JPH0459837B2 - - Google Patents
Info
- Publication number
- JPH0459837B2 JPH0459837B2 JP18315482A JP18315482A JPH0459837B2 JP H0459837 B2 JPH0459837 B2 JP H0459837B2 JP 18315482 A JP18315482 A JP 18315482A JP 18315482 A JP18315482 A JP 18315482A JP H0459837 B2 JPH0459837 B2 JP H0459837B2
- Authority
- JP
- Japan
- Prior art keywords
- speaker
- sound pressure
- resonant frequency
- speakers
- lowest
- 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.)
- Expired
Links
- 230000000694 effects Effects 0.000 description 6
- 230000008094 contradictory effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- 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
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/26—Spatial arrangements of separate transducers responsive to two or more frequency ranges
Landscapes
- 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)
Description
【発明の詳細な説明】
産業上の利用分野
本発明はエンクロージユアに複数個のスピーカ
を取付けたスピーカ装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a speaker device in which a plurality of speakers are attached to an enclosure.
従来の技術
従来の構成によるスピーカ装置の一例を第２図
に示す。本例は従来タイプのスピーカ装置の非常
に一般的なものであり、スピーカエンクロージユ
ア１にはスピーカ２とそのスピーカ２に接続され
た入力リード線３が設けて構成されている。2. Description of the Related Art An example of a speaker device having a conventional configuration is shown in FIG. This example is a very common conventional type speaker device, in which a speaker enclosure 1 is provided with a speaker 2 and an input lead wire 3 connected to the speaker 2.
発明が解決しようとする課題
上記従来の構成によると最低共振周波数fO附近
の再生音圧を高めようとすると最低共振周波数fO
における共振の鋭さQOを大きくする必要がある
が、QOを大きくするには一般的には有効磁束密
度Ｂと磁気ギヤツプ内の有効ボイスコイル線長ｌ
の積Ｂ×ｌを低下させるか、振動質量Ｍを大きく
する必要があり、いずれにしても、慣性制御領域
（質量制御領域）における変換効率（出力音圧レ
ベル）の低下を伴い、最低共振周波数fO附近の音
圧と出力音圧レベルの大きさは原理的に両立しな
いという問題があり、その様子を第３図のＢ×ｌ
によるスピーカ周波数レスポンスの変化で示す。Problems to be Solved by the Invention According to the above conventional configuration, when trying to increase the reproduced sound pressure near the lowest resonant frequency f O , the lowest resonant frequency f O
It is necessary to increase the resonance sharpness Q O at
It is necessary to reduce the product B×l or increase the vibrating mass M. In either case, the conversion efficiency (output sound pressure level) in the inertia control region (mass control region) decreases, and the lowest resonant frequency There is a problem that the sound pressure near f O and the output sound pressure level are incompatible in principle, and this situation is illustrated in Figure 3 B
This is shown by the change in speaker frequency response.
本発明は上記従来の欠点に鑑み特にハイフアイ
スピーカに要求される最低共振周波数fO附近の低
音の充実と、質量制御領域における変換効率の充
実と二つの相矛盾する性能を達成するスピーカ装
置を提供するものである。 In view of the above-mentioned conventional drawbacks, the present invention provides a speaker device that achieves the two contradictory performances of enriching the bass near the lowest resonance frequency f O required for high-speed speakers and enhancing conversion efficiency in the mass control region. This is what we provide.
課題を解決するための手段
上記課題を解決するために本発明はほぼ同一の
最低共振周波数fOを有し、共振の鋭さQOの比が50
％以上異なる２個以上のスピーカを並列に接続し
た構成としたものである。Means for Solving the Problems In order to solve the above problems, the present invention has substantially the same lowest resonance frequency f O and a resonance sharpness Q O ratio of 50.
This is a configuration in which two or more speakers that differ by at least % are connected in parallel.
作 用
このような構成をとることにより、最低共振周
波数fOの附近では共振の鋭さQOが小さいスピーカ
による音圧がこのスピーカ装置の音圧のほとんど
を占め、最低共振周波数fOより高い周波数の質量
制御領域では共振の鋭さQOが大きなスピーカに
よる音圧がこのスピーカシステムの音圧のほとん
どを占める。このため最低共振周波数附近の音圧
向上と出力音圧レベルの向上との相反する要求を
満足することが可能となる。Effect By adopting this configuration, the sound pressure from the speaker whose resonance sharpness Q O is small near the lowest resonant frequency f O accounts for most of the sound pressure of this speaker device, and the sound pressure of this speaker device is dominated by the sound pressure at frequencies higher than the lowest resonant frequency f O In the mass control region of , the sound pressure due to the loudspeaker with a large resonance sharpness Q O accounts for most of the sound pressure of this loudspeaker system. Therefore, it is possible to satisfy the contradictory demands of improving the sound pressure near the lowest resonant frequency and improving the output sound pressure level.
実施例
以下本発明の一実施例におけるスピーカシステ
ムについて図面とともに説明する。Embodiment A speaker system according to an embodiment of the present invention will be described below with reference to the drawings.
第１図に示すように、スピーカエンクロージユ
ア１１に共振の鋭さQOが非常に大きく、すなわ
ちＢ×ｌが小さくＭの比較的大きなスピーカ１２
と、共振の鋭さQOが小さな、すなわちＢ×ｌが
大きくＭが比較的小さなスピーカ１３とを取付け
る。スピーカ１２とスピーカ１３とはfO値が、ほ
ぼ等しく、スピーカ１３の電気インピーダンスは
スピーカ１２に比べて低いが、スピーカ１２の1/
４以上の範囲にする。またスピーカ１３の振幅直
線性はスピーカ１２より小さくても良い。 As shown in FIG. 1, the speaker enclosure 11 has a relatively large resonance sharpness Q O , that is, a relatively large speaker 12 with small B×l and M.
and a speaker 13 with a small resonance sharpness Q O , that is, a large B×l and a relatively small M is attached. The speaker 12 and the speaker 13 have almost the same f O value, and the electrical impedance of the speaker 13 is lower than that of the speaker 12, but it is 1/1 that of the speaker 12.
Set the range to 4 or higher. Further, the amplitude linearity of the speaker 13 may be smaller than that of the speaker 12.
最低共振周波数fOにおける音圧は共振の鋭さQO
に比例する。そして最低共振周波数fOにおける共
振の鋭さQOは、
QO＝ωOＭ／RE＋（Bl）2／RM
（ωO＝2πfO、RE；スピーカの電気インピーダン
ス、RM；スピーカ振動部の機械抵抗）
である。この結果最低共振周波数fOの附近では、
振動質量Ｍが大きく、Ｂ×ｌが小さいスピーカ１
２の音圧が本実施例のスピーカ装置の音圧のほと
んどを占める。そして一般に最低共振周波数fOに
おけるインピーダンスが、
RE＋（Bl）2／RM
であるため、スピーカ１２，１３を並列に接続し
ても、Blの小さいスピーカ１２に多くの電流が
流れるため最低共振周波数fOにおける音圧は、充
分に得ることができる。 The sound pressure at the lowest resonant frequency f O is the resonance sharpness Q O
is proportional to. The resonance sharpness Q O at the lowest resonant frequency f O is Q O = ω O M/R E + (Bl) 2 / R M (ω O = 2πf O , R E ; electrical impedance of the speaker, R M ; speaker mechanical resistance of the vibrating part). As a result, near the lowest resonant frequency f O ,
Speaker 1 with large vibration mass M and small B×l
The sound pressure of 2 occupies most of the sound pressure of the speaker device of this embodiment. In general, the impedance at the lowest resonant frequency f O is R E + (Bl) 2 / RM , so even if the speakers 12 and 13 are connected in parallel, a large amount of current will flow through the speaker 12 with a small Bl, so the lowest A sufficient sound pressure at the resonant frequency f O can be obtained.
なおスピーカ１３とスピーカ１２はその共振の
鋭さQOの比が１：２程度であると、最低共振周
波数fOにおける音圧は約6dB異なり、音響パワー
で１：４となり、かなり音質上その効果が顕著に
あらわれることが判明した。この結果共振の鋭さ
QOが50％以上異なれば本発明の効果としては充
分である。 Note that if the ratio of the resonance sharpness Q O of the speaker 13 and the speaker 12 is about 1:2, the sound pressure at the lowest resonance frequency f O will differ by about 6 dB, and the sound power will be 1:4, which has a considerable effect on sound quality. was found to be prominent. As a result, the sharpness of the resonance
A difference in Q O of 50% or more is sufficient for the effect of the present invention.
またREと（Bl）2／RMとの比は一般的に１：６〜10 程度であり、（Bl）2／RMの項が左右する。 Further, the ratio between R E and (Bl) 2 / RM is generally about 1:6 to 10, and is influenced by the term (Bl) 2 / RM .
上記とは逆に、最低共振周波数fOより高い周波
数の質量制御領域では、音圧はBlに比例し、振
動質量Ｍに反比例する。その結果質量制御領域で
はBlが大きく、振動質量Ｍの比較的小さなスピ
ーカ１３の音圧が、本実施例のスピーカ装置の音
圧のほとんどを占め出力音圧レベルの向上を図る
ことができる。なおスピーカ１２と１３とを並列
に接続し、スピーカ１３のインピーダンスが低け
れば、特にその効果は大きい。 Contrary to the above, in the mass control region of frequencies higher than the lowest resonant frequency fO , the sound pressure is proportional to Bl and inversely proportional to the vibrating mass M. As a result, in the mass control region, Bl is large and the sound pressure of the speaker 13 with a relatively small vibrating mass M accounts for most of the sound pressure of the speaker device of this embodiment, making it possible to improve the output sound pressure level. Note that the effect is particularly great if the speakers 12 and 13 are connected in parallel and the impedance of the speaker 13 is low.
なお、本発明の実施例では２個のスピーカであ
つたが３個以上のスピーカにおいても本発明は同
様の効果を有する。 Although the embodiment of the present invention uses two speakers, the present invention has similar effects even when three or more speakers are used.
発明の効果
以上のように本発明は、ほぼ同一の最低周波数
を有し、共振の鋭さQOの比が50％以上異なる２
個以上のスピーカを並列に接続することにより、
最低共振周波数fO附近の音圧向上と出力音圧レベ
ルの向上の相反する要求を満足することができ工
業的価値の大なるものである。Effects of the Invention As described above, the present invention provides two methods that have almost the same minimum frequency and a ratio of resonance sharpness Q O that differs by more than 50%.
By connecting more than 1 speakers in parallel,
It is of great industrial value because it can satisfy the contradictory demands of improving the sound pressure near the lowest resonant frequency f O and improving the output sound pressure level.
第１図は本発明の一実施例におけるスピーカ装
置の断面図、第２図は従来のスピーカ装置の断面
図、第３図はスピーカ装置の周波数特性図であ
る。
１２，１３……スピーカ。
FIG. 1 is a sectional view of a speaker device according to an embodiment of the present invention, FIG. 2 is a sectional view of a conventional speaker device, and FIG. 3 is a frequency characteristic diagram of the speaker device. 12, 13...Speaker.
Claims (1)
さQOの比が50％以上異なる２個以上のスピーカ
を並列に接続してエンクロージユア内に組込んで
なるスピーカ装置。1. A speaker device constructed by connecting two or more speakers in parallel and incorporating them into an enclosure, which have almost the same minimum resonant frequency and differ in resonance sharpness QO ratio by 50% or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18315482A JPS5972293A (en) | 1982-10-18 | 1982-10-18 | Speaker device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18315482A JPS5972293A (en) | 1982-10-18 | 1982-10-18 | Speaker device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5972293A JPS5972293A (en) | 1984-04-24 |
| JPH0459837B2 true JPH0459837B2 (en) | 1992-09-24 |
Family
ID=16130737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18315482A Granted JPS5972293A (en) | 1982-10-18 | 1982-10-18 | Speaker device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5972293A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2605480B1 (en) * | 1986-10-21 | 1990-08-17 | Pillerault Clement Eloise | METHOD FOR FRACTIONATING THE SOUND RESTITUTION OF MODULATED SIGNALS IN TRANSDUCERS MOUNTED IN PARALLEL, AND CORRESPONDING TRANSDUCER SETS |
-
1982
- 1982-10-18 JP JP18315482A patent/JPS5972293A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5972293A (en) | 1984-04-24 |
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