JPS622863Y2 - - Google Patents
Info
- Publication number
- JPS622863Y2 JPS622863Y2 JP3033881U JP3033881U JPS622863Y2 JP S622863 Y2 JPS622863 Y2 JP S622863Y2 JP 3033881 U JP3033881 U JP 3033881U JP 3033881 U JP3033881 U JP 3033881U JP S622863 Y2 JPS622863 Y2 JP S622863Y2
- Authority
- JP
- Japan
- Prior art keywords
- holes
- sound
- headphone
- sound pressure
- acoustic resistance
- 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
- 230000005540 biological transmission Effects 0.000 claims description 10
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 230000006866 deterioration Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000011491 glass wool Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Landscapes
- Headphones And Earphones (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Description
【考案の詳細な説明】
この考案はヘツドホーンの音質調整装置に係り
さらに詳しくは再生音圧周波数特性を可変できる
ようにしたオープンエア型ヘツドホーンに関する
ものである。[Detailed Description of the Invention] This invention relates to a headphone sound quality adjustment device, and more specifically, to an open air headphone in which the reproduced sound pressure frequency characteristics can be varied.
一般にヘツドホーンで音楽を聴く場合、音楽の
ジヤンルあるいは演奏方式等に応じて音響特性を
変えることが望ましく、例えばクラシツク音楽で
は再生周波数特性をほぼフラツトに、ポピユラ
ー、ジヤズ等では低域周波数特性を多少持ち上げ
ることが聴感上最適な音質といわれている。従来
は上記最適な音質を得るために使用するアンプの
トーンコントロール回路を用いていたが、トーン
コントロール回路は時定数回路を用いるため、位
相歪、高調波歪、過渡歪等が悪化して音質を損う
危険性があつた。 Generally, when listening to music with a headphone, it is desirable to change the acoustic characteristics depending on the genre of the music or performance method. For example, for classical music, the reproduction frequency characteristics should be almost flat, and for popular music, jazz, etc., the low frequency characteristics should be slightly raised. This is said to be the optimal sound quality for audible perception. Conventionally, the amplifier's tone control circuit was used to obtain the above-mentioned optimal sound quality, but since the tone control circuit uses a time constant circuit, phase distortion, harmonic distortion, transient distortion, etc. deteriorate and the sound quality deteriorates. There was a risk of loss.
一方、ヘツドホーン側においても、例えば特開
昭52−82216号公報に開示されているヘツドホー
ンのように、ヘツドホーンユニツトの振動板の背
後に設けられた空気室とヘツドホーンユニツトを
内包するケースの内部とを連通するための通気孔
を覆うたわみ性のある音響減衰材料と（例えば多
孔質ゴム、プラスチツク）、この音響減衰材料の
密度を調整するための圧縮手段とを備え、圧縮手
段によつて音響減衰材料の密度を調整し、振動板
背後における音響抵抗を連続的に可変できるよう
にしてヘツドホーンの低域周波数特性を調整する
ものが提案されている。しかしながら、この方式
によると、圧縮のくり返しで音響減衰材料の弾性
が変化あるいは劣化して同じ圧縮量を与えても初
期と同等の密度が得られなくなつたり、長時間圧
縮された状態より圧縮量を減少させて新らたな密
度状態に設定したとしても弾性の劣化によつて新
らたな密度状態に復帰できなくなることがあり、
圧縮量に対する音響抵抗の変化特性が経時変化に
よつて初期の特性を再現できず、それゆえ、経時
変化の影響の少ない圧縮範囲に限定して使用しな
ければならず、密度可変範囲すなわち音響抵抗可
変範囲を拡くすることが困難であつた。本考案は
上述した従来の欠点を解決するものであり、ヘツ
ドホーンユニツトの振動板の背後に形成される音
圧伝送系路内に、振動板の背後に出力される再生
音圧を通過させる通音孔第１の板部と、通音孔と
連通して再生音圧を通過させる孔を少なくとも通
音孔よりも多数個有する第２の板部とを設け、孔
には通音孔と連通する孔を任意に選択すべく第１
の板部もしくは第２の板部のいずれか一方を他方
に対して摺動自在となすとともに孔の選択切換に
応じて音圧伝送系路の音響抵抗値が変化するよう
孔に音響抵抗値の異る音響抵抗部材を充填するこ
とにより、通音孔に連通する孔を選択切換して音
圧伝送系路の音響抵抗値を可変するようにしたヘ
ツドホーンの音質調整装置を提供する。 On the other hand, on the headphone side, for example, as in the headphone disclosed in Japanese Unexamined Patent Publication No. 52-82216, there is an air chamber provided behind the diaphragm of the headphone unit and the inside of the case containing the headphone unit. a flexible acoustic attenuating material (e.g., porous rubber, plastic) covering the vent for communicating with the air vents; and compression means for adjusting the density of the acoustic attenuation material; It has been proposed to adjust the low frequency characteristics of a headphone by adjusting the density of the damping material and continuously varying the acoustic resistance behind the diaphragm. However, with this method, the elasticity of the acoustic attenuating material changes or deteriorates with repeated compressions, and even if the same amount of compression is given, the same density as the initial one cannot be obtained, or the amount of compression becomes lower than the amount of compression that has been compressed for a long time. Even if a new density state is set by decreasing the density, it may not be possible to return to the new density state due to elastic deterioration.
The change characteristics of the acoustic resistance with respect to the amount of compression cannot reproduce the initial characteristics due to changes over time. Therefore, it must be used only in the compression range where the influence of changes over time is small, and the density variable range, that is, the acoustic resistance It was difficult to widen the variable range. The present invention solves the above-mentioned conventional drawbacks, and includes a sound pressure transmission line formed behind the diaphragm of the headphone unit through which the reproduced sound pressure output behind the diaphragm passes. A sound hole first plate part and a second plate part having at least more holes than the sound holes through which reproduced sound pressure passes through which communicate with the sound holes, the holes communicate with the sound holes. In order to arbitrarily select the hole to
Either the plate part or the second plate part is slidable relative to the other, and the hole is provided with an acoustic resistance value so that the acoustic resistance value of the sound pressure transmission system changes according to the selection change of the hole. To provide a sound quality adjustment device for a headphone in which the acoustic resistance value of a sound pressure transmission path is varied by selectively switching holes communicating with sound holes by filling different acoustic resistance members.
次にこの考案を図示の実施例により説明する。 Next, this invention will be explained with reference to illustrated embodiments.
第１図は本考案の実施例を示す断面図で、図中
１はリング状磁石、２はセンターポール、３はプ
レートで、これら各部材でスピーカユニツトの磁
気回路を形成している。磁石１とセンターポール
とのギヤツプ４内にはボイスコイル５を垂設して
備えると共にこのボイスコイル５を有する振動板
６はそのエツジ部がスピーカユニツトケース７に
取付けられることにより保持される。８はユニツ
トケース中央に設けられた通気孔であり、振動板
６の背後に放出された再生音圧を後述する背気室
に導入するものである。上述したユニツトケース
７はヘツドホーンケース９内に固定され、ユニツ
トケース７の後部に対向するヘツドホーンケース
９の開口部には第２図に示すような複数個の通音
孔ａ，ｂ，ｃを有し、ヘツドホーンケース９の内
部に固定された固定板１０と、この固定板１０に
軸１２で回動自在に重ね合わされ、複数個の導入
孔Ａ（A1，A2，A3）、Ｂ（B1，Ｂ，B3）、Ｃ
（C1，C2，C3）を有する回動板１１（第３図）と
が取付けられており、回動板１１の各孔Ａ，Ｂ，
Ｃにはそれぞれ音響抵抗の異なる音響抵抗部材
A0，B0，C0を充填されている。通音孔ａ，ｂ，
ｃと導入孔Ａ，／Ｂ，Ｃとはお互いに対応する位
置関係にあり、回動板を回動することにより孔
（ａ，ｂ，ｃ）と孔（A1，A2，A3）、孔（ａ，
ｂ，ｃ）と孔（B1，B2，B3）、孔（ａ，ｂ，ｃ）
と孔（C1，C2，C3）の組合わせが可能となる。音
響抵抗部材A0，B0，C0は素材としてポリウレタ
ン、グラスウール、フエルト等が用いられ、
A0，B0，C0を同素材にした場合にはその密度を
変えることにより音響抵抗を加減する。ユニツト
ケース７と固定板１０との間の空間は背気室１３
である。したがつて通気孔８を経て背気室１３に
導入された再生音圧は通音孔ａ，ｂ，ｃ、導入孔
Ａ，Ｂ，Ｃのうちいずれかを通つてヘツドホーン
ケース９外に導出される。又固定板１０と回動板
１１とを背気室内に設けて背気室内の音響抵抗を
可変するようにしてもよい。なお、１４は回動板
１１を回動操作する操作つまみである。 FIG. 1 is a sectional view showing an embodiment of the present invention. In the figure, 1 is a ring-shaped magnet, 2 is a center pole, and 3 is a plate. These members form a magnetic circuit of a speaker unit. A voice coil 5 is provided vertically in the gap 4 between the magnet 1 and the center pole, and the diaphragm 6 having the voice coil 5 is held by its edge portion being attached to the speaker unit case 7. Reference numeral 8 denotes a ventilation hole provided at the center of the unit case, which introduces the reproduced sound pressure released behind the diaphragm 6 into a back air chamber to be described later. The above-mentioned unit case 7 is fixed in a headphone case 9, and the opening of the headphone case 9 facing the rear of the unit case 7 has a plurality of sound holes a, b, c as shown in FIG. It has a fixing plate 10 fixed inside the headphone case 9, and a plurality of introduction holes A (A 1 , A 2 , A 3 ) which are rotatably superimposed on the fixing plate 10 around a shaft 12. , B (B 1 , B, B 3 ), C
(C 1 , C 2 , C 3 ) is attached to the rotating plate 11 (Fig. 3), and each hole A, B,
C has acoustic resistance members with different acoustic resistances.
It is filled with A 0 , B 0 , and C 0 . Sound holes a, b,
c and the introduction holes A, /B, and C are in a positional relationship that corresponds to each other, and by rotating the rotating plate, the holes (a, b, c) and the holes (A 1 , A 2 , A 3 ) , hole (a,
b, c) and holes (B 1 , B 2 , B 3 ), holes (a, b, c)
and holes (C 1 , C 2 , C 3 ) can be combined. The acoustic resistance members A 0 , B 0 , C 0 are made of polyurethane, glass wool, felt, etc.
When A 0 , B 0 , and C 0 are made of the same material, the acoustic resistance can be adjusted by changing their density. The space between the unit case 7 and the fixed plate 10 is a back air chamber 13.
It is. Therefore, the reproduced sound pressure introduced into the back air chamber 13 through the ventilation hole 8 is led out of the headphone case 9 through one of the sound holes a, b, and c and the introduction holes A, B, and C. be done. Alternatively, the fixed plate 10 and the rotating plate 11 may be provided in the back air chamber to vary the acoustic resistance within the back air chamber. Note that 14 is an operation knob for rotating the rotating plate 11.
次に上記構成の操作について説明すると、まず
本実施例において音響抵抗部材A0，B0，C0の音
響抵抗の関係をC0＞B0＞A0と設定し、なを且つ
音響抵抗部材C0を介して再生音圧をヘツドホー
ンケース外に導出した場合に第４図○イに示すよう
にヘツドホーンの音圧周波数特性がフラツトにな
るように設定する。 Next, the operation of the above configuration will be explained. First, in this example, the relationship between the acoustic resistances of the acoustic resistance members A 0 , B 0 , and C 0 is set as C 0 >B 0 >A 0 , and the acoustic resistance members The settings are made so that when the reproduced sound pressure is led out of the headphone case via C0 , the sound pressure frequency characteristic of the headphone becomes flat as shown in Figure 4 (○).
次に回動板１１を操作して通音孔ａ，ｂ，ｃと
導入孔B1，B2，B3とが対応すれば再生音圧は音
響抵抗部材B0を介してヘツドホーン外に導出さ
れるため第４図○ロに示すように低域周波数特性に
わずかなピークを生ずるようになり、低音ブース
トを施したものとなる。又通音孔ａ，ｂ，ｃと導
入孔A1，A2，A3とが対応すれば低域周波数のピ
ークはより大きくなり、ジヤズやポピユラー音楽
に適した特整になる。 Next, by operating the rotating plate 11, if the sound holes a, b, and c correspond to the introduction holes B1 , B2 , and B3 , the reproduced sound pressure will be led out of the headphone via the acoustic resistance member B0 . As a result, as shown in Figure 4, a slight peak occurs in the low frequency characteristics, resulting in a bass boost. Furthermore, if the sound holes a, b, and c correspond to the introduction holes A 1 , A 2 , and A 3 , the peak of the low frequency range will become larger, making it suitable for jazz and popular music.
次に第５図に示すものは本考案の他の実施例で
あり第５図に示す実施例の音響抵抗可変装置は第
６図に示す構成となる。すなわち、背気室１３内
においてユニツトケース７に固定され、通音孔
ａ，ｂ，ｃ，ｄを有する固定リング１５と、固定
リング１５の外周面にその内周面が接し固定リン
グに対して回動自在で導入孔Ａ（A1，A2，A3，
A4）、Ｂ（B1，B2，B3，B4）、Ｃ（C1，C2，C3，
C4）を有する回動リング１６とを備え、導入孔
Ａ，Ｂ，Ｃにはそれぞれ音響抵抗の異なる部材を
充填する（A0，B0，C0）。したがつてレバー１７
による回動リングの操作で固定リング１５の通音
孔ａ，ｂ，ｃ，ｄに対応する導入孔を選択するこ
とにより振動板６からの再生音圧は通音孔ａ，
ｂ，ｃ，ｄを通り、選択された導入孔を経て放射
状に背気室１３に導入され、ヘツドホーンケース
９に設けられた開孔９ａ，９ｂ，９ｃ，９ｄより
ヘツドホーンケース外に放出される。 Next, what is shown in FIG. 5 is another embodiment of the present invention, and the acoustic resistance variable device of the embodiment shown in FIG. 5 has a configuration shown in FIG. 6. That is, a fixed ring 15 is fixed to the unit case 7 in the back air chamber 13 and has sound holes a, b, c, and d. Rotatable and introducing holes A (A 1 , A 2 , A 3 ,
A 4 ), B (B 1 , B 2 , B 3 , B 4 ), C (C 1 , C 2 , C 3 ,
C 4 ), and the introduction holes A, B, and C are filled with members having different acoustic resistances (A 0 , B 0 , C 0 ). Therefore lever 17
By operating the rotary ring to select the introduction holes corresponding to the sound holes a, b, c, and d of the fixed ring 15, the reproduced sound pressure from the diaphragm 6 is adjusted to the sound holes a, b, c, and d of the fixed ring 15.
b, c, and d, are radially introduced into the back air chamber 13 through selected introduction holes, and are discharged to the outside of the headphone case through openings 9a, 9b, 9c, and 9d provided in the headphone case 9. Ru.
以上述べましたように本考案は、ヘツドホーン
ユニツトの振動板の背後に出力される再生音圧を
該ユニツトを内包するヘツドホーンケース外に導
出する音圧伝送系路を有するヘツドホーンにおい
て、音圧伝送系路内に、振動板の背後に出力され
る再生音圧を通過される通音孔を有する第１の板
部と、通音孔と連通して再生音圧を通過させる孔
を少なくとも通音孔よりも多数個有する第２の板
部とを設け、孔には通音孔と連通する孔を任意に
選択すべく第１の板部もしくは第２の板部のいず
れか一方を他方に対して摺動自在となすとともに
孔の選択切換に応じて音圧伝送系路の音響抵抗値
が変化するよう孔に音響抵抗値の異る音響抵抗部
材を充填することにより、ヘツドホーンの低域再
生周波数特性を調整できるようにしたので、音響
減衰（抵抗）材料を圧縮してその密度を変化させ
ることにより音響抵抗を可変する従来方式におけ
る長期使用あるいは経時変化による音響抵抗材料
の弾性劣化で音響抵抗可変特性が大幅に変化した
り初期に得られていた音響抵抗値が再現できなく
なるというような特性劣化の問題を解消すること
ができる。 As described above, the present invention provides sound pressure transmission in a headphone that has a sound pressure transmission path that leads the reproduced sound pressure output behind the diaphragm of the headphone unit to the outside of the headphone case containing the unit. A first plate portion having a sound hole through which the reproduced sound pressure outputted behind the diaphragm passes, and a hole communicating with the sound hole through which the reproduced sound pressure passes, are provided in the transmission line. A second plate part having a greater number of holes than the sound holes is provided, and one of the first plate part and the second plate part is attached to the other in order to arbitrarily select holes that communicate with the sound holes. By filling the holes with acoustic resistance members with different acoustic resistance values so that the acoustic resistance value of the sound pressure transmission path changes according to the selection change of the hole, low frequency reproduction of the headphone is achieved. Since the frequency characteristics can be adjusted, the acoustic resistance is reduced by the elastic deterioration of the acoustic resistance material due to long-term use or aging compared to the conventional method of changing the acoustic resistance by compressing the acoustic attenuation (resistance) material and changing its density. It is possible to solve the problem of characteristic deterioration, such as the variable characteristic changing significantly or the initially obtained acoustic resistance value not being able to be reproduced.
第１図〜第４図は本考案の１実施例を示し、第
１図はヘツドホーン断面図、第２図、第３図はそ
れぞれ固定板、回動板の１例を示す平面図、第４
図は動作説明に供する周波数特性図、第５図は本
考案の他の実施例を示し、第６図は第５図に示す
実施例の音響抵抗可変装置の平面図である。
符号の説明、１……磁石、２……センターポー
ル、３……プレート、４……ギヤツプ、５……ボ
イスコイル、６……振動板、７……スピーカユニ
ツトケース、、８……通気孔、９……ヘツドホー
ンケース、１０……固定板、１１……回動板、１
２……軸、１３……背気室、１４……操作つま
み、１５……固定リング、１６……回動リング、
１７……レバー、Ａ〜Ｃ……導入孔、ａ〜ｄ……
通音孔。
1 to 4 show one embodiment of the present invention, in which FIG. 1 is a sectional view of the headphone, FIGS. 2 and 3 are plan views showing examples of a fixed plate and a rotating plate, respectively, and FIG.
5 is a frequency characteristic diagram for explaining the operation, FIG. 5 shows another embodiment of the present invention, and FIG. 6 is a plan view of the acoustic resistance variable device of the embodiment shown in FIG. Explanation of symbols, 1...Magnet, 2...Center pole, 3...Plate, 4...Gap, 5...Voice coil, 6...Diaphragm, 7...Speaker unit case, 8...Vent hole , 9... Headphone case, 10... Fixed plate, 11... Rotating plate, 1
2...Shaft, 13...Back air chamber, 14...Operation knob, 15...Fixing ring, 16...Rotating ring,
17...Lever, A~C...Introduction hole, a~d...
Sound hole.
Claims (1)
れる再生音圧を該ユニツトを内包するヘツドホー
ンケース外に導出する音圧伝送系路を有するヘツ
ドホーンにおいて、前記音圧伝送系路内に、振動
板の背後に出力される再生音圧を通過させる通音
孔を有する第１の板部と、前記通音孔と連通して
前記再生音圧を通過させる孔を少なくとも前記通
音孔よりも多数個備えた第２の板部とを設け、前
記通音孔と連通する前記孔を任意に選択すべく前
記第１の板部もしくは前記第２の板部のいずれか
一方を他方に対して摺動自在となすとともに前記
孔の選択切換に応じて前記音圧伝送系路の音響抵
抗値が変化するよう前記孔に音響抵抗値の異る音
響抵抗部材を充填するようにしたことを特徴とす
るヘツドホーンの音質調整装置。 In a headphone having a sound pressure transmission path for leading out the reproduced sound pressure output behind the diaphragm of the headphone unit to the outside of the headphone case containing the unit, a diaphragm is connected to the sound pressure transmission path. A first plate portion having a sound hole behind which the reproduced sound pressure outputted passes through, and at least more holes than the sound holes that communicate with the sound hole and allow the reproduced sound pressure to pass through. a second plate portion, and one of the first plate portion and the second plate portion is slidable relative to the other in order to arbitrarily select the hole that communicates with the sound hole. The headphone is characterized in that the holes are filled with acoustic resistance members having different acoustic resistance values so that the acoustic resistance value of the sound pressure transmission path changes according to selection switching of the holes. Sound quality adjustment device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3033881U JPS622863Y2 (en) | 1981-03-06 | 1981-03-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3033881U JPS622863Y2 (en) | 1981-03-06 | 1981-03-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57143777U JPS57143777U (en) | 1982-09-09 |
| JPS622863Y2 true JPS622863Y2 (en) | 1987-01-22 |
Family
ID=29827854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3033881U Expired JPS622863Y2 (en) | 1981-03-06 | 1981-03-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS622863Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4214868B2 (en) * | 2003-09-04 | 2009-01-28 | パナソニック株式会社 | Electroacoustic transducer and electronic device using the same |
| JP2014225752A (en) * | 2013-05-15 | 2014-12-04 | ホシデン株式会社 | Headphone |
| WO2016031044A1 (en) * | 2014-08-29 | 2016-03-03 | Ｐｉｏｎｅｅｒ ＤＪ株式会社 | Headphone |
-
1981
- 1981-03-06 JP JP3033881U patent/JPS622863Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57143777U (en) | 1982-09-09 |
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