JPH06351088A - Speaker cabinet - Google Patents
Speaker cabinetInfo
- Publication number
- JPH06351088A JPH06351088A JP13804193A JP13804193A JPH06351088A JP H06351088 A JPH06351088 A JP H06351088A JP 13804193 A JP13804193 A JP 13804193A JP 13804193 A JP13804193 A JP 13804193A JP H06351088 A JPH06351088 A JP H06351088A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- front plate
- sound pressure
- plate
- speaker
- 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.)
- Pending
Links
Landscapes
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はスピーカシステムのスピ
ーカキャビネットに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker cabinet of a speaker system.
【０００２】[0002]
【従来の技術】近年、オーディオ関連業界においては、
再生音楽ソース、音響機器のデジタル化により高品質な
音響信号の伝達が可能となり、それに伴い音響信号を忠
実に再生するスピーカシステムが望まれてきている。2. Description of the Related Art Recently, in the audio industry,
The digitization of reproduced music sources and audio equipment has made it possible to transmit high-quality acoustic signals, and accordingly, a speaker system that faithfully reproduces the acoustic signals has been desired.
【０００３】そして、特開昭６１−２８４１９７号公報
に、バッフル板および裏板を備え、長手方向の端部にア
ール加工を施した胴板をフオールディング加工して得ら
れるスピーカキャビネットの技術が開示されている。Japanese Unexamined Patent Publication (Kokai) No. 61-284197 discloses a speaker cabinet technology which includes a baffle plate and a back plate, and is obtained by performing a folding process on a body plate having rounded edges. Has been done.
【０００４】以下に図面を参照しながら、従来のスピー
カキャビネットについて説明する。図５に示すように、
従来のスピーカキャビネットは前面板５１と、前面板５
１の両側にテーパ部５２を介して側面板５３と、前面板
５１と対向した後面板５４と、前面板５１の中央部に備
えられたスピーカユニット取付部５５とを主体として構
成されている。A conventional speaker cabinet will be described below with reference to the drawings. As shown in FIG.
The conventional speaker cabinet has a front plate 51 and a front plate 5.
1 is mainly composed of a side plate 53 on both sides of the front plate 1 via a tapered portion 52, a rear plate 54 facing the front plate 51, and a speaker unit mounting portion 55 provided in the center of the front plate 51.
【０００５】上記構成において、スピーカユニット取付
部５５にスピーカユニットを取付け、電気信号を入力す
ることによりスピーカユニットから放射された音が、ス
ピーカキャビネットの角部で回折し発生する音波のレベ
ルをテーパー部５２を設けることにより抑える。その結
果回折により発生した音波とスピーカユニットの振動板
から放射された音波との干渉による音圧周波数特性の乱
れを抑制し、平坦な音圧周波数特性を実現している。In the above structure, when the speaker unit is attached to the speaker unit attaching portion 55 and an electric signal is inputted, the sound emitted from the speaker unit is diffracted at the corner portion of the speaker cabinet and the level of the sound wave generated is tapered. This is suppressed by providing 52. As a result, the disturbance of the sound pressure frequency characteristic due to the interference between the sound wave generated by diffraction and the sound wave emitted from the diaphragm of the speaker unit is suppressed, and a flat sound pressure frequency characteristic is realized.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら上記のよ
うなスピーカキャビネットでは、回折によって発生する
音波の大きさを十分低減することができないために、十
分な音圧周波数特性の乱れの改善を実現することができ
ない。従来例のスピーカボックスを用いたスピーカシス
テムの音圧周波数特性を示す図６において、周波数５０
０Ｈｚから１．５ＫＨｚにかけて特性が２．５ｄＢ程度
盛り上がっている。ここで周波数２ＫＨｚ以上の平坦な
特性における音圧値とピークにおける音圧値の差を音圧
周波数特性の平坦性を示す値とする。またテーパー部５
２によってバッフル板である前面板１の面積が狭くなる
ことにより低域特性の音圧レベル低下が生じる。However, since the loudspeaker cabinet as described above cannot sufficiently reduce the magnitude of the sound wave generated by the diffraction, it is necessary to sufficiently improve the disturbance of the sound pressure frequency characteristics. I can't. In FIG. 6 showing the sound pressure frequency characteristics of the speaker system using the speaker box of the conventional example, the frequency 50
The characteristic rises by about 2.5 dB from 0 Hz to 1.5 KHz. Here, the difference between the sound pressure value in the flat characteristic having a frequency of 2 KHz or more and the sound pressure value in the peak is taken as a value indicating the flatness of the sound pressure frequency characteristic. Also, the taper part 5
2 reduces the area of the front plate 1, which is a baffle plate, and thus lowers the sound pressure level of the low-frequency characteristic.
【０００７】本発明は上記問題点を解決するもので、低
域特性の音圧レベルを低下させることなく、平坦な音圧
周波数特性を実現するスピーカキャビネットを提供する
ことを目的とする。The present invention solves the above problems, and an object of the present invention is to provide a speaker cabinet which realizes a flat sound pressure frequency characteristic without lowering the sound pressure level of the low frequency characteristic.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するため
に、本発明のスピーカキャビネットは、楕円または単一
もしくは複数の円弧で構成される疑似楕円形状の断面形
状を有する楕円柱を基本形状とし、楕円柱の側面を楕円
柱の軸線方向に平行に切り欠いた面を前面板としたもの
である。In order to achieve the above object, the speaker cabinet of the present invention has an elliptic cylinder or an elliptic cylinder having a pseudo elliptical cross-sectional shape composed of a single or a plurality of arcs as a basic shape. The side surface of the elliptic cylinder is cut out parallel to the axial direction of the elliptic cylinder to form the front plate.
【０００９】[0009]
【作用】上記構成により、スピーカキャビネットの角部
における振動板から放射された音波の回折の大きさが小
さくなるために、回折により発生する音波と振動板から
放射される音波との干渉による音圧周波数特性の乱れを
抑えることが可能となり、さらに楕円柱で表される側面
板が疑似的なバッフル板となるために低域における音圧
レベルの低下をも抑えることが可能となる。With the above structure, since the magnitude of diffraction of the sound wave radiated from the diaphragm at the corner portion of the speaker cabinet becomes small, the sound pressure caused by the interference between the sound wave generated by the diffraction and the sound wave radiated from the diaphragm. It is possible to suppress the disturbance of the frequency characteristic, and further, since the side plate represented by the elliptic cylinder serves as a pseudo baffle plate, it is also possible to suppress the decrease in the sound pressure level in the low range.
【００１０】[0010]
【実施例】以下本発明の一実施例のスピーカキャビネッ
トについて図面を参照しながら説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A speaker cabinet according to an embodiment of the present invention will be described below with reference to the drawings.
【００１１】本発明の一実施例のスピーカキャビネット
を示す図１において、スピーカキャビネットは、その断
面形状が複数の円弧で構成された疑似楕円形状の断面形
状を有する楕円柱を基本形状とし、楕円柱の側面を楕円
柱の軸線方向に平行に切り欠いた面で構成される前面板
１と、複数の円弧の側面で構成される側面板２と、前面
板１の中央に設けられたスピーカユニット取付部３とを
主体として構成され、前面板１は幅１８ｃｍ、高さ３８
ｃｍで、スピーカユニット取付部３には口径１４ｃｍの
平板形スピーカユニットが取付けられている。Referring to FIG. 1 showing a speaker cabinet according to an embodiment of the present invention, the speaker cabinet has an elliptic cylinder as a basic shape having a pseudo elliptical sectional shape whose sectional shape is formed by a plurality of arcs. Of a front plate 1 formed by cutting out the side surface of the ellipse parallel to the axial direction of the elliptic cylinder, a side plate 2 formed by the side surfaces of a plurality of arcs, and a speaker unit mounted at the center of the front plate 1. The front plate 1 has a width of 18 cm and a height of 38.
In cm, the speaker unit mounting portion 3 is mounted with a flat plate type speaker unit having a diameter of 14 cm.
【００１２】以上のような構成で、スピーカユニット取
付部３に取り付けた平板形スピーカユニットに電気信号
が入力されると、振動板より音が放射されスピーカキャ
ビネットの角部で回折を起こすが、側面板２が疑似楕円
形状であるために、回折波のレベルは小さい。従って振
動板から直接放射される音波との干渉により起こる音場
の乱れは軽減される。本発明の一実施例のスピーカキャ
ビネットを用いたスピーカシステムの音圧周波数特性を
示す図２において、平坦性を示す値は１．８ｄＢと従来
より平坦な音圧周波数特性が実現できている。また側面
板２がバッフル板である前面板１に付加する形で疑似的
なバッフル板として働くために従来例と等しいバッフル
面積で低域特性の低下を約１．５ｄＢ抑えることができ
ている。When an electric signal is input to the flat panel type speaker unit mounted on the speaker unit mounting portion 3 with the above structure, sound is radiated from the diaphragm to cause diffraction at the corners of the speaker cabinet. Since the face plate 2 has a pseudo elliptical shape, the level of the diffracted wave is small. Therefore, the disturbance of the sound field caused by the interference with the sound waves directly emitted from the diaphragm is reduced. In FIG. 2, which shows the sound pressure frequency characteristics of the speaker system using the speaker cabinet of the embodiment of the present invention, the flatness value is 1.8 dB, which is flatter than the conventional value. Further, since the side plate 2 functions as a pseudo baffle plate in addition to the front plate 1 which is a baffle plate, it is possible to suppress the deterioration of the low frequency characteristic by about 1.5 dB with the same baffle area as the conventional example.
【００１３】本発明の一実施例のスピーカキャビネット
の平面を示す図３において、楕円柱側面である側面板２
と前面板１は図１と同様で、側面板２の接平面４と前面
板１との角度をθとする。In FIG. 3 showing the plane of the speaker cabinet of one embodiment of the present invention, the side plate 2 which is the side surface of the elliptic cylinder.
The front plate 1 is the same as in FIG. 1, and the angle between the tangential plane 4 of the side plate 2 and the front plate 1 is θ.
【００１４】以上のような角度θをスピーカキャビネッ
ト形状の変数としたときのスピーカシステムの特性につ
いて説明する。The characteristics of the speaker system when the angle θ is used as a variable of the speaker cabinet shape will be described.
【００１５】スピーカキャビネットの前面板１の面積と
容積を固定し、側面板２と前面板１の角度θを可変しな
がら、それぞれの音圧周波数特性の平坦性を求める。While the area and volume of the front plate 1 of the speaker cabinet are fixed and the angle θ between the side plate 2 and the front plate 1 is varied, the flatness of each sound pressure frequency characteristic is obtained.
【００１６】側面板２と前面板１との角度θと、スピー
カシステムの音圧周波数特性の平坦性を示す図４におい
て、横軸に角度θ、縦軸に平坦性を示している。図４よ
り角度θと平坦性は比例せず、より平坦な音圧周波数特
性を実現するためには最適な角度θが１３５ないし１５
０度であることがわかる。In FIG. 4 showing the angle θ between the side plate 2 and the front plate 1 and the flatness of the sound pressure frequency characteristic of the speaker system, the horizontal axis shows the angle θ and the vertical axis shows the flatness. From FIG. 4, the angle θ is not proportional to the flatness, and the optimum angle θ is 135 to 15 in order to realize a flatter sound pressure frequency characteristic.
It can be seen that it is 0 degree.
【００１７】以上のように本実施例によれば、楕円柱か
らなるスピーカキャビネットを対向する円弧で構成され
る疑似楕円形状の側面板２と前面板１で構成することに
より、平坦な音圧周波数特性と低域特性低下の抑制を実
現することができる。さらに側面板２の接平面４と前面
板１との角度θが１３５〜１５０度であれば、より平坦
な音圧周波数特性を実現できる。As described above, according to the present embodiment, the speaker cabinet formed of the elliptic cylinder is constructed by the side plate 2 and the front plate 1 each having a pseudo elliptical shape formed by facing arcs. It is possible to realize the reduction of the characteristics and the low frequency characteristic. Further, if the angle θ between the tangential plane 4 of the side plate 2 and the front plate 1 is 135 to 150 degrees, a flatter sound pressure frequency characteristic can be realized.
【００１８】なお、側面板を疑似楕円形状を直線近似し
たもので構成してもよく、前面板との接続部はアールを
とってもよい。また前面板を長方形形状としたが、多角
形、楕円、疑似楕円形状としてもよい。The side plate may be formed by linearly approximating a pseudo elliptical shape, and the connecting portion with the front plate may be rounded. Although the front plate has a rectangular shape, it may have a polygonal shape, an elliptical shape, or a pseudo elliptical shape.
【００１９】[0019]
【発明の効果】以上の説明により明かなように本発明の
スピーカキャビネットによれば、単一または複数の円弧
で構成される楕円または疑似楕円形状の断面形状を有す
る楕円柱を基本形状とし、楕円柱の側面を楕円柱の軸線
方向に平行に切り欠いた面を前面板とするスピーカキャ
ビネットを用いることにより、低域特性の低下を抑制し
た平坦な音圧周波数特性を有するスピーカシステムを実
現できるものである。As apparent from the above description, according to the speaker cabinet of the present invention, an elliptic cylinder having an elliptical or pseudo-elliptical cross-sectional shape composed of a single arc or a plurality of arcs is used as a basic shape, and an ellipse is used. A speaker system having a flat sound pressure frequency characteristic that suppresses deterioration of low-frequency characteristics can be realized by using a speaker cabinet in which a front plate is a surface in which a side surface of a pillar is cut out in parallel with an axial direction of an elliptic cylinder. Is.
【図１】本発明の一実施例のスピーカキャビネットの斜
視図FIG. 1 is a perspective view of a speaker cabinet according to an embodiment of the present invention.
【図２】本発明の一実施例のスピーカキャビネットを用
いたスピーカシステムの音圧周波数特性を示すグラフFIG. 2 is a graph showing sound pressure frequency characteristics of a speaker system using a speaker cabinet according to an embodiment of the present invention.
【図３】本発明の一実施例のスピーカキャビネットの平
面図FIG. 3 is a plan view of a speaker cabinet according to an embodiment of the present invention.
【図４】本発明の一実施例のスピーカキャビネットの側
面板と前面板との角度と音圧周波数特性の平坦性との関
係を示すグラフFIG. 4 is a graph showing the relationship between the angle between the side plate and the front plate of the speaker cabinet of one embodiment of the present invention and the flatness of the sound pressure frequency characteristic.
【図５】従来のスピーカキャビネットの斜視図FIG. 5 is a perspective view of a conventional speaker cabinet.
【図６】従来のスピーカキャビネットを用いたスピーカ
キャビネットの音圧周波数特性を示すグラフFIG. 6 is a graph showing sound pressure frequency characteristics of a speaker cabinet using a conventional speaker cabinet.
１ 前面板 ２ 側面板 ３ スピーカユニット取付部 1 Front plate 2 Side plate 3 Speaker unit mounting part
Claims (2)
される疑似楕円形状の断面形状を有する楕円柱を基本形
状とし、前記楕円柱の側面を前記楕円柱の軸線方向に平
行に切り欠いた面を前面板としたスピーカキャビネッ
ト。1. An ellipse or an elliptic cylinder having a pseudo-elliptical cross-sectional shape composed of a single arc or a plurality of arcs is used as a basic shape, and a side surface of the ellipse is cut out in parallel with an axial direction of the ellipse. A speaker cabinet whose front surface is the front panel.
５〜１５０度の角度で構成された請求項１記載のスピー
カキャビネット。2. The front plate is 13 with respect to the tangent plane of the side of the elliptic cylinder.
The speaker cabinet according to claim 1, wherein the speaker cabinet is formed at an angle of 5 to 150 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13804193A JPH06351088A (en) | 1993-06-10 | 1993-06-10 | Speaker cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13804193A JPH06351088A (en) | 1993-06-10 | 1993-06-10 | Speaker cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06351088A true JPH06351088A (en) | 1994-12-22 |
Family
ID=15212641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13804193A Pending JPH06351088A (en) | 1993-06-10 | 1993-06-10 | Speaker cabinet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06351088A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7013020B2 (en) | 2003-05-29 | 2006-03-14 | Yamaha Corporation | Speaker cabinet |
| US7604091B2 (en) * | 2007-06-13 | 2009-10-20 | Plantronics, Inc. | Asymmetric and continuously curved speaker driver enclosure to optimize audio fidelity |
-
1993
- 1993-06-10 JP JP13804193A patent/JPH06351088A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7013020B2 (en) | 2003-05-29 | 2006-03-14 | Yamaha Corporation | Speaker cabinet |
| US7604091B2 (en) * | 2007-06-13 | 2009-10-20 | Plantronics, Inc. | Asymmetric and continuously curved speaker driver enclosure to optimize audio fidelity |
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