JPS58164397A - Speaker unit - Google Patents
Speaker unitInfo
- Publication number
- JPS58164397A JPS58164397A JP4756882A JP4756882A JPS58164397A JP S58164397 A JPS58164397 A JP S58164397A JP 4756882 A JP4756882 A JP 4756882A JP 4756882 A JP4756882 A JP 4756882A JP S58164397 A JPS58164397 A JP S58164397A
- Authority
- JP
- Japan
- Prior art keywords
- speakers
- input impedance
- cabinet
- sound
- changeover switch
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
Landscapes
- Health & Medical Sciences (AREA)
- General 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)
- Circuit For Audible Band Transducer (AREA)
Abstract
Description
【発明の詳細な説明】 のである。[Detailed description of the invention] It is.
従来のこの種のスピーカ装置としては第１図に示すよう
に構成されていた。A conventional speaker device of this type was constructed as shown in FIG.
すなわち、背板１、両側板２，３、中央に背板１と平行
な部分をもち、この中央部４の両側に知斜部６，６をも
った前面板７により構成されたキャビネット８の両傾斜
部６，６、中央部４にそれぞれスピーカ９，１０，１１
を堆付け、スピーカ９は左側エリアに音を放射し、スピ
ーカ１０は右側エリアに音を放射し、スピーカ１１は中
央エリアに音を放射するように構成されていた。That is, the cabinet 8 is made up of a back plate 1, side plates 2 and 3, and a front plate 7 having a part parallel to the back plate 1 in the center and angled parts 6 and 6 on both sides of the central part 4. Speakers 9, 10, 11 are provided on both inclined parts 6, 6 and in the central part 4, respectively.
The speaker 9 was configured to radiate sound to the left area, the speaker 10 radiate sound to the right area, and the speaker 11 radiate sound to the center area.
このような構成とすることによりて、音の放射範囲は第
１図のム−Ｂの範囲と広くなり、一般的なスピーカ装置
に対して左右方向に音の放射範囲が広く、パブリックア
ドレス装置として広く用いられていた。With this configuration, the sound radiation range is widened to the range of Mo-B in Figure 1, and the sound radiation range is wide in the left and right direction compared to a general speaker device, making it suitable for use as a public address device. It was widely used.
しかしながら、このスピーカ装置を比較的狭い部屋で使
用すると、音の放射範囲が広くなりすぎて壁反射による
間接音のパワー比率が大きくなりすぎて音声明瞭度が悪
化したり、このスピーカ装置に接続されたマイクのハウ
リングマージンが低下したりして悪影響を及ぼすことが
多いものであった。However, if this speaker device is used in a relatively small room, the sound radiation range will become too wide and the power ratio of indirect sound due to wall reflection will become too large, resulting in poor speech intelligibility. This often has an adverse effect, such as reducing the howling margin of the microphone.
本発明は以上のような従来の欠点を除去するものであり
、音場の広さに応じた指向特性をもつよ：、ニアτ：ニ
ニ：二″″””′″“°“ｉ上記目的を達成するために
本発明部、３つのスピーカを組込んだキャビネットの外
にスピーカへの入力を切換える切換スイッチ機構と、こ
の切換スイッチ機構の切換状態に応じて入力インピーダ
ンスを調整する入力インピーダンス整合機構を設けた構
成としたものである。The present invention eliminates the above-mentioned drawbacks of the conventional technology, and has directional characteristics according to the width of the sound field. In order to achieve this, the present invention provides a changeover switch mechanism that switches the input to the speakers outside the cabinet incorporating three speakers, and an input impedance matching mechanism that adjusts the input impedance according to the switching state of this changeover switch mechanism. The configuration includes the following.
以下、本発明の実施例を図面第２図により説明する。Embodiments of the present invention will be described below with reference to FIG. 2.
１２はキャビネットで、このキャビネット１２は木拐９
合成樹脂、金桐などによって背板１３、この背板１３の
両端に両側板１４．１５、この両側板１４．１５間に前
面板１６が存在するように構成され、前面板１６は中央
に背板１３と平行な中央部１６＆を有し、この中央部１
６＆の両側に傾斜部１６ｂ、１６ｅを設けた構成となっ
ておゆ、ギヤビネット１２の横断面は変形六角形状とな
つこのキャビネット１２の前面板１６の中央部１６ａに
は中央エリアに音を放射するスピーカ１７が取付けられ
、傾斜部１６ｂには左側エリアに音を放射するスピーカ
１８が取付けられ、傾斜部１６０には右側エリアに音を
放射するスピーカ１９が取付けられている。これらのス
ピーカ１７〜１９はキャビネット１２の外部に設けられ
る切換スイスイッチ機構２０の切換ポジションにおける
アンプ側からみた入力インピーダンスが大きく変らない
ようにする入力インピーダンス整合機構２１に接続され
、この入力インピーダンス整合機構２１には入力信号源
が接続されている。12 is a cabinet, and this cabinet 12 is made of wood 9
It is constructed of a back plate 13 made of synthetic resin, paulownia wood, etc., side plates 14.15 at both ends of the back plate 13, and a front plate 16 between the both side plates 14.15. It has a central part 16& parallel to the plate 13, and this central part 1
The cross section of the gear vignette 12 has a modified hexagonal shape, and the central part 16a of the front plate 16 of the cabinet 12 radiates sound to the central area. A speaker 17 is attached, a speaker 18 that emits sound to the left area is attached to the inclined part 16b, and a speaker 19 that emits sound to the right area is attached to the inclined part 160. These speakers 17 to 19 are connected to an input impedance matching mechanism 21 that prevents the input impedance seen from the amplifier side from changing greatly at the switching position of the changeover switch mechanism 20 provided outside the cabinet 12. 21 is connected to an input signal source.
この構成とすることにより、全部のスピーカ１７〜１９
を鳴らしたり、いずれか１個のスピーカを鳴らしたり、
スピーカ１７と１８あるいはスピーカ１７と１９、さら
にはスピーカ１８と１９の２個のスピーカを鳴らしたり
する選択を切換スイッチ機構２０で行い、その切換状態
に応じて入力インピーダンスを入力インピーダンス整合
機構２１で調整することができる。すなわち、Ａ−Ｂの
範囲からＡ−０，ム−Ｄ 、 Ｃ−Ｄ 、 Ｃ−Ｂ 、
Ｄ−Ｄ、さらにはム−ＣとＤ −Ｈの範囲の音の放射
範囲を選択できる。With this configuration, all speakers 17 to 19
or one of the speakers,
The selector switch mechanism 20 selects whether the two speakers 17 and 18, the speakers 17 and 19, or even the speakers 18 and 19 will sound, and the input impedance is adjusted by the input impedance matching mechanism 21 according to the switching state. can do. That is, from the range of A-B, A-0, Mu-D, CD, C-B,
The sound emission range can be selected from D-D, and further from M-C to D-H.
なお、入力インピーダンス整合機構としては、各切換ポ
ジションのインピーダンスに相当するタップを有する出
力変成器を用いることもできる。Note that as the input impedance matching mechanism, an output transformer having taps corresponding to the impedance of each switching position can also be used.
以上のように本発明のスピーカ装置は構成されるため、
キャビネットの外部で鳴らすスピーカの位置と数を自由
に選択でき、音場の広さや使用する方法によって音の放
射範囲を広くしたり狭くしたりでき音場にマツチした最
良の反射音比率が得られ、音声明瞭−に優れ、また、マ
イクロポンの・・ウリングマージンも大きくとれ、入力
インピーダンス整合機構によりインピーダンス変化を伴
うエネルギーロスも低下できるなどの利点をもち、工業
的価値の大なるものである。Since the speaker device of the present invention is configured as described above,
You can freely select the location and number of speakers that play outside the cabinet, and depending on the width of the sound field and the method of use, you can widen or narrow the sound radiation range and obtain the best reflected sound ratio that matches the sound field. It has great industrial value because it has excellent voice clarity, a large micropon ring margin, and an input impedance matching mechanism that reduces energy loss due to impedance changes.
第１図は従来のスピーカ装置を示す横断面図、第２図は
本発明のスピーカ装置の一実施例を示す横断面図である
。
１２・−・・・・キャビネット、１３・山・・背板、１
４゜１６・・・・・・側板、１６・・・・・・前面板、
１６＆・・・・・・中央部、１６ｂ、１６０・山・・傾
斜部、１７ 、１８ 、１９・・・・・・スピーカ、２
ｏ・・・・・・切換スイッチ機構、２１・・・・・・入
力インピーダンス整合機構。FIG. 1 is a cross-sectional view showing a conventional speaker device, and FIG. 2 is a cross-sectional view showing an embodiment of the speaker device of the present invention. 12...Cabinet, 13.Mountain...Backboard, 1
4゜16...Side plate, 16...Front plate,
16 &...Central part, 16b, 160・Mountain...Slope part, 17, 18, 19...Speaker, 2
o: Changeover switch mechanism, 21: Input impedance matching mechanism.
Claims (1)
全もつ前面板によって構成されるキャビネットを備え、
このキャビネットの前面板の中央部に中央エリアに音を
放射するスピーカを、両傾斜部に左側と右側のエリアに
音を放射するスピーカを取付け、このそれぞれのスピー
カをキャビネット外に設けた切換スイッチ機構並びにこ
の切換スイッチ機構の切換状態に応じて入力インピーダ
ンスを調整する入力インピーダンス整合機構に接続して
なるスピーカ装置。Equipped with a cabinet consisting of a back plate, side plates, and a front plate with sloped parts on both sides of the central part parallel to the back plate,
A speaker that radiates sound to the central area is installed in the center of the front panel of this cabinet, and speakers that radiate sound to the left and right areas are installed on both slopes, and each speaker is installed outside the cabinet with a changeover switch mechanism. and a speaker device connected to an input impedance matching mechanism that adjusts input impedance according to the switching state of the changeover switch mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4756882A JPS58164397A (en) | 1982-03-24 | 1982-03-24 | Speaker unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4756882A JPS58164397A (en) | 1982-03-24 | 1982-03-24 | Speaker unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58164397A true JPS58164397A (en) | 1983-09-29 |
Family
ID=12778827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4756882A Pending JPS58164397A (en) | 1982-03-24 | 1982-03-24 | Speaker unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58164397A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2621771A1 (en) * | 1987-10-09 | 1989-04-14 | Hellmann Spezialprodukte Joach | Device for producing sound signals, especially for deterrent use in relation to noxious animals |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51122425A (en) * | 1975-04-18 | 1976-10-26 | Hitachi Ltd | Speaker system |
-
1982
- 1982-03-24 JP JP4756882A patent/JPS58164397A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51122425A (en) * | 1975-04-18 | 1976-10-26 | Hitachi Ltd | Speaker system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2621771A1 (en) * | 1987-10-09 | 1989-04-14 | Hellmann Spezialprodukte Joach | Device for producing sound signals, especially for deterrent use in relation to noxious animals |
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