WO2005081576B1 - Loudspeaker surround system - Google Patents
Loudspeaker surround systemInfo
- Publication number
- WO2005081576B1 WO2005081576B1 PCT/DK2005/000109 DK2005000109W WO2005081576B1 WO 2005081576 B1 WO2005081576 B1 WO 2005081576B1 DK 2005000109 W DK2005000109 W DK 2005000109W WO 2005081576 B1 WO2005081576 B1 WO 2005081576B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- loudspeaker
- bass
- sound
- centre
- cabinet
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
- H04R2499/10—General applications
- H04R2499/15—Transducers incorporated in visual displaying devices, e.g. televisions, computer displays, laptops
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Stereophonic System (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
A loudspeaker surround system to be used in connection with a TV and including at least one left loudspeaker (2), at least one right loudspeaker (3) and a centre loud speaker (4), where said centre loudspeaker is divided into a high and intermediate frequency loudspeaker as well as a bass loudspeaker. The high and intermediate frequency loudspeakers are according to the invention arranged on top of the TV while the bass loudspeaker is arranged and/or coupled in such a manner that the sound from said bass loudspeaker is delayed relative to the sound from the high and inter mediate frequency loudspeakers, said bass loudspeaker for instance being arranged behind said TV. In this manner the so-called 'law of the first appearing wave front' is utilized. The latter is of importance in the frequency area in which both cabinets emits the same frequencies, because then the listener believes that all the sound in the frequency area in question originates from the location where the first sound burst was transmitted although the first sound is weaker than the latest sound.
Claims
1. A loudspeaker surround system to be used in connection with a TN and including at least one left loudspeaker, at least one right loudspeaker and a centre loudspeaker, where said centre loudspeaker is divided into a high and intermediate fre- quency loudspeaker as well as a bass loudspeaker, characterised in that the high and intermediate frequency loudspeaker is arranged on top of the TN or is built into said TN while the bass loudspeaker is arranged and/or coupled in such a manner that the sound from the bass loudspeaker is delayed relative to the sound from the high and intermediate frequency loudspeaker for instance by said bass loudspeaker being arranged behind the TN so as to employ the law ofthe first appearing wave.
2. A loudspeaker system according to claim 1, characterised in that the bass cabinet is arranged at least approximately 30 cm behind the high and intermediate tone cabinet.
3. A loudspeaker system according to claim 1, characterised in that the delay of the signal from the bass cabinet is provided by means of a delay circuit in the supply lines to said bass cabinet (4b).
4. A loudspeaker system according to claim 3, characterised in that the delay circuit provides a delay of approximately 2 ms.
5. A loudspeaker system according to any of the preceding claims, characterised in that an already existing filter assists in delaying the signal from the bass cabinet (4b).
6. A loudspeaker system according to any of the preceding claims, characterised in that the phase conditions can be adjusted by altering the low-pass filtering in the low- frequency cabinet.
7. A centre loudspeaker forming part of a loudspeaker surround system to be used in connection with a TN and including at least one left loudspeaker, at least one right loudspeaker and a centre loudspeaker, where said centre loudspeaker is divided into a high and intermediate frequency loudspeaker as well as a bass loudspeaker, characterised in that the high and intermediate frequency loudspeaker is arranged on top of the TN or is built into said TN while the bass loudspeaker is arranged and/or optionally coupled in such a manner that the sound from the bass loudspeaker is delayed relative to the sound from the high and intermediate frequency loudspeaker for instance by said bass loudspeaker being arranged behind the TN.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DKPA200400262 | 2004-02-20 | ||
| DK200400262A DK200400262A (en) | 2004-02-20 | 2004-02-20 | Speaker surround system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2005081576A1 WO2005081576A1 (en) | 2005-09-01 |
| WO2005081576B1 true WO2005081576B1 (en) | 2005-09-22 |
Family
ID=34878003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DK2005/000109 WO2005081576A1 (en) | 2004-02-20 | 2005-02-18 | Loudspeaker surround system |
Country Status (2)
| Country | Link |
|---|---|
| DK (1) | DK200400262A (en) |
| WO (1) | WO2005081576A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110099351A (en) * | 2019-04-01 | 2019-08-06 | 中车青岛四方机车车辆股份有限公司 | A kind of sound field back method, device and system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0040281A1 (en) * | 1980-05-20 | 1981-11-25 | Lady Bea Enterprises, Inc. | Loudspeaker and enclosure system with digital encoding phase shifted crossover network and self contained digital power drive system, and a modular method of utilizing moulded inserts |
| JPS59201600A (en) * | 1983-04-28 | 1984-11-15 | Mitsubishi Electric Corp | Color television receiver incorporating sound multiplex |
| US5222145A (en) * | 1992-04-08 | 1993-06-22 | Culver Electronic Sales, Inc. | Dual-chamber multi-channel speaker for surround sound stereo audio systems |
| US5754664A (en) * | 1993-09-09 | 1998-05-19 | Prince Corporation | Vehicle audio system |
-
2004
- 2004-02-20 DK DK200400262A patent/DK200400262A/en not_active Application Discontinuation
-
2005
- 2005-02-18 WO PCT/DK2005/000109 patent/WO2005081576A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110099351A (en) * | 2019-04-01 | 2019-08-06 | 中车青岛四方机车车辆股份有限公司 | A kind of sound field back method, device and system |
Also Published As
| Publication number | Publication date |
|---|---|
| DK200400262A (en) | 2005-08-21 |
| WO2005081576A1 (en) | 2005-09-01 |
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