B1 (de) | 1991-12-04 |
EP0235848A1 (de) | 1987-09-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3774896D1 (de) | Steilheitsverstaerker. | |
DE3750667D1 (de) | Leistungsverstärker. | |
IT8619169A0 (it) | Azolilderivati fungicidi. | |
FI882668A0 (fi) | Ex vivo-aktivering av effekterceller foer doedande av objektceller. | |
NO874749L (no) | N9-cyklopentyl-substituerte adeninderivater. | |
FI873346A (fi) | Foerfarande foer framstaellning av morfologiskt homogena former av thiazolderivat. | |
DE3777997D1 (de) | Piperidinderivate. | |
DE3774902D1 (de) | Automatisch gesteuerte verstaerkungseinrichtung. | |
DE3879600D1 (de) | Operationsverstaerker. | |
FI872856A0 (fi) | Saekerhetssits foer barn. | |
DE3761308D1 (de) | 18-phenylestrane-derivate. | |
DE3667578D1 (de) | Verstaerkeranordnung. | |
DE3778624D1 (de) | Glucosylmoranoline-derivate. | |
DE3667230D1 (de) | Verstaerkeranordnung. | |
DE68915221D1 (de) | Verstärker. | |
DE3671685D1 (de) | Verstaerkeranordnung. | |
IT8622828A0 (it) | Azolilderivati fungicidi. | |
DE3780338D1 (de) | Indenopyrimidin-derivate. | |
DE3781831D1 (de) | Aralkylimidazolderivate. | |
DE3774759D1 (de) | Alkenamid-derivate. | |
IT8660377V0 (it) | Montapanna semplificato. | |
FI874159A0 (fi) | Anordning foer tillverkning av ringformiga polymerartiklar. | |
DE3785480D1 (de) | Macrolid-derivate. | |
ATE67191T1 (de) | Imidazol-derivat. | |
DE3767538D1 (de) | Druckluftbetaetigter verstaerker. |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: PHILIPS ELECTRONICS N.V., EINDHOVEN, NL |
|
8339 | Ceased/non-payment of the annual fee |