EP3292701B1 - Rundstrahlendes lautsprechersystem und zugehörige vorrichtung und verfahren - Google Patents

Rundstrahlendes lautsprechersystem und zugehörige vorrichtung und verfahren Download PDF

Info

Publication number
EP3292701B1
EP3292701B1 EP16750576.7A EP16750576A EP3292701B1 EP 3292701 B1 EP3292701 B1 EP 3292701B1 EP 16750576 A EP16750576 A EP 16750576A EP 3292701 B1 EP3292701 B1 EP 3292701B1
Authority
EP
European Patent Office
Prior art keywords
acoustic
sub
assembly
omni
pair
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.)
Active
Application number
EP16750576.7A
Other languages
English (en)
French (fr)
Other versions
EP3292701A1 (de
Inventor
Donna Marie Sullivan
Wontak Kim
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bose Corp
Original Assignee
Bose Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US15/221,906 external-priority patent/US10397696B2/en
Application filed by Bose Corp filed Critical Bose Corp
Publication of EP3292701A1 publication Critical patent/EP3292701A1/de
Application granted granted Critical
Publication of EP3292701B1 publication Critical patent/EP3292701B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • H04R1/32—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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • 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 
    • H04R1/26—Spatial arrangements of separate transducers responsive to two or more frequency ranges
    • 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 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2803—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means for loudspeaker transducers
    • 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 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
    • H04R1/2876—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding
    • H04R1/288—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding for loudspeaker transducers
    • 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
    • H04R1/323—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only for loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers

Definitions

  • Conventional acoustic deflectors in speaker systems can exhibit artifacts in the acoustic spectrum due to acoustic modes present between an acoustic driver and an acoustic deflector.
  • This disclosure relates to an acoustic deflector for equalizing the resonant response for an omni-directional speaker system.
  • the present invention relates to an omni-directional speaker system as recited in claim 1.
  • Advantageous embodiments are recited in dependent claims.
  • an omni-directional speaker system includes a deflector sub-assembly and a pair of acoustic sub-assemblies.
  • the deflector sub-assembly includes a pair of diametrically opposed acoustic deflectors.
  • Each of the acoustic sub-assemblies includes an acoustic driver for radiating acoustic energy toward an associated one of the acoustic deflectors.
  • the acoustic sub-assemblies are coupled together via the deflector sub-assembly.
  • each of the acoustic sub-assemblies includes an acoustic enclosure
  • the deflector sub-assembly is coupled to the acoustic sub-assemblies so as to enable formation of respective acoustic seals at respective junctions between associated ones of the acoustic drivers and the acoustic enclosures.
  • the pair of acoustic sub-assemblies includes a first acoustic sub-assembly.
  • the first acoustic sub-assembly includes a first acoustic driver and a first acoustic enclosure.
  • the first acoustic driver is coupled to the first acoustic enclosure via a first pair of fasteners partially forming a first acoustic seal at a junction between the first acoustic driver and the first acoustic enclosure.
  • the deflector sub-assembly is coupled to the first acoustic sub-assembly via a second pair of fasteners so as to complete the first acoustic seal.
  • each fastener of the second pair of fasteners passes through respective holes in the deflector sub-assembly and the first acoustic driver, and threadingly engages the first acoustic enclosure.
  • the pair of acoustic sub-assemblies also includes a second acoustic sub-assembly.
  • the second acoustic sub-assembly includes a second acoustic driver and a second acoustic enclosure.
  • the second acoustic driver is coupled to the second acoustic enclosure via a third pair of fasteners partially forming a second acoustic seal at a junction between the second acoustic driver and the second acoustic enclosure.
  • the deflector sub-assembly is coupled to the second acoustic sub-assembly via a fourth pair of fasteners so as to complete the second acoustic seal.
  • each fastener of the fourth pair of fasteners passes through respective holes in the second acoustic enclosure and the second acoustic driver, and threadingly engages the deflector sub-assembly.
  • the deflector sub-assembly includes a plurality of vertical legs, and the deflector sub-assembly is coupled to the acoustic sub-assemblies via the vertical legs.
  • the deflector sub-assembly is coupled to a first one of the acoustic sub-assemblies via a first diametrically opposed pair of the vertical legs, and the deflector sub-assembly is coupled to a second one of the acoustic sub-assemblies via a second diametrically opposed pair of the vertical legs.
  • the pair of diametrically opposed acoustic deflectors together define a common (shared) acoustic chamber.
  • the deflector sub-assembly includes an acoustically absorbing member disposed within the acoustic chamber.
  • the acoustically absorbing member is held in a compressed state by the pair of diametrically opposed acoustic deflectors.
  • the compression of the acoustically absorbing member changes an acoustic property of the acoustically absorbing member.
  • Another aspect provides an acoustic deflector sub-assembly that includes a pair of diametrically opposed omni-directional acoustic deflectors, and a first pair of vertical legs for mounting to a first acoustic sub-assembly such that a first one of the acoustic deflectors is arranged to deflect acoustic energy radiated from the first acoustic sub-assembly.
  • the acoustic deflector sub-assembly also includes a second pair of vertical legs for mounting to a second acoustic sub-assembly such that a second one of the acoustic deflectors is arranged to deflect acoustic energy radiated from the second acoustic sub-assembly.
  • Each of the omni-directional acoustic deflectors includes an acoustically reflective body that has a truncated conical shape including a substantially conical outer surface, a top surface, and a cone axis.
  • Each acoustically reflective body has an opening in the top surface centered on the cone axis.
  • An acoustically absorbing material may be disposed at the openings in the top surfaces of the acoustically reflective bodies.
  • the respective cone axes of the omni-directional acoustic deflectors are coaxial.
  • an acoustic deflector sub-assembly includes a pair of diametrically opposed omni-directional acoustic deflectors.
  • Each of the omni-directional acoustic deflectors includes an acoustically reflective body have a truncated conical shape including a substantially conical outer surface, a top surface and a cone axis.
  • Each acoustically reflective body having an opening in the top surface centered on the cone axis.
  • the acoustically reflective bodies together define a shared acoustic chamber that is acoustically coupled to the openings in the top surfaces of the acoustically reflective bodies.
  • the acoustically reflective bodies include recesses disposed about their respective substantially conical outer surfaces.
  • omni-directional speaker systems Multiple benefits are known for omni-directional speaker systems. These benefits include a more spacious sound image when the speaker system is placed near a boundary, such as a wall within a room, due to reflections. Another benefit is that the speaker system does not have to be oriented in a particular direction to achieve optimum high frequency coverage. This second advantage is highly desirable for mobile speaker systems where the speaker system and/or the listener may be moving.
  • FIGS. 1A and 1B are perspective and cross-sectional views, respectively, of an acoustic assembly 100 for an omni-directional speaker system.
  • the acoustic assembly includes a pair of diametrically opposing acoustic sub-assemblies 102a, 102b (collectively referenced as 102), which are coupled together via a common deflector sub-assembly 104.
  • Each of the acoustic sub-assemblies 102 includes an acoustic enclosure 106a, 106b (collectively referenced as 106) and an acoustic driver 108a, 108b (collectively referenced as 108).
  • Each acoustic enclosure 106 includes a base 110a, 110b (collectively referenced as 110) and a plurality of sidewalls 112a, 112b, (collectively referenced as 112) which extend from the base to an opposing, open end.
  • the associated acoustic driver 108 is secured to the open end such that a rear radiating surface of the driver radiates acoustic energy into the acoustic enclosure 106, and such that acoustic energy radiated from an opposing, front radiating surface of the acoustic driver 108 propagates toward the deflector sub-assembly 104.
  • the deflector sub-assembly 104 includes a pair of diametrically opposing omni-directional acoustic deflectors 114a, 114b (collectively 114). Each of the acoustic deflectors 114 has four vertical legs 116 to which a corresponding one of the acoustic sub-assemblies 102 is mounted. The acoustic sub-assemblies 102 are mounted such that the motion axes of their respective acoustic drivers 108 are coaxial.
  • Acoustic energy generated by the acoustic drivers 108 propagates toward the deflector sub-assembly 104 and is deflected into a substantially horizontal direction (i.e., a direction substantially normal to the motion axes of the acoustic drivers 108), by respective substantially conical outer surfaces of the acoustic deflectors 114.
  • a substantially horizontal direction i.e., a direction substantially normal to the motion axes of the acoustic drivers 108
  • Each opening 120 is defined by one of the acoustic sub-assemblies, a base 122 of the deflector sub-assembly 104, and a pair of the vertical legs 116.
  • These eight openings 120 are acoustic apertures which pass the horizontally propagating acoustic energy. It should be understood that the propagation of the acoustic energy in a given direction includes a spreading of the propagating acoustic energy,
  • each of the acoustic deflectors 114 has a substantially truncated conical shape.
  • the respective slopes of the conical outer surfaces, between the base and the vertex of the cone, are not constant.
  • one or both of the outer surfaces of the acoustic deflectors 114 may have a non-linear slant profile such as a parabolic profile or a profile described by a truncated hyperboloid of revolution.
  • the bodies of the acoustic deflectors 114 can be made of any suitably acoustically reflective material.
  • the bodies may be formed from plastic, stone, metal, or other rigid materials.
  • each of the omni-directional acoustic deflectors 114 includes two features which may contribute to an improvement of the acoustic spectrum.
  • the respective diameters of the openings 124 are chosen so that the resulting attenuation of the acoustic energy by the acoustic drivers 108 is limited to an acceptable level while achieving a desired level of smoothing of the acoustic spectrum.
  • the acoustically absorbing material 126 is foam (e.g., melamine foam).
  • the bodies of the acoustic deflectors 114 together form a common body cavity 128 (a/k/a acoustic chamber), which, in the illustrated example, is filled with a single volume of foam such that the foam is adjacent to, or extends into, the openings.
  • a separate foam element may be disposed at each opening so that only a portion of the body cavity 128 is occupied by foam.
  • the foam present at each of the central openings 124 is at one end of a cylindrically-shaped foam element disposed within the body cavity 128.
  • the foam element is oversized and is compressed between the bodies of the acoustic deflectors 114 to achieve the desired acoustic properties (e.g., the desired acoustic absorptivity).
  • Helmholtz resonator i.e., a shared, or dual, Helmholtz resonator
  • the second feature of the acoustic deflectors 114 that contribute to an improvement in the acoustic spectrum is the presence of recesses 130a, 130b (a/k/a collectively 130), shown as ring shaped troughs, located along the circumferences of the substantially conical outer surfaces.
  • the recesses 130 are each arranged at a circumference at a peak of the second harmonic of the resonance mode.
  • one or both of the recesses 130 may be arranged at a radius that is approximately one-half of the base radius of the cone.
  • the recesses 130 may correspond with/to features of the acoustic driver. That is the recesses may be included to accommodate movement of features of the acoustic driver (e.g., movement of a diaphragm of the acoustic driver) relative to the omni-directional acoustic deflectors.
  • FIGS. 2A through 2F illustrate a step-wise assembly of an omni-directional speaker system that includes the acoustic assembly 100.
  • the bodies of the acoustic deflectors 114 are brought together, e.g., in a welding operation, to define the body cavity 128 ( FIG. 1B ) therebetween.
  • a hot plate welding procedure is employed to form a weld seam 132 ( FIG. 1B ) that couples the deflector bodies together and acoustically seals the body cavity 128 at the junction between the two deflector bodies.
  • the weld seam 132 may be formed by a rib (e.g., a plastic rib) that is heated during a hot plate welding operation.
  • a cylindrical piece of acoustically absorbing material 126 e.g., foam
  • FIG. 2B illustrates the assembly of the first acoustic sub-assembly 102a.
  • a first end of electrical wiring 200 is passed through an aperture 202 in the first acoustic enclosure 106a, via a grommet 204, and is connected to terminals (not shown) on the first acoustic driver 108a.
  • the electrical wiring 200 provides electrical signals to the first acoustic driver 108a for driving the first acoustic driver 108a.
  • the grommet 204 helps to assure that the aperture 202 in the first acoustic enclosure 106a is acoustically sealed in the final assembly.
  • the first acoustic driver 108a is then secured to the first acoustic enclosure 106a via a pair of fasteners 206 that pass through holes in a mounting bracket of the first acoustic driver 108a and threadingly engage the first acoustic enclosure 106a.
  • the fasteners 206 may engage pre-formed threaded holes in the first acoustic enclosure 106a, or they may form threaded holes as they engage the first acoustic enclosure 106a.
  • a peripheral gasket 208 is provided at the open end of the first acoustic enclosure 106a to help provide an acoustic seal at the junction between the first acoustic driver 108a and the first acoustic enclosure 106a.
  • Assembly of the second acoustic sub-assembly 102b ( FIG. 1A ) is substantially identical to that of the first acoustic sub-assembly 102a, and, thus, is not described for the sake of conciseness.
  • the deflector sub-assembly 104 is secured to the first acoustic sub-assembly 102a via a pair of fasteners 210 which pass through holes in a first pair of diametrically opposed ones of the vertical legs 116, then pass through holes in the mounting bracket of the first acoustic driver 108a, and then threadingly engage the first acoustic enclosure 106a.
  • the fasteners 210 may engage pre-formed threaded holes in the first acoustic enclosure 106a, or they may form threaded holes as they engage the first acoustic enclosure 106a.
  • the second acoustic sub-assembly 102b is coupled to the deflector sub-assembly 104 via another pair of fasteners 212 (one shown) which pass through holes in the second acoustic enclosure 106b, then pass through holes in a mounting bracket of the second acoustic driver 108b, and then threadingly engage a second pair of diametrically opposed ones of the vertical legs 116.
  • the fasteners 212 may engage pre-formed threaded holes in the vertical legs116, or they may form threaded holes as they engage the vertical legs 116.
  • the second, free ends of the electrical wiring 200 for the acoustic drivers are attached to a printed wiring board (PWB 214), which also supports an electrical connector 216 for providing external electrical connection (e.g., to a source of audio signals (not shown)).
  • the PWB 214 is arranged adjacent to the base 110b of the second acoustic enclosure 106b.
  • a compliant member 218 e.g., a piece of foam
  • the compliant member 218 serves to bias the PWB 214 against an end cap (item 230b, FIG. 2F ) in the finished assembly.
  • a band of vibration absorbing material 220 is wrapped around each of the acoustic sub-assemblies 102, and then a hollow outer sleeve 222 is slid over the acoustic assembly 100.
  • the sleeve 222 is slid over the acoustic assembly from the second acoustic sub-assembly 102b toward the first acoustic sub-assembly 102a, such that a first recess 224 ( FIG. 3 ) formed at a first open end of the sleeve 222 comes to rest above a lip 226 formed around the base 110a of the first acoustic enclosure 106a.
  • the sleeve 222 may be formed from a rigid material, such as plastic or metal (e.g., aluminum), and includes regions 228 of perforations which align with the openings 120 in the acoustic assembly 100 to permit the passage of the acoustic energy that is radiated from the acoustic drivers 108 and deflected by the deflector sub-assembly 104.
  • the vibration absorbing material 220 helps to inhibit buzzing (undesirable noise) that may otherwise be caused by relative movement of the acoustic assembly 100 and the sleeve 222 during operation of the omni-directional speaker system 300 ( FIG.3 ).
  • first and second end caps 230a, 230b are arranged at first and second open ends of the sleeve 222, respectively, to provide a finished appearance.
  • a first end cap 230a is coupled to the base 110a of the first acoustic enclosure 106a (e.g., via adhesive such as a pressure sensitive adhesive)
  • the second end cap 230b is coupled to the sleeve 222 at the second open end of the sleeve 222 and the second acoustic enclosure 106b (e.g., via adhesive such as hot melt polyethylene).
  • the second end cap 230b includes apertures 232 to permit terminals 234 of the electrical connector 216 to pass therethrough.
  • the compliant member 218 biases the PWB 214 against the second end cap 230b to help ensure that the terminals 234 protrude through the apertures 232 a sufficient distance the enable a sufficient electrical connection and with enough pre-load to prevent buzz.
  • the assembled omni-directional speaker system 300 has a smooth outer appearance with an absence of seams along the length of the sleeve and no visible mechanical fasteners.
  • omni-directional acoustic deflectors act as an acoustic smoothing filter by providing a modified acoustic resonance volume between the acoustic driver and the acoustic deflector. It will be appreciated that adjusting the size and locations of the acoustically absorbing regions allows for the acoustic spectrum to be tuned to modify the acoustic spectrum.
  • the profile of the acoustically reflecting surface may be non-linear (i.e., vary from a perfect conical surface) and defined so as to modify the acoustic spectrum.
  • non-circularly symmetric extensions in the acoustically reflecting surface such as the radial extensions described above, can be utilized to achieve an acceptable acoustic spectrum.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Claims (11)

  1. Omnidirektionales Lautsprechersystem (100), umfassend:
    eine Deflektor-Untereinheit (104), die ein Paar gegenüberliegender omnidirektionaler akustischer Deflektoren (114a, 114b) umfasst; und
    ein Paar akustischer Untereinheiten (102a, 102b), die jede einen akustischen Treiber (108a, 108b) umfassen, der so eingerichtet ist, dass er akustische Energie zu einem zugehörigen der akustischen Deflektoren hin abstrahlt,
    wobei die akustischen Untereinheiten (102a, 102b) über die Deflektor-Untereinheit (104) miteinander gekoppelt sind;
    wobei jeder der omnidirektionalen akustischen Deflektoren (114a, 114b) einen akustisch reflektierenden Körper umfasst, der eine kegelstumpfförmige Form aufweist, die eine im Wesentlichen kegelförmige Außenfläche, eine Deckfläche und eine Kegelachse einschließt, wobei jeder akustisch reflektierende Körper eine Öffnung (124a, 124b) in der Deckfläche aufweist, die auf der Kegelachse zentriert ist,
    wobei die akustisch reflektierenden Körper zusammen eine gemeinsame akustische Kammer definieren, die akustisch mit den Öffnungen in den Deckflächen der akustisch reflektierenden Körper gekoppelt ist,
    wobei die akustisch reflektierenden Körper ringförmige Vertiefungen (130a, 130b) einschließen, die entlang von Umfängen der kegelförmigen Außenfläche angeordnet sind,
    wobei die Vertiefungen jede an einem Umfang auf einer Spitze einer zweiten Harmonischen eines Resonanzmodus eingerichtet sind, oder
    eine oder zwei der Vertiefungen jede an einem Radius eingerichtet sind, der etwa die Hälfte eines Basisradius des Kegels eines zugehörigen akustisch reflektierenden Körpers beträgt, oder
    die Vertiefungen jede so eingerichtet sind, dass sie Bewegung von Merkmalen der akustischen Treiber relativ zu den omnidirektionalen akustischen Deflektoren aufnehmen.
  2. Omnidirektionales Lautsprechersystem (100) nach Anspruch 1, wobei die Vertiefungen (130a, 130b) so eingerichtet sind, dass sie Bewegung einer Membran der akustischen Treiber relativ zu den omnidirektionalen akustischen Deflektoren aufnehmen.
  3. Omnidirektionales Lautsprechersystem nach Anspruch 1, wobei das Paar akustischer Untereinheiten (102a, 102b) eine erste akustische Untereinheit (102a) umfasst, die einen ersten akustischen Treiber (108a) und ein erstes akustisches Gehäuse (106a) umfasst, wobei der erste akustische Treiber (108a) über ein erstes Paar Befestigungen (206), die teilweise eine erste akustische Dichtung an einem Übergang zwischen dem ersten akustischen Treiber (108a) und dem ersten akustischen Gehäuse (106a) bilden, mit dem ersten akustischen Gehäuse (106a) gekoppelt ist, und wobei die Deflektor-Untereinheit (104) über ein zweites Paar Befestigungen (210) so mit der ersten akustischen Untereinheit (102a) gekoppelt ist, dass die erste akustische Dichtung vervollständigt wird.
  4. Omnidirektionales Lautsprechersystem nach Anspruch 3, wobei jede Befestigung aus dem zweiten Paar Befestigungen (210) durch jeweilige Löcher in der Deflektor-Untereinheit und dem ersten akustischen Treiber (108a) hindurchgeht und gewindemäßig in das erste akustische Gehäuse (106a) eingreift.
  5. Omnidirektionales Lautsprechersystem nach Anspruch 4, wobei das Paar akustischer Untereinheiten weiter eine zweite akustische Untereinheit (102b) umfasst, die einen zweiten akustischen Treiber (108b) und ein zweites akustisches Gehäuse (106b) umfasst, wobei der zweite akustische Treiber (108b) über ein drittes Paar Befestigungen, die teilweise eine zweite akustische Dichtung an einem Übergang zwischen dem zweiten akustischen Treiber und dem zweiten akustischen Gehäuse bilden, mit dem zweiten akustischen Gehäuse (106b) gekoppelt ist, und wobei die Deflektor-Untereinheit (104) über ein viertes Paar Befestigungen (212) so mit der zweiten akustischen Untereinheit (102b) gekoppelt ist, dass die zweite akustische Dichtung vervollständigt wird.
  6. Omnidirektionales Lautsprechersystem nach Anspruch 5, wobei jede Befestigung aus dem vierten Paar Befestigungen (212) durch jeweilige Löcher im zweiten akustischen Gehäuse (106b) und dem zweiten akustischen Treiber (108b) hindurchgeht und gewindemäßig in die Deflektor-Untereinheit (104) eingreift.
  7. Omnidirektionales Lautsprechersystem nach Anspruch 1, wobei die Deflektor-Untereinheit (104) eine Vielzahl von vertikalen Schenkeln (116) umfasst, und wobei die Deflektor-Untereinheit über die vertikalen Schenkel mit den akustischen Untereinheiten gekoppelt ist.
  8. Omnidirektionales Lautsprechersystem nach Anspruch 7, wobei die Deflektor-Untereinheit (104) über ein erstes gegenüberliegendes Paar der vertikalen Schenkel (116) mit einer ersten der akustischen Untereinheiten gekoppelt ist, und wobei die Deflektor-Untereinheit (104) über ein zweites gegenüberliegendes Paar der vertikalen Schenkel (116) mit einer zweiten der akustischen Untereinheiten gekoppelt ist.
  9. Omnidirektionales Lautsprechersystem nach Anspruch 1, wobei die Deflektor-Untereinheit (104) ein akustisch absorbierendes Glied (126) umfasst, das innerhalb der gemeinsamen akustischen Kammer angeordnet ist.
  10. Omnidirektionales Lautsprechersystem nach Anspruch 9, wobei das akustisch absorbierende Glied (126) von dem Paar gegenüberliegender omnidirektionaler akustischer Deflektoren (114a, 114b) in einem komprimierten Zustand gehalten wird.
  11. Omnidirektionales Lautsprechersystem nach Anspruch 10, wobei die Kompression des akustisch absorbierenden Glieds so konfiguriert ist, dass sie eine akustische Eigenschaft des akustisch absorbierenden Glieds verändert.
EP16750576.7A 2016-07-28 2016-07-29 Rundstrahlendes lautsprechersystem und zugehörige vorrichtung und verfahren Active EP3292701B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US15/221,906 US10397696B2 (en) 2015-01-31 2016-07-28 Omni-directional speaker system and related devices and methods
PCT/US2016/044680 WO2018022086A1 (en) 2016-07-28 2016-07-29 Omni-directional speaker system and related devices and methods

Publications (2)

Publication Number Publication Date
EP3292701A1 EP3292701A1 (de) 2018-03-14
EP3292701B1 true EP3292701B1 (de) 2019-05-22

Family

ID=56682273

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16750576.7A Active EP3292701B1 (de) 2016-07-28 2016-07-29 Rundstrahlendes lautsprechersystem und zugehörige vorrichtung und verfahren

Country Status (4)

Country Link
EP (1) EP3292701B1 (de)
JP (1) JP6530496B2 (de)
CN (1) CN107980224B (de)
WO (1) WO2018022086A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110493686B (zh) * 2018-05-15 2021-03-30 群光电子股份有限公司 复合式喇叭模块与喇叭装置
CN110896515B (zh) * 2018-09-12 2021-12-07 宁波升亚电子有限公司 音效再现方法和音效收听方法
CN111586537B (zh) * 2019-02-19 2021-08-24 纬创资通股份有限公司 具有可替换式导音组件的扬声器

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59121991U (ja) * 1983-02-03 1984-08-16 パイオニア株式会社 無指向性スピ−カシステム
US6257365B1 (en) * 1996-08-30 2001-07-10 Mediaphile Av Technologies, Inc. Cone reflector/coupler speaker system and method
DE19716315C2 (de) * 1997-04-18 2002-06-13 Heinz Juergen Augustin Omnidirektionale Lautsprecheranlage
JPH11234784A (ja) * 1998-02-10 1999-08-27 Matsushita Electric Ind Co Ltd 超指向性スピーカ
US6026928A (en) * 1999-04-06 2000-02-22 Maharaj; Ashok A. Apparatus and method for reduced distortion loudspeakers
US8189841B2 (en) * 2008-03-27 2012-05-29 Bose Corporation Acoustic passive radiating
SG170641A1 (en) * 2009-10-30 2011-05-30 Dream Infotainment Resources Pte Ltd Omnidirectional speaker
DE102011016326B4 (de) * 2011-04-01 2016-12-15 Kerstin Brachaus-Mechow Lautsprecheranordnung
SG2013094784A (en) * 2013-12-20 2015-07-30 Dream Audiolab Pte Ltd Improved omnidirectional speaker with soundwave deflectors

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
JP6530496B2 (ja) 2019-06-12
JP2018530171A (ja) 2018-10-11
EP3292701A1 (de) 2018-03-14
CN107980224A (zh) 2018-05-01
CN107980224B (zh) 2021-02-26
WO2018022086A1 (en) 2018-02-01

Similar Documents

Publication Publication Date Title
US10911865B2 (en) Omni-directional speaker system and related devices and methods
US9883283B2 (en) Acoustic deflector for omni-directional speaker system
US5446792A (en) Reflection-type speaker apparatus
US4227051A (en) Loud speaker and enclosure system
US6031920A (en) Coaxial dual-parabolic sound lens speaker system
EP3292701B1 (de) Rundstrahlendes lautsprechersystem und zugehörige vorrichtung und verfahren
EP3383060B1 (de) Lautsprechervorrichtung
EP1827056A1 (de) Lautsprechersystem mit breiter Richtwirkung
US20100272295A1 (en) Speaker device having directivity adjustment panel
JPH05268690A (ja) 広角度の指向性を有するスピーカ装置
CN110870328A (zh) 声音系统的电声换能器装置
EP4246999A1 (de) Audiogerät
WO2018049378A1 (en) Loudspeaker system
US10405086B2 (en) Microphone cavity
CN107295441B (zh) 音箱腔体及具有所述音箱腔体的音箱
CN110012397B (zh) 一种扬声器
US11082760B2 (en) Vibration cancelling speaker arrangement
JP3701779B2 (ja) コアキシャルスピーカ
US7130438B2 (en) Acoustic enclosure for single audio transducer
EP1509063A1 (de) Schallerzeugungseinrichtung mit einem Array zur Ablenkung von Geräuschen hoher Frequenz
JPH04160999A (ja) スピーカシステム
JP2020178146A (ja) 天井埋込型スピーカー
JP2020178147A (ja) 天井埋込型スピーカー

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20170727

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20181120

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

RIC1 Information provided on ipc code assigned before grant

Ipc: H04R 1/32 20060101ALI20190213BHEP

Ipc: H04R 1/28 20060101AFI20190213BHEP

Ipc: H04R 1/02 20060101ALI20190213BHEP

Ipc: H04R 1/26 20060101ALN20190213BHEP

Ipc: H04R 1/34 20060101ALI20190213BHEP

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
INTG Intention to grant announced

Effective date: 20190304

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SULLIVAN, DONNA MARIE

Inventor name: KIM, WONTAK

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602016014391

Country of ref document: DE

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1137544

Country of ref document: AT

Kind code of ref document: T

Effective date: 20190615

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20190522

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190522

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190522

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190522

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190522

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190522

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190522

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190522

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190922

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190822

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190823

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190522

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190522

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190822

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1137544

Country of ref document: AT

Kind code of ref document: T

Effective date: 20190522

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190522

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190522

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190522

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190522

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190522

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190522

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602016014391

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190522

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190522

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190522

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190522

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20190731

26N No opposition filed

Effective date: 20200225

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190522

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190731

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190731

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190729

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190522

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190729

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190522

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190922

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20160729

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190522

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190522

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20230621

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20230620

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20230620

Year of fee payment: 8