DE102008013627B4 - speaker - Google Patents
speaker Download PDFInfo
- Publication number
- DE102008013627B4 DE102008013627B4 DE200810013627 DE102008013627A DE102008013627B4 DE 102008013627 B4 DE102008013627 B4 DE 102008013627B4 DE 200810013627 DE200810013627 DE 200810013627 DE 102008013627 A DE102008013627 A DE 102008013627A DE 102008013627 B4 DE102008013627 B4 DE 102008013627B4
- Authority
- DE
- Germany
- Prior art keywords
- opening
- housing
- membrane
- speaker
- directional
- 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.)
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- 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
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- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
Richtlautsprecher mit einem Gehäuse, wobei das Gehäuse eine erste Öffnung aufweist, in deren Bereich eine schwingende, angetriebene Hauptmembran angeordnet ist, wobei das Gehäuse wenigstens eine zweite, nicht durch eine Membran verschlossene Öffnung aufweist, wobei zwischen der ersten Öffnung und der wenigstens einen zweiten Öffnung eine Hilfsmembran angeordnet ist, die einen Innenraum des Gehäuses unterteilt, wobei das Gehäuse mit Ausnahme der ersten und der wenigstens einen zweiten Öffnung geschlossen ausgebildet ist, dadurch gekennzeichnet, dass dass die Hilfsmembran und die wenigstens eine zweite Öffnung so ausgebildet sind, dass der Verlauf des akustischen Widerstands der wenigstens einen zweiten Öffnung invers zum Verlauf des akustischen Widerstands der Hilfsmembran ist, und dass der Lautsprecher als Richtlautsprecher ausgebildet ist.A directional speaker with a housing, the housing having a first opening, in the region of a vibrating, driven main diaphragm is arranged, wherein the housing has at least a second, not closed by a membrane opening, wherein between the first opening and the at least one second opening an auxiliary membrane is arranged, which subdivides an interior of the housing, wherein the housing is formed closed except the first and the at least one second opening, characterized in that the auxiliary membrane and the at least one second opening are formed so that the course of Acoustic resistance of the at least one second opening is inverse to the course of the acoustic resistance of the auxiliary membrane, and that the speaker is designed as a directional speaker.
Description
Die Erfindung betrifft einen Richtlautsprecher. Richtlautsprecher sind bekannt z. B. von der Firma, Siemens, Phillips, Steffens. Diese Lautsprecher funktionieren nach dem Prinzip der Schallabstrahlung durch einfache Öffnungen (Steffens, Siemens, Phillips) oder durch Kammern gesteuerte Phasenverschiebungen oder Schallverzögerungen der rückwärtig abgestrahlten Schallwellen Fa. ME-Geithain.The invention relates to a directional speaker. Directional speakers are known z. From the company, Siemens, Phillips, Steffens. These loudspeakers operate according to the principle of sound emission through simple openings (Steffens, Siemens, Phillips) or chamber-controlled phase shifts or sound delays of the rear-radiated sound waves Fa. ME-Geithain.
Die einfachen Schallöffnungen (Siemes/Phillips/Steffens-Elektro-Akustik weisen den Nachteil auf, bei zunehmender Wellenlänge der Betriebsfrequenzen auch einen zunehmenden akustischen Kurzschluss und damit eine Verringerung des abstrahlbaren Schalldrucks aufzuweisen. Die Konstruktiornen von ME-Geithain sind aufgrund der Abmessungen in einem eingeschränkten langweiligeren Ton-Spektrum effektiv.The simple sound holes (Siemes / Phillips / Steffens electro-acoustics have the drawback that with increasing wavelength of the operating frequencies also an increasing acoustic short circuit and thus a reduction of the radiated sound pressure exhibit.The constructors of ME-Geithain are due to the dimensions in a limited boring sound spectrum effectively.
Alle Verfahren haben zur Aufgabe 180° phasenverschobene Schallwellen im hinteren Bereich einer Lautsprecherbox mit den direkt abgestrahlten, frontseitigen und kugelförmig abgestrahlten Schallwellen einer Lautsprecherbox (Druckstrahler) zur Auslöschung zu bringen. Dies gelingt mehr oder weniger erfolgreich und selten über ein breites Tonspektrum. Vor allem Lautsprecher mit sehr kleinen Abmessungen (Steffens) sind uneffektiv bei tiefen Frequenzen. Bei tiefen Frequenezen arbeiten die Lautsprecher dann als offene Dipole, wodurch der Membranhub mit abnehmender Frequenz schnell unkontrollierbar wird (Strahlugnswiderstand nimmt ab). Große Gehäuselautsprecher (ME-Geithain) erzwingen lange Laufzeiten aufgund des großen Gehäuseumfangs und arbeiten daher ausschließlich im tieffrequenten Frequenzbereich wirkungsvoll.All methods have for the task 180 ° out of phase sound waves in the rear of a speaker with the directly emitted, front and spherical radiated sound waves of a speaker (pressure lamps) to extinguish. This succeeds more or less successfully and rarely over a broad spectrum of sound. Especially speakers with very small dimensions (Steffens) are ineffective at low frequencies. At low frequencies, the loudspeakers then work as open dipoles, as a result of which the diaphragm stroke quickly becomes uncontrollable with decreasing frequency (beam resistance decreases). Large case loudspeakers (ME-Geithain) force long runtimes due to the large housing circumference and therefore work effectively only in the low-frequency frequency range.
Aus der Patentschrift
Aus der Offenlegungsschrift
Aufgabe der vorliegenden Erfindung ist es, mit einfachen Mitteln die vorgenannten Nachteile zu vermeiden und den nutzbaren Frequenzbereich von Tiefen bis mittlere Frequenzen zu erweitem.The object of the present invention is to avoid the abovementioned disadvantages with simple means and to expand the usable frequency range from low to medium frequencies.
Zur Lösung der Aufgabe ist Lautsprechen mit den Merkmalen von Anspruch 1 vorgesehen.To solve the problem, speaker with the features of claim 1 is provided.
Die Hilfsmembran (
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008013627.1A DE102008013627B8 (en) | 2008-03-11 | 2008-03-11 | speaker |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008013627.1A DE102008013627B8 (en) | 2008-03-11 | 2008-03-11 | speaker |
Publications (3)
Publication Number | Publication Date |
---|---|
DE102008013627A1 DE102008013627A1 (en) | 2009-09-17 |
DE102008013627B4 true DE102008013627B4 (en) | 2015-04-23 |
DE102008013627B8 DE102008013627B8 (en) | 2015-06-03 |
Family
ID=40952947
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102008013627.1A Active DE102008013627B8 (en) | 2008-03-11 | 2008-03-11 | speaker |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102008013627B8 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102422653B (en) | 2009-03-20 | 2014-09-17 | 麦耶声音实验室股份有限公司 | Loudspeaker with passive low frequency directional control |
US11102570B2 (en) | 2019-06-11 | 2021-08-24 | Bose Corporation | Auto-configurable bass loudspeaker |
US11153680B2 (en) | 2020-02-13 | 2021-10-19 | Bose Corporation | Stackable loudspeakers |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5929393A (en) * | 1996-07-12 | 1999-07-27 | Jeter, Jr.; Charles W. | Speaker cabinet with sounding board |
US20060078144A1 (en) * | 2004-10-07 | 2006-04-13 | Stiles Enrique M | Compound-driven augmented passive radiator |
-
2008
- 2008-03-11 DE DE102008013627.1A patent/DE102008013627B8/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5929393A (en) * | 1996-07-12 | 1999-07-27 | Jeter, Jr.; Charles W. | Speaker cabinet with sounding board |
US20060078144A1 (en) * | 2004-10-07 | 2006-04-13 | Stiles Enrique M | Compound-driven augmented passive radiator |
Also Published As
Publication number | Publication date |
---|---|
DE102008013627A1 (en) | 2009-09-17 |
DE102008013627B8 (en) | 2015-06-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8122 | Nonbinding interest in granting licences declared | ||
8127 | New person/name/address of the applicant |
Owner name: BARTH, HELMUT, 73269 HOCHDORF, DE |
|
R081 | Change of applicant/patentee |
Owner name: BARTH ACOUSTIC SYSTEMS GMBH, DE Free format text: FORMER OWNER: BARTH, HELMUT, 73269 HOCHDORF, DE Effective date: 20120724 Owner name: BARTH ACOUSTIC GMBH, DE Free format text: FORMER OWNER: BARTH, HELMUT, 73269 HOCHDORF, DE Effective date: 20120724 |
|
R012 | Request for examination validly filed |
Effective date: 20130628 |
|
R016 | Response to examination communication | ||
R018 | Grant decision by examination section/examining division | ||
R087 | Non-binding licensing interest withdrawn | ||
R020 | Patent grant now final | ||
R081 | Change of applicant/patentee |
Owner name: BARTH ACOUSTIC SYSTEMS GMBH, DE Free format text: FORMER OWNER: BARTH ACOUSTIC GMBH, 73249 WERNAU, DE |
|
R082 | Change of representative |
Representative=s name: PATENTANWAELTE RUFF, WILHELM, BEIER, DAUSTER &, DE |