DE69227681D1 - Anordnung zur Anhebung der Bassfrequenz eines Audiosignals - Google Patents
Anordnung zur Anhebung der Bassfrequenz eines AudiosignalsInfo
- Publication number
- DE69227681D1 DE69227681D1 DE69227681T DE69227681T DE69227681D1 DE 69227681 D1 DE69227681 D1 DE 69227681D1 DE 69227681 T DE69227681 T DE 69227681T DE 69227681 T DE69227681 T DE 69227681T DE 69227681 D1 DE69227681 D1 DE 69227681D1
- Authority
- DE
- Germany
- Prior art keywords
- bass
- components
- audio signal
- enhancement
- levels
- 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
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G5/00—Tone control or bandwidth control in amplifiers
- H03G5/16—Automatic control
- H03G5/18—Automatic control in untuned amplifiers
- H03G5/22—Automatic control in untuned amplifiers having semiconductor devices
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
- H03G9/02—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers
- H03G9/025—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers frequency-dependent volume compression or expansion, e.g. multiple-band systems
Landscapes
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
- Circuit For Audible Band Transducer (AREA)
- Control Of Amplification And Gain Control (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US92337392A | 1992-07-31 | 1992-07-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69227681D1 true DE69227681D1 (de) | 1999-01-07 |
DE69227681T2 DE69227681T2 (de) | 1999-06-10 |
Family
ID=25448580
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69227681T Expired - Lifetime DE69227681T2 (de) | 1992-07-31 | 1992-08-10 | Anordnung zur Anhebung der Bassfrequenz eines Audiosignals |
Country Status (5)
Country | Link |
---|---|
US (1) | US5359665A (de) |
EP (1) | EP0583492B1 (de) |
JP (1) | JPH06164271A (de) |
AT (1) | ATE173866T1 (de) |
DE (1) | DE69227681T2 (de) |
Families Citing this family (45)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08237800A (ja) * | 1995-02-27 | 1996-09-13 | Matsushita Electric Ind Co Ltd | 低音増強回路 |
US6023513A (en) * | 1996-01-11 | 2000-02-08 | U S West, Inc. | System and method for improving clarity of low bandwidth audio systems |
US6335973B1 (en) | 1996-01-11 | 2002-01-01 | Qwest Communications International Inc. | System and method for improving clarity of audio systems |
JP3107006B2 (ja) * | 1996-09-30 | 2000-11-06 | ヤマハ株式会社 | 音場拡大器 |
US6792119B1 (en) | 1997-05-05 | 2004-09-14 | Koninklijke Philips Electronics N.V. | Audio system |
AU1072099A (en) * | 1997-11-17 | 1999-06-07 | Srs Labs, Inc | Low-frequency audio simulation system |
US6285767B1 (en) * | 1998-09-04 | 2001-09-04 | Srs Labs, Inc. | Low-frequency audio enhancement system |
JP3296311B2 (ja) | 1998-12-25 | 2002-06-24 | ヤマハ株式会社 | 音響装置 |
DE19928420A1 (de) | 1999-06-23 | 2000-12-28 | Micronas Gmbh | Verfahren zur Verarbeitung eines Audiosignals |
US7466829B1 (en) | 1999-08-24 | 2008-12-16 | Logitech Europe S.A. | Dynamic bass equalization with modified sallen-key high pass filter |
US7031474B1 (en) | 1999-10-04 | 2006-04-18 | Srs Labs, Inc. | Acoustic correction apparatus |
DE19955696A1 (de) | 1999-11-18 | 2001-06-13 | Micronas Gmbh | Vorrichtung zur Erzeugung von Oberwellen in einem Audiosignal |
US7277767B2 (en) * | 1999-12-10 | 2007-10-02 | Srs Labs, Inc. | System and method for enhanced streaming audio |
US6728721B1 (en) * | 2000-06-23 | 2004-04-27 | Microsoft Corporation | System and method for maintaining a user's state within a database table |
US7016509B1 (en) * | 2000-09-08 | 2006-03-21 | Harman International Industries, Inc. | System and method for varying low audio frequencies inversely with audio signal level |
SE0004479D0 (sv) | 2000-12-05 | 2000-12-05 | Ericsson Telefon Ab L M | Method and arrangement relating to electronic compensation |
GB0105975D0 (en) * | 2001-03-10 | 2001-04-25 | Central Research Lab Ltd | A method of modifying low frequency components of a digital audio signal |
JP2005136647A (ja) * | 2003-10-30 | 2005-05-26 | New Japan Radio Co Ltd | 低音ブースト回路 |
KR101120550B1 (ko) * | 2004-01-13 | 2012-03-09 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | 오디오 신호 개선 |
US8054993B1 (en) | 2004-03-13 | 2011-11-08 | Harman International Industries, Incorporated | System for automatic compensation of low frequency audio based on human loudness perceptual models |
US8050434B1 (en) | 2006-12-21 | 2011-11-01 | Srs Labs, Inc. | Multi-channel audio enhancement system |
EP2139264B1 (de) * | 2007-03-20 | 2014-10-08 | NEC Corporation | Akustisches verarbeitungssystem und verfahren für ein elektronisches gerät und mobiltelefon-endgerät |
US8130980B2 (en) * | 2007-06-21 | 2012-03-06 | Creative Technology Ltd | Automatic gain control circuit for volume control and corresponding method for volume control |
US8582784B2 (en) | 2007-09-03 | 2013-11-12 | Am3D A/S | Method and device for extension of low frequency output from a loudspeaker |
US8275152B2 (en) * | 2007-09-21 | 2012-09-25 | Microsoft Corporation | Dynamic bass boost filter |
US8992238B2 (en) | 2010-07-12 | 2015-03-31 | Ferno-Washington, Inc. | Mounting system having a mounting plate with mounting studs and electrical contacts |
EP2798737B1 (de) | 2011-12-27 | 2018-10-10 | Dts Llc | Bassverstärkungssystem |
US9944217B2 (en) | 2013-02-11 | 2018-04-17 | Ferno-Washington, Inc. | Equipment mounting system |
BR112015019242A2 (pt) | 2013-02-11 | 2020-01-28 | Ferno Washington | suporte de equipamento |
US10307313B2 (en) | 2013-02-11 | 2019-06-04 | Ferno-Washington, Inc. | Equipment mounting system |
US9060223B2 (en) | 2013-03-07 | 2015-06-16 | Aphex, Llc | Method and circuitry for processing audio signals |
US9247342B2 (en) | 2013-05-14 | 2016-01-26 | James J. Croft, III | Loudspeaker enclosure system with signal processor for enhanced perception of low frequency output |
WO2014190140A1 (en) | 2013-05-23 | 2014-11-27 | Alan Kraemer | Headphone audio enhancement system |
US10398207B2 (en) | 2014-02-11 | 2019-09-03 | Ferno-Washington, Inc. | Crash-ready, portable, compartmentalization device |
US10398203B2 (en) | 2014-02-11 | 2019-09-03 | Ferno-Washington, Inc. | Crash-ready, portable, compartmentalization device |
US11083265B2 (en) | 2014-02-11 | 2021-08-10 | Ferno-Washington, Inc. | Magnetic pouch attachment mechanism with crash stable locking teeth |
SG10201708460RA (en) | 2014-07-18 | 2017-11-29 | Ferno-Washington Inc | A crash-ready, portable, compartmentalization device |
GB2549810B (en) * | 2016-04-29 | 2020-08-19 | Cirrus Logic Int Semiconductor Ltd | Audio signal processing |
WO2017202460A1 (en) | 2016-05-25 | 2017-11-30 | Huawei Technologies Co., Ltd. | Audio signal processing stage, audio signal processing apparatus and audio signal processing method |
US10034092B1 (en) | 2016-09-22 | 2018-07-24 | Apple Inc. | Spatial headphone transparency |
US11361745B2 (en) | 2019-09-27 | 2022-06-14 | Apple Inc. | Headphone acoustic noise cancellation and speaker protection |
US11166099B2 (en) * | 2019-09-27 | 2021-11-02 | Apple Inc. | Headphone acoustic noise cancellation and speaker protection or dynamic user experience processing |
US11206004B1 (en) | 2020-09-16 | 2021-12-21 | Apple Inc. | Automatic equalization for consistent headphone playback |
US11355096B1 (en) | 2020-09-16 | 2022-06-07 | Apple Inc. | Adaptive feedback processing for consistent headphone acoustic noise cancellation |
US11688383B2 (en) | 2021-08-27 | 2023-06-27 | Apple Inc. | Context aware compressor for headphone audio feedback path |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3127476A (en) * | 1964-03-31 | david | ||
US2408692A (en) * | 1942-04-29 | 1946-10-01 | Rca Corp | Signaling system |
US2379714A (en) * | 1942-05-14 | 1945-07-03 | Rca Corp | Audio transmission network |
US3281533A (en) * | 1963-09-03 | 1966-10-25 | Inter Aural Res Inc | Stereophonic sound system |
US3539725A (en) * | 1968-07-12 | 1970-11-10 | Ibm | Automatic frequency shaping network |
JPS574492Y2 (de) * | 1972-05-13 | 1982-01-27 | ||
JPS5723279B2 (de) * | 1972-06-03 | 1982-05-18 | ||
US3805177A (en) * | 1972-11-24 | 1974-04-16 | Gte Sylvania Inc | Amplifier circuit having variable automatic gain control |
US4150253A (en) * | 1976-03-15 | 1979-04-17 | Inter-Technology Exchange Ltd. | Signal distortion circuit and method of use |
US4182930A (en) * | 1978-03-10 | 1980-01-08 | Dbx Inc. | Detection and monitoring device |
JPS5545112A (en) * | 1978-09-22 | 1980-03-29 | Sony Corp | Signal transmitter |
US4249042A (en) * | 1979-08-06 | 1981-02-03 | Orban Associates, Inc. | Multiband cross-coupled compressor with overshoot protection circuit |
US4467287A (en) * | 1982-06-04 | 1984-08-21 | Dbx, Inc. | Signal expander |
JPS59105707A (ja) * | 1982-12-08 | 1984-06-19 | Matsushita Electric Ind Co Ltd | 音響効果装置 |
US4982435A (en) * | 1987-04-17 | 1991-01-01 | Sanyo Electric Co., Ltd. | Automatic loudness control circuit |
US5023490A (en) * | 1989-06-21 | 1991-06-11 | General Electric Company | Analog signal compression circuit |
KR910007982Y1 (ko) * | 1989-09-19 | 1991-10-10 | 삼성전자 주식회사 | 중저음 레벨 제어회로 |
SE465144B (sv) * | 1990-06-26 | 1991-07-29 | Ericsson Ge Mobile Communicat | Saett och anordning foer behandling av en analog signal |
-
1992
- 1992-08-10 EP EP92113605A patent/EP0583492B1/de not_active Expired - Lifetime
- 1992-08-10 AT AT92113605T patent/ATE173866T1/de not_active IP Right Cessation
- 1992-08-10 DE DE69227681T patent/DE69227681T2/de not_active Expired - Lifetime
-
1993
- 1993-07-27 JP JP5184612A patent/JPH06164271A/ja active Pending
- 1993-11-26 US US08/157,430 patent/US5359665A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0583492B1 (de) | 1998-11-25 |
JPH06164271A (ja) | 1994-06-10 |
US5359665A (en) | 1994-10-25 |
ATE173866T1 (de) | 1998-12-15 |
DE69227681T2 (de) | 1999-06-10 |
EP0583492A1 (de) | 1994-02-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
R071 | Expiry of right |
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