JPH11501191A - オーディオ増幅器 - Google Patents
オーディオ増幅器Info
- Publication number
- JPH11501191A JPH11501191A JP9523463A JP52346397A JPH11501191A JP H11501191 A JPH11501191 A JP H11501191A JP 9523463 A JP9523463 A JP 9523463A JP 52346397 A JP52346397 A JP 52346397A JP H11501191 A JPH11501191 A JP H11501191A
- Authority
- JP
- Japan
- Prior art keywords
- audio signal
- audio
- resistor
- signal
- amplifier
- 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.)
- Pending
Links
- 230000005236 sound signal Effects 0.000 claims abstract description 57
- 230000003321 amplification Effects 0.000 claims abstract description 7
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 2
- 239000003990 capacitor Substances 0.000 description 36
- 239000004065 semiconductor Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
- H03F3/183—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
- H03F3/187—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only in integrated circuits
-
- 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
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Amplifiers (AREA)
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.オーディオ信号を制御する回路を有するオーディオ増幅器において、前記回 路は、オーディオ信号の振幅が限界値を越えたとき、多くともある時間の間、オ ーディオ信号のある高周波数レンジをオーディオ信号の残りのレンジに比べて付 加的に増幅する増幅手段を有することを特徴とするオーディオ増幅器。 2.請求項1記載のオーディオ増幅器において、前記高周波数レンジは、2kH z以上の周波数を持つオーディオ信号成分を含むことを特徴とするオーディオ増 幅器。 3.請求項1または2記載のオーディオ増幅器において、前記増幅手段は、前記 高周波数レンジを前記残りのレンジに比べて6dBまで付加的に増幅することを 特徴とするオーディオ増幅器。 4.請求項1,2または3記載のオーディオ増幅器において、前記増幅手段が前 記高周波数レンジを付加的に増幅する時間は、ほぼ5msであることを特徴とす るオーディオ増幅器。 5.請求項1〜4のいずれか一項記載のオーディオ増幅器を有する再生システム 。 6.オーディオ信号の振幅が限界値を越えたとき、多くともある時間の間、オー ディオ信号のある高周波数レンジをオーディオ信号の残りのレンジに比べて付加 的に増幅する増幅手段を有することを特徴とするオーディオ信号を制御する回路 。 7.オーディオ信号の振幅が限界値を越えたとき、多くともある時間の間、オー ディオ信号のある高周波数レンジをオーディオ信号の残りのレンジに比べて付加 的に増幅することを特徴とするオーディオ信号を制御する方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP95203605 | 1995-12-22 | ||
NL95203605.1 | 1995-12-22 | ||
PCT/IB1996/001342 WO1997023948A1 (en) | 1995-12-22 | 1996-12-04 | Audio amplifier |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH11501191A true JPH11501191A (ja) | 1999-01-26 |
Family
ID=8220992
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9523463A Pending JPH11501191A (ja) | 1995-12-22 | 1996-12-04 | オーディオ増幅器 |
Country Status (6)
Country | Link |
---|---|
US (1) | US5789977A (ja) |
EP (1) | EP0811271B1 (ja) |
JP (1) | JPH11501191A (ja) |
KR (1) | KR100457840B1 (ja) |
DE (1) | DE69616290T2 (ja) |
WO (1) | WO1997023948A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018060887A (ja) * | 2016-10-04 | 2018-04-12 | ローム株式会社 | 半導体集積回路装置及びそのスクリーニング方法並びにオペアンプ |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002050976A (ja) * | 2000-08-07 | 2002-02-15 | Sony Corp | アンテナユニットおよび受信機 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3605042A (en) * | 1969-12-22 | 1971-09-14 | Gen Electric | Treble control circuit |
US3750044A (en) * | 1972-05-22 | 1973-07-31 | Intern Radio & Electronics Cor | Graphic equalizer circuit |
US4076959A (en) * | 1976-10-08 | 1978-02-28 | General Motors Corporation | Volume, tone and balance control for multi-channel audio systems |
US4467287A (en) * | 1982-06-04 | 1984-08-21 | Dbx, Inc. | Signal expander |
US4539526A (en) * | 1983-01-31 | 1985-09-03 | Dbx, Inc. | Adaptive signal weighting system |
EP0208474A3 (en) * | 1985-07-05 | 1988-08-31 | Harman International Industries, Incorporated | Automotive sound system |
SE450613B (sv) * | 1986-03-20 | 1987-07-06 | Goran Hahne | Forfarande och kretsanordning for att forbettra frekvensatergivningen hos en audio-basforsterkare |
US4982435A (en) * | 1987-04-17 | 1991-01-01 | Sanyo Electric Co., Ltd. | Automatic loudness control circuit |
JPH03188707A (ja) * | 1989-12-19 | 1991-08-16 | Pioneer Electron Corp | 音響再生装置 |
NL9200237A (nl) * | 1992-02-07 | 1993-09-01 | Novanex Automation Nv | Niveaugestuurde toonregeling. |
DK168681B1 (da) * | 1992-03-02 | 1994-05-16 | Bang & Olufsen As | Højttaler med midler til frekvensafhængig amplituderegulering |
-
1996
- 1996-12-04 DE DE69616290T patent/DE69616290T2/de not_active Expired - Fee Related
- 1996-12-04 WO PCT/IB1996/001342 patent/WO1997023948A1/en active IP Right Grant
- 1996-12-04 EP EP96938426A patent/EP0811271B1/en not_active Expired - Lifetime
- 1996-12-04 KR KR1019970705905A patent/KR100457840B1/ko not_active IP Right Cessation
- 1996-12-04 JP JP9523463A patent/JPH11501191A/ja active Pending
- 1996-12-16 US US08/767,732 patent/US5789977A/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018060887A (ja) * | 2016-10-04 | 2018-04-12 | ローム株式会社 | 半導体集積回路装置及びそのスクリーニング方法並びにオペアンプ |
Also Published As
Publication number | Publication date |
---|---|
US5789977A (en) | 1998-08-04 |
EP0811271A1 (en) | 1997-12-10 |
DE69616290D1 (de) | 2001-11-29 |
DE69616290T2 (de) | 2002-07-18 |
EP0811271B1 (en) | 2001-10-24 |
KR100457840B1 (ko) | 2005-04-06 |
KR19980702505A (ko) | 1998-07-15 |
WO1997023948A1 (en) | 1997-07-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7221226B2 (en) | Amplifying apparatus with automatic level controller | |
US20120321104A1 (en) | Automatic gain control of amplifier by dynamic suppressing and output control at multiple stages | |
US5554959A (en) | Linear power amplifier with a pulse density modulated switching power supply | |
US4912424A (en) | Audio amplifier with voltage limiting | |
US7092533B1 (en) | BTL amplifier apparatus | |
JP2019193265A (ja) | 高性能オーディオアンプの安定化 | |
JPH07147525A (ja) | 電力増幅器用の歪制限増幅器 | |
JP2000106511A (ja) | パワーアンプic | |
JPH11501191A (ja) | オーディオ増幅器 | |
US5220613A (en) | Audio amplifier circuit | |
US2468205A (en) | Volume controlled sound reinforcement system | |
US20190131947A1 (en) | Audio circuit | |
JP3074231B2 (ja) | オーディオ機器のagc回路 | |
JPH06101659B2 (ja) | コンプレツサ | |
US6665408B1 (en) | Dynamic bass control circuit with variable cut-off frequency | |
US7460674B2 (en) | Audio effector circuit | |
US3189841A (en) | Hearing aid automatic gain control system | |
US20090284313A1 (en) | Audio amplifier | |
EP0328180A1 (en) | Amplifier arrangement with output-swing limitation | |
JP3530326B2 (ja) | 増幅装置 | |
JPS6048609A (ja) | 自動レベル調整回路 | |
JPH10335961A (ja) | 低音域増幅装置 | |
JP4031051B2 (ja) | 増幅回路配置 | |
JPH0343804B2 (ja) | ||
JP3322555B2 (ja) | 電子ボリューム回路 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20031203 |
|
A72 | Notification of change in name of applicant |
Free format text: JAPANESE INTERMEDIATE CODE: A721 Effective date: 20031203 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20060725 |
|
A601 | Written request for extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A601 Effective date: 20061019 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20061031 |
|
A602 | Written permission of extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A602 Effective date: 20061204 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20061219 |