JPH04172799A - On-vehicle speaker - Google Patents
On-vehicle speakerInfo
- Publication number
- JPH04172799A JPH04172799A JP2302031A JP30203190A JPH04172799A JP H04172799 A JPH04172799 A JP H04172799A JP 2302031 A JP2302031 A JP 2302031A JP 30203190 A JP30203190 A JP 30203190A JP H04172799 A JPH04172799 A JP H04172799A
- Authority
- JP
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- Prior art keywords
- horn
- sound
- vehicle
- speaker device
- driver
- 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
Links
- 230000005855 radiation Effects 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 9
- 230000004807 localization Effects 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 102000013462 Interleukin-12 Human genes 0.000 description 1
- 108010065805 Interleukin-12 Proteins 0.000 description 1
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- 210000005069 ears Anatomy 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
Landscapes
- Stereophonic System (AREA)
- Stereophonic Arrangements (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、車載用スピーカ装置に関するものである。[Detailed description of the invention] Industrial applications The present invention relates to a vehicle-mounted speaker device.
従来の技術
一般に車室内は運転席或は助手席での受聴位置と左右の
スピーカ装置との位置関係が非対称となる。従って、車
室内において運転席、助手席双方で同時に左右のスピー
カからの応答を等しくして自然なステレオ惑のある音場
を再生することは困難であった。ここで、従来の車載用
スピーカ装置について、図面を参照しながら説明する。BACKGROUND ART In general, in a vehicle interior, the listening position at the driver's seat or passenger seat and the positional relationship between the left and right speaker devices are asymmetrical. Therefore, it is difficult to simultaneously equalize the responses from the left and right speakers in both the driver's seat and the passenger's seat in the vehicle interior and reproduce a sound field with a natural stereo effect. Here, a conventional vehicle-mounted speaker device will be described with reference to the drawings.
第８図は、従来の車載用スピーカ装置を備えた車室の一
部切欠概略図を示す。第８図ユニおいて、１は運転席、
２は助手席、３は右フロントドア、４は左フロントドア
、５は右フロントドア３に埋め込まれた右チヤンネル用
の中低音用スピーカ、６は左フロントドア４に埋め込ま
れた左チヤンネル用の中低音用スピーカ、７はダツシュ
ボード、８はダツシュボード７の右端部に設けた右チヤ
ンネル用の高音用スピーカ、９はダツシュボード７の左
端部に設けた左チヤンネル用の高音用スピーカである。FIG. 8 shows a partially cutaway schematic diagram of a vehicle interior equipped with a conventional vehicle-mounted speaker device. In Figure 8 Uni, 1 is the driver's seat,
2 is the passenger seat, 3 is the right front door, 4 is the left front door, 5 is the mid-bass speaker for the right channel embedded in the right front door 3, and 6 is the speaker for the left channel embedded in the left front door 4. 7 is a dash board; 8 is a right channel treble speaker provided at the right end of the dash board 7; 9 is a left channel treble speaker provided at the left end of the dash board 7.
発明が解決しようとする課題
しかしながら、この様な従来のスピーカ装置では、運転
席１の受聴位ｉｆＡ点において、右フロントドア３に埋
め込まれた右チヤンネル用の中低音用スピーカ５からの
経路Ｃ−Ａを通る応答の方が、左フロントドア４Ｌこ埋
め込まれた左チヤンネル用の中低音用スピーカ６からの
経路Ｄ−Ａを通る応答よりも音圧レベルが高く、かつ到
達時間も早いため、音像の定位が右に偏ってしまってい
た。また、フロントドアに埋め込むスピーカでは、装着
位置が足元にくるため音源の高さが受聴者の耳の位置か
ら外れ、スピーカは高音域で指向性を有するため、その
再生音はどうしても乱れたものとなっていた。Problems to be Solved by the Invention However, in such a conventional speaker device, at the listening position ifA of the driver's seat 1, the path C- from the right channel mid-bass speaker 5 embedded in the right front door 3 is The sound pressure level of the response passing through A is higher and the arrival time is faster than that of the response passing through route D-A from the left channel mid-bass speaker 6 embedded in the left front door 4L, so the sound image The localization was biased to the right. In addition, with speakers embedded in the front door, the height of the sound source is removed from the listener's ears because the installation position is at the feet, and the speaker has directivity in the high frequency range, so the reproduced sound will inevitably be distorted. It had become.
この高音域での音圧特性の乱れを改善するために、ダツ
シュボード７の左右両端部に高音用スピーカ８，９を設
けている。これによって、音源位置が受聴者の耳の高さ
に近くなるため垂直方向の指向性による音圧の乱れは改
善されるものである。In order to improve this disturbance in the sound pressure characteristics in the high frequency range, high frequency speakers 8 and 9 are provided at both left and right ends of the dash board 7. This brings the sound source position closer to the listener's ear height, thereby improving sound pressure disturbances caused by vertical directivity.
しかし、中低音用スピーカ５，６の動作と同様に、運転
席１の受聴位置Ａ点においてダツシュボード７の右端部
に設けた右チヤンネル用の高音用スピーカ８からの経路
Ｅ−Ａを通る応答の方が、ダツシュボード左端部に設け
た左チヤンネル用の高音用スピーカ９からの経路Ｆ−Ａ
を通る応答よりも音圧レベルが高く、かつ到達時間も早
いため、音像の定位が右に偏るという音場再生上の問題
点は依然として残されるものであった。However, similar to the operation of the mid-bass speakers 5 and 6, the response from the high-frequency speaker 8 for the right channel provided at the right end of the dash board 7 at the listening position A of the driver's seat 1 through the path E-A. The other side is the path F-A from the high-pitched speaker 9 for the left channel provided at the left end of the dash board.
Since the sound pressure level is higher and the arrival time is faster than that of the response that passes through the channel, the problem with sound field reproduction remains that the localization of the sound image is biased to the right.
また、上記の問題を解決するために、減衰器及び遅延手
段を用いて右チヤンネル用スピーカ５゜８からの音圧レ
ベルおよび時間応答を左チヤンネル用スピーカ６．９か
らの応答と等しくなるように調整しても、その時の助手
席２の受聴点Ｂにおける左右両チャンネルからの応答は
音圧レベルも到達時間もさらに不均一なものとなり、再
生される音場はより不自然なものとなるものであった。In order to solve the above problem, an attenuator and a delay means are used to make the sound pressure level and time response from the right channel speaker 5.8 equal to the response from the left channel speaker 6.9. Even if the adjustment is made, the responses from both the left and right channels at the listening point B of the passenger seat 2 at that time will become even more uneven in sound pressure level and arrival time, and the reproduced sound field will become more unnatural. Met.
本発明は上記課題を解決するものであり、車室内におい
て運転席、助手席双方ともに、同時にステレオ音場を実
現することを目的とするものである。The present invention is intended to solve the above-mentioned problems, and it is an object of the present invention to simultaneously realize a stereo sound field in both the driver's seat and the passenger's seat in a vehicle interior.
課題を解決するための手段
この目的を達成するために本発明の車載用スピーカ装置
は、ホーンドライバーに複数個の音響管を連結し、上記
音響管の先端にそれぞれホーンを結合し、このホーンを
複数個集めてユニット化して２組のホーンスピーカを構
成し、前記ホーンスビー力の一方が運転席、他方が助手
席にのみ音を放射する様な鋭い指向性を有する２つの音
源として、この２つの音源を車室の左右それぞれに設置
するものである。さらに、２つの音源から出た音が運転
席と助手席の受聴者に同時に到達する遅延手段を一方の
音源に備えるとともに、放射音を床面で反射２拡散させ
た中低音用スピーカ装置を併用した構成とするものであ
る。Means for Solving the Problems In order to achieve this object, the in-vehicle speaker device of the present invention connects a plurality of acoustic tubes to a horn driver, connects a horn to the tip of each of the acoustic tubes, and connects the horn to a horn driver. A plurality of horn speakers are assembled into a unit to form two sets of horn speakers, and these two sound sources have sharp directivity such that one of the Hornsby forces radiates sound only to the driver's seat and the other radiates sound only to the passenger seat. Sound sources are installed on each side of the vehicle interior. Furthermore, one of the sound sources is equipped with a delay means that allows the sound emitted from two sound sources to reach listeners in the driver's and passenger's seats at the same time, and is also equipped with a mid-bass speaker device that reflects and diffuses the radiated sound on the floor. The structure is as follows.
作用
本発明は上記構成により、車室内の運転席、助手席双方
において、左右両チャンネルからの音圧レベルおよび時
間応答を等しくして、受聴点によらず自然なステレオ音
場を実現できるものである。Effect of the Invention With the above configuration, the present invention makes it possible to equalize the sound pressure level and time response from both left and right channels in both the driver's seat and the passenger's seat in the vehicle interior, thereby realizing a natural stereo sound field regardless of the listening point. be.
実施例
以下、本発明の実施例について、図面を参照しながら説
明する。EXAMPLES Hereinafter, examples of the present invention will be described with reference to the drawings.
第１図は本発明の第１の実施例における車載用スピーカ
装置を示すもので、■は運転席、２は助手席、７はダツ
シュボード、１０はダツシュボード７の右端部にホーン
開口を運転席に向けて直線状に配列して設置した高音用
の１組のホーンスピーカ、１１は同様にダツシュボード
７の右端部にホーン開口を助手席に向けて直線状に配列
して設置したもう１組のホーンスピーカ、１２はダツシ
ュボード７の左端部にホーン開口を助手席に向けて直線
状に配列して設置した高音用の１組のホーンスピーカ、
１３は同様にダンシュボード７の左端部にホーン開口を
運転席に向けて直線状に配列して設置したもう１組のホ
ーンスピーカ、１４はダッシュボード７右端下部に床面
を向けて取り付けた中低音用スピーカ、１５は同様にダ
ッシュボード７左端下部に床面を向けて取り付けた中低
音用スピーカ、１６は電気信号源、１７はバイパスフィ
ルター、１８はバイパスフィルター１７に接続され高音
用のホーンスピーカＩＬ １３を駆動する増幅器、１９
は遅延器、２０は減衰器、２１は高音用スピーカ１０．
１２を駆動する増幅器、２２はローパスフィルター、２
３は中低音用スピーカ１４．’ １５を駆動する増幅器
である。FIG. 1 shows an in-vehicle speaker device according to a first embodiment of the present invention, where ■ is a driver's seat, 2 is a passenger seat, 7 is a dash board, and 10 is a horn opening at the right end of the dash board 7, located at the driver's seat. 11 is a set of horn speakers for high-pitched sounds arranged in a straight line toward the driver's seat, and 11 is another set of horns arranged in a straight line with the horn opening facing the passenger seat at the right end of the dash board 7. Speakers 12 are a pair of high-pitched horn speakers installed at the left end of the dash board 7 with horn openings arranged in a straight line toward the passenger seat;
13 is another set of horn speakers installed on the left end of dashboard 7 with horn openings arranged in a straight line facing the driver's seat, and 14 is installed on the lower right end of dashboard 7 with horn openings facing the floor. A bass speaker, 15 is a mid-bass speaker mounted on the lower left side of the dashboard 7 facing the floor, 16 is an electric signal source, 17 is a bypass filter, and 18 is a high-frequency horn speaker connected to the bypass filter 17. Amplifier driving IL 13, 19
20 is a delay device, 20 is an attenuator, and 21 is a treble speaker 10.
12 is an amplifier that drives 22, 22 is a low-pass filter, 2
3 is a mid-bass speaker 14. '15.
第２図は、第１図で示した本発明の第１の実施列におけ
る高音用ホーンスピーカの構成を詳細に示すものである
。第２図において、２４はホーンドライバー、２５〜３
０はホーンドライバー２４に連結した同じ長さの音響管
で、その先端にホーン３１〜３６が結合しており、それ
ぞれの前面の開口は直線状に配列されている。FIG. 2 shows in detail the structure of the high-pitched horn speaker in the first embodiment of the present invention shown in FIG. In Figure 2, 24 is a horn driver, 25-3
0 is an acoustic tube of the same length connected to the horn driver 24, and horns 31 to 36 are connected to the tip thereof, and the openings on the front surface of each tube are arranged in a straight line.
以上の様に構成されたスピーカ装置について、以下その
動作について説明する。The operation of the speaker device configured as described above will be described below.
まず、第２図で示した高音用のホーンスピーカの動作に
ついて説明すると、ホーンドライバー２４より出た音波
は音響管２５〜３０に等分割されて伝送され、上記音響
管２５〜３０の先端に結合したホーン３１〜３６に導か
れ、その開口より車室内に音波を放射する。First, to explain the operation of the high-pitched horn speaker shown in FIG. 2, the sound waves emitted from the horn driver 24 are equally divided into acoustic tubes 25 to 30, transmitted, and coupled to the tips of the acoustic tubes 25 to 30. The sound waves are guided into the horns 31 to 36 and radiate into the vehicle interior from the openings thereof.
第２図にはホーン３１〜３６の開口における音圧波面を
破線で示すが、それぞれのホーン開口では小さな球面波
となり上記波面を有するホーン３１〜３６の集合体とし
て、本ホーンスピーカは動作するものである。すなわち
、ホーン３１〜３６は等価的に点音源を直線状に配列し
た場合の指向性を有するものであり、その波面は平面波
に近い。従って、指向性の非常鋭いホーンスピーカが実
現できるものである。In FIG. 2, the sound pressure wavefronts at the openings of the horns 31 to 36 are shown by broken lines, and each horn opening generates a small spherical wave.This horn speaker operates as an assembly of the horns 31 to 36 having the above-mentioned wavefronts. It is. That is, the horns 31 to 36 have the directivity equivalent to that of point sound sources arranged in a straight line, and their wavefronts are close to plane waves. Therefore, a horn speaker with very sharp directivity can be realized.
従来のホーンでは、その開口形状にかかわらず、ホーン
内を伝搬する音圧波面はホーン側壁に沿った球面波状と
なり、音場に放射される音波も球面波となって鋭い指向
性を得ることは困難であった。In conventional horns, regardless of the aperture shape, the sound pressure wavefront propagating inside the horn has a spherical wave shape along the side wall of the horn, and the sound waves radiated into the sound field are also spherical waves, making it difficult to obtain sharp directivity. It was difficult.
特に車室内では、スピーカより放射された音は、フロン
トガラスやダツシュボード等の反射面で反射、拡散され
るため特定の方向Ｇこのみ音を放射させるには、スピー
カの指向性を相当鋭いものとして、上記反射面での反射
拡散をできる限り少なくする必要がある。Particularly in the interior of a vehicle, the sound emitted from the speakers is reflected and diffused by reflective surfaces such as windshields and dash boards, so in order to emit sound in a specific direction, the directivity of the speakers must be made very sharp. It is necessary to minimize reflection and diffusion on the reflecting surface.
本実施例のホーンとホーン開口の長さが等しい従来ホー
ンの軸上、３０°、６０°方向の指向特性を第３図（ｂ
）に、本実施例のホーンの指向特性を第３図（ａ）に示
す。第３図より、従来のホーンに比べて本実施例のホー
ンは非常に鋭い指向性を実現できることがわかる。Figure 3 (b
), and the directional characteristics of the horn of this example are shown in FIG. 3(a). From FIG. 3, it can be seen that the horn of this embodiment can achieve much sharper directivity than the conventional horn.
次に、上記の鋭い指向性を有するホーンを用いた車載用
スピーカ装置についてその動作を説明する。Next, the operation of the vehicle-mounted speaker device using the above-mentioned horn having sharp directivity will be explained.
第１図において、ダツシュボード７の左右両端に設置し
たスピーカ１０．１１．１２．１３はいずれも第２図で
説明した鋭い指向性を有するホーンスピーカである。In FIG. 1, the speakers 10, 11, 12, and 13 installed at both left and right ends of the dash board 7 are all horn speakers having sharp directivity as described in FIG. 2.
ホーンスピーカ１０は受聴点Ａに、ホーンスピーカ１２
は受聴点Ｂにそれぞれ放射音を限定して到達するように
設置されておりこホーンスピーカ１１は受聴点Ｂに、ホ
ーンスピーカ１２は受聴点Ａに限定して音を放射するよ
うに設置されている。Horn speaker 10 is located at listening point A, and horn speaker 12 is located at listening point A.
The horn speaker 11 is installed so that the radiated sound reaches the listening point B in a limited manner, and the horn speaker 12 is installed so that the sound is limited to the listening point A. There is.
さらに、運転席１の受聴点Ａにおける左右両チャンネル
からの経路Ｇ−Ａと経路Ｊ−Ａ及び助手席２の受聴点Ｂ
における左右両チャンネルからの経路Ｔ−Ｂと経路Ｈ−
Ｂとの間の行路差による時間応答のずれは遅延器１９に
よって、また距離減衰による音圧レベル差は減衰器２０
によってそれぞれ補正される。Furthermore, the route G-A and route J-A from both the left and right channels at the listening point A of the driver's seat 1, and the listening point B of the passenger seat 2.
Path T-B and path H- from both left and right channels in
The time response shift due to the path difference between
Each is corrected by
従って、バイパスフィルター１７により帯域分割された
電気信号源１６からの高音域信号は遅延器１９、及び減
衰器２０を通過する信号と、これを通過しない信号に分
かれてそれぞれ増幅器１８．２１に供給され、運転席の
受聴点Ａにおいてホーンスピーカ１０から放射される右
チャンネルからの音と、ホーンスピーカ１３から放射さ
れる左チャンネルからの音は時間応答のずれがなく音圧
レベル差もない再生音となる。助手席の受聴点Ｂにおけ
る再生音についてもこれと同様になるものであり、ホー
ンスピーカが鋭い指向性を持つため、各チャンネル用の
スピーカの再生音が他のチャンネルの再生音を乱すこと
は最小限に抑えられる。Therefore, the high-frequency signal from the electric signal source 16 that has been band-divided by the bypass filter 17 is divided into a signal that passes through the delay device 19 and the attenuator 20, and a signal that does not pass through the delay device 19 and the attenuator 20, and is supplied to the amplifiers 18 and 21, respectively. At the listening point A of the driver's seat, the sound from the right channel emitted from the horn speaker 10 and the sound from the left channel emitted from the horn speaker 13 are reproduced sounds with no difference in time response and no difference in sound pressure level. Become. The same goes for the sound played at listening point B in the passenger seat, and since the horn speaker has sharp directivity, the sound played by the speaker for each channel will minimize the disturbance of the sound played by other channels. can be kept to a minimum.
また、中低音用スピーカ１４．１５はダツシュボード７
の下に設けてその放射音を床面で反射、拡散させる。車
室内のような音源位置と受聴点が近接した音場では、低
音域が無指向性であることと、中音域の床面での反射、
拡散の効果によって受聴点によらず音像を車室のほぼ中
央に定位させることが可能である。これにより、中高音
域の音についても受聴点により音像の定位が偏ることを
改善でき、再生音の広がり感、ステレオ感は、上記鋭い
指向性を有する高音用スピーカとの併用によって達成さ
れる。In addition, the mid-bass speakers 14 and 15 are Dash Board 7.
The radiated sound is reflected and diffused by the floor surface. In a sound field where the sound source position and listening point are close to each other, such as inside a car, the low frequency range is omnidirectional, and the reflection of the midrange frequency range from the floor surface.
Due to the diffusion effect, it is possible to localize the sound image to approximately the center of the vehicle interior, regardless of the listening point. As a result, it is possible to improve the localization of the sound image depending on the listening point even for sounds in the mid-to-high frequency range, and the sense of spaciousness and stereo sound of the reproduced sound can be achieved by using the above-mentioned high-frequency loudspeaker having sharp directivity.
次に、本発明の第一の実施例について図面を参照しなが
ら説明する。Next, a first embodiment of the present invention will be described with reference to the drawings.
第４図は本発明の第二の実施例における車載用スピーカ
装置の高音用スピーカの平面図を示すもので、２４はホ
ーンドライバー、３７〜４２はホーンドライバー２４に
連結した音響管、４３〜４８は音響管３７〜４２の先端
に結合したホーンでその開口は円環状に配列されている
。なお、ここでは図示しないが、本高音用スピーカは第
１図で示した第一の実施例と同様にダツシュボードの左
右両端にそれぞれ２組、運転席と助手席に向けて設置す
るものである。FIG. 4 shows a plan view of a high-pitched speaker of a vehicle-mounted speaker device according to a second embodiment of the present invention, in which 24 is a horn driver, 37 to 42 are acoustic tubes connected to the horn driver 24, and 43 to 48 are is a horn connected to the tips of the acoustic tubes 37 to 42, and its openings are arranged in an annular shape. Although not shown here, similar to the first embodiment shown in FIG. 1, two sets of high-pitched speakers are installed at both left and right ends of the dash board, facing the driver's seat and the passenger's seat.
以上の様に構成されたスピーカ装置について、以下その
動作について説明する。The operation of the speaker device configured as described above will be described below.
第１図で示した本発明の第一の実施例の高音用スピーカ
と大きく異なるのは、ホーンの配列である。直線状にホ
ーンを配列した第一の実施例のホーンスピーカの水平方
向の指向性は、第３図で示した様に非常に鋭い指向性を
有するものであった。The main difference from the high-pitched speaker according to the first embodiment of the present invention shown in FIG. 1 is the arrangement of the horns. The horn speaker of the first embodiment, in which the horns were arranged in a straight line, had very sharp horizontal directivity as shown in FIG.
ところが、垂直方向では音源の長さが短いため、その指
向性は広くなり、ホーン開口より放射された音はダツシ
ュボードやフロントガラスにより反射、拡散されやすく
指向性の制御が困難でありスピーカの設置位置が限定さ
れる。第４図で示した本発明の第二の実施例の高音用ホ
ーンスピーカではホーン４３〜４８が円環状に配列され
るものであり、直線状音源の長さと円環状音源の円の直
径が等しいときには、周知のように指向性の鋭さは両者
はとんど同じである。即ち、ホーン配列を円環状とする
ことにより、直線状音源が有する水平方向の鋭い指向性
を、円環状音源では全方向に対して実現できるものであ
り、ダツシュボードやフロントガラスによる反射の影響
を少な（させることが可能となる。However, since the length of the sound source is short in the vertical direction, its directivity becomes wider, and the sound emitted from the horn opening is easily reflected and diffused by the dash board and windshield, making it difficult to control the directivity and making it difficult to install the speaker. is limited. In the high-pitched horn speaker according to the second embodiment of the present invention shown in FIG. 4, horns 43 to 48 are arranged in an annular shape, and the length of the linear sound source is equal to the diameter of the circle of the annular sound source. Sometimes, as is well known, the sharpness of the directionality is almost the same. In other words, by making the horn arrangement circular, the sharp horizontal directivity of a linear sound source can be achieved in all directions with a circular sound source, and the influence of reflections from dash boards and windshields is reduced. (It becomes possible to
なお、第一、第二の実施例では高音用のホーンスピーカ
のホーンドライバーとホーンを連結スる音響管の長さは
各ユニットで全て同じとし、受聴点での左右両チャンネ
ルの応答を等しくする手段として電気的な遅延器と減衰
器を用いたが、運転席での右チヤンネル用の高音用スピ
ーカ、即ち第１図で示したスピーカ１０及び、助手席で
の左チヤンネル用のスピーカ１２の音響管長を、それぞ
れ、運転席での左チヤンネル用スピーカ１３及び、助手
席での右チヤンネル用スピーカ１１の音響管長に対して
距離差による時間遅延を補正するだけ長くするならば、
電気的な遅延器と同様の効果が音響的に実現出来るもの
である。また、このように音響管長を長くすると、音波
が音響管内を伝搬するために生じる距離減衰、即ち電気
的な減衰器と同様の効果が音響的に同時に達成でき、こ
れにより、電気的な遅延手段と減衰手段が不要となリス
ビー力装置を駆動するための電気回路が大幅に簡略化で
きる。In the first and second embodiments, the length of the acoustic tube that connects the horn driver of the high-frequency horn speaker and the horn is the same for each unit, so that the responses of both left and right channels at the listening point are equal. Although an electrical delay device and an attenuator were used as means, the sound of the high-frequency speaker for the right channel in the driver's seat, that is, the speaker 10 shown in FIG. 1, and the speaker 12 for the left channel in the passenger seat. If the tube length is made longer than the sound tube length of the left channel speaker 13 in the driver's seat and the right channel speaker 11 in the passenger seat, respectively, to compensate for the time delay due to the distance difference,
The same effect as an electric delay device can be achieved acoustically. In addition, by increasing the acoustic tube length in this way, the distance attenuation that occurs when sound waves propagate inside the acoustic tube, that is, the effect similar to that of an electric attenuator, can be achieved acoustically at the same time. The electric circuit for driving the Lisby force device, which does not require any damping means, can be greatly simplified.
次に、本発明の第三の実施例について図面を参照しなが
ら説明する。Next, a third embodiment of the present invention will be described with reference to the drawings.
第５図は本発明の第三の実施例における車載用スピーカ
装置の高音用スピーカの構成を示す。第５図において、
２４はホーンドライバー、４９〜５１は同じ長さの音響
管であり、その先端には、直線状に配列した第１組のホ
ーン５５〜５７が結合されている。５２〜５４は音響管
４９〜５１よりも短く等しい長さの音響管であり、この
先端には上記ホーン５５〜５７に対して傾斜して直線状
に配列した第２組のホーン５８〜６０が結合されている
。なお、ここでは図示しないが、上記高音用スピーカは
第一の実施例と同様に、ダツシュボードの左右両端に、
それぞれ設置するものである。FIG. 5 shows the configuration of a high-pitched speaker of a vehicle-mounted speaker device according to a third embodiment of the present invention. In Figure 5,
24 is a horn driver, 49 to 51 are acoustic tubes of the same length, and a first set of horns 55 to 57 arranged linearly are connected to the tips of the tubes. Reference numerals 52 to 54 designate acoustic tubes having the same length and shorter than those of the acoustic tubes 49 to 51, and a second set of horns 58 to 60 arranged in a straight line at an angle with respect to the horns 55 to 57 is provided at the tip of the acoustic tubes. combined. Although not shown here, the high-pitched speakers are installed at both left and right ends of the dash board, as in the first embodiment.
They are to be installed separately.
以上のように構成されたスピーカ装置について、以下そ
の動作を説明する。第５図にはホーン５５〜５７で構成
された第１組のホーンの指向性パターンと、ホーン５８
〜６０で構成された第２組のホーンの指向性パターンを
示している。例えば、第１組のホーンは運転席に向かっ
て、第２組のホーンは第１組のホーンに対し傾斜させて
助手席に向かってそれぞれ音を放射するように配置する
。さらに、第１Ｍｉのホーンの音響管４９〜５１の長さ
を、音響的な遅延と減衰効果によって、同構成で設置さ
れた反対チャンネルからの応答と等しくなるように設定
するならば、第一、第二の実施例では必要とした、片チ
ャンネルそれぞれ２個のホーンドライバーによって構成
される２組の単独のホーンスピーカは、共用の１つのホ
ーンドライバー２４によって構成される２組のホーンス
ピーカに置き換えることが可能となり、電気回路も含め
てその構成は、さらに簡略化されるものである。The operation of the speaker device configured as described above will be described below. FIG. 5 shows the directivity pattern of the first set of horns consisting of horns 55 to 57 and the horn 58.
60 shows the directivity pattern of the second set of horns. For example, the first set of horns are arranged so as to radiate sound toward the driver's seat, and the second set of horns are arranged at an angle with respect to the first set of horns so as to radiate sound toward the passenger seat. Furthermore, if the length of the acoustic tubes 49 to 51 of the first Mi horn is set to be equal to the response from the opposite channel installed with the same configuration due to acoustic delay and damping effects, then the first Mi horn, The two sets of individual horn speakers each composed of two horn drivers for each channel, which were required in the second embodiment, can be replaced with two sets of horn speakers composed of one common horn driver 24. This makes it possible to further simplify the configuration including the electric circuit.
次に、本発明の第四の実施例について図面を参照しなが
ら説明する。Next, a fourth embodiment of the present invention will be described with reference to the drawings.
第６図は本発明の第四の実施例における車載用スピーカ
装置の構成を示すもので、７はダツシュボード、６１は
フロントガラス、６２．６３はダツシュボード７の右端
に開口を前面に向け２段重ねで設置した２組の高音用ホ
ーンスピーカ、６４．６５は同様に左端に設置した２組
の高音用ホーンスピーカ、６６、６７はダツシュボード
７の左右両端下部に床面に向けて取り付けた中低音用ス
ピーカである。FIG. 6 shows the configuration of a vehicle-mounted speaker device according to a fourth embodiment of the present invention, where 7 is a dash board, 61 is a windshield, and 62 and 63 are stacked in two stages on the right end of the dash board 7 with the opening facing the front. 2 sets of treble horn speakers installed in , 64 and 65 are two sets of treble horn speakers similarly installed on the left end, and 66 and 67 are for medium and low sounds installed at the bottom of both left and right ends of the dash board 7 facing the floor. It's a speaker.
第７図は、第６図で示した本発明の第四の実施例におけ
る高音用ホーンスピーカの構成を詳細に示すものであり
、ホーン７４〜７９の開口は第一の実施例と同様に直線
状に配列されている。本実施例では音響管６８〜７１の
各長さが、音響管７３〈音響管７２〈・・・ ・・・〈
音響管６９〈音響管６８と段階的に長くなっている。FIG. 7 shows in detail the structure of the high-pitched horn speaker according to the fourth embodiment of the present invention shown in FIG. arranged in a shape. In this embodiment, the lengths of the acoustic tubes 68 to 71 are the same as the acoustic tube 73, acoustic tube 72,...
Acoustic tube 69 becomes longer in stages with acoustic tube 68.
上記構成では、ホーンドライバー２４から出た音は音響
管６８〜７３の長さが異なるため、ホーン開口に至るま
での位相遅延がそれぞれ異なる。従って、ホーン７４〜
７９から放射される音は、ホーン７９からホーン７４に
向かって段階的に位相遅延を有するものとなる。すなわ
ち、この位相差をもった直線状の音源は第７図の破線で
示す第一の実施例の指向性のビームに対して実線で示す
ように位相遅延の大きいホーンの側にビームを傾けるこ
とが可能となるものであり、音響管長によってビームの
方向を任意に設定できるものである。In the above configuration, since the sound tubes 68 to 73 have different lengths, the sound emitted from the horn driver 24 has different phase delays until reaching the horn opening. Therefore, the horn 74~
The sound emitted from the horn 79 has a phase delay in stages from the horn 79 toward the horn 74. In other words, the linear sound source with this phase difference tilts the beam toward the horn side with a large phase delay, as shown by the solid line, with respect to the directional beam of the first embodiment shown by the broken line in FIG. The beam direction can be set arbitrarily by adjusting the acoustic tube length.
次に、上記の長さの異なる音響管を用いたホーンスピー
カを使用した車載用スピーカ装置につにてその動作を説
明する。Next, the operation of a vehicle-mounted speaker device using a horn speaker using acoustic tubes of different lengths will be described.
第６図において、ダツシュボード７の両端に２段重ねで
設置した高音用ホーンスピーカ６２．６３゜６４、６５
について、片チャンネルの２組のスピーカの内、少なく
とも１組のスピーカを上記の長さの異なる音響管を用い
たホーンスピーカを使用する。In Fig. 6, high-pitched horn speakers 62.63°64, 65 are installed in two layers at both ends of the dash board 7.
For this, at least one of the two sets of speakers in one channel is a horn speaker using acoustic tubes having different lengths as described above.
本実施例では、右チャンネルのスピーカ６２の指向性ビ
ームが助手席に向き、左チャンネルのスピーカ６４の指
向性ビームが運転席に向いたホーンスピーカとするもの
であり、スピーカ６３．６５は第一の実施例と同じ、ホ
ーンの正面軸に指向性ビームのあるホーンスピーカを使
用するものである。In this embodiment, the right channel speaker 62 has a directional beam directed toward the passenger seat, the left channel speaker 64 is a horn speaker with a directional beam directed toward the driver's seat, and the speakers 63 and 65 are the first speakers. This example uses a horn speaker with a directional beam on the front axis of the horn, as in the embodiment.
さらに、ここでは図示しないが、反射のチャンネルに向
けて音を放射するスピーカ６２及び６４には第一の実施
例と同様に、電気的な遅延器と減衰器を接続して両チャ
ンネルからの応答が等しくなるように補正を行なうもの
であり、本実施例の音響的な効果は第一の実施例のスピ
ーカ装置とほんど同じである。車載用スピーカでは、車
種によってスピーカの設置位置あるいは取り付は角度等
が限定される。そこで、これに対応するスピーカの取り
付は手段として本実施例は有効である。即ち、第６図の
実施例では左右両チャンネルの２Ｍのホーンスピーカの
ホーン開口は、それぞれ、運転席及び助手席に向かって
揃えて設置したが、音響管の長さによって、指向性のビ
ームを任意の方向に向けることができるため、高音用の
スピーカの設置方向は基本的に任意の方向とすることが
可能となるものであり、スピーカ設置の自由度は大幅に
向上する。Furthermore, although not shown here, electrical delayers and attenuators are connected to the speakers 62 and 64, which emit sound toward the reflection channel, as in the first embodiment, so that the responses from both channels can be adjusted. The acoustic effect of this embodiment is almost the same as that of the speaker device of the first embodiment. Regarding in-vehicle speakers, the installation position or mounting angle of the speaker is limited depending on the vehicle type. Therefore, the present embodiment is effective as a means for attaching a speaker corresponding to this. That is, in the embodiment shown in FIG. 6, the horn openings of the 2M horn speakers for both the left and right channels were installed aligned toward the driver's seat and passenger seat, respectively, but depending on the length of the acoustic tube, the directional beams could be Since it can be oriented in any direction, the treble speaker can basically be installed in any direction, and the degree of freedom in installing the speaker is greatly improved.
さらに、本実施例では、両チャンネルからの応答を等し
くするため、１＆ｌｌのスビーカムこは電気的な遅延器
と減衰器によって補正を行なったが、第三の実施例で示
したように、音響管の長さによって音響的に遅延と減衰
の効果を得ることは可能である。Furthermore, in this example, in order to equalize the responses from both channels, the 1&ll sound camera was corrected using an electrical delay device and attenuator, but as shown in the third example, the sound tube It is possible to obtain acoustic delay and attenuation effects by changing the length of the .
発明の効果
以上のように本発明は、ホーンドライバーに複数個の音
響管を連結し、上記音響管の先端にそれぞれホーンを結
合し、上記ホーンを複数個集めてユニット化して車室の
左右両端に、それぞれ２組のホーンスピーカを構成する
ものであり、音響管長を各々同一長にするか、もしくは
段階的に変化させることによって、ホーン開口を音の放
射方向に向かって設置するか、あるいは、ホーンの配列
方向が任意の方向であっても、ホーン開口の指向性ビー
ムが運転席と助手席にのみ向かうような鋭い指向性を有
するスピーカを実現できるものである。Effects of the Invention As described above, the present invention connects a plurality of acoustic tubes to a horn driver, connects a horn to the tip of each of the acoustic tubes, collects a plurality of the horns into a unit, and connects a plurality of acoustic tubes to a horn driver, and connects a plurality of the horns to form a unit. In this case, two sets of horn speakers are respectively configured, and the acoustic tube lengths are made the same length or are changed in stages, so that the horn opening is installed toward the direction of sound radiation, or Even if the horns are arranged in any direction, it is possible to realize a speaker with such sharp directivity that the directional beam of the horn opening is directed only toward the driver's seat and the passenger's seat.
さらに、運転席あるいは助手席の受聴点において、左右
両チャンネルからの音の応答が等しくなるような電気的
あるいは音響的な位相の遅延手段と音圧レベルの減衰手
段を片チャンネルの少なくとも１組のスピーカに備え、
また、ダツシュボード下に設置し、その放射音を床面で
反射５拡散させた中低音用スピーカを上記高音用スピー
カと併用することにより、受聴点によらず自然なステレ
オ音場を実現できる車載用スピーカ装置を提供するもの
である。Further, at the listening point of the driver's or passenger's seat, at least one set of electrical or acoustic phase delay means and sound pressure level attenuation means for one channel are installed so that the sound response from both the left and right channels is equal. Prepare for the speaker,
In addition, by using a mid-bass speaker that is installed under the dash board and whose radiated sound is reflected and diffused on the floor surface with the above-mentioned treble speaker, a natural stereo sound field can be achieved regardless of the listening point. The present invention provides a speaker device.
第１図は本発明の第一の実施例の車載用スピーカ装置の
構成図、第２図は本発明の第一の実施例に用いた高音用
ホーンスピーカの構造詳細図、第３図（ａ）は本発明の
第一の実施例における高音用ホーンスピーカの音圧指向
特性図、第３図ｂ）は従来のホーンスピーカの音圧指向
特性図、第４図は本発明の第二の実施例における高音用
ホーンスピーカの構造平面図、第５図は本発明の第三の
実施例における高音用スピーカの構造詳細図、第６図は
本発明の第四の実施例における車載用スピーカ装置の構
成図、第７図は本発明の第四の実施例における高音用ス
ピーカの構造詳ｍ図、第８図は従来の車載用スピーカ装
置の構成図である。
７・・・・・・ダツシュボード、１０． ＩＬ １２．
１３．６２゜６３、６４．６５・・・・・・高音用スピ
ーカ、１４．１５．６６、６７・・・・・・中低音用ス
ピーカ、１９・・・・・・遅延器、２０・・・・・・減
衰器、２５．２６．２７．２８．２９．３０．３７．３
８．３９．４０゜４Ｌ ４２．４９．５０．５Ｌ ５２
．５３．５４．６８．６９．７０゜７Ｌ ７２．７３・
・・・・・音響管、３Ｌ ３２．３３．３４．３５．３
６゜４３、４４．４５．４６．４７．４８．５５．５６
．５７．５８．５９゜６０、７４．７５．７６、７７、
７８．７９・・・・・・ホーン。
代理人の氏名 弁理士 小鍜治 明 ばか２名２４−
ホーンド゛ライ１（−
５〜３０−一一書智青
３１−：３６−−−広−ソ
第２図
第３図
□軸上
一一π０
一軸上
ｍ−３０゜
潤 ５皮 １！ ＣＨｔ）
２４− ホーンドライバ
ｎ〜４２− 者雫管
４３〜４８− ホーン
１ｇ４ 図
４／ ４８
２４− ホーンドラ イハ゛−
′Ｊ−Ｒ伝
・、６５″ＬＪ
、、ト区
、ハＦ工
心−一
話一任
５−−−ホーンドライバ
６８〜７／−ａ ”ｆ Ｉ！
′１４〜７９−ホーン
第７図
第 ８ 図
１−ｍ−運転席
２−−一助手 席
５．６一−−中色１用スピーカ
７− タラシスボード
８．９−＊ ’Ｍ Ｐ８スご−力FIG. 1 is a configuration diagram of a vehicle-mounted speaker device according to a first embodiment of the present invention, FIG. 2 is a detailed structural diagram of a high-pitched horn speaker used in the first embodiment of the present invention, and FIG. ) is a sound pressure directivity characteristic diagram of a high-pitched horn speaker according to the first embodiment of the present invention, FIG. 3b) is a sound pressure directivity characteristic diagram of a conventional horn speaker, and FIG. 4 is a sound pressure directivity characteristic diagram of a conventional horn speaker. FIG. 5 is a structural plan view of a high-pitched horn speaker according to the third embodiment of the present invention, and FIG. 6 is a detailed structural diagram of a high-pitched speaker according to a fourth embodiment of the present invention. FIG. 7 is a detailed structural diagram of a high-pitched speaker according to a fourth embodiment of the present invention, and FIG. 8 is a structural diagram of a conventional vehicle-mounted speaker device. 7... Datsushi board, 10. IL12.
13.62゜63, 64.65...Treble speaker, 14.15.66, 67...Medium/bass speaker, 19...Delay device, 20... ...Attenuator, 25.26.27.28.29.30.37.3
8.39.40゜4L 42.49.50.5L 52
．． 53.54.68.69.70°7L 72.73・
...Acoustic tube, 3L 32.33.34.35.3
6°43, 44.45.46.47.48.55.56
．． 57.58.59°60, 74.75.76, 77,
78.79...Horn. Name of agent: Patent attorney Akira Okaji Two idiots 24-
Horn Dry 1 (- 5 ~ 30 - 11 Sho Chisei 31 -: 36 - - Wide - So Fig. 2 Fig. 3 □ On axis 11 π0 On axis m - 30° Jun 5 skin 1! CHt) 24- Horn driver n~42- Drop pipe 43~48- Horn 1g4 Figure 4/48 24- Horn driver n~42- Horn driver n~42- Horn 1g4 Figure 4/48 ---Horn driver 68~7/-a "f I! '14~79-Horn Figure 7 Figure 8 Figure 1-m-Driver seat 2--Passenger seat 5.6--Speaker 7 for medium color 1-Thalasis board 8.9-*'M P8 speed
Claims (13)
上記音響管の先端にそれぞれホーンを結合し、上記ホー
ンを複数個集めてユニット化して２組みのホーンスピー
カを構成し、上記ホーンスピーカの一方が運転席、他方
が助手席にのみ音を放射する鋭い指向性を有する２つの
音源として、上記２つの音源を車室の左右それぞれに設
置し、上記２つの音源から出た音が運転席と助手席の受
聴者に同時に到達する遅延手段と音圧レベルを等しくす
る減衰手段を少なくとも一方の音源に備えたことを特徴
とする車載用スピーカ装置。(1) Multiple acoustic tubes connected to a horn driver,
A horn is connected to each tip of the acoustic tube, and a plurality of the horns are assembled into a unit to form two sets of horn speakers, one of which emits sound only to the driver's seat and the other to the passenger seat. The two sound sources having sharp directivity are installed on the left and right sides of the vehicle interior, and a delay means and sound pressure are provided so that the sound emitted from the two sound sources simultaneously reaches listeners in the driver's seat and passenger seat. A vehicle-mounted speaker device characterized in that at least one sound source is provided with attenuation means for equalizing levels.
の１組のホーンスピーカのホーン開口を助手席に向かっ
て設置したことを特徴とする請求項（１）記載の車載用
スピーカ装置。(2) The vehicle-mounted speaker device according to claim 1, wherein the horn openings of one set of horn speakers are installed toward the driver's seat, and the horn openings of the other set of horn speakers are installed toward the passenger seat.
ことを特徴とする請求項（１）記載の車載用スピーカ装
置。(3) The vehicle-mounted speaker device according to claim (1), wherein the horn openings are arranged in a straight line to form a unit.
事を特徴とする請求項（１）記載の車載用スピーカ装置
。(4) The vehicle-mounted speaker device according to claim (1), characterized in that the openings of the horn are arranged in an annular shape to form a unit.
を構成したことを特徴とする請求項（１）記載の車載用
スピーカ装置。(5) The vehicle-mounted speaker device according to claim (1), wherein two horn drivers constitute two sets of horn speakers.
を特徴とする請求項（１）記載の車載用スピーカ装置。(6) The vehicle-mounted speaker device according to claim (1), wherein the delay means and the attenuation means are electrical means.
を特徴とする請求項（１）記載の車載用スピーカ装置。(7) The vehicle-mounted speaker device according to claim (1), wherein the delay means and the attenuation means are acoustic means.
までの行路差に相当する長さを有する音響管であること
を特徴とする請求項（７）記載の車載用スピーカ装置。(8) The vehicle-mounted speaker device according to claim (7), wherein the acoustic delay means and the attenuation means are acoustic tubes having a length corresponding to a path difference to the respective listening points.
を構成したことを特徴とする請求項（８）記載の車載用
スピーカ装置。(9) The vehicle-mounted speaker device according to claim (8), characterized in that two sets of horn speakers are configured by one horn driver.
とする請求項（１）記載の車載用スピーカ装置。(10) The vehicle-mounted speaker device according to claim (1), wherein the length of each acoustic tube increases in stages.
は助手席に向かって略揃えて設置したことを特徴とする
請求項（１０）記載の車載用スピーカ装置。(11) The vehicle-mounted speaker device according to claim (10), wherein the horn openings of the two sets of horn speakers are installed so as to be substantially aligned toward a driver's seat or a passenger seat.
する請求項（１）記載の車載用スピーカ装置。(12) The in-vehicle speaker device according to claim (1), characterized in that it is also used with a speaker device for medium and low frequencies.
けて放射音を床面で反射，拡散させたことを特徴とする
請求項（１２）記載の車載用スピーカ装置。(13) The vehicle-mounted speaker device according to claim (12), characterized in that the speaker device for medium and low frequencies is provided under the dashboard so that the radiated sound is reflected and diffused on the floor surface.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2302031A JP2606441B2 (en) | 1990-11-06 | 1990-11-06 | In-vehicle speaker device |
| EP91304147A EP0457487B1 (en) | 1990-05-18 | 1991-05-08 | Horn speaker |
| DE69116728T DE69116728T2 (en) | 1990-05-18 | 1991-05-08 | Horn speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2302031A JP2606441B2 (en) | 1990-11-06 | 1990-11-06 | In-vehicle speaker device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04172799A true JPH04172799A (en) | 1992-06-19 |
| JP2606441B2 JP2606441B2 (en) | 1997-05-07 |
Family
ID=17904073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2302031A Expired - Fee Related JP2606441B2 (en) | 1990-05-18 | 1990-11-06 | In-vehicle speaker device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2606441B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004126258A (en) * | 2002-10-03 | 2004-04-22 | Nippon Telegr & Teleph Corp <Ntt> | Wearable communication device |
| JP2005141079A (en) * | 2003-11-07 | 2005-06-02 | Patoraito:Kk | Speech signal annunciator device and mars light equipped therewith |
| JP2005272030A (en) * | 2004-03-23 | 2005-10-06 | Mitsubishi Electric Corp | Voice guidance device for passenger conveyor |
| JP2009290663A (en) * | 2008-05-30 | 2009-12-10 | Pioneer Electronic Corp | On-vehicle speaker system |
| JP2013179413A (en) * | 2012-02-28 | 2013-09-09 | Nippon Telegr & Teleph Corp <Ntt> | Reproduction signal generation device, reproduction signal generation method and program |
-
1990
- 1990-11-06 JP JP2302031A patent/JP2606441B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004126258A (en) * | 2002-10-03 | 2004-04-22 | Nippon Telegr & Teleph Corp <Ntt> | Wearable communication device |
| JP2005141079A (en) * | 2003-11-07 | 2005-06-02 | Patoraito:Kk | Speech signal annunciator device and mars light equipped therewith |
| JP2005272030A (en) * | 2004-03-23 | 2005-10-06 | Mitsubishi Electric Corp | Voice guidance device for passenger conveyor |
| JP2009290663A (en) * | 2008-05-30 | 2009-12-10 | Pioneer Electronic Corp | On-vehicle speaker system |
| JP2013179413A (en) * | 2012-02-28 | 2013-09-09 | Nippon Telegr & Teleph Corp <Ntt> | Reproduction signal generation device, reproduction signal generation method and program |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2606441B2 (en) | 1997-05-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |