WO2006030760A1 - スピーカシステム - Google Patents
スピーカシステム Download PDFInfo
- Publication number
- WO2006030760A1 WO2006030760A1 PCT/JP2005/016806 JP2005016806W WO2006030760A1 WO 2006030760 A1 WO2006030760 A1 WO 2006030760A1 JP 2005016806 W JP2005016806 W JP 2005016806W WO 2006030760 A1 WO2006030760 A1 WO 2006030760A1
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- WO
- WIPO (PCT)
- Prior art keywords
- diaphragm
- speaker system
- edge
- shape
- passive radiator
- Prior art date
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- 230000005855 radiation Effects 0.000 claims abstract description 16
- 230000005484 gravity Effects 0.000 claims description 35
- 230000002093 peripheral effect Effects 0.000 claims description 25
- NUFNQYOELLVIPL-UHFFFAOYSA-N acifluorfen Chemical compound C1=C([N+]([O-])=O)C(C(=O)O)=CC(OC=2C(=CC(=CC=2)C(F)(F)F)Cl)=C1 NUFNQYOELLVIPL-UHFFFAOYSA-N 0.000 claims 1
- 238000005096 rolling process Methods 0.000 description 39
- 230000000694 effects Effects 0.000 description 12
- 239000000463 material Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000005259 measurement Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000007717 exclusion Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000002194 synthesizing effect Effects 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
- 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
- H04R1/2807—Enclosures comprising vibrating or resonating arrangements
- H04R1/283—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm
- H04R1/2834—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm 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
- H04R1/34—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
- H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
- H04R2499/10—General applications
- H04R2499/13—Acoustic transducers and sound field adaptation in vehicles
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/16—Mounting or tensioning of diaphragms or cones
- H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
- H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands
Definitions
- the present invention relates to a speaker system, and more particularly to a passive-bracketer-type speaker system in which distortion in the bass range is reduced.
- FIG. 21 is a structural cross-sectional view of the main part of the speaker system disclosed in Patent Document 1.
- 1 is a cabinet
- 2 is a driving speaker unit mounted inside cabinet 1
- 3 is a first passive radiator mounted in cabinet 1
- 4 is a first
- the second passive radiator is attached to the cabinet 1 so as to face the passive radiator
- 5 is an internal space of the cabinet 1 to which the first passive radiator 3 and the second passive radiator 4 are attached.
- the passive radiator does not have a driving system such as a voice coil or a magnetic circuit as a speaker unit, the non-linearity of the support system is a major cause of distortion.
- Speaker In designing a knit consideration must be given to stably vibrate the voice coil so that the voice coil does not contact and break the magnetic gap of the magnetic circuit, but in designing a passive radiator. Since there is no drive system such as a voice coil or a magnetic circuit, such consideration should be considered only to improve the linearity of the supporting force of the supporting system.
- the bass regeneration limit of the nose brace is determined by the acoustic antiresonance of the weight of the nose brace oscillation system and the stiffness of the air inside the cabinet. At this time, the stiffness of the passive radiator support system needs to be sufficiently smaller than the stiffness of the air inside the cabinet.
- the support system of the passive radiator has a damper for supporting the central portion of the diaphragm and an edge for supporting the outer peripheral portion of the diaphragm.
- the edges have edges of various shapes, but the most frequently used is a roll edge having a semicircular cross section. If the roll edge is used V, even if the diaphragm vibrates with a large amplitude, the diaphragm can be supported while maintaining the linearity of the supporting force.
- Patent Document 2 since the edge of the roll shape has a different amount of excluded air in the direction of the upper and lower amplitudes, even if the supporting force is linear, the distortion component is included in the sound emitted from the edge. It is known to be
- Patent Document 2 Japanese Patent Application Laid-Open No. 5-260581
- FIG. 22 shows a relatively small cabinet with a height of 206 mm, a width of 122 mm, and a depth of 65 mm, and an 8 cm aperture speaker unit (speaker unit having a drive system) attached.
- a microphone is installed at a distance of 1 m from the cabinet on the front side of the cabinet (that is, in the direction of the surface to which the passive radiator is attached).
- the conventional passive radiator is provided with a damper that supports the central portion of the diaphragm.
- a damper By providing a damper, the rolling phenomenon Occurrence is suppressed.
- the diaphragm is supported by two supporting systems, the edge and the damper, it is difficult to make the stiffness of the supporting system of the nose bragita smaller than the stiffness of the air inside the cabinet. Become. This makes it difficult to reduce the resonant frequency of the passive radiator itself, and there is a problem that the bass reproduction limit is limited at this resonant frequency.
- the present invention aims to realize a speaker system with lower distortion.
- the present invention adopts the following configuration in order to solve the above problems.
- the reference numerals and numerals in the parentheses show the correspondence with the drawings in order to aid the understanding of the present invention, and do not limit the scope of the present invention.
- a loudspeaker system is characterized in that the radiated sound of the radiator is radiated from the cabinet in substantially the same direction.
- a second aspect of the present invention is characterized in that, in the above-mentioned first aspect, a plurality of nose brazed members are attached to the same surface of the cabinet (20) (FIG. 1). .
- a third aspect of the present invention relates to the third aspect of the present invention, in the above first aspect, the radiated sound from the plurality of nossi bloggers is induced such that the radiated sounds of the plurality of passive radiators are emitted from the cabinet in substantially the same direction. It is characterized by having a guiding structure (Fig. 6, Fig. 7).
- a reflector (30, 41, 43) provided with an air gap on the front surface of the nossic radiator and an reflector It is characterized in that an opening (31, 42) is provided to radiate the emitted sound of the emitted passive radiator in a specific direction.
- a plurality of passive radiators are provided. It is characterized in that the cross-sectional shape of each of the edges constituting the support system of each of the two types of second braggregators is substantially symmetrical with respect to the attachment surface of the passi- brage.
- the cross-sectional shape of the edge forming each of the supporting systems of the two passive radiators is a convex with the mounting surface of the passive radiator as a reference. It is characterized by being in the shape of a round and concave.
- a seventh aspect of the present invention relates to a distortion component of sound pressure radiated from a part of the support system of the passive radiator (60, 70, 80) and another part of the support system of the nose bridge.
- Force This is a spin force system characterized in that the support system is configured so that the distortion components of the sound pressure that are radiated cancel out each other (Fig. 8, Fig. 10, Fig. 17).
- the edge (62) constituting the support system of the nose brace is a plurality of edge pieces (62a, 62b, 62c) along the outer peripheral direction. It is characterized in that the sectional shapes of the two edge pieces (62a, 62b) among the plurality of edge pieces are substantially symmetrical with respect to the mounting surface of the passive radiator.
- the center of gravity position of the vibration plate in the vibration direction of the vibration plate and the center position of the height dimension of the edge in the vibration direction of the vibration plate are It is characterized in that (Fig. 11, Fig. 12).
- the passive radiator has a structure in which the inner peripheral portion of the edge is joined and fixed to the outer peripheral portion of the diaphragm, and the diaphragm is The thickness of the part joined to the inner circumference of the edge is thinner than the central part of the diaphragm, and has a wedge structure (Fig. 12).
- An eleventh aspect of the present invention is characterized in that, in the eighth aspect, the passive radiator has a structure in which the inner peripheral portion of the edge is sandwiched and fixed by the outer peripheral portion of the diaphragm. ( Figure 11).
- the mass per unit area at the central portion of the diaphragm is greater than the mass per unit area at the outer peripheral portion of the diaphragm. It is characterized ( Figures 13 and 16).
- the vibration plate in the vibration direction is It is characterized in that the center of gravity position of the diaphragm and the center position of the height dimension of the edge in the vibration direction of the diaphragm coincide with each other.
- the thickness of the central portion of the diaphragm is greater than the thickness of the outer peripheral portion of the diaphragm (FIG. 13, FIG. 16).
- the shape of the diaphragm is circular, and the thickness of the diaphragm changes thinly from the center point of the diaphragm toward the outer periphery ( Figure 13).
- the shape of the diaphragm is a square, and the thickness of the diaphragm changes thinly from the center point of the diaphragm to the outer side. It is a feature of
- the shape of the diaphragm is a rectangular shape, and the thickness of the diaphragm is two of center line force diaphragms in the long side direction of the diaphragm. It is characterized by a thin change toward the long side.
- the shape of the diaphragm is a track shape, and the thickness force of the diaphragm, the longitudinal center line force of the diaphragm, and the two sides of the diaphragm. It is characterized by the fact that it changes slightly toward the sea ( Figure 16).
- the nose brace is fixed to at least one surface of the central portion of the diaphragm and has a specific gravity larger than that of the diaphragm. It is further characterized by the fact that it has
- the center of gravity of the diaphragm in the vibration direction of the diaphragm coincides with the central position of the height dimension of the edge in the vibration direction of the diaphragm. It is characterized by
- the shape of the diaphragm is circular, and the weight has a circular shape with a smaller radius than the diaphragm, and the diaphragm and the center point are It is characterized by being fixed at the same level (Fig. 15).
- the diaphragm has a square shape
- the weight has a square shape whose one side is shorter than the diaphragm, It is characterized in that one side of the weight is fixed at a position facing the one side of the diaphragm with the same center point. It is
- the diaphragm has a rectangular shape
- the weight has a rectangular shape smaller than the outer shape of the diaphragm, and the diaphragm and the long side direction It is characterized in that it is fixed with the same center line.
- the shape of the diaphragm is a track shape
- the weight has a rectangular shape smaller than the outline of the diaphragm, and the longitudinal direction of the diaphragm It is characterized in that the center line and the center line in the long side direction of the weight are fixed at the same.
- a twenty-fifth aspect of the present invention is, in the eighth aspect, characterized in that it has convex and concave roll shapes respectively with reference to the mounting surface of the cross-sectional shape force of the two edge pieces. It is a thing.
- a twenty-sixth aspect of the present invention relates to the seventh aspect, wherein the nozzle braces support an annular diaphragm (81) and an inner edge (82a) supporting the inner periphery of the diaphragm and an outer periphery thereof. It has an outer edge (82b) and is characterized in that the cross-sectional shape force of the inner edge and the outer edge is such that the distortion components of the sound pressure radiated cancel each other. It is a thing.
- the cross-sectional shape of one of the inner edge and the outer edge is a convex roll shape with reference to the attachment surface of the passive radiator, Is characterized in that it has a concave roll shape with reference to the mounting surface of the sieve.
- an air gap is provided on the front side of the passive radiator of the speaker system according to any one of the first to twenty-seventh aspects and the radiation sound radiated from the nose brace of the speaker system. It is an audiovisual apparatus (90) provided with a guiding structure which is led to the screen (91) side of the display apparatus by a reflector placed.
- a twenty-ninth aspect of the present invention is a vehicle including the speaker system according to any one of the first to twenty-seventh aspects and a vehicle body holding the speaker system therein (FIGS. 19 and 20). . Effect of the invention
- FIG. 1 is a diagram showing a configuration of a speaker system according to Embodiment 1 of the present invention.
- FIG. 2 is a diagram showing sound pressure frequency characteristics of a noise system of a loudspeaker system.
- FIG. 3 is a view showing the vibration state of the roll edge.
- FIG. 4 is a diagram showing sound pressure frequency characteristics of the speaker system according to Embodiment 1 of the present invention.
- FIG. 5 is a diagram showing a configuration of a speaker system according to Embodiment 2 of the present invention.
- FIG. 6 is an external view of a speaker system according to Embodiment 2 of the present invention.
- FIG. 7 is an external view of a speaker system according to Embodiment 3 of the present invention.
- FIG. 8 is a front view of a speaker system according to Embodiment 4 of the present invention.
- FIG. 9 is an external view of an edge portion of a passive radiator according to Embodiment 4 of the present invention.
- FIG. 10 is a front view of a speaker system using a passive radiator of track shape.
- FIG. 11 is a view showing an example of the structure for suppressing the occurrence of rolling phenomenon in the passive radiator 70 shown in FIG.
- FIG. 12 is a view showing another example of the structure of the diaphragm 71 in the passive radiator 70 shown in FIG.
- FIG. 13 is a view showing an example of the structure of the diaphragm 61 in consideration of weight balance in the passive radiator 60 shown in FIG.
- FIG. 14 is a diagram showing the results of examining the influence of the weight balance of the diaphragm on the rolling phenomenon.
- FIG. 15 is a view showing another example of the structure of the diaphragm 61 having a weight balance in which the central portion is made heavier.
- FIG. 16 is a view showing an example of the structure of a diaphragm 71 having a weight balance in which the central portion is made heavier. is there.
- FIG. 17 is a front view of a speaker system according to Embodiment 6 of the present invention.
- FIG. 18 is a front view of a video and audio system in a sixth embodiment of the present invention.
- FIG. 19 is a view showing an example in which the speaker system of the present invention is mounted on the door of a car.
- FIG. 20 is a view showing an example of a speaker system installed in a car of a car.
- FIG. 21 is a cross-sectional view showing the structure of a conventional speaker system.
- FIG. 22 is a diagram showing sound pressure frequency characteristics of the conventional speaker system.
- FIG. 1 The configuration of the speaker system according to Embodiment 1 of the present invention is shown in FIG.
- (a) is a front view of the speaker system
- (b) is a cross-sectional view showing an A-B cross section of the speaker system.
- 20 is a cabinet
- 21 is a speaker unit
- 22 is a first passive bracketer
- 23 is a diaphragm which is one of the components of the first passive radiator
- 24 is One of the components of the first passive radiator 22 is a rolled convex edge
- 25 is a second passive radiator
- 26 is one of the components of the second passive radiator 25.
- the first and second passive radiators 22 and 25 shown in FIG. 1 are, for example, circular passive radiators.
- the speaker unit 21 which is an electrodynamic speaker is well known, the detailed description is omitted here.
- a music signal is applied to the speaker unit 21
- a force is generated in the voice coil to vibrate the cone diaphragm to generate a sound.
- the sound pressure generated by the cone-shaped diaphragm is radiated to the cavity 28 in the cabinet 20, and the sound pressure causes the first pressure to be reduced.
- the blower 22 and the second passive radiator 25 vibrate to reproduce sound.
- the sound pressure frequency characteristic as shown in FIG. 2 is obtained.
- the horizontal axis is frequency
- the vertical axis is sound pressure level
- a shows the characteristic of the entire speaker system
- b shows the characteristic of the sound emitted from the speaker unit only
- c is passive It only shows the characteristics of the radiated sound that is powerful.
- the characteristic a of the speaker system as a whole is obtained by adding and synthesizing the characteristic b of the sound emitted only by the speaker unit and the characteristic b of the sound emitted only by the passive radiator. From the characteristics shown in Fig.
- the diaphragm of the loudspeaker unit stops by the anti-resonance between the weight of the vibration system of the nosy-brageger and the stiffness of the air in the cabinet. It can be seen that the sound emitted from the SSB is mainly reproduced. Therefore, the distortion generated in the speaker unit does not cause any problem in the bass region, and the distortion in the bass region as a whole of the speaker system is determined by the distortion generated in the passive radiator.
- the generation mechanism of the roll-like edge force generated strain will be described.
- 150 is a diaphragm
- 151 is a convex edge
- 152 is a cabinet to which the convex edge 151 is fixed.
- the diaphragm 150 vibrates linearly and moves back and forth by an equal distance (X mm).
- X mm the amount of air removed when the diaphragm 150 moves X mm forward
- U the amount of air removed when the diaphragm 150 moves X mm backward U
- Due to the deformation of the convex edge 151 the air amount U1 and the air amount U2 will be different. The asymmetry of the amount of air eliminated by such an edge will cause sound pressure distortion.
- the convex edge 24 is used as an edge for supporting the first passive radiator 22, and the concave edge 27 is used as an edge for supporting the second passive radiator 25. Since the cross-sectional shapes of the convex edge 24 and the concave edge 27 are opposite to each other, that is, symmetrical with respect to the mounting surface of the passive radiator, the diaphragms 23 and 26 are of the cabinet 20. The amount of air removed when moving outward and the amount of air being removed when moving inward are equal, and the noises emitted from the first passive radiator 22 and the second nose bridge 25 The distortions cancel each other It will be done.
- the radiation direction of the sound of each passive radiator is the same ( That is, it becomes the front direction of the speaker system), and there is no possibility that the effect of canceling out the distortion fades out depending on the listening position as in the conventional speaker system of FIG.
- FIG. 4 shows that the speaker system shown in FIG. 1 uses a speaker unit of 8 cm in diameter as the speaker unit 21 and both of the first passive radiator 22 and the second passive radiator 25 have a diameter of 6.5 cm.
- the figure shows the measurement results of sound pressure frequency characteristics and second harmonic distortion in the case of using a cabinet with a capacity of 1.3 liters as the cabinet 20 using the passive radiator.
- d indicates sound pressure frequency characteristics
- f indicates distortion characteristics.
- FIG. 4e as a comparative example, the shapes of the edges of the first and second passive radiators 25 and 25 are temporarily changed to be convex on the front surface side of the cabinet 20. The distortion characteristics of the case are shown. As is apparent from FIG.
- the edge shape of the speaker unit 21 is not particularly referred to, but if the edge shape of the speaker unit 21 is a general roll edge, the diaphragm of the speaker unit 21 is When vibrating, distortion may occur for the reason described with reference to FIG.
- the passivator reproduces the sound
- the diaphragm of the speaker unit hardly vibrates around 80 Hz, so the distortion component to which the edge force of the speaker unit is also radiated is extremely large. small.
- the configuration of the present embodiment expands the bass band reproduction band by the passive radiator and further enhances the bass range.
- the support system of the nozzle brace may be configured to further include a damper as a force support system in which only the edge is provided. Even with such a configuration, there is no effect on the effect of reducing distortion in the edge!
- the shape of the edge of the passive radiator is a roll shape as shown in FIG. 1.
- the present invention is not limited to this, and distortion may be generated by a mechanism as shown in FIG. The present invention can be applied to the case of utilizing the edge of the shape of the to reduce the distortion.
- the first passive radiator 22 and the second passive radiator 25 may be disposed at arbitrary positions as long as they have 20 identical planes. For example, even if the first passive bladder 22 and the second passive radiator 25 are arranged side by side, the same effect as that of the present embodiment can be obtained.
- the speaker unit 21 is disposed on the same surface as the surface on which the first passive radiator 22 and the second passive radiator 25 are attached.
- the present invention is not limited to this, and the speaker unit 21 may be disposed on a surface different from the surface to which the first passive radiator 22 and the second passive radiator 25 are attached. Also in this case, the same effect as that of the present embodiment can be obtained.
- the force using two passive radiators of the first passive radiator 22 and the second passive radiator 25 is not limited to the present invention, and the present invention is not limited to this.
- Let's set up a passive radiator For example, in the case where four passive radiators are provided, the edge of the two passive radiators is formed into a convex roll, and the edge of the other two passive radiators is formed into a concave roll, so that distortion components generated from the edge are effective. Can be canceled out.
- the first passive radiator 22 and the second passive radiator 25 have a circular shape, but the present invention is not limited to this.
- the shapes of the first and second passive radiators 22 and 25 may be rectangular, for example, square or rectangular, other polygons, or track shapes, as long as the amount of air to be eliminated is equal as described above. Good.
- the track shape is a racetrack-like shape in which only two opposing sides of a rectangle are replaced by semicircles.
- FIG. 5 is an external view of the speaker system.
- the same components as in FIG. 1 are denoted by the same reference numerals.
- a large difference between the second embodiment and the first embodiment is that a sound reflector 30 is provided on the front face of the first passive radiator 22 and the second passive radiator 25.
- the reflection plate 30 is coupled to the cabinet 20, and thereby the radiation sound of the first passive radiator 22 and the second passive radiator 25 is emitted from the opening 31 as shown by the arrows in FIG.
- the vibration of the speaker unit 21 causes the first passive radiator 22 and the second nosic bragator 25 to vibrate and reproduce sound.
- the distortion of the bass region is reduced by the combination of the convex edge 24 of the first pass brace 22 and the concave edge 27 of the second passive radiator 25 as in the first embodiment.
- the second embodiment is different from the first embodiment in that, as indicated by the arrows in FIG. 6, the sound of the low frequency range radiated from the first radio gear 22 and the second passive radiator 25 is It is a point emitted from the aperture 31 after being synthesized by the reflecting plate 30.
- the sound emitted from the convex edge 24 of the first passive radiator 22 and the concave edge 27 of the second passive radiator 25 is radiated before being emitted into the listening space as in the first embodiment.
- the distortion due to the asymmetry of the amount of air displacement of the convex edge 24 and the concave edge 27 is lower than in the first embodiment because the force is synthesized forcibly in the space formed by the reflecting plate 30. Be reduced.
- the first passive radiator 22 and the second passive radiator 25 are disposed so as to sandwich the speaker unit 21 therebetween.
- the present invention is not limited to this.
- the first passive You may arrange the passive radiator 22 and the second passive radiator 25 side by side.
- the opening 31 is provided along one side of the reflector 30, but the present invention is not limited to this.
- two reflectors 30, Openings may be provided on the above sides, respectively.
- the sound emitted from the first nossi bragita 22 and the second passive radiator 25 is synthesized by the reflecting plate 30 and then emitted from each aperture, so that the convex edge
- the distortion due to the asymmetry of the air displacement amount of the concave 24 and the concave edge 27 is more reliably reduced compared to the first embodiment.
- FIG. Figure 7 is an external view of the speaker system with a part cut away.
- 20 is a cabinet
- 21 is a speaker unit mounted on one side of the cabinet
- 22 is a first passive radiator mounted on the same side as the speaker unit
- 24 is The convex edge of the first passive radiator 22
- 40 is the side of the cabinet 20 perpendicular to the side on which the first passive radiator 22 is mounted
- 25 is attached to the side 40 of the cabinet 20
- a second passive radiator, 27 is a concave edge of the second passive radiator
- 41 is a first reflecting plate provided so as to cover the speaker unit 21 and the first passive radiator 22, 42
- Reference numeral 44 denotes an opening formed by the first reflecting plate 41
- 43 denotes a second reflecting plate provided to cover the second noisy brace
- 44 denotes a second reflecting plate 43.
- An opening formed me In FIG. 7, the same components as in FIG. 1 are denoted by the same reference numerals.
- the sound emitted from the first passive radiator 22 is guided to the opening 42 by the first reflecting plate 41 and emitted from the opening 42.
- the sound emitted from the second passive radiator 25 is guided to the opening 44 by the second reflector 43 and then emitted from the first nosic bragita 22.
- the sound is emitted from the opening 42 together with the sound.
- the shape of the convex edge 24 of the first passive radiator 22 is a convex roll shape
- the shape of the concave edge 27 of the second passive radiator 25 is a concave roll shape.
- the shape of the convex edge 24 of the first passive radiator 22 and the shape of the concave edge 27 of the second passive radiator 25 are symmetrical to each other with respect to the mounting surface of the cabinet 20, the first passive radiator The combination of the sound emitted from the 22 and the sound emitted from the second passive radiator 25 at the aperture 42 cancels the asymmetry of the air displacement amount due to the vibration of the nossy bragator, and as a result, a low distortion bass Can be played.
- the first passive radiator 22 and the second passive radiator 25 can be disposed on different sides of the cabinet 20, respectively, so that the dimensions of the cabinet 20 are restricted. Even in this case, a speaker system capable of low-distortion bass reproduction can be realized.
- FIG. 1 A front view of a speaker system according to Embodiment 4 of the present invention is shown in FIG.
- 20 is a cabinet
- 21 is a speaker unit
- 60 is a passive radiator
- 61 is a diaphragm which is one of the components of the passive radiator 60
- 62 is a passive cage 60. It is an edge that is one of the components.
- the edge 62 is composed of a convex roll 62a, a concave roll 62b, and a joint 62c for continuously connecting the convex roll 62a and the concave roll 62b.
- FIG. 9 is a perspective view showing the details of the joint 62c.
- the shape of the passive radiator 60 shown in FIG. 8 is, for example, circular.
- a force is generated in the voice coil to vibrate the cone-shaped diaphragm to generate a sound.
- the sound pressure generated by the cone-type diaphragm is radiated to the cavity in the cabinet 20, and the sound pressure causes the passive radiator 60 to vibrate and reproduce the sound.
- Embodiment 4 is significantly different from Embodiment 1 in that Embodiment 2 has two passive radiators, while Embodiment 4 has one passive radiator. It is a point that is provided. Multiple edges 62 of nose bridge 60 in circumferential direction In particular, it has a convex roll 62a which is convex with respect to the mounting surface of the cabinet 20, and a concave roll 62b which is concave with respect to the mounting surface of the cabinet 20. Ru. Since the convex roll portions 62a and the concave roll portions 62b are alternately arranged along the circumferential direction, the vibration plate 61 of the passive radiator 60 is moved to the front side (that is, the outside direction of the cabinet 20) by vibration.
- the amount of air that is expelled is equal to the amount of air that is expelled when moving back (ie, toward the inside of the cabinet 20). That is, the distortion component due to the asymmetry of the air exclusion included in the sound emitted from the convex roll portion 62a and the distortion component due to the asymmetry of the air exclusion included in the sound emitted from the concave roll portion 62b are Because they cancel each other, the distortion component due to the asymmetry of the air exclusion amount, in which the entire force of the edge 62 is also emitted, is greatly reduced.
- the number of nose braces attached to the cabinet is more complicated than that of the first embodiment.
- the speaker system can be further miniaturized.
- the shape of the nose brace is not limited to the circular shape shown in FIG.
- it may be a passive radiator 70 in the form of a track.
- FIG. 10 is a front view of a speaker system using a passive radiator 70 in the form of a track.
- the shape of the diaphragm 71 is a track shape.
- the edge 72 is composed of a convex roll 72a, a concave roll 72b, and a joint 72c for continuously connecting the convex roll 72a and the concave roll 72b.
- the configuration of the passive radiator 70 shown in FIG. 10 is a simple configuration in which the edge 72 is divided into two, the convex roll portion 72a and the concave roll portion 72b. Similar effects of distortion reduction can be obtained.
- the shape of the mesher may be, for example, a rectangle such as a square or a rectangle, or any other polygon.
- the rolling phenomenon refers to a phenomenon in which the diaphragm does not vibrate in the vibration direction but vibrates, for example, in an oblique direction with respect to the vibration direction.
- the edge 72 of the passive radiator 70 described above has two elements (a convex roll 7 2a and concave roll 72b). Further, the convex roll 72 a and the concave roll 72 b of the edge 72 are convex and concave with respect to the mounting surface of the cabinet 20. Therefore, the stiffness values of the convex roll 72a and the concave roll 72b have different values. This is one of the causes of the rolling phenomenon.
- FIG. 11 is a view showing an example of a structure for suppressing the occurrence of the rolling phenomenon in the passive radiator 70 shown in FIG. Fig. 11 (a) shows a front view of the passive radiator 70.
- FIG. 11 (b) is a cross-sectional view showing a section E-F of the passive radiator 70.
- FIG. 11B the position of the center of gravity of the diaphragm 71 in the thickness direction is taken as point G.
- the thickness direction of the diaphragm 71 is the left-right direction in FIG.
- the passive radiator 70 shown in FIG. 11 has a sandwich structure in which the inner peripheral portion of the edge 72 is sandwiched by the outer peripheral portion of the diaphragm 71.
- the edge 72 is fixed so that the center of gravity position G of the diaphragm 71 is located on the center line HI. In other words, the edge 72 is fixed so that the center of gravity G of the diaphragm 71 and the central position of the height dimension Y of the edge 72 are at the same position in the vibration direction of the diaphragm 71.
- noss blogger 70 is often arranged as shown in FIG. At this time, if the center of gravity G of the diaphragm 71 is not on the center line HI, the gravity acting on the center of gravity of the diaphragm 71 acts as a force to rotate the diaphragm 71. This makes the rolling phenomenon more likely to occur.
- the center of gravity G of the diaphragm 71 The gravity applied to the center of gravity does not act as a force for rotating the diaphragm 71 because the center position of the height dimension Y of the wedge 72 is at the same position, and does not cause a rolling phenomenon.
- the vibration balance of the diaphragm 71 can be improved by setting the center of gravity G of the diaphragm 71 and the center position of the height dimension ⁇ ⁇ ⁇ of the edge 72 to the same position. As a result, it is possible to suppress the occurrence of the rolling phenomenon even in a passive radiator having a convex roll portion and a concave roll portion.
- the edge 72 is fixed so that the center of gravity G of the diaphragm 71 is located on the center line HI.
- the edge 72 is fixed so that the center of gravity G of the diaphragm 71 is located on the center HI.
- Such positional relationship is also regarded as the position of the center of gravity G of the diaphragm 71 on the center line HI. That is, it is difficult to position the center of gravity G of the diaphragm 71 completely on the center line HI due to manufacturing variations, and this manufacturing error is acceptable.
- the conventional passive radiators 3 and 4 shown in FIG. 21 have a structure in which the diaphragm is supported at two points by an edge and a damper. This is because it was difficult to suppress the occurrence of the rolling phenomenon unless the stiffness of both the edge and the damper was used, that is, the stiffness of the support system supporting the diaphragm was not increased.
- the passive radiator 70 shown in FIG. 11 has a structure in which the occurrence of the rolling phenomenon is suppressed, so that the diaphragm 71 can be supported only by the edge 72. Therefore, the stiffness of the entire support system can be made sufficiently smaller than that of the conventional passive radiators 3 and 4. As a result, the resonant frequency of the nose blade 70 itself can be sufficiently reduced. That is, it is possible to solve the problem that the bass reproduction limit of the speaker system is limited by the resonant frequency of the passive radiator 70 itself.
- the shape of the outer peripheral portion of diaphragm 71 shown in FIG. 11 may be, for example, a shape as shown in FIG.
- FIG. 12 is a view showing another structural example of the diaphragm 71 in the passive radiator 70 shown in FIG. FIG. 12 (a) shows a front view of the passive radiator 70.
- FIG. FIG. 12 (b) is a cross-sectional view showing a cross section E-F of the passive radiator 70.
- the flat portion 712 is formed in a range in which the outer peripheral portion of the diaphragm 71 and the inner peripheral portion of the edge 72 are joined.
- the inner circumferential portion of the edge 72 is fixed to the thin flat portion 712. Also in this case, the edge 72 is fixed so that the gravity center position G of the diaphragm 71 is located on the center line HI. Thereby, the same effect as that of the passive radiator 70 shown in FIG. 11 can be expected. Furthermore, the passive radiator 70 shown in FIG. 12 has a simplified structure in which the edge 72 is attached to the flat portion 712 of the diaphragm 71.
- the passive radiator 70 shown in FIG. 12 is a structure capable of improving productivity as compared with a complicated structure in which the edge 72 as shown in FIG.
- FIG. 13 is a view showing an example of the structure of the diaphragm 61 in consideration of weight balance in the passive radiator 60 shown in FIG.
- FIG. 13 (a) shows a front view of the noss blogger 60.
- FIG. 13 (b) is a cross-sectional view showing the E-F cross section of the passive radiator 60.
- FIG. 13B the position of the center of gravity in the thickness direction of the diaphragm 61 is taken as point G.
- the thickness direction of the diaphragm 61 is the vertical direction in FIG.
- the diaphragm 61 shown in FIG. 13 has a structure with a thick central portion.
- the diaphragm 61 is configured such that the central force of the diaphragm also changes in thickness toward the outer periphery.
- the diaphragm 61 is configured such that the mass (area density) per unit area at the central portion of the diaphragm 61 is larger than the area density of the outer peripheral portion of the diaphragm 61.
- a central portion where the thickness of the diaphragm 61 is thick is referred to as a weight portion 611.
- the weight portion 611 is a portion where the thickness of the material of the diaphragm 61 is increased.
- FIG. 14 shows the result of examining the influence of the weight balance of the diaphragm on the rolling phenomenon.
- ⁇ is the entire thickness of the diaphragm and j8 is the thickness of the central part of the diaphragm thick (or the specific gravity of the material is large)
- the weight of the central part is heavy.
- ⁇ is a value obtained by determining each of the resonance frequency and the rolling frequency.
- the aperture of the passive radiator 60 is 8 cm, the weight of the diaphragm is a; ⁇ ⁇ all 18 g fixed, and the edge 62 is the same edge a; Keep the stiffness value constant.
- the resonance frequency is a frequency determined by the weight of the diaphragm and the stiffness of the edge. Since the weights of the ⁇ to ⁇ diaphragms and the stiffness of the edges are all the same value, the resonance frequency is Q: to ⁇ all have the same frequency of 11.8 Hz.
- the rolling frequency is a frequency at which a rolling phenomenon occurs.
- the rolling frequency is largely different depending on the weight balance of the diaphragm.
- the thickness of the diaphragm was constant. That is, the weight balance of the conventional diaphragm corresponds to the weight balance of ⁇ in FIG.
- the amount of amplitude of the diaphragm decreases as the frequency increases.
- FIG. 14 also shows the rolling frequency in the case of weight balance in which the outer peripheral portion of the diaphragm becomes heavy as ⁇ .
- the drop is about 0.8 times that of the diaphragm with a uniform material thickness shown in FIG.
- the gravity center position G of the diaphragm 61 may be at the same position as the center position of the height dimension ⁇ of the edge 62 in the vibration direction of the diaphragm 61, or may not be at the same position. May be. If the position of the center of gravity G of the diaphragm 61 is at the same position as the center position of the height dimension of the edge 62, as described above, the vibration balance is also improved, and the occurrence of the rolling phenomenon is further suppressed. it can. Further, even if the center of gravity G of the diaphragm 61 is not at the same position as the center position of the height dimension of the edge 62, the above-described weight balance can suppress the occurrence of the ringing phenomenon. is there.
- FIG. 15 shows a diaphragm with a weight balance with the central part weighted. It is a figure which shows the other structural example of 1.
- FIG. FIG. 15 (a) shows a front view of the passive radiator 60.
- FIG. FIG. 15 (b) is a cross-sectional view showing the cross section E-F of the noss bracer 60. Further, in FIG. 15 (b), the position of the center of gravity in the thickness direction when weights 612 and 613, which will be described later, are integrated with the diaphragm 61 is taken as point G.
- the thickness direction is the vertical direction in FIG. 15 (b) and also the vibration direction of the diaphragm 61.
- the diaphragm 61 shown in FIG. 15 is a flat diaphragm made of a resin material such as ABS, for example.
- circular weights 612 and 613 are provided on both sides of the central portion thereof. Specifically, the weights 612 and 613 have a circular shape with a smaller radius than the diaphragm 61, and are fixed so as to have the same center as the diaphragm 61.
- the weights 612 and 613 are made of, for example, a material having a specific gravity larger than that of the diaphragm 61, such as brass or iron.
- the thickness of the central portion of the diaphragm 61 can be made thinner than that of the diaphragm 61 shown in FIG. be able to.
- changing the weight of the central weight part 611 requires changing the molding die etc. Become. That is, once the diaphragm 61 is formed, it is extremely difficult to change the weight of the central weight portion 611 thereafter.
- FIG. 13 in the structure shown in FIG.
- the thicknesses of the weights 612 and 613 are adjusted when the gravity center position G in the thickness direction when the diaphragm 61 and the weights 612 and 613 are integrated is positioned on the center line HI. Vibration balance is also improved, and the occurrence of the rolling phenomenon can be further suppressed.
- FIG. 16 shows an example of the structure of a diaphragm with an amount balance.
- FIG. 16 is a view showing an example of the structure of a diaphragm 71 having a weight balance whose central portion is weighted.
- Figure 16 (a) shows a front view of the passive radiator 70.
- FIG. 16 (b) is a cross-sectional view showing the E-F cross section of the passive radiator 70.
- FIG. 16B the position of the center of gravity of the diaphragm 71 in the thickness direction is taken as a point G.
- the thickness direction of the diaphragm 71 is the vertical direction in FIG.
- the track-shaped diaphragm 71 shown in FIG. 16 has a structure in which the thickness is increased in the longitudinal direction (the same direction as the center line HI) of the center portion of the diaphragm 71.
- the vibrating plate 71 is configured such that the thickness changes between the longitudinal center line HI and the two sides of the vibrating plate.
- a portion of the diaphragm 71 having a large thickness is a weight portion 713.
- a rectangular weight portion 713 is elongated in the diaphragm 71 with its long side direction the same as the longitudinal direction of the track shape.
- the vibration mode differs between the longitudinal direction and the short direction of the diaphragm.
- the degree of occurrence of the rolling phenomenon described above also differs between the longitudinal direction and the lateral direction of the diaphragm. Specifically, the degree of occurrence in the longitudinal direction is smaller than in the lateral direction. This is because the ratio of the roll portions in the longitudinal direction among the roll portions (convex roll portions 72a and concave roll portions 72b) of the edge 72 supporting the diaphragm 71 is larger than the width direction. . Therefore, when the nose brace is in the form of a track, the lateral rolling phenomenon is particularly problematic.
- the weight portion 713 shown in FIG. 16 is formed to be elongated in the longitudinal direction of the diaphragm 71 while applying a force. That is, the weight portion 713 plays a role of concentrating the weight balance in the short direction of the diaphragm 71 in the central portion. As a result, the rolling frequency in the short direction can be increased, and the occurrence of the rolling phenomenon can be suppressed.
- the position of the center of gravity G of diaphragm 71 is not at the same position as the center position of height dimension Y of edge 72 in the vibration direction of diaphragm 71. Also by the above-mentioned weight balance, it is possible to suppress the occurrence of the rolling phenomenon.
- the shapes of the passive radiator and the diaphragm described in the present embodiment may be, for example, a rectangle such as a square or a rectangle, or any other polygon.
- the shapes of the weights 612 and 613 are, for example, a square smaller than the outer shape of the diaphragm.
- the weights 612 and 613 are disposed such that one side faces the one side of the diaphragm, and the centers thereof are the same as the diaphragm.
- the diaphragm 61 is configured such that its thickness changes thinly while going from the center of the diaphragm 61 to the outer side. If the diaphragm has a rectangular shape, the weights 612 and 613 have, for example, a rectangular shape smaller than the outer shape of the diaphragm. The weights 612 and 613 are disposed with the same center line in the long side direction as the diaphragm.
- the diaphragm 61 has a thickness in the middle of the long side direction of the diaphragm 61 toward the two long sides of the diaphragm. Are configured to change lightly.
- the shapes of the weights 612 and 613 are, for example, rectangular shapes smaller than the outer shape of the diaphragm.
- the weights 612 and 613 are disposed with the center line in the long side direction and the center line in the longitudinal direction of the diaphragm (in FIG. 16, the line EF).
- the present embodiment can be applied to the first and second passivators 22 and 25 in the above-described first to third embodiments.
- the shapes of the first and second passive radiators 22 and 25 are set so that the amount of air discharged to the outside of the cabinet 20 and the amount of air discharged to the inside are equal. It needs to be designed.
- FIG. 17 (a) is a front view of the speaker system
- FIG. 17 (b) is a cross-sectional view showing a J-K cross section of the speaker system.
- 20 is a cabinet
- 21 is a speaker unit
- 80 is a passive radiator
- 81 is a ring-shaped diaphragm which is one of the components of the passive radiator 80
- 82a is a passive radiator 80.
- the shape of the inner edge 82 a is a convex roll shape with respect to the mounting surface of the cabinet 20
- the shape of the outer edge 82 b is a concave roll shape with respect to the mounting surface of the cabinet 20. It is.
- the radial width of the inner edge 82a is larger than that of the outer edge 82b. This is because the ring-shaped diaphragm 81 moves to the front side due to vibration.
- the difference between the amount of air expelled by the edge 82a and the amount of air expelled by the inner edge 82a when moving to the back side is given by the outer edge 82b when the ring-shaped diaphragm 81 is moved to the back side. This is to be equal to the difference between the amount of air to be expelled and the amount of air expelled by the outer edge 82b when moving to the front side. Since the amount of air displaced by the edge depends on the size of the circumference of the edge, the radial width of the relatively small inner edge 82a is made larger than the relatively large outer edge 82b. There is a need.
- the present invention is not limited to this, and the shape of the inner edge 82a is concave, The same effect can be obtained by making the shape of the outer edge 82b convex.
- the number of passive radiators attached to the cabinet simplifies the configuration of the speaker system by one, and the speaker system is simplified. Can be made smaller. Further, unlike the fourth embodiment, the complicated shape of the edge is not required.
- FIG. 90 is a PDP main body
- 91 is a screen portion of the PDP main body 90
- 92 is a case of the PDP main body 90.
- the housing 92 is provided with openings 93 and 94. Further, in the housing 92, middle to high-pitched speakers 95 and 96 are incorporated.
- a signal processing circuit for reproducing an image and a signal processing circuit for reproducing a sound are provided in the PDP, the description thereof is omitted here.
- the casing 92 incorporates two speaker systems for the right channel and for the left channel according to the second embodiment (FIG. 6) or the third embodiment (FIG. 7).
- the opening provided in the speaker system for the left channel corresponds to the opening 93 in FIG. 18 and the opening provided in the speaker system for the right channel is shown in FIG. It corresponds to the opening 94 of.
- the middle-high range of the left channel is reproduced by the middle-high range speaker 95, and the left range from the low range to the high range of the left channel is reproduced together with the low range of the left channel emitted from the opening 93.
- the same is true for the right channel.
- the audiovisual apparatus integrated with the speaker emits low-distortion bass toward the front of the audiovisual apparatus (the direction in which the screen is provided). It is possible to realize an audiovisual apparatus that can
- the speaker systems according to Embodiments 1 to 6 described above may be, for example, a speaker system mounted inside a vehicle body of a car.
- a speaker system mounted inside a vehicle body of a car First, with reference to FIG. 19, the case where the speaker system according to the above-described first to sixth embodiments is held inside a vehicle body will be described.
- One example of holding the inside of the vehicle body is, for example, a car door.
- FIG. 19 shows an example in which the speaker system of the present invention is mounted on the door of a car.
- the door of the car is composed of a window 100, a door body 101, a speaker unit 102, and a passive radiator 103.
- the speaker unit 102 is the same as the speaker unit 21 according to the first to sixth embodiments described above.
- the nozzle bracket 103 is similar to, for example, the passive radiator 60 or 70 described above.
- the speaker unit 102 and the passive radiator 103 are attached to the door body 101.
- a space is formed inside the door body 101.
- the speaker system according to the present invention includes the speaker unit 102, the door body 101, and the passive radiator 103.
- the speaker system according to the present invention by mounting the speaker system according to the present invention to the door of a car, it is possible to provide an in-vehicle listening environment in which distortion caused by the edge force of the passive radiator is reduced.
- the speaker systems according to Embodiments 1 to 6 described above may be, for example, an on-vehicle speaker system disposed inside a vehicle body.
- FIG. 20 is a diagram showing an example of a speaker system installed in a car.
- the speaker system 106 is installed, for example, under the seat 105.
- the speaker system 106 is any of the speaker systems according to Embodiments 1 to 6 described above, and the detailed description will be omitted.
- By mounting the speaker system 106 in a vehicle it becomes possible to provide an in-vehicle listening environment in which distortion caused by the edge force of the passive radiator is reduced.
- the speaker system of the present invention is suitable as a speaker system used for an audio device such as a stereo device or a radio cassette device because distortion in the low-pitch range is small.
- the present invention is also suitable for an audiovisual apparatus having an image display function, such as a liquid crystal television, a PDP (plasma display), and a car navigation apparatus.
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- 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)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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US11/662,608 US7974431B2 (en) | 2004-09-13 | 2005-09-13 | Speaker system |
EP05783660.3A EP1791389B1 (en) | 2004-09-13 | 2005-09-13 | Speaker system |
CN200580030453.8A CN101023703B (zh) | 2004-09-13 | 2005-09-13 | 扬声器系统 |
JP2006535137A JP4861825B2 (ja) | 2004-09-13 | 2005-09-13 | スピーカシステム |
Applications Claiming Priority (2)
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JP2004265546 | 2004-09-13 | ||
JP2004-265546 | 2004-09-13 |
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WO2006030760A1 true WO2006030760A1 (ja) | 2006-03-23 |
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PCT/JP2005/016806 WO2006030760A1 (ja) | 2004-09-13 | 2005-09-13 | スピーカシステム |
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US (1) | US7974431B2 (ja) |
EP (1) | EP1791389B1 (ja) |
JP (1) | JP4861825B2 (ja) |
CN (1) | CN101023703B (ja) |
WO (1) | WO2006030760A1 (ja) |
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Also Published As
Publication number | Publication date |
---|---|
EP1791389A1 (en) | 2007-05-30 |
EP1791389B1 (en) | 2016-11-02 |
CN101023703A (zh) | 2007-08-22 |
US7974431B2 (en) | 2011-07-05 |
JPWO2006030760A1 (ja) | 2008-05-15 |
CN101023703B (zh) | 2011-09-07 |
EP1791389A4 (en) | 2012-10-03 |
US20070201712A1 (en) | 2007-08-30 |
JP4861825B2 (ja) | 2012-01-25 |
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