EP0732034A1 - Perfectionnement a l'interface "amplificateur de puissance-enceinte acoustique" - Google Patents
Perfectionnement a l'interface "amplificateur de puissance-enceinte acoustique"Info
- Publication number
- EP0732034A1 EP0732034A1 EP95902811A EP95902811A EP0732034A1 EP 0732034 A1 EP0732034 A1 EP 0732034A1 EP 95902811 A EP95902811 A EP 95902811A EP 95902811 A EP95902811 A EP 95902811A EP 0732034 A1 EP0732034 A1 EP 0732034A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- conductor
- amplifier
- improvement
- filters
- negative pole
- 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.)
- Granted
Links
- 239000004020 conductor Substances 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008451 emotion Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 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
- H04R3/14—Cross-over networks
-
- 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
Definitions
- the present invention relates to an improvement to the interface "Power amplifier-speaker”.
- High fidelity loudspeakers generally have several channels to which a certain frequency band is assigned to reproduce. To do this, it is necessary to have filters on the enclosure supply circuit consisting of capacitors, reactors and resistors. While some speakers only have filter components in series, most, requiring more complex filtering, also have them in parallel.
- the diagram in Figure “la” represents such filtering on a channel of a multi-channel enclosure; this known arrangement comprises a loudspeaker "Hp" supplied by a circuit comprising two conductors 1 and 2, the conductor 1 being connected to the "+” pole of the amplifier via the conductor "LA” and the conductor 2 to pole "-” via the conductor "LR".
- the conductor 1 comprises one or more filters "F” arranged upstream of the loudspeaker "Hp" and, between the conductors 1 and 2, one or more filters “Z” such as Zl, Z2, Z3.
- LA and LR only channels, but each channel is wired and connected to (or to) amplifiers according to a “la” or “lb” type diagram.
- the applicant has carried out an assembly simulating a very small distance (a few centimeters) between the amplifier and the speakers. Indeed, by removing all the filtering from the enclosure and connecting it directly to the amplifier by a conductor as short as possible (a few centimeters), the desired experiment is carried out. In this case, the "Hp" speakers remain in place while the length of the "LR” and "L” conductors is reduced to a few centimeters.
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)
- Circuit For Audible Band Transducer (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9314369A FR2713431B1 (fr) | 1993-12-01 | 1993-12-01 | Perfectionnement à l'interface "Amplificateur de puissance-enceinte acoustique". |
| FR9314369 | 1993-12-01 | ||
| PCT/FR1994/001393 WO1995015667A1 (fr) | 1993-12-01 | 1994-11-30 | Perfectionnement a l'interface 'amplificateur de puissance-enceinte acoustique' |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0732034A1 true EP0732034A1 (fr) | 1996-09-18 |
| EP0732034B1 EP0732034B1 (fr) | 1997-09-03 |
Family
ID=9453410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95902811A Expired - Lifetime EP0732034B1 (fr) | 1993-12-01 | 1994-11-30 | Perfectionnement a l'interface "amplificateur de puissance-enceinte acoustique" |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5822441A (fr) |
| EP (1) | EP0732034B1 (fr) |
| DE (1) | DE69405409T2 (fr) |
| FR (1) | FR2713431B1 (fr) |
| WO (1) | WO1995015667A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5880141A (en) * | 1995-06-07 | 1999-03-09 | Sugen, Inc. | Benzylidene-Z-indoline compounds for the treatment of disease |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2182631A1 (fr) * | 1972-04-27 | 1973-12-14 | Denise Francois | |
| US4031318A (en) * | 1975-11-21 | 1977-06-21 | Innovative Electronics, Inc. | High fidelity loudspeaker system |
| US4100380A (en) * | 1976-03-12 | 1978-07-11 | Federal Signal Corporation | Supervisory circuit for monitoring speaker coils |
| US4229619A (en) * | 1977-11-01 | 1980-10-21 | Victor Company Of Japan, Limited | Method and apparatus for driving a multi way speaker system |
| IT1243159B (it) * | 1990-11-08 | 1994-05-24 | Sonus Faber Srl | Dispositivo di filtraggio per altoparlanti per alte frequenze |
-
1993
- 1993-12-01 FR FR9314369A patent/FR2713431B1/fr not_active Expired - Fee Related
-
1994
- 1994-11-30 US US08/652,538 patent/US5822441A/en not_active Expired - Fee Related
- 1994-11-30 WO PCT/FR1994/001393 patent/WO1995015667A1/fr not_active Ceased
- 1994-11-30 EP EP95902811A patent/EP0732034B1/fr not_active Expired - Lifetime
- 1994-11-30 DE DE69405409T patent/DE69405409T2/de not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9515667A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US5822441A (en) | 1998-10-13 |
| WO1995015667A1 (fr) | 1995-06-08 |
| DE69405409D1 (de) | 1997-10-09 |
| EP0732034B1 (fr) | 1997-09-03 |
| FR2713431B1 (fr) | 1996-02-16 |
| FR2713431A1 (fr) | 1995-06-09 |
| DE69405409T2 (de) | 1998-03-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| 17P | Request for examination filed |
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| 17Q | First examination report despatched |
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