DK204589A - SPEAKER SYSTEM - Google Patents
SPEAKER SYSTEM Download PDFInfo
- Publication number
- DK204589A DK204589A DK204589A DK204589A DK204589A DK 204589 A DK204589 A DK 204589A DK 204589 A DK204589 A DK 204589A DK 204589 A DK204589 A DK 204589A DK 204589 A DK204589 A DK 204589A
- Authority
- DK
- Denmark
- Prior art keywords
- acoustic path
- sound
- membrane
- absorbent device
- troughs
- Prior art date
Links
- 239000002250 absorbent Substances 0.000 abstract 3
- 239000012528 membrane Substances 0.000 abstract 3
- 238000009434 installation Methods 0.000 abstract 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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/30—Combinations of transducers with horns, e.g. with mechanical matching means, i.e. front-loaded horns
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
- H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
A loudspeaker installation is arranged with a loudspeaker unit 1 with a membrane and an acoustic path 5 which is situated on the front of the membrane to guide the sound waves which are emitted from the membrane. The acoustic path 5 is bordered by a sound-absorbent device 4. The space which contains the acoustic path 5 and the sound-absorbent device 4 is divided by a divider 6 which is placed in such a way that at least one part of the sound-absorbent device 4 is exposed to the acoustic path 5. By means of this arrangement resonance peaks and troughs are removed, which peaks and troughs are determined by the length of the acoustic path 5, so that flat sound pressure frequency characteristics can be achieved over a wide range of high frequency tones. <IMAGE>
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10635588 | 1988-04-28 | ||
JP63106355A JPH0775431B2 (en) | 1988-04-28 | 1988-04-28 | Speaker system |
JP63109343A JPH0775432B2 (en) | 1988-05-02 | 1988-05-02 | Speaker system |
JP10934388 | 1988-05-02 |
Publications (3)
Publication Number | Publication Date |
---|---|
DK204589D0 DK204589D0 (en) | 1989-04-27 |
DK204589A true DK204589A (en) | 1989-10-29 |
DK170195B1 DK170195B1 (en) | 1995-06-06 |
Family
ID=26446466
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK204589A DK170195B1 (en) | 1988-04-28 | 1989-04-27 | Loudspeaker installation |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0339425B1 (en) |
BR (1) | BR8901979A (en) |
DK (1) | DK170195B1 (en) |
ES (1) | ES2050178T3 (en) |
MX (1) | MX171080B (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2302231B (en) * | 1995-03-14 | 1999-01-13 | Matsushita Electric Ind Co Ltd | Speaker system |
GB2325586B (en) * | 1995-03-14 | 1999-01-13 | Matsushita Electric Ind Co Ltd | Speaker system |
DE19611999C1 (en) * | 1996-03-27 | 1997-07-17 | Henkel Kgaa | Alkoxylated fatty acid alkyl ester preparation useful e.g. in dishwashing |
US6008391A (en) * | 1997-03-17 | 1999-12-28 | Henkel Kommanditgesellschaft Auf Aktien | Process for preparing alkoxylated fatty acid alkyl esters |
DE19909272A1 (en) | 1999-03-03 | 2000-09-07 | Cognis Deutschland Gmbh | Process for the production of alkoxylated nonionic surfactants |
GB2464512B (en) * | 2008-10-16 | 2012-11-28 | Instigate Media Ltd | A sound source |
US11310587B2 (en) | 2019-10-08 | 2022-04-19 | Bose Corporation | Horn loudspeakers |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB402600A (en) * | 1931-11-27 | 1933-12-07 | Harold Lister Kirke | Improvements in or relating to loudspeakers |
GB496504A (en) * | 1937-06-25 | 1938-12-01 | Murphy Radio Ltd | Improvements in loud speakers |
GB963853A (en) * | 1961-12-29 | 1964-07-15 | Wharfedale Wireless Works Ltd | Loudspeakers |
DE1537620A1 (en) * | 1967-11-14 | 1969-12-18 | Isophon Werke Gmbh | Funnel loudspeaker assembly |
NZ225001A (en) * | 1987-06-16 | 1990-09-26 | Matsushita Electric Ind Co Ltd | Loudspeaker: reflected sound waves absorbed |
-
1989
- 1989-04-17 EP EP19890106833 patent/EP0339425B1/en not_active Expired - Lifetime
- 1989-04-17 ES ES89106833T patent/ES2050178T3/en not_active Expired - Lifetime
- 1989-04-26 MX MX1581189A patent/MX171080B/en unknown
- 1989-04-27 DK DK204589A patent/DK170195B1/en not_active IP Right Cessation
- 1989-04-27 BR BR898901979A patent/BR8901979A/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
ES2050178T3 (en) | 1994-05-16 |
DK204589D0 (en) | 1989-04-27 |
DK170195B1 (en) | 1995-06-06 |
MX171080B (en) | 1993-09-29 |
EP0339425A3 (en) | 1990-01-24 |
EP0339425B1 (en) | 1994-03-23 |
EP0339425A2 (en) | 1989-11-02 |
BR8901979A (en) | 1989-12-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
B1 | Patent granted (law 1993) | ||
PBP | Patent lapsed |
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