JPS6372299A - Audio equipment - Google Patents

Audio equipment

Info

Publication number
JPS6372299A
JPS6372299A JP61216219A JP21621986A JPS6372299A JP S6372299 A JPS6372299 A JP S6372299A JP 61216219 A JP61216219 A JP 61216219A JP 21621986 A JP21621986 A JP 21621986A JP S6372299 A JPS6372299 A JP S6372299A
Authority
JP
Japan
Prior art keywords
speaker
speaker unit
amplifier
channel
differential user
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
JP61216219A
Other languages
Japanese (ja)
Other versions
JPH0724439B2 (en
Inventor
Isamu Hirose
広瀬　勇
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to JP61216219A priority Critical patent/JPH0724439B2/en
Priority to GB8721451A priority patent/GB2195218B/en
Priority to KR1019870010062A priority patent/KR910006469B1/en
Priority to AU78288/87A priority patent/AU593683B2/en
Publication of JPS6372299A publication Critical patent/JPS6372299A/en
Priority to US07/604,340 priority patent/US5173942A/en
Priority to HK793/91A priority patent/HK79391A/en
Publication of JPH0724439B2 publication Critical patent/JPH0724439B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • H04R5/00—Stereophonic arrangements
    • 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
    • H04R5/00—Stereophonic arrangements
    • H04R5/02—Spatial or constructional arrangements of loudspeakers

Abstract

PURPOSE:To identify sound from an individual speaker with simple constitution by fitting a diffuser at a position facing the speaker in front of the aperture attachably and detachably and giving a compensation circuit for output level and frequency characteristic to an amplifier of a channel. CONSTITUTION:The diffuser 3 is placed on the front face of the aperture B of the speaker unit fitted with a speaker 1 and fitted at a distance (g) from the front face of the speaker unit 2 to the top of the diffuser 3 so that the diffuser faces the speaker 1 and its center axis l2 is made coincident with the center axis l1 of the speaker 1. The speaker 1 is driven individually by the output of the amplifier of plural channels. The amplifier includes the compensation circuit compensating the output level and the frequency characteristic at each channel.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、オーディオ装置に関する。[Detailed description of the invention] Industrial applications The present invention relates to an audio device.

背景技術 従来の又テレオ装置では第７図示のように、スピーカ３
１．３２が収容された少なくとも２個のスビーカユニッ
）３３．３４を、間隔りをおいて左右に配置し、図示し
ない聴取者は当該スビーカユニツ）３３．３４に相対し
、かつ左右のスピーカユニット３３．３４の前面を結−
門うインノ５の上記間隔りを２分するラインノロ上の位
置で、左右のスピーカ３１．３２からの音を聴取する。BACKGROUND TECHNOLOGY In conventional stereo equipment, as shown in FIG.
At least two speaker units (33.34) each containing a speaker unit (33.32) are arranged on the left and right with an interval between them. Tie the front of 34.
The sound from the left and right speakers 31 and 32 is heard at a position on the line that bisects the above-mentioned interval of the gate inno 5.

実際にはスピーカ３１．３２の個々について良好な聴取
特性が得られるのは、スピーカ３１，３２の中心軸であ
るライン！？、　ノ８を中心とする角度αに含まれる平
面内であり、ステレオの場合は上記二つの平面が交差す
る平面Ａ　（斜線を付して示す）内に位置すれば、良好
なステレオ効果が得られるとされている。In reality, it is the line ! which is the central axis of the speakers 31 and 32 that provides good listening characteristics for each of the speakers 31 and 32. ? , within the plane included in the angle α centered at 8, and in the case of stereo, a good stereo effect can be obtained if it is located within plane A (shown with diagonal lines) where the above two planes intersect. It is said that

第７図において聴取者の位置を点Ｐとすれば、上記ライ
ンノ５と点Ｐの間の距ｆｉＦは、左右に配ｒ！１された
スピーカユニッ）３３，３４の間隔りと、スピーカの最
良聴取範囲である角度ａによって定まる。角度αはまた
スピーカの口径によってら異なワ、口径１２ｃｍのスピ
ーカにあっては上記角度αはたとえば３０”である。In FIG. 7, if the listener's position is point P, then the distance fiF between the line No. 5 and point P is equal to r! It is determined by the distance between the speaker units 33 and 34 and the angle a, which is the best listening range of the speakers. The angle α also varies depending on the diameter of the speaker; for a speaker with a diameter of 12 cm, the angle α is, for example, 30”.

発明が解決しようとする問題点 上述のようなステレオ装置では、スピーカ３１゜３２か
らの音が良好に聴取できる範囲は者しく限定されたもの
になる。ステレオの厳密な定義に従えば、聴取者は前掲
＃ｆＪＴ図に示された平面Ａ内の位置において聴取する
ことが要求されるけれども、一方ではそれとは別に、聴
取範囲を広げて、一つの音源の中心軸を半径とする平面
で形成される音響空間、たとえばＰｔ５Ｓ図に示される
ように、スピーカ４１の中心軸！８を延長した直線Ｘ−
Ｘおよびこれと直交する直線Ｙ−Ｙとを含む平面Ｂ内で
、スピーカ４１からの音が良好に聴取できることが望ま
れる場合も多い。Problems to be Solved by the Invention In the stereo system as described above, the range in which the sounds from the speakers 31 and 32 can be heard well is clearly limited. According to the strict definition of stereo, the listener is required to listen from a position within the plane A shown in the #fJT diagram above, but on the other hand, the listening range can be widened and a single sound source can be heard. An acoustic space formed by a plane whose radius is the central axis of the speaker 41, for example, as shown in the Pt5S diagram, the central axis of the speaker 41! Straight line X- which is an extension of 8
In many cases, it is desired that the sound from the speaker 41 can be heard well within a plane B including X and a straight line Y-Y perpendicular to the plane B.

言い替えれば２次元平面内での無指向性スピーカが望ま
れており、このようなスピーカを少な（とも２個適当な
間隔をおいて室内に配置すれば、その室内の自由な位置
で当該スピーカからの音を識別して聞くことができ、従
来のステレオ装置とは異なった音響効果を生み出す、現
今の日常生活の感覚と環境下では、一方でこのようない
わば「自由な音響空間」を生み出すオーディオ装置が所
望されている。In other words, omnidirectional speakers within a two-dimensional plane are desired, and if a small number of such speakers (two of them are placed at appropriate intervals in a room), it is possible to hear from the speaker at any position in the room. In today's daily life senses and environments, where sounds can be identified and heard and produce acoustic effects different from those of conventional stereo devices, on the other hand, audio creates such a ``free acoustic space,'' so to speak. A device is desired.

しかしながら第８図に示されるように、スピーカ４１の
中心軸！８を聴取者の正面に向けたのでは、上記のよう
な無指向性スピーカを実現することはできない、従来は
このような目的に適うもの゛として、たとえば複数個の
スピーカをボール状に形成されたスビーカユニツ）内に
収容し、該スピーカユニットを中心とする空間内の全方
向に音を放射する「無指向性・球形スピーカ」が提唱さ
れているが、これは多数のスピーカを必要とすること、
スピーカユニットの製作コストが高いことなどの問題点
があり、また該スピーカユニットの配置にあたり、その
位置と支持方法についての配慮が要求され、簡単に用い
ることはできなかった。However, as shown in FIG. 8, the center axis of the speaker 41! 8 facing the front of the listener, it is not possible to realize an omnidirectional speaker as described above. Conventionally, as a device suitable for this purpose, for example, a plurality of speakers formed in a ball shape has been used. An ``omnidirectional, spherical speaker'' has been proposed that is housed in a speaker unit and emits sound in all directions within a space centered on the speaker unit, but this requires a large number of speakers. ,
There are problems such as the high manufacturing cost of the speaker unit, and when arranging the speaker unit, consideration must be given to its position and support method, making it difficult to use easily.

したがって本発明の目的は、上述の技術的問題点を解決
し、簡単なり！を戊により、少なきとも２個のスピーカ
ユニットを含む平面内にあって、個々のスピーカからの
音をチャネル別に識別可能で、かつ良好に聴取できるオ
ーディオ装置を提供することである。Therefore, the object of the present invention is to solve the above-mentioned technical problems and to simplify it! Another object of the present invention is to provide an audio device that is located in a plane including at least two speaker units, allows sounds from individual speakers to be discriminated by channel, and can be listened to satisfactorily.

間厘点を解決するための手段 本発明は、複数チャネルの増幅器と、 上記複数チャネルの増幅器の出力によって個別的に駆動
されるスピーカがそれぞれ収容された少なくとも２個の
スピーカユニットとによって構成されるオーディオ装置
！！であって、 スピーカユニット１２は、その開口部前面においてスピ
ーカを臨む位置に、デフユーザが着脱自在に取付けられ
、 上記増幅器は、デフユーザ使用にあたり、その出力レベ
ルと周波数特性とをチャネル毎にする補償回路を含むこ
とを特徴とするオーディオ装置である。Means for Solving the Interference Point The present invention is constituted by a multi-channel amplifier and at least two speaker units each housing a speaker individually driven by the output of the multi-channel amplifier. Audio equipment! ! The speaker unit 12 is detachably attached to a differential user at a position facing the speaker in front of the opening thereof, and the amplifier is provided with a compensation circuit that adjusts the output level and frequency characteristics for each channel when used as a differential user. An audio device characterized by including:

作　　用 本発明に従うオーディオ装置は、複数チャネルの増幅器
と、上記複数チャネルの増幅器の出力によって個別的に
駆動されるスピーカが収容された少なくとも２個の入ビ
ーカニニットとによって構成される。Operation The audio device according to the present invention includes a plurality of channel amplifiers and at least two in-beaker units housing speakers that are individually driven by the outputs of the plurality of channel amplifiers.

スピーカユニット１２は、その開口部！前面において、
スピーカを臨む位置にデフユーザが着脱自在に取付けら
れ、上記増幅器はデフユーザ使用にあたり、その出力レ
ベルと周波数特性とをチャネル毎にする補償回路を含む
。The speaker unit 12 is the opening! In the front,
A differential user is removably attached to a position facing the speaker, and the amplifier includes a compensation circuit that adjusts the output level and frequency characteristics for each channel when used as a differential user.

スピーカユニットの開口部前面にデフユーザを取付け、
スピーカからの音波をデフユーザの反射面で拡散させ、
スピーカの中心軸の軸線まわりの平面内に音波を放射さ
せる。また増幅器にはデフユーザの使用にあたって、音
圧レベルと周波数特性とを補正する補償回路を含むよう
にする。したがってスピーカの中心軸を上方に向ければ
、スピーカの中心軸の紬＃Ｘ＊わワの平面内において無
指向性のオーディオ装置が実現される。上記デフユーザ
はスピーカユニットに着脱自在に取付けられるので、デ
フユーザを取外してスピーカの中心軸を正面すなわち聴
取者の方に向ければ従来のスピーカユニットと同様にし
て使用できる。Attach the differential user to the front of the speaker unit opening.
The sound waves from the speaker are diffused by the reflective surface of the differential user,
Sound waves are radiated in a plane around the central axis of the speaker. Furthermore, the amplifier includes a compensation circuit for correcting the sound pressure level and frequency characteristics when used by a differential user. Therefore, if the central axis of the speaker is directed upward, an omnidirectional audio device can be realized within the plane of #X*Wawa of the central axis of the speaker. Since the differential user is detachably attached to the speaker unit, it can be used in the same manner as a conventional speaker unit by removing the differential user and directing the central axis of the speaker toward the front, that is, toward the listener.

実施例 第１図は、本発明の一実施例のスピーカユニットとデフ
ユーザとの構成を示す断面図である。スピーカ１が取付
けられたスピーカユニット２には、デフユーザ３がスピ
ーカユニット２の開口部Ｂの前面であって、かつスピー
カ１を臨みその中心軸！２がスピーカ１の中心軸ノ１と
一致するように、図示しない取付は部材によって、スピ
ーカユニット２の前面からデフユーザ３の頂部までの間
隔ｇをおいて取付けられる。Embodiment FIG. 1 is a sectional view showing the structure of a speaker unit and a differential user according to an embodiment of the present invention. In the speaker unit 2 to which the speaker 1 is attached, the differential user 3 is located in front of the opening B of the speaker unit 2, facing the speaker 1, and facing the center axis of the speaker unit 2. The speaker unit 2 is mounted with a member (not shown) at a distance g from the front surface of the speaker unit 2 to the top of the differential user 3 so that the speaker unit 2 coincides with the center axis 1 of the speaker 1.

間隔ｇはスピーカ１の口径と、開口部Ｂの薄日直径など
で定まり、使用スピーカ１の口径がたとえば１２ｃｍの
場合たとえば１ｃ１１である。こうして形成されるスピ
ーカユニット２とデフユーザ３とから成る構成体を以下
、スピーカシステム４と記す、スピーカシステム４を第
１図示のように上向きに設置すると、スピーカ１の振動
面１ａからの音波は、デフユーザ３の反射面５に上り又
射され、進路がラインＪ：！３．Ｊ！４のようにデフユ
ーザ３の中心軸ノ２に対して９０度曲げられる。したが
ってスピーカ１からの音は、中心軸Ｊ！２に閃して半径
方向外方に伝達され、中心軸Ｊ！２の細線に垂交する平
面についての無指向性スピーカが実現される。The distance g is determined by the diameter of the speaker 1 and the diameter of the opening B, and is, for example, 1c11 when the diameter of the speaker 1 used is 12 cm. The structure composed of the speaker unit 2 and the differential user 3 thus formed is hereinafter referred to as a speaker system 4. When the speaker system 4 is installed facing upward as shown in the first diagram, the sound waves from the vibration surface 1a of the speaker 1 are It goes up to the reflective surface 5 of the differential user 3 and is shot again, and the course is on the line J:! 3. J! 4, it is bent at 90 degrees with respect to the central axis 2 of the differential user 3. Therefore, the sound from speaker 1 is centered on the center axis J! 2 and is transmitted radially outward, central axis J! An omnidirectional speaker is realized in a plane perpendicular to the two thin lines.

第２図は本発明の一実施例のデフユーザ３の斜視図であ
る。ハイインバク）スチロール又はカルブ材などの合成
樹脂によって一体的に形成される。FIG. 2 is a perspective view of a differential user 3 according to an embodiment of the present invention. It is integrally formed from synthetic resin such as styrene or carbwood.

デフユーザ３の反射面５と基台６との一辺りの長さは、
対応するスピーカ（図示せず）の口径によって異なるけ
れども、口径１２ｃｍのスピーカと１■合わせる場合、
上記りはたとえば２３ｃｍである。基台６の面上から反
射面５の頂部７までの高さ１１はたとえば４．２ｃ論で
ある。反射面５の底部５ａの直径ｄはたとえば１７．５
ｃ糟であり、また反射面５の曲縁の形状は、図示しない
スピーカユニット２からデフユーザ３までの距離すなわ
ち前述の間隔ｇ５あるいはスピーカユニット２の音ｆｆ
　４．ｉ性によって異なり、これらは実際の構成態様と
特性試験のデータなどに基づきコンピュータを用いての
シュミレーションなどによって最良の形状に決定される
。The length of the reflecting surface 5 of the differential user 3 and the base 6 is as follows:
Although it depends on the diameter of the corresponding speaker (not shown), when matching with a speaker with a diameter of 12 cm,
The height above is, for example, 23 cm. The height 11 from the surface of the base 6 to the top 7 of the reflective surface 5 is, for example, 4.2 cm. The diameter d of the bottom 5a of the reflective surface 5 is, for example, 17.5.
Moreover, the shape of the curved edge of the reflective surface 5 is determined by the distance from the speaker unit 2 (not shown) to the differential user 3, that is, the above-mentioned interval g5, or the sound ff of the speaker unit 2.
4. The shape differs depending on the characteristics, and the best shape is determined by computer simulation based on the actual configuration and data of characteristic tests.

第３面は本発明の一実施例のスピーカシステム４の外観
を示す斜視図である。スピーカ１が取付けられているス
ピーカユニット２の前面（第３図上方面）には、パイプ
などで実現される取付は部材８によって間隔ｇをおいて
、デフユーザ３が着脱自在に取付けられる。注目すべき
は、デフユーザ３を取外し、スピーカ１の中心軸ノ１を
９０゜回転させ仮想線ノＸで示される正面方向に向けれ
；ｆ１従未からのスピーカユニット２と同じになること
である。したがってｆｊＳ３図示のスピーカシステム４
を少なくとも２個使用することによって、従来からのス
テレオ用スピーカとして使用することができる。The third side is a perspective view showing the appearance of the speaker system 4 according to an embodiment of the present invention. A differential user 3 is removably attached to the front surface (upper side in FIG. 3) of the speaker unit 2 to which the speaker 1 is attached, at a distance g by a member 8, which is attached using a pipe or the like. What should be noted is that the differential user 3 is removed, and the center axis 1 of the speaker 1 is rotated 90 degrees to face the front direction indicated by the imaginary line X; it becomes the same as the speaker unit 2 from the f1 front. Therefore, fjS3 illustrated speaker system 4
By using at least two of them, it can be used as a conventional stereo speaker.

第４ズは本発明の一実施例のスピーカユニットの出力特
性について、発明者が測定した結果を示すグラフである
。グラフは横細に再生周波数（Ｈｚ）範囲を、縦軸に基
準音圧レベル（○ｃｌＢ）に対する出力偏差をとってい
る。第１の特性曲線ｍ１　　は、当該スピーカユニット
２がらデフユーザ３を取外し、スピーカ１の中心軸Ｊ：
！１を正面に向けた状態でスピーカ１から、たとえば１
１隔てた中心軸上の音圧レベルが示され、第２の特性ｆ
ｉｌｌ線躊２　は、スピーカユニット２にデフユーザ３
を取付けて平面無指向性とした前掲第３図示のスピーカ
システム４を用いた状態で、正面紬！×上でスピーカユ
ニット２からたとえば１１隔てた位置における音圧レベ
ルが示されている。ここに正面紬！×は、デフユーザ３
の基台６とスビーカユニッ）２の上面との間隔の１／２
の位置と、スピーカユニット２の幅の１／２の位置を通
る紬である。The fourth graph is a graph showing the results of measurements made by the inventor regarding the output characteristics of the speaker unit according to an embodiment of the present invention. In the graph, the horizontal axis indicates the reproduction frequency (Hz) range, and the vertical axis indicates the output deviation with respect to the reference sound pressure level (○clB). The first characteristic curve m1 is the central axis J of the speaker 1 when the differential user 3 is removed from the speaker unit 2:
! For example, from speaker 1 with speaker 1 facing forward,
The sound pressure level on the central axis separated by 1 is shown, and the second characteristic f
The illumination line 2 has a differential user 3 on the speaker unit 2.
With the speaker system 4 shown in Figure 3 above attached and made flat omnidirectional, the front pongee! The sound pressure level at a position separated by, for example, 11 points from the speaker unit 2 is shown above the x. Here is the front pongee! × means differential user 3
1/2 of the distance between the base 6 and the top surface of the subica unit 2
This is a pongee that passes through the position of , and the position of 1/2 of the width of the speaker unit 2.

スピーカ１はいずれもたとえば口径１２ｃＩ１１である
。第４図示のグラフから明らかなように、デフユーザ３
を取付けて平面無指向性とした本実施例によるスピーカ
システムの場合は、スピーカ１の中心軸５１　　を正面
にむけた場合の平坦な特性に比べて、高音域に向かって
出力が暖やかに低下している。したがってこのような特
性を補正する補償回路を全チャネルの増＠器に含！Ａせ
る必要がある。The speakers 1 each have a diameter of 12cI11, for example. As is clear from the graph shown in the fourth figure, the differential user 3
In the case of the speaker system according to this embodiment, which has a planar omnidirectional structure by attaching the speaker 1, the output becomes warmer toward the high frequency range, compared to the flat characteristic when the central axis 51 of the speaker 1 is facing the front. It is declining. Therefore, all channel amplifiers must include a compensation circuit to correct such characteristics! It is necessary to do A.

第５図は本実施例の増幅器１チヤネルに含まれる補償回
路の電気回路であり、第６図は第５図示の回路により得
られる増ｌ１４器の周波数特性を示すグラフである。第
５図示の回路はいわゆる音質調整回路であって、１ｋＨ
２を中心として低音域と高音域との利得を個別に調整可
能である。このうち第５図左方の抵抗Ｒ１、Ｒ２、Ｒ４
と、コンデンサＣＩ、Ｃ２および可変抵抗ＶＲＩとで構
成される回路＃！Ｎ１は低音域の調整を受持ち、第５図
右方の抵抗Ｒ５、Ｒ８と、コンデンサＣ３、Ｃ４および
可変抵抗ＶＲとで構成される回路網Ｎ２は高音域の調整
を受持つ、また抵抗Ｒ６，Ｒ７の直列回路は出力レベル
の分圧回路を形成している。FIG. 5 is an electric circuit of the compensation circuit included in one channel of the amplifier of this embodiment, and FIG. 6 is a graph showing the frequency characteristics of the amplifier obtained by the circuit shown in FIG. The circuit shown in Figure 5 is a so-called sound quality adjustment circuit, and has a 1kHz
The gains for the bass and treble ranges can be adjusted individually around 2. Of these, the resistors R1, R2, and R4 on the left side of Figure 5
A circuit #! consisting of capacitors CI, C2, and variable resistor VRI. N1 is in charge of adjusting the bass range, and a circuit network N2 consisting of resistors R5 and R8 on the right side of FIG. 5, capacitors C3 and C4, and variable resistor VR is in charge of adjusting the treble range. The series circuit of R7 forms an output level voltage divider circuit.

回路網Ｎ２の可変抵抗ＶＲ２を加減することにより、高
音域の出力レベルが変化する。可変抵抗ＶＲ２のスライ
ダＵが、抵抗Ｒ５との接続点に２に近付くに従い、高音
域の出力レベルは増加し、第６図のグラフの曲線部３で
示される特性となる。By adjusting the variable resistor VR2 of the circuit network N2, the output level of the treble range changes. As the slider U of the variable resistor VR2 approaches the connection point with the resistor R5 to 2, the output level in the treble range increases, resulting in the characteristic shown by the curved line 3 in the graph of FIG.

またスライダＵが、反対に抵抗Ｒ８との接続点に３に近
付くに従い出力レベルは低下し、第６図の曲ｈｔ　１５
　　で示される特性となる。スライダＵが可変抵抗ＶＲ
２の抵抗範囲の中間、αにあるときは、第６図の曲線！
０４　　で示されるよ）に平坦な特性となる。In addition, as the slider U approaches the connection point with the resistor R8, the output level decreases, and the output level decreases as the slider U approaches the connection point with the resistor R8.
The characteristics are shown as . Slider U is variable resistance VR
When it is at α, the middle of the resistance range of 2, the curve in Figure 6!
04) has a flat characteristic.

またスライダＵを中間位置において抵抗Ｒ５を短絡する
と、！５６図の曲線１１１６　　で示されるような特性
が得られる０本実施例では上述の補償回路を全チャネル
の増＃：ｉ器に含ませ、抵抗Ｒ５の両端をライン、１１
１．Ｊｇ１２を介してスイッチＳａの接点ａ、　ｂに接
続し、デフユーザ３を取付けて無指向性スピーカシステ
ムとしてｆｊＳ６図示の曲線＋ａ６　　の特性を得、前
掲第３図示のような高音域での出力低下を補正するよう
にした。また同時にスイッチＳａと連動するスイッチｓ
ｂを設け、その接点ｃｅ間を導通させて抵抗Ｒ６，Ｒ７
による分圧を行うことなく、直接出力端子Ｔ３．Ｔ４に
音声信号を導出し、これによって増幅器の利得は増加し
、無指向性スピーカシステムとして使用する際の音圧の
低下を補償することができるようにした。Moreover, if the resistor R5 is short-circuited with the slider U in the intermediate position, ! In this embodiment, the above-mentioned compensation circuit is included in the amplifier of all channels, and both ends of the resistor R5 are connected to the line 1116 in FIG.
1. Connect to contacts a and b of switch Sa through Jg12 and attach differential user 3 to obtain the characteristics of the curve + a6 shown in the fjS6 diagram as an omnidirectional speaker system, and reduce the output drop in the high frequency range as shown in the third diagram above. I tried to correct it. At the same time, a switch s that interlocks with switch Sa
b is provided, and conduction is established between the contacts ce to connect resistors R6 and R7.
Direct output terminal T3. An audio signal was derived at T4, thereby increasing the gain of the amplifier and making it possible to compensate for the drop in sound pressure when used as an omnidirectional speaker system.

上述の実施例では、無指向性スピーカシステムとして使
用する際の出力特性の補正を増幅器に含よれる音質調整
回路により実現するようにしたけれども、？Ｉ！ｌ償回
路として再生周波数帯域を多数のチャネルに分割してチ
ャネル毎にレベル：ｉ：ｉ整を行ういわゆるグラフイノ
クイフライザを使用するようにしてもよい。これにより
実際の使用環境下においての細かい調整が可能となり、
音響効果をさらに高めることができる。In the above embodiment, the output characteristics are corrected when used as an omnidirectional speaker system using the sound quality adjustment circuit included in the amplifier. I! A so-called graph innoquilizer which divides the reproduced frequency band into a large number of channels and performs level i:i adjustment for each channel may be used as the compensation circuit. This makes it possible to make fine adjustments under the actual usage environment.
The acoustic effect can be further enhanced.

効　　果 以上のように、本発明に従うオーディオ装置は、複数チ
ャネルの増幅器と、上記複数チャネルの増幅器の出力に
よって個別的に駆動されるスピーカが収容された少なく
とも２個のスピーカユニットとによって構成される。Effects As described above, the audio device according to the present invention includes a multi-channel amplifier and at least two speaker units housing speakers that are individually driven by the outputs of the multi-channel amplifier. .

スピーカユニットは、その開口部前面１こおいて、スピ
ーカを臨む位置にデフユーザが着脱自在に取付けられ、
上記増幅器はデフユーザ使用にあたり、その出力レベル
と周波数特性とをチャネル毎に補正可能な補償回路を含
む。A differential user is removably attached to the speaker unit at a position facing the speaker at the front side of the opening.
When used as a differential user, the amplifier includes a compensation circuit capable of correcting its output level and frequency characteristics for each channel.

スピーカユニットの開口部前面にデフユーザを取付け、
スピーカからの音波をデフユーザの反射面で拡散させ、
スピーカの中心軸の軸線まわりの平面内に音波を放射さ
せるようにした。また増幅器にはデフユーザの使ｍにあ
たって音圧レベルと周波数１、？性を補正する補償回路
を含むようにした。Attach the differential user to the front of the speaker unit opening.
The sound waves from the speaker are diffused by the reflective surface of the differential user,
Sound waves are radiated in a plane around the central axis of the speaker. Also, the amplifier has sound pressure level and frequency 1, ? for differential users. It includes a compensation circuit that corrects the

したがってスピーカの中心軸を上方に向ければ、スピー
カの中心軸の軸線まわりの平面内において無指向性のス
ピーカシステムをＩＱえたオーディオ装置が実現される
。Therefore, if the center axis of the speaker is directed upward, an audio device with an IQ of an omnidirectional speaker system within a plane around the axis of the center axis of the speaker can be realized.

上記デフユーザはスビーカユニソ）１：１税自在に取り
付けられるので、デフユーザを取外してスピーカの中心
軸を正面すなわち聴取者の方に向ければ、従来のスピー
カユニットと同様にして使用できる０本発明に従えば、
簡単な構成によりスピーカシステムを平面無指向性とす
ることも、従来のステレオシステムとしてｍいることも
ともに可能であるから、使用環境に対応した音響空間の
創造と、すぐれた音響効果を実現することができる。The above-mentioned differential user can be installed in a 1:1 manner, so if the differential user is removed and the center axis of the speaker is directed toward the front, that is, toward the listener, it can be used in the same way as a conventional speaker unit.According to the present invention, ,
With a simple configuration, it is possible to make the speaker system non-directional or to use it as a conventional stereo system, so it is possible to create an acoustic space that corresponds to the usage environment and achieve excellent acoustic effects. Can be done.

【図面の簡単な説明】 第１図は本発明の一実施例のスピーカユニット２とデフ
ユーザ３との構成を示す斯面図、第２図は本発明の一実
施例のデフユーザ３の斜視図、第３図は本発明の一実施
例のスピーカシステムの外観を示す斜視図、第４図は本
発明の一実施例のスピーカユニット２の出力特性を示す
グラフ、ｐｔｃｓ図は本実施例の増幅器１チヤネルに含
まれる補償回路の電気回路、ｔｊ４Ｇ図は補償回路によ
る増幅器の周波数特性を示すグラフ、第７図は従来のス
テレオ装はのスピーカの配置を示す図、第８図はスピー
カが形成する音フ空間を示す図である。 １３１．３２，４１・・・スピーカ、２，２３．３４・
・・スピーカユニット、３・・・デフユーザ、４・・・
ステレオシステム、５・・・デフユーザの反射面、８・
・・取付は部材 代理人　　弁理士　四教　圭一部 第２図 第３図 ｚ 第４　図 ＋００＋２　　　　　　　　　　　＋にＨ２ｌ０ＫＨ２
第６図 第　７　図 第　８図 手続補正書 昭和６１年１１月２０日BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view showing the configuration of a speaker unit 2 and a differential user 3 according to an embodiment of the present invention, and FIG. 2 is a perspective view of the differential user 3 according to an embodiment of the present invention. FIG. 3 is a perspective view showing the external appearance of a speaker system according to an embodiment of the present invention, FIG. 4 is a graph showing the output characteristics of the speaker unit 2 according to an embodiment of the present invention, and the ptcs diagram is a diagram showing the output characteristics of the speaker unit 2 according to an embodiment of the present invention. The electric circuit of the compensation circuit included in the channel, Figure tj4G is a graph showing the frequency characteristics of the amplifier using the compensation circuit, Figure 7 is a diagram showing the arrangement of speakers in a conventional stereo system, and Figure 8 is the sound produced by the speakers. FIG. 131.32,41...Speaker, 2,23.34.
...Speaker unit, 3...Diff user, 4...
Stereo system, 5... Reflective surface of differential user, 8.
...Installation is done by component agent, patent attorney Keiichi Shikyo, Figure 2, Figure 3, z, Figure 4, +00+2 +H2l0KH2
Figure 6 Figure 7 Figure 8 Procedural amendment dated November 20, 1986

Claims (1)

【特許請求の範囲】 複数チャネルの増幅器と、 上記複数チャネルの増幅器の出力によって個別的に駆動
されるスピーカがそれぞれ収容された少なくとも２個の
スピーカユニットとによって構成されるオーディオ装置
であって、 スピーカユニットは、その開口部前面においてスピーカ
を臨む位置に、デフユーザが着脱自在に取付けられ、 上記増幅器は、デフユーザ使用にあたり、その出力レベ
ルと周波数特性とをチャネル毎に補正する補償回路を含
むことを特徴とするオーディオ装置。[Scope of Claims] An audio device comprising a plurality of channel amplifiers and at least two speaker units each housing a speaker individually driven by the outputs of the plurality of channel amplifiers, the speaker unit comprising: A differential user is removably attached to the unit at a position facing the speaker in front of the opening thereof, and the amplifier is characterized in that it includes a compensation circuit that corrects the output level and frequency characteristics of each channel when used as a differential user. audio equipment.
JP61216219A 1986-09-13 1986-09-13 Audio equipment Expired - Fee Related JPH0724439B2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP61216219A JPH0724439B2 (en) 1986-09-13 1986-09-13 Audio equipment
GB8721451A GB2195218B (en) 1986-09-13 1987-09-11 Speaker unit
KR1019870010062A KR910006469B1 (en) 1986-09-13 1987-09-11 Multi-directional speaker unit
AU78288/87A AU593683B2 (en) 1986-09-13 1987-09-11 Audio system
US07/604,340 US5173942A (en) 1986-09-13 1990-10-24 Audio system operable in directional and non-directional modes
HK793/91A HK79391A (en) 1986-09-13 1991-10-10 Speaker unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61216219A JPH0724439B2 (en) 1986-09-13 1986-09-13 Audio equipment

Publications (2)

Publication Number Publication Date
JPS6372299A true JPS6372299A (en) 1988-04-01
JPH0724439B2 JPH0724439B2 (en) 1995-03-15

Family

ID=16685142

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61216219A Expired - Fee Related JPH0724439B2 (en) 1986-09-13 1986-09-13 Audio equipment

Country Status (5)

Country Link
JP (1) JPH0724439B2 (en)
KR (1) KR910006469B1 (en)
AU (1) AU593683B2 (en)
GB (1) GB2195218B (en)
HK (1) HK79391A (en)

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JPH04132796U (en) * 1991-05-31 1992-12-09 株式会社ケンウツド omnidirectional speaker system
JP2013077872A (en) * 2011-09-29 2013-04-25 Audio Technica Corp Horn-shaped speaker
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Also Published As

Publication number Publication date
KR910006469B1 (en) 1991-08-26
GB2195218B (en) 1990-02-21
GB2195218A (en) 1988-03-30
AU7828887A (en) 1988-03-17
KR880004715A (en) 1988-06-07
AU593683B2 (en) 1990-02-15
JPH0724439B2 (en) 1995-03-15
GB8721451D0 (en) 1987-10-21
HK79391A (en) 1991-10-18

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