JPS5911100A - Sound device for vehicle - Google Patents

Sound device for vehicle

Info

Publication number
JPS5911100A
JPS5911100A JP11988282A JP11988282A JPS5911100A JP S5911100 A JPS5911100 A JP S5911100A JP 11988282 A JP11988282 A JP 11988282A JP 11988282 A JP11988282 A JP 11988282A JP S5911100 A JPS5911100 A JP S5911100A
Authority
JP
Japan
Prior art keywords
diaphragm
vehicle
driver
panel member
sound
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.)
Granted
Application number
JP11988282A
Other languages
Japanese (ja)
Other versions
JPS643436B2 (en
Inventor
Yoshiaki Murakami
村上　嘉昭
Akimitsu Shino
篠　秋光
Tatsuya Watanabe
達也 渡辺
Akio Ajimine
安次嶺　昭男
Takayuki Yagishima
柳島　孝幸
Junichi Kasai
純一 笠井
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.)
Nissan Motor Co Ltd
Faurecia Clarion Electronics Co Ltd
Original Assignee
Clarion Co Ltd
Nissan Motor Co Ltd
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
Application filed by Clarion Co Ltd, Nissan Motor Co Ltd filed Critical Clarion Co Ltd
Priority to JP11988282A priority Critical patent/JPS5911100A/en
Priority to US06/491,292 priority patent/US4551849A/en
Publication of JPS5911100A publication Critical patent/JPS5911100A/en
Publication of JPS643436B2 publication Critical patent/JPS643436B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
    • B60R11/0217—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof for loud-speakers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
    • B60R11/0217—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof for loud-speakers
    • B60R11/0223—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof for loud-speakers of flat type
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R2011/0001—Arrangements for holding or mounting articles, not otherwise provided for characterised by position
    • B60R2011/0003—Arrangements for holding or mounting articles, not otherwise provided for characterised by position inside the vehicle
    • B60R2011/0019—Side or rear panels
    • B60R2011/0024—Rear shelves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R2011/0042—Arrangements for holding or mounting articles, not otherwise provided for characterised by mounting means
    • B60R2011/0043—Arrangements for holding or mounting articles, not otherwise provided for characterised by mounting means for integrated articles, i.e. not substantially protruding from the surrounding parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R2011/0042—Arrangements for holding or mounting articles, not otherwise provided for characterised by mounting means
    • B60R2011/0043—Arrangements for holding or mounting articles, not otherwise provided for characterised by mounting means for integrated articles, i.e. not substantially protruding from the surrounding parts
    • B60R2011/0045—Arrangements for holding or mounting articles, not otherwise provided for characterised by mounting means for integrated articles, i.e. not substantially protruding from the surrounding parts with visible part, e.g. flush mounted
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

PURPOSE:To improve the frequency characteristics, by providing a slit as if it encloses a sound driver and reinforcing the desired part with another member in case a panel member is used to a sound diaphragm. CONSTITUTION:An additional diaphragm member 12a is provided to a vibrating part 8b where the driver D functioning as a sound oscillator in order to increase the rigidity, etc. The part 8b consisting of a panel member 8 is unified with the member 12a to form the diaphragm 12 of a speaker. Plural slits of appropriate shape are consecutively formed at the part of the member 8 around the member 12a. Thus both mass and rigidity are increased for the diaphragm 12, and therefore the minimum resonance frequency is reduced. It is possible to obtain a miniature speaker for a vehicle with good characteristics.

Description

【発明の詳細な説明】 この発明は車両の内外装用等の各種パネル部材を音響振
動板として利用する車両用音響装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vehicle acoustic device that utilizes various panel members for the interior and exterior of a vehicle as an acoustic diaphragm.

従来の車両用音響装置としては例えば第１図〜第３図に
示すようなものがある（特願昭５４−１３５１１４号美
まず第１図は音響用加振器であるドライバーＤを示すも
ので、円筒状のフレーム＋１）の前稜（第１図上下）両
端面にそれぞれ加振プレート（２）およびカバープレー
ト（３）が固着されてケース体が構成され、このケース
体の中央部に環状のｉグネソト（４）を備えたヨーク（
５）が配設されている。ヨーク（５）はポールピース（
５ａ）および・ヨークプレー）　（５ｂ）からなシ、こ
れらがマグネット（４）と一体となって空隙部を有する
磁気回路が構成され、ヨークプレー）　（５ｂ）の部分
でダンパー（６）を介してフレーム（１）に弾性支持さ
れている。また上記空隙部にはボビンに巻回されたコイ
ル（７）が配置され、そのボビンが加振プレー　）　（
２）に固着されている。そしてこのように構成されたド
ライバーＤが第２図および第３図に示すように自動車の
りャバーセル等を形成しているパネル部材（８）の背面
側に７レーム（１）の部分でねじ止め等によシ取付けら
れている。このように車両用音響装置は、自動車の内外
装用のパネル部材（８）にドライバーＤが直接取付けら
れて、このパネル部材（８）の全体がそのまま音響振動
板として利用される。この音響振動板としては図示例の
ような自動車の内外装用部材の弛に居室の壁板等も利用
されるもので、このようなパネル部材（８）等は圧縮ダ
ンボール、またはベニヤ板等の材質からなシ一般にその
外縁部等で車体等に剛的に固定されている。Examples of conventional vehicle acoustic devices include those shown in Figs. 1 to 3 (Japanese Patent Application No. 135114/1983) First, Fig. 1 shows a driver D, which is an acoustic exciter. , a case body is constructed by fixing an excitation plate (2) and a cover plate (3) to both end faces of the front ridge (top and bottom in Figure 1) of a cylindrical frame +1), and an annular shape is attached to the center of the case body. The yoke (with
5) is provided. The yoke (5) is the pole piece (
5a) and yoke play (5b), these are integrated with the magnet (4) to form a magnetic circuit having an air gap, and the yoke play (5b) is connected to the damper (6) through the damper (6). It is elastically supported by the frame (1). In addition, a coil (7) wound around a bobbin is arranged in the above-mentioned gap, and the bobbin is used as an excitation play ) (
2) is fixed. Then, as shown in FIGS. 2 and 3, the driver D configured in this manner is screwed onto the back side of a panel member (8) forming a rubber cell or the like of an automobile at a portion of 7 frames (1). It is installed on the right. In this way, in the vehicle acoustic device, the driver D is directly attached to the interior/exterior panel member (8) of the automobile, and the entire panel member (8) is used as it is as an acoustic diaphragm. As this acoustic diaphragm, the interior and exterior parts of automobiles as shown in the illustration, as well as the wall panels of living rooms, etc., are used, and such panel members (8) are made of materials such as compressed cardboard or plywood. Generally, it is rigidly fixed to the vehicle body etc. at its outer edge.

そして音声信号がコイル（７）に通電されると、ダンパ
ー　（６）を介してマグネット（４）側と、フレーム（
１）側即ち加振プレート（２）側とが相対的に振動し、
との加振プレート（２）等の振動でパネル部材（８）が
加振されて低音域の再生がなされる。When the audio signal is energized to the coil (7), the magnet (4) side and the frame (
1) side, that is, the excitation plate (2) side, vibrates relatively,
The panel member (8) is vibrated by the vibration of the vibration plate (2) and the like, thereby reproducing the low frequency range.

しかしながらこのような従来のパネルスピーカにあって
は、パネル部材（８）の全体をそのまま音響振動板とし
て利用していたため、固定部を節とした板振動をして複
数個の固有共振点を有し、この固有共振によシ第４図の
再生周波数特性に示すように再生出力にピーク、ディッ
プが現われて適正な再生帯域幅が狭くなってしまうとい
う問題点があった。またパネル部材（８）の各部が異な
る位相で振動する分割振動が生じて出力音圧レベルが低
くなシ能率が低下するとともに過渡応答特性も悪いとい
う問題点があった。However, in such conventional panel speakers, the entire panel member (8) is used as an acoustic diaphragm, so the plate vibrates with the fixed part as a node and has multiple natural resonance points. However, due to this natural resonance, peaks and dips appear in the reproduction output, as shown in the reproduction frequency characteristics of FIG. 4, resulting in a problem that the appropriate reproduction bandwidth becomes narrow. Further, there is a problem in that split vibration occurs in which each part of the panel member (8) vibrates in different phases, resulting in a low output sound pressure level, a decrease in efficiency, and poor transient response characteristics.

この発明はこのような従来の問題点に着目してなされた
もので振動板として機能させる所要面積部位を取囲むよ
うにして適宜形状のスリットを複数条連設し、前記所要
面積部位に剛性等増大用の別途の振動板部材を貼設する
ことによシ上記問題点を解決する車両用音響装置を得る
ことを目的としている。This invention was made by focusing on such conventional problems, and a plurality of appropriately shaped slits are arranged in series to surround a required area area to function as a diaphragm, and a slit for increasing rigidity, etc. is provided in the required area area. It is an object of the present invention to provide a vehicle acoustic device that solves the above-mentioned problems by attaching a separate diaphragm member.

以下この発明を図面に基づいて説明する。第５図および
第６図はこの発明の実施例を示す図である。なお第５図
以下の各図において前記第１図〜第３図に示した部材ま
たは部位と同一ないし均等のものについては前記と同一
符号を以って示し重複した説明を省略する。The present invention will be explained below based on the drawings. FIG. 5 and FIG. 6 are diagrams showing an embodiment of the present invention. In each of the figures following FIG. 5, the same or equivalent members or parts as shown in FIGS. 1 to 3 are designated by the same reference numerals and redundant explanations will be omitted.

まず構成を説明するとこの発明においては音響用加振器
たるドライバーＤが取付けられた振動部（８ｂ）に剛性
等増大用の別途の振動板部材（１２ｍ）が貼設されて、
このパネル部材（８）からなる振動部（８ｂ）および振
動板部材（１２ａ）が一体となってパネルスピーカにお
ける振動板０２が構成されている。振動板部材（１２ａ
）としては振動部（８ｂ）の剛性および質量を増大させ
得るものであれば適宜材質のものでよく一例としてダイ
ラーク（商品名）等の積層材やＡｔ等の金属板が使用さ
れる。First, to explain the configuration, in this invention, a separate diaphragm member (12 m) for increasing rigidity, etc. is attached to the vibrating part (8b) to which the driver D, which is an acoustic exciter, is attached.
The vibrating section (8b) made of this panel member (8) and the diaphragm member (12a) are integrated to constitute the diaphragm 02 in the panel speaker. Vibration plate member (12a
) may be made of any suitable material as long as it can increase the rigidity and mass of the vibrating part (8b), and examples thereof include a laminated material such as Dilarc (trade name) and a metal plate such as At.

次に作用を説明する。音声信号がコイル（７）に通電さ
れると、ドライバーＤ内においてマグネット（４）側と
加振プレート（２）側とがダンパー（６）を介して相対
的に変位振動し、この振動で振動板０りが加振されて音
圧を発生し低音域の再生がなされる。このとき振動板（
ｌ渇けその質量および剛性がともに所要量増大されてい
るので、後述する最低共振周波数ｆａの表示式から明ら
かなようにこの最低共振周波数ｆ０が所要値だけ低下し
、振動板ａ３はこの最低共振周波数ｆ。以上の周波数で
ピストンモーション振動して音圧が発生する。したがっ
てその再生周波数特性は第７図実線で示すように低域再
生限界がさらに低域側に延びて広帯域でかつ平坦特性と
なシ、過渡応答特性が向上して全体として再生周波数特
性が改善される。Next, the effect will be explained. When an audio signal is energized to the coil (7), the magnet (4) side and the excitation plate (2) side are relatively displaced and vibrated within the driver D via the damper (6), and this vibration causes vibration. The plate is vibrated to generate sound pressure and reproduce the low frequency range. At this time, the diaphragm (
Since both the mass and rigidity of the diaphragm have been increased by the required amount, the minimum resonant frequency f0 is lowered by the required value, as is clear from the expression for the lowest resonant frequency fa described later, and the diaphragm a3 is lowered by the required value. Frequency f. The piston motion vibrates at frequencies above and generates sound pressure. Therefore, as shown by the solid line in Figure 7, the reproduction frequency characteristics are such that the low-frequency reproduction limit extends further to the low-frequency side, resulting in a wide band and flat characteristic.The transient response characteristics are improved, and the reproduction frequency characteristics are improved as a whole. Ru.

次に前記の最低共振周波数ｆ。の表示式を説明する。Next is the minimum resonant frequency f. The display formula will be explained.

いま町；振動板系の等画質量、ｋ１振動板系のバネ定数
、ｍ２ニドライバーのマグネット系質量、ｋ！；　ドラ
イバー（ダンパー）のバネ定数、ω＝２πｆとし、マグ
ネット系質量”２　Ｋ　ｌ’ｃｏｓω【、振動板系質量
用に−ｐｃｏｓωｔの加振力が作用したとすると、振動
板系質量用の運動を調べると運動方程式は、ｍ１ｄ”ｙ
ｃ１／ｄｔ”＋Ｊｘ３＋に２（Ｘ＋　Ｘ２）　＝−ＦＣ
ＯＳω１　　・・・０ｍ２ｄ２ｘ２／　ｄｔ２−１−　
ｋ２（ｘ２−　ｘｔ）　＝　Ｆｃｏｓωｔ　　　　…■
′となる。また強制振動を ｘ１＝ａｔｃｏｓωｊ　ｓ　ｘｔ＝ａｘａｓω’　（”
ｈａ２　；振幅）・・・■−ｊと仮定して、これを式■
に代入するとａ＋（および＋１２）が求められて ａ　Ｉ−Ｆ　ｍ２ωＶＣ（−町ω”十ｋ　＋　＋　ｋ　
２）（＝ｍ２ω”＋に＋）　　ｋｚ２）”・■となる。Nowadays: Isometric mass of the diaphragm system, k1 spring constant of the diaphragm system, m2 mass of the magnet system of the driver, k! ; If the spring constant of the driver (damper) is ω = 2πf, and the magnet system mass is ``2 K l'cosω[, and an excitation force of -pcosωt is applied to the diaphragm system mass, then the motion of the diaphragm system mass is The equation of motion is m1d"y
c1/dt”+Jx3+2(X+X2) =-FC
OSω1...0m2d2x2/ dt2-1-
k2(x2-xt) = Fcosωt…■
'. Also, the forced vibration is x1=atcosωj s xt=axasω' (”
ha2 ; amplitude) ... Assuming ■-j, this can be expressed as the formula ■
Substituting into , a+ (and +12) is obtained and a
2) (=m2ω”++) kz2)”・■.

ここで最低共振周波数ｆ０け振幅ａ１が無限大となると
き（機械抵抗がないと仮定）の周波数なので、上記■式
の分母を次のようにゼロとおき（−町ω”−１−Ｊ＋ｋ
ｚ）　（ｍ２ω２＋ｋｚ）　　ｋ２２＝　Ｏ”’■この
０式を満たすω（＝２πｆ）を求め、その２つの解のう
ち高い方の値と一致する。このようにして・・・■ との０式から最低共振周波数ｆ。は振動板系の等価質量
町およびそのバネ定数に、等に依存する。このため第５
図および第６図の事例においては撮動板０７Ｊが振動板
部材（１２ａ）の貼着てその質量が所要値だけ増大して
いるので上記０式から明らかなように、この増大によシ
逆に最低共振周波数ｆ。が所要値だけ低下するのである
。Here, since this is the frequency when the lowest resonance frequency f0 and the amplitude a1 are infinite (assuming there is no mechanical resistance), the denominator of the above formula
z) (m2ω2+kz) k22= O"'■ Find ω (=2πf) that satisfies this 0 formula, and match the higher value of the two solutions. In this way...■ 0 formula with The lowest resonant frequency f depends on the equivalent mass of the diaphragm system and its spring constant, etc. Therefore, the fifth
In the examples shown in Figures and Figure 6, the mass of the imaging plate 07J increases by the required value due to the attachment of the diaphragm member (12a). The lowest resonant frequency f. is reduced by the required value.

以上詳述したようにこの発明によれば振動板として機能
させる所要面積部位に剛性等増大用の別途の振動板部材
を貼設したから、低域再生限界がさらに低域側に延び、
かつ特性が平坦となって広帯域となシ、また過渡応答特
性が１ｈノ上して全体的に周波数特性が改善されるとい
う効果が得られる。As detailed above, according to the present invention, since a separate diaphragm member for increasing rigidity is attached to the area required to function as a diaphragm, the low frequency reproduction limit is further extended to the low frequency side.
In addition, the characteristics are flattened to provide a wide band, and the transient response characteristics are increased by 1 h, resulting in an overall improvement in frequency characteristics.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来の車両用音響装置におけるドライバ一部分
を示す一部断面側面図、第２図は従来の車両用音響装置
を示す平面図、第３図は同上車両用音響装置の側面図、
第４図は同上車両用音響装置の再生周波数特性を示す特
性曲線図、第５図はこの発明に係る車両用音響装置の実
施例を示す平面図、第６図は第５図の■−■線断面図、
第７図は同上実施例の再生周波数特性を示す特性曲線図
である。 ８：パネル部材　　　　８ｂ：振動部 １１　　；　ス　リ　ノ　ト　　　　　　　　　　　　
１１ａ　：　ピ　−　ム１２：振動板　　　　　　１２
ａ：振動板部材Ｖニドライバー（音響用加振器） クラリオン株式会も 日産自動車株式会を 代理人　芦　１）直　桶 第１図 第２図 第３図 第４図 第５図 １ 第６図 第７因FIG. 1 is a partially cross-sectional side view showing a portion of the driver in a conventional vehicle audio system, FIG. 2 is a plan view of the conventional vehicle audio system, and FIG. 3 is a side view of the same vehicle audio system.
FIG. 4 is a characteristic curve diagram showing the reproduction frequency characteristics of the above-mentioned vehicle audio device, FIG. 5 is a plan view showing an embodiment of the vehicle audio device according to the present invention, and FIG. 6 is a diagram showing ■-■ in FIG. 5. line cross section,
FIG. 7 is a characteristic curve diagram showing reproduction frequency characteristics of the same embodiment. 8: Panel member 8b: Vibrating section 11;
11a: Pim 12: Vibration plate 12
a: Vibration plate member V Nidriver (acoustic exciter) Clarion Co., Ltd. also represents Nissan Motor Co., Ltd. Ashi 1) Direct Oke Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 1 Figure 6 Seventh cause

Claims (1)

【特許請求の範囲】 車両の内外装パネル部材に音響用加振器を取シ付けてな
る車両用音響装置において、 前記パネル部材の音響用加振器取付は部を含む所要面積
部位を取囲むようにして適宜形状のスリットを複数条連
設し、前記所要面積部位に剛性等増大用の別途の振動板
部材を貼設してなることを特徴とする車両用音響装置。[Claims] In a vehicle acoustic device in which an acoustic vibrator is attached to an interior/exterior panel member of a vehicle, the acoustic vibrator is attached to the panel member by enclosing a required area including a portion. 1. A vehicle acoustic device characterized in that a plurality of appropriately shaped slits are arranged in series so that the slits are arranged in a row, and a separate diaphragm member for increasing rigidity is attached to the required area portion.
JP11988282A 1982-05-11 1982-07-12 Sound device for vehicle Granted JPS5911100A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP11988282A JPS5911100A (en) 1982-07-12 1982-07-12 Sound device for vehicle
US06/491,292 US4551849A (en) 1982-05-11 1983-05-03 Vehicle panel speaker for automotive audio system utilizing part of a vehicle panel as a sound-producing medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11988282A JPS5911100A (en) 1982-07-12 1982-07-12 Sound device for vehicle

Publications (2)

Publication Number Publication Date
JPS5911100A true JPS5911100A (en) 1984-01-20
JPS643436B2 JPS643436B2 (en) 1989-01-20

Family

ID=14772567

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11988282A Granted JPS5911100A (en) 1982-05-11 1982-07-12 Sound device for vehicle

Country Status (1)

Country Link
JP (1) JPS5911100A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008207622A (en) * 2007-02-23 2008-09-11 National Univ Corp Shizuoka Univ Sound information transmission device
US7907742B2 (en) 2003-10-31 2011-03-15 Fujitsu Ten Limited Exciter for directly vibrating board and speaker apparatus used the same
JP2020096213A (en) * 2018-12-10 2020-06-18 アルパイン株式会社 Acoustic vibrating device and sound producing apparatus using vibrating device
WO2024057821A1 (en) * 2022-09-14 2024-03-21 ソニーグループ株式会社 Display device and signal processing method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7907742B2 (en) 2003-10-31 2011-03-15 Fujitsu Ten Limited Exciter for directly vibrating board and speaker apparatus used the same
JP2008207622A (en) * 2007-02-23 2008-09-11 National Univ Corp Shizuoka Univ Sound information transmission device
JP4553394B2 (en) * 2007-02-23 2010-09-29 国立大学法人静岡大学 Audio information transmission device
JP2020096213A (en) * 2018-12-10 2020-06-18 アルパイン株式会社 Acoustic vibrating device and sound producing apparatus using vibrating device
WO2024057821A1 (en) * 2022-09-14 2024-03-21 ソニーグループ株式会社 Display device and signal processing method

Also Published As

Publication number Publication date
JPS643436B2 (en) 1989-01-20

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