TW469747B - Exciter for imparting bending wave energy to a panel and loudspeaker - Google Patents
Exciter for imparting bending wave energy to a panel and loudspeaker Download PDFInfo
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- TW469747B TW469747B TW89102289A TW89102289A TW469747B TW 469747 B TW469747 B TW 469747B TW 89102289 A TW89102289 A TW 89102289A TW 89102289 A TW89102289 A TW 89102289A TW 469747 B TW469747 B TW 469747B
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- exciter
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- 238000005452 bending Methods 0.000 title claims abstract description 10
- 230000005284 excitation Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 238000013461 design Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 239000011162 core material Substances 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 101100327917 Caenorhabditis elegans chup-1 gene Proteins 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010137 moulding (plastic) Methods 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/04—Plane diaphragms
- H04R7/045—Plane diaphragms using the distributed mode principle, i.e. whereby the acoustic radiation is emanated from uniformly distributed free bending wave vibration induced in a stiff panel and not from pistonic motion
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/227—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only using transducers reproducing the same frequency band
-
- 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
- H04R9/066—Loudspeakers using the principle of inertia
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
Description
^^9 747 案號 89102289 月 年 修正 曰 五、發明說明（1) 本發明係關於揚聲器及更特別關於諧振板式揚聲器，即 如國際專利申請WO 97/09842說明之普通型揚聲器，及供 該諧振板式揚聲器用之震動激勵器。本發明係特別關於一 具或多具震動激勵器嵌入該板結構之諧振板式揚聲器。 震動激勵器嵌入諧振板式揚聲器之以前設計係使用各種 不同之組合與構型，但此耗時及製造困難。此外，也證明 難以藉嵌入之激勵器產生適當之高頻率性能（< 1 0 kHz )。 主要問題係在厚度之限制及在一板中建立彎曲波之方法， 通常表面安裝激勵器係較簡單及省時，而不損及寬頻帶寬 板之需求。由於鄰近激勵器處之板結構不對稱，故現行震 動激勵器嵌入之設計係仍在板之每一側具有不同頻率反 應。 本發明之一概念係提供一震動激勵器嵌入諧振板式揚聲 器結構，以緩和一項或多項困難。 本發明之另一概念係一供加施彎曲波能量於一諧振板用 之激勵器，該激勵器係包括一線圈總成，該總成具有一結 合第一底座之線圈，一具有磁體之磁體總成，一在該線圈 内之内極靴，及一在該線圈外部之外極靴，該總成中界定 布孔，一支撐構件係供結合在線圈相對端之一第二底座至 具有通過該磁體總成孔之突出部份的第一底座。 本發明之另一概念係一揚聲器，該揚聲器係包括一諧振 板狀構件及一激勵器，該激勵器係如前述說明之嵌入式激 勵器，以致使該板諧振而產生一聲輸出。 因該激勵器之設計必須係該激勵器之線圈應直接黏固於 在該線圈下方之一碟形底座上，及也經一組呈肋狀之轴向^^ 9 747 Case No. 89102289 Revised in January 5. Description of the invention (1) The present invention relates to loudspeakers and more particularly to resonant panel speakers, that is, ordinary speakers as described in International Patent Application WO 97/09842, and for the resonance Vibration exciter for panel speakers. The present invention particularly relates to a resonant panel speaker having one or more vibration exciters embedded in the panel structure. The previous design of the vibration exciter embedded in the resonant panel speaker used various combinations and configurations, but this was time consuming and difficult to manufacture. In addition, it has also proven difficult to generate appropriate high-frequency performance (< 10 kHz) by embedded exciters. The main problem is the limitation of thickness and the method of establishing bending waves in a board. Generally, the surface-mounted exciter is simpler and time-saving, without compromising the demand of the broadband board. Due to the asymmetric structure of the plate near the exciter, the current design of the embedded seismic exciter still has different frequency responses on each side of the plate. One concept of the present invention is to provide a vibration exciter embedded resonator plate type speaker structure to alleviate one or more difficulties. Another concept of the present invention is an exciter for applying bending wave energy to a resonance plate. The exciter includes a coil assembly having a coil combined with a first base and a magnet having a magnet. An assembly, an inner pole shoe inside the coil, and an outer pole shoe outside the coil, the assembly defines a cloth hole, and a supporting member is provided for a second base combined with one of the opposite ends of the coil to have a The first base of the protruding portion of the magnet assembly hole. Another concept of the present invention is a loudspeaker. The loudspeaker includes a resonant plate-like member and an exciter. The exciter is an embedded exciter as described above, so that the board resonates to generate an acoustic output. Because the design of the exciter must be that the coil of the exciter should be directly fixed on a dish-shaped base below the coil, and also through a set of rib-shaped axial
O:\62\62684.ptc 第4頁 2001.09. 06. 004 469 747 _案號 89102289_年月日__. 五、發明說明C2)O: \ 62 \ 62684.ptc page 4 2001.09. 06. 004 469 747 _ case number 89102289_ year month day __. 5. Description of the invention C2)
突出部份黏固於位於該線圈上方之一相同底座。該線圈之 運動係同時傳遞至下底座及上底座及兩底座係以同一方向 運動。該二底座係可黏固至在該板頂表面與底表面之板心 芯材料上D 本發明係以範例方式藉隨附圖式說明，圖式係包括： 圖1係嵌入式慣性電動震動激勵器一實例之分解圖； 圖2係圖1所示激勵器組合後之視圖； 圖3係嵌入一板中之激勵器截面圖； 圖4係嵌入一板中之激勵器第二實例載面圖； 圖5係激勵器組合至一板中之說明； 圖6係激勵器在一板中定向之說明； 圖7係嵌入式慣性電動激勵器另一實例之頻率反應曲線 圖； 圖8係圖1及圖2所示型別激勵器之頻率反應曲線圖； 圖9係使用一對激勵器之功率反應說明；及 圖1 0係一實例中之底座結構說明。 元件符號說明 1 頂 部 底 座 3 底 部 底 座 5 線 圈 7 線 圈 靠 模 11 磁 體 杯 13 基 座 15 側 壁 17 磁 體 19 内 極 2 1 扎 23 支 撐 構 件 25 環 27 肋 條 29 海 綿 支 撐 31 板 33 蒙 皮The protruding part is fixed to an identical base above the coil. The motion of the coil is transmitted to the lower base, the upper base, and both bases in the same direction. The two bases can be fixed to the plate core material on the top and bottom surfaces of the board. The present invention is described by way of example with accompanying drawings. The drawings include: Figure 1 is an embedded inertial electric vibration excitation. An exploded view of an example of an actuator; Figure 2 is a view after the combination of the actuators shown in Figure 1; Figure 3 is a sectional view of an actuator embedded in a plate; ; Figure 5 is a description of the combination of the exciter into a board; Figure 6 is a description of the orientation of the exciter in a board; Figure 7 is another example of the frequency response curve of the embedded inertial electric exciter; Figure 8 is Figure 1 And the frequency response curve of the type exciter shown in FIG. 2; FIG. 9 is an explanation of the power response using a pair of exciters; and FIG. 10 is an explanation of the structure of the base in an example. Description of component symbols 1 Top base 3 Base bottom 5 Coil 7 Coil master 11 Magnetic cup 13 Base 15 Side wall 17 Magnet 19 Inner pole 2 1 Tie 23 support structure 25 ring 27 Rib 29 Sponge support 31 Plate 33
O:\62\62684.ptc 第5頁 2001.09.06.005 a 6 9 747 年 月 修正 案號 89102289 五 、發明說明（3) 34 板之表面 35 心怎 37 槽鏠 39 塑膠模製 件 41 孔 43 開縫 45 長銅執 4 7, 4 9第一及第 二 激勵器 51 蒙皮 53 心芯 參 閱圖1至圖3知， 係說明一電動 激勵器。一 頂 部底座 ， ---- J片口卜总厘 (!)及一底部底座（3)係構成该激勵gg之頂表面與底表面。 一線圈總成係包括一線圈（5 )，該線圈安裝在裝於底部 底座（3 )之線圈靠模（7 )上。一磁體總成係具有一磁體杯3 (1 1 )，該杯具有—基座（1 3 )及側壁（1 5 )坐落在音線圈（5 ) 之上。磁體杯内側具有一磁體（17)及一呈碟形之内極机 (1 9 )。基座中係具有孔（2 1 )及杯係具有侧壁。 一支撐構件（23)係具有一環（25)以圓周方式繞該杯基座 伸延及肋條（2 7 )通過該孔（2 1 )伸延。於該磁體杯運動$， 黏固於板心这材料之海綿支撐（29 )(或獨立支撑）係保拉却 磁體杯相對於該線圈之位置。 μ 〜 該三等距間隔之軸，肋條（2 7 )係黏固於碟形底座及 支撐之側壁。如圖所示，該垂直肋條係穿過該磁體杯1 係藉使用一圖2所示之缺口磁體杯達成，該杯/ ° 11 三位置連接至該線圈總成。 个』使肋條在 圖3係嵌入一板（31)中之激勵器載面圖。海綿支 係固持該磁體杯（1 1 )。該板係包括蒙皮（3 3 )包於心+ 之四周；該激勵器係該板之表面（3 4 )齊平。 、〜心U ； 另一實例係示於圖4。支撐構件（23)係可盥 體成形（5)。一塑膠模製件（39)係可包括線/圈靠模ϋ成及一O: \ 62 \ 62684.ptc Page 5 2001.09.06.005 a 6 9 Month 747 Amendment No. 89102289 V. Description of the invention (3) 34 Surface of the board 35 Heart 37 37 Slot 39 Plastic molding 41 hole 43 open The slit 45 is made of long copper, 4 7, 4 9 and the first and second exciters 51 are covered with a skin 53. The core is described with reference to FIGS. 1 to 3, and is an electric exciter. A top base, ---- the total thickness of the J-piece mouth (!) And a bottom base (3) constitute the top surface and the bottom surface of the excitation gg. A coil assembly includes a coil (5), which is mounted on a coil master (7) mounted on a bottom base (3). A magnet assembly has a magnet cup 3 (1 1). The cup has a base (1 3) and a side wall (1 5) located on the sound coil (5). A magnet (17) and a dish-shaped inner pole machine (1 9) are arranged inside the magnet cup. The base is provided with a hole (2 1) and the cup is provided with a side wall. A support member (23) has a ring (25) extending around the cup base in a circumferential manner and a rib (2 7) extending through the hole (2 1). As the magnet cup moves $, the sponge support (29) (or independent support) glued to the material of the plate core is the position of the magnet cup relative to the coil. μ ~ The three equally spaced axes, the ribs (2 7) are fixed to the dish-shaped base and the supporting side walls. As shown in the figure, the vertical ribs pass through the magnet cup 1 by using a notched magnet cup shown in FIG. 2, and the cup / ° 11 three-position is connected to the coil assembly. Figure 3 is a side view of the exciter in which the ribs are embedded in a plate (31). The sponge cup holds the magnet cup (1 1). The board includes a skin (3 3) wrapped around the heart +; the exciter is flush with the surface (3 4) of the board. , ~ 心 U; Another example is shown in FIG. 4. The supporting member (23) is a toilet-shaped body (5). A plastic molded part (39) may include a wire / loop mold forming and a
O:\62\62684.ptc 第6頁 2001.09.06. 006 4 69 747 _案號 89102289_年月日_ί±^._. 五、發明說明（4) 肋條（2 7 )。在此情況下，該環係可省略；可膠合肋條至頂 部底座或頂部底座中具有之槽缝（3 7 )，以接納該肋條。 該設計係不對稱，因此，在兩侧壁間係產生不同之頻率 反應（可能很小）。使用二背對背之激勵器係可能達成對稱 設計，因而獲得在板兩側之一致的頻率反應，如圖5及圖6 所示。 參閱圖5知，二孔（4 1 )係以對應底座（1 ，3 )外徑之大小 在板中加工而成。 一開縫（4 3 )係切割板中及孔係在疊合該板前加工而成。 一長銅執（4 5 )係在疊合該板前安裝於該開縫中。而後用環 氧樹脂固定第一及第二激勵器（4 7，4 9 )於定位，及該二激 勵器係以相位接線。 圖6係說明如何使第二激勵器（4 9 )與第一激勵器（4 7 )相 反，以產生一更對稱之結構與頻率反應。 激勵器最好係其周圍之區域具有較板更強之彎曲硬度。 就效果而言，藉軸向肋條連接底座係可形成一夾層式結 構，該結構係會具有匹歒該板其餘部份之阻抗。但因底座 係很薄，故相對底座直徑，密度及硬度之孔效應即會發 生。欲增加底座之諧振頻率，一聲頻率帶寬以外之位置， 一小直徑，硬度，低密度之底座係最佳。底座之結構係必 須能有效傳遞彎曲波至該板。 藉連接線圈至軸向肋條，即可增加有效之線圈質量。如 太高，係會使質量具有高頻率下降之結果。欲防止此效 應，垂直肋條之質量係必須減少，但應保持適當之硬度， 以在二底座間傳遞力量。截至目前，使用之肋條係由聚氨O: \ 62 \ 62684.ptc Page 6 2001.09.06. 006 4 69 747 _Case No. 89102289_year month__ ±± ._. V. Description of the invention (4) Ribs (2 7). In this case, the ring system may be omitted; the rib may be glued to the top base or the slot (3 7) provided in the top base to receive the rib. The design is asymmetric, so there are different frequency responses (possibly small) between the two side walls. The use of two back-to-back exciters is possible to achieve a symmetrical design, thus achieving a consistent frequency response on both sides of the board, as shown in Figures 5 and 6. Referring to FIG. 5, the two holes (4 1) are processed in the plate with a size corresponding to the outer diameter of the base (1, 3). A slit (4 3) is processed in the cutting board and the holes are processed before the board is superposed. A long brass handle (4 5) is installed in the slot before the board is stacked. Then, the first and second actuators (4, 7 and 4) are fixed in position by epoxy resin, and the two actuators are connected in phase. Fig. 6 illustrates how the second exciter (49) can be reversed from the first exciter (47) to produce a more symmetrical structure and frequency response. The exciter is preferably such that the surrounding area has a stronger bending stiffness than the plate. As far as the effect is concerned, connecting the base system by the axial ribs can form a sandwich structure, and the structure will have the impedance matching the rest of the board. However, because the base is very thin, the pore effect of the base diameter, density and hardness will occur. To increase the resonance frequency of the base, a position outside the frequency band of the sound, a base with a small diameter, hardness, and low density is the best. The structure of the base must be able to effectively transmit bending waves to the board. By connecting the coil to the axial rib, the effective coil mass can be increased. If it is too high, the quality will result in high frequency degradation. To prevent this effect, the mass of the vertical ribs must be reduced, but appropriate rigidity should be maintained to transfer force between the two bases. Up to now, the ribs used are made of polyurethane
O:\62\62684.ptc 第7頁 2001.09. 06.007O: \ 62 \ 62684.ptc Page 7 2001.09. 06.007
469 T4T _案號 89102289_年月日_ί±£：_. 五'發明說明（5) 酯熱塑膠（厚1 mm)製成，其他熱塑膠，其他材料，如輕金 屬係也可採用。 該激勵器設計用之重要參數如下： (i) 底座材料，直徑，厚度及密度； (i i ) 軸向肋條材料特性，硬度及密度； (i i i ) 線圈直徑° 在下述範例中，係選用下述規格之嵌入板： 尺寸 ： 600x530mm 最大Rohacell 厚度 ： 10-12 mm 激勵器設計限制因數： (i ) 最小總激勵器厚度=8 mm (ii) 最佳激勵器尺寸-25 mm直徑 厚度限制係於該板總厚度為1 2 m m時，應限制該底座厚 度於約2 mm。最佳激勵器尺寸係視該板所需響度而定，亦 即較小直徑之激勵器可能無法加施足夠力量至該板中。該 限制係說明最小之底座直徑應固定於約4 0 m m。 於激勵器參數及板之參數已固定，即可評估該底座之選 擇。 已評估之該底座選擇如下：469 T4T _Case No. 89102289_Year Month _ £: _. Five 'invention description (5) made of ester thermoplastic (1 mm thick), other thermoplastics, other materials, such as light metals can also be used. The important parameters used in the design of the actuator are as follows: (i) base material, diameter, thickness and density; (ii) axial rib material characteristics, hardness and density; (iii) coil diameter ° In the following examples, the following are selected Specification of embedded board: Size: 600x530mm Maximum Rohacell thickness: 10-12 mm Exciter design limiting factors: (i) Minimum total exciter thickness = 8 mm (ii) Optimal exciter size-25 mm When the total thickness of the board is 12 mm, the thickness of the base should be limited to about 2 mm. The optimal exciter size depends on the required loudness of the panel, ie smaller diameter exciters may not be able to apply sufficient force to the panel. This restriction means that the smallest base diameter should be fixed at about 40 mm. Since the parameters of the exciter and the board have been fixed, the choice of the base can be evaluated. The evaluated base options are as follows:
O:\62\62684.ptc 第8頁 2001.09.06.008 4 by 74 jr 年月曰 修正 4 69 747 五、發明說明 _案號 89102289 (6) 選擇 項目 底座材料 底座厚度 板心芯材料 頻率上限 1 2 聚碳酸酯 1 mm Rohacell IG 5 1 1 0mm 厚 8 kHz 聚笨乙烯 1.25mm Rohacel 1 IG 5 1 1 Omm 厚 10kHz 3 8 .OOmm Rohacell IG 51壓縮至1.7mm 1.7mm Rohacel 1 IG 5 1 1 Omm 1 2 kHz 4 E-Gls 104 預浸勝 w/ Rohacell IG 5 1 1 mm 1.2mm Rohacell IG 5 1 1 Omm 厚 1 0kHz 5 E-Gls 104預浸膠 w/ 4.00mm Rohacell IG 5 1壓縮至1.8mm 2mm Rohacell IG 5 1 1 2mm 厚 15kHz 表1 :底座結構及頻率上限 表1說明增加底座厚度係會改善最大可能厚度2 mm板之 高頻率性能。使用一較厚之板或減少激勵器之厚度，以使 底座具有較高之厚度，係可更進一步增加高頻率限制。 一底座（1 ，3)係可具有一内有心芯（53)之蒙皮（51)夾層 式結構（圖1 0 )。與單一結構相較，該夾層式結構底座係可 改善高頻率性能。此可能係該夾層式結構高硬度與重量比 之結果。 就該板而言，該板之線圈側的頻率係不同於該板之磁體 侧的頻率，因此該板之兩側係應測量與比較。就整體喪入 式板而言，在該板之兩侧之間係具有差異，即高頻率性能 之差異。該頻率反應在理想上係需相同，參閱下述之結 果。O: \ 62 \ 62684.ptc Page 8 2001.09.06.008 4 by 74 jr Year and month correction 4 69 747 V. Description of the invention_ Case No. 89102289 (6) Select the base material of the base material Thickness of the core plate Upper frequency of the core material 1 2 Polycarbonate 1 mm Rohacell IG 5 1 1 0mm thick 8 kHz Polyvinyl 1.25mm Rohacel 1 IG 5 1 1 Omm thick 10kHz 3 8 .OOmm Rohacell IG 51 compressed to 1.7mm 1.7mm Rohacel 1 IG 5 1 1 Omm 1 2 kHz 4 E-Gls 104 prepreg w / Rohacell IG 5 1 1 mm 1.2mm Rohacell IG 5 1 1 Omm thickness 1 0kHz 5 E-Gls 104 prepreg w / 4.00mm Rohacell IG 5 1 compressed to 1.8mm 2mm Rohacell IG 5 1 1 2mm thickness 15kHz Table 1: Base structure and upper frequency limit Table 1 shows that increasing the base thickness will improve the high frequency performance of the maximum possible thickness of 2 mm board. Using a thicker plate or reducing the thickness of the exciter so that the base has a higher thickness can further increase the high frequency limit. A base (1, 3) may have a sandwich (51) sandwich structure with a core (53) inside (Fig. 10). Compared with a single structure, this sandwich structure base system can improve high frequency performance. This may be the result of the high hardness to weight ratio of the sandwich structure. For the board, the frequency on the coil side of the board is different from the frequency on the magnet side of the board, so both sides of the board should be measured and compared. With regard to the overall funneled board, there is a difference between the two sides of the board, that is, the difference in high-frequency performance. The frequency response should ideally be the same, see the results below.
O:\62\62684.ptc 第9頁 2001.09. 06. 009 469 747 _案號 89102289_年月曰__, 五、發明說明（7) 圖7係說明具有單一激勵器之嵌入式板的頻率反應。在 此情況下，高頻率性能係不平均，即在該板之磁體側係具 有一將近7-8 kHz之頻帶空段。 該材料之高頻率極限係約在1 0 k Η z左右。高頻率性能係 該底座之特性有關。該夾層式結構底座係可改善高頻率性 能。 欲簡化製造過程，最好係該底座，垂直肋條及海綿支撐 可藉射出成形構成一單一零件。 一熱塑膠底座之設計係更適合於低成本板，因其不需高 頻率性能。 一夾層式結構底座係具有超高頻率性能及更適合於寬波 帶寬之需求。 較厚之夾層式結構底座係會改善該板之高頻率性能。較 薄激勵器或較厚之板係可採用。 在板中之背對背之嵌入式激勵器係可預期在各別板表面 較使用單一雙底座激勵器更具有相似之頻率反應。實情即 係如此。 圖8係說明一板具有二激勵器時，在其每一側邊之頻率 反應，其可與圖7所示具有一激勵器之板的相似曲線相比 較。圖8係說明一改良之配合，例如，在7 - 8 k Η ζ之不對稱 係平順。 欲評估具有雙激勵器（一為反向）嵌入式板之功率反應， 係執行功率反應測量。此係說明板如何發聲至人耳。測量 係藉使用Μ ί s s a測量系統之一系列測量及平均其結果而得 該板在1 V平方根值輸出之平均功率測量。該反應係如圖9O: \ 62 \ 62684.ptc Page 9 2001.09. 06. 009 469 747 _ case number 89102289 _ year and month __, 5. Description of the invention (7) Figure 7 illustrates the frequency of an embedded board with a single exciter reaction. In this case, the high-frequency performance is uneven, that is, there is a band of approximately 7-8 kHz on the magnet side of the board. The high frequency limit of this material is about 10 k Η z. High frequency performance is related to the characteristics of the base. This sandwich structure base system can improve high frequency performance. To simplify the manufacturing process, it is best to tie the base, the vertical ribs and the sponge support can be formed into a single part by injection molding. The design of a thermal plastic base is more suitable for low cost boards because it does not require high frequency performance. A mezzanine structure base has ultra-high frequency performance and is more suitable for the requirements of wide wave bandwidth. A thicker sandwich structure base will improve the board's high frequency performance. Thinner actuators or thicker plates can be used. Embedded back-to-back exciters in the board are expected to have similar frequency responses on the individual board surfaces compared to the use of a single dual base exciter. That's the truth. Figure 8 illustrates the frequency response on each side of a board with two exciters, which can be compared with similar curves for a board with one exciter shown in Fig. 7. Fig. 8 illustrates a modified fit, for example, the asymmetric system at 7-8 k Η ζ is smooth. To evaluate the power response of an embedded board with dual actuators (one for the reverse direction), perform a power response measurement. This is how the board sounds to the human ear. The measurement is obtained by using a series of Μ s s a measurement systems to measure and average the results to obtain the average power measurement of the board output at 1 V square root. The reaction system is shown in Figure 9
O:\62\62684.ptc 第10頁 2001. 09. 06.010 4 69 747 _案號 89102289_年月日_ί±ί._. 五、發明說明（8) 所示。功率測量係說明該嵌入式板產生約達1 7 k Η z之高頻 率輸出及具有一相當平順之輪出。 本發明係不僅限於前述之實例。特別係雖該激勵器之特 性已實質改善，即藉具有支撐構件配置於緊靠該音線圈之 處（此須該支撐構件通過該磁體總成，因而該磁體總成係 必須具有一孔），此對具有該支撐構件配置在該磁體總成 外側之每一激勵器而言，可能係一不太好之實例。在此情 況下，該支撐構件係可壓入第一及第二底座間之空隙中及 例如使用黏著劑固定於每一底座，這板8，即可使該第一 及第二底座耦合。O: \ 62 \ 62684.ptc Page 10 2001. 09. 06.010 4 69 747 _Case No. 89102289_Year Month and Day_ί ± ί._. 5. The description of the invention (8). The power measurement shows that the embedded board produces a high-frequency output of about 17 k Η z and has a fairly smooth rotation. The invention is not limited to the foregoing examples. In particular, although the characteristics of the exciter have been substantially improved, that is, by having a supporting member arranged close to the sound coil (this requires the supporting member to pass through the magnet assembly, the magnet assembly must have a hole), This may be a bad example for each exciter having the support member disposed outside the magnet assembly. In this case, the support member can be pressed into the space between the first and second bases and fixed to each base using an adhesive, for example. The plate 8 can couple the first and second bases.
O:\62\626S4.ptc 第11頁 2001.09.06.011O: \ 62 \ 626S4.ptc Page 11 2001.09.06.011
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB9903044.7A GB9903044D0 (en) | 1999-02-11 | 1999-02-11 | Loudspeakers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TW469747B true TW469747B (en) | 2001-12-21 |
Family
ID=10847510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW89102289A TW469747B (en) | 1999-02-11 | 2000-02-11 | Exciter for imparting bending wave energy to a panel and loudspeaker |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP1151631A2 (en) |
| JP (1) | JP2002537705A (en) |
| CN (1) | CN1339236A (en) |
| AU (1) | AU2556300A (en) |
| CA (1) | CA2361295A1 (en) |
| EA (1) | EA200100883A1 (en) |
| GB (1) | GB9903044D0 (en) |
| TW (1) | TW469747B (en) |
| WO (1) | WO2000048428A2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6751329B2 (en) | 2000-09-21 | 2004-06-15 | New Transducers Limited | Loudspeaker driver |
| GB0023134D0 (en) * | 2000-09-21 | 2000-11-01 | New Transducers Ltd | Loudspeaker driver |
| US7447322B2 (en) | 2004-01-13 | 2008-11-04 | Brookstone Purchasing, Inc. | Speaker having a transparent panel |
| EP2071868B1 (en) * | 2006-09-27 | 2013-06-26 | ZHANG, Bailiang | Vibrating system of panel form electrodynamic loudspeaker |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| UA51671C2 (en) * | 1995-09-02 | 2002-12-16 | Нью Транзд'Юсез Лімітед | Acoustic device |
| GB9704486D0 (en) * | 1997-03-04 | 1997-04-23 | New Transducers Ltd | Acoustic devices etc |
| GB9701983D0 (en) * | 1997-01-31 | 1997-03-19 | New Transducers Ltd | Electro-dynamic exciter |
-
1999
- 1999-02-11 GB GBGB9903044.7A patent/GB9903044D0/en not_active Ceased
-
2000
- 2000-02-09 CN CN 00803532 patent/CN1339236A/en active Pending
- 2000-02-09 JP JP2000599239A patent/JP2002537705A/en active Pending
- 2000-02-09 WO PCT/GB2000/000389 patent/WO2000048428A2/en not_active Application Discontinuation
- 2000-02-09 CA CA002361295A patent/CA2361295A1/en not_active Abandoned
- 2000-02-09 EP EP00903798A patent/EP1151631A2/en not_active Withdrawn
- 2000-02-09 EA EA200100883A patent/EA200100883A1/en unknown
- 2000-02-09 AU AU25563/00A patent/AU2556300A/en not_active Abandoned
- 2000-02-11 TW TW89102289A patent/TW469747B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| CA2361295A1 (en) | 2000-08-17 |
| AU2556300A (en) | 2000-08-29 |
| EA200100883A1 (en) | 2002-02-28 |
| WO2000048428A3 (en) | 2001-01-25 |
| CN1339236A (en) | 2002-03-06 |
| WO2000048428A2 (en) | 2000-08-17 |
| GB9903044D0 (en) | 1999-03-31 |
| JP2002537705A (en) | 2002-11-05 |
| EP1151631A2 (en) | 2001-11-07 |
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