JP5691012B1 - Earphone attachment for environmental noise insulation - Google Patents
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Abstract
【課題】環境騒音の遮音性能、再生音の通音性能、共に、安定して一定水準を満足する、能動電子回路を持たない、イヤホン用の 低価格でパッシブ型 の騒音遮音アタッチメント【解決手段】耳栓用アブソーバに、貫通していない第1穴を設け、その穴の底に、さらに、貫通していない第2穴を設けることで、耳道入口付近でアブソーバのコアピースの中空部へのめり込みを防ぐ。第１穴に装着するコアピースの耳道側の切り口に切り欠きを設け、イヤホンの装着状態の若干の調節によって、耳道の入口とコアピースの切り欠き部とが対面することを可能とし、その部分の局所的なアブソーバの中空部へのめり込みを防ぐ。【選択図】図１[PROBLEMS] To provide a low-cost, passive noise insulation attachment for earphones that does not have an active electronic circuit and stably satisfies a certain level of sound insulation performance for environmental noise and sound transmission performance for reproduced sound. A first hole that does not penetrate is provided in the earplug absorber, and a second hole that is not penetrated is provided at the bottom of the hole, so that the core piece of the absorber is recessed into the hollow part near the ear canal entrance. prevent. A cutout is provided at the cutout on the ear canal side of the core piece to be fitted in the first hole, and the earpiece entrance and the cutout portion of the core piece can face each other by slightly adjusting the wearing state of the earphone. Prevents local penetration of the absorber into the hollow part. [Selection] Figure 1
Description
イヤホンの環境騒音の遮音
遮音用アブソーバ
以下の説明、及び、請求項を含む全文において、下記の用語を定義する。
一つの請求項で定義した用語は他の請求項と明細書においても同様であるとする。
｛｝の内側は｛｝の外側に優先して意味を持つ。
設計とは、｛部品や商品の完成状態を机上で定義づける｝ことを意味する。
イヤホンとはカナル型と呼ばれるインナーイヤホンとする。
特性とは｛感度 または レベル｝の周波数特性とする。
The following terms are defined in the entire text including the following explanation and claims.
Terms defined in one claim are the same in other claims and in the description.
The inner side of {} has priority over the outer side of {}.
Design means {defining the completed state of parts and products on a desk}.
The earphone is an inner earphone called a canal type.
The characteristic is the frequency characteristic of {sensitivity or level}.
２０１４年５月現在、携帯端末に組み込まれた高機能のプレーヤの普及に伴い、多種多様なイヤホンが市販されている。また、人口が密集する大都会では、長時間鉄道通勤時、モバイルプレーヤとイヤホンで音楽を聴いている人は多い。地下鉄の場合、大きければ85dB以上の騒音環境で音楽を聴いている。イヤホンの標準的なアタッチメントでは、85dBほどの強い騒音環境の中での快適なリスニングができない。
一方、高性能のアクティブ型のノイズキャンセラも市販さされているが、高価格であることと、騒音検出用のマイクロホンや信号処理用の電子回路や補助電源が必要なことから、小形化に限度があり、普及の度合いは極めて低い。
As of May 2014, with the widespread use of highly functional players incorporated in mobile terminals, a wide variety of earphones are commercially available. Also, in a large city with a dense population, many people listen to music with mobile players and earphones when commuting to the railway for a long time. In the case of the subway, if it is large, it listens to music in a noise environment of 85 dB or more. The standard earphone attachment does not allow comfortable listening in a noise environment as strong as 85 dB.
On the other hand, high-performance active noise cancellers are also available on the market, but there is a limit to downsizing due to the high price and the need for noise detection microphones, signal processing electronics and auxiliary power supplies. Yes, the degree of diffusion is very low.
プレーヤとして最も一般的なスマートフォンに、ノイズキャンセルの機能を組み込むにも、｛市販されているスマートフォン上で動作｝という条件を満足することはできない。その理由は、スマートフォンのCPUの資源利用に制約がある。２０１４年５月現在と、その延長線上では、｛｛低ノイズ化、音響的にリアルタイム処理化｝が必修であるところの｛高性能のノイズキャンセルの構築｝｝が現状のスマートフォンのOSでは可能な状態にない、ことにある。 Even if a noise canceling function is incorporated in a smartphone that is most common as a player, the condition of {operation on a commercially available smartphone} cannot be satisfied. The reason for this is that there are restrictions on the use of smartphone CPU resources. As of May 2014 and on its extension, {{building low-noise, acoustically real-time processing} where {required {building high-performance noise cancellation}} is possible with the current smartphone OS It is not in a state.
２０１４年５月現在で、イヤホン用のパッシブ型の高性能の環境騒音の遮音効果を達成するための性能面での難しい技術的課題は、
第１に、｛イヤホン内通過騒音｝を減衰させなければならない。
第２に、第１の課題の解決は、同時にイヤホンの再生音をも減衰させることにつながる。
第３に、トレードオフ関係にあって、｛相矛盾する第１と第２の課題｝の双方をクリアーしなければならない、と同時に｛イヤホン外通過騒音｝をも減衰させなければならない。
第４に、｛アブソーバ｝の素材の｛遮音性能、吸音性能｝を小さなサイズで安定させることが難しい。例えば、アブソーバの染料によっても基本性能が大きく左右される。商品を耳に装着することから色やサイズの嗜好は多様であり、基本性能が染料に左右されることは好ましくない。
フォームと呼ばれる多孔質の｛アブソーバ｝の音響品質のコントロールは難しく、特に小さいものは性能面でバラツキが大きいのが現状である。
第５に、外耳と耳道の構造的関係は複雑で微妙で｛形状、大きさ｝の個人差の影響を受ける。
第６に、耳に装着した状態での、定量的な｛遮音性と通音性｝の特性測定が、一般の官能テストと同様、｛速く、大量に｝こなすことができない。
As of May 2014, difficult technical issues in terms of performance to achieve the sound insulation effect of passive high-performance environmental noise for earphones are:
First, {in-earphone noise} must be attenuated.
Second, the solution to the first problem leads to attenuation of the reproduced sound of the earphone at the same time.
Third, in a trade-off relationship, both {the first and second conflicting issues} must be cleared, and at the same time, {the outside earphone noise} must be attenuated.
Fourth, it is difficult to stabilize the {absorber} material {sound insulation performance, sound absorption performance} with a small size. For example, the basic performance is greatly influenced by the dye of the absorber. Since the product is worn on the ear, tastes of color and size are diverse, and it is not preferable that the basic performance depends on the dye.
It is difficult to control the acoustic quality of a porous {absorber} called a foam, and particularly small ones have a large variation in performance.
Fifth, the structural relationship between the outer ear and auditory canal is complex and subtle, and is affected by individual differences in shape and size.
Sixth, quantitative {sound insulation and sound transmission} characteristic measurement in the state worn on the ear cannot be done {fast and in large quantities}, as in general sensory tests.
２０１４年５月現在、下記の参考文献を製品化した｛サイレントピース｝なる商品名で、耳栓の素材を使った比較的性能の良い、イヤホン用のアタッチメントが市場で低価格で販売されている。この商品は、安価で手軽に遮音できるが、染料による｛アブソーバ｝の個々の発泡具合のバラツキ、使用上の装着具合のバラツキ、イヤホンの種類によるバラツキなどのファクターにより、｛遮音性能と通音性能のバランス｝の課題に照らして、ある一定範囲の許容できないバラツキがあって、完成度の向上が求められている。
As of May 2014, there is a product name {silent piece} that commercializes the following references, and relatively good performance earphone attachments using earplug materials are sold at a low price in the market. . This product is inexpensive and can be sound-insulated easily, but depending on factors such as variations in the individual foam of {absorber} due to the dye, variation in the wearing condition in use, variation due to the type of earphone, etc., {sound insulation performance and sound transmission performance In light of the balance problem, there is an unacceptable variation within a certain range, and an improvement in completeness is required.
参考になる特許文献、
特開 2009-219095 インナーイヤホン用遮音エレメントとインナーイヤホンと音響再生装置。
現在市販されている｛遮音ピース｝であり、性能のバラツキを押さえ完成度の向上が望まれている。
Referenced patent literature,
JP, 2009-219095, A Sound insulation element for inner earphones, an inner earphone, and a sound reproduction device.
It is a {sound insulation piece} currently on the market, and it is desired to improve the degree of completeness while suppressing the variation in performance.
特開 2012-050049 イヤホンとイヤホン用遮音エレメント
現在市販されている｛遮音ピース｝であり、性能のバラツキを押さえ完成度の向上が望まれている。
[Patent Document 1] JP-A-2012-050049 Earphones and sound insulation elements for earphones {Sound insulation pieces} that are currently on the market, and it is desired to improve the degree of completeness while suppressing variation in performance.
特開 2013-086257 イヤホン用遮音エレメントとその製造工程
現在市販されている｛遮音ピース｝の製造方法である。
JP, 2013-086257, A Sound insulation element for earphones and its manufacturing process It is a manufacturing method of {sound insulation piece} currently marketed.
｛複雑かつ繊細な構造の耳道の入口付近の形状｝に押し潰された状態で使用され、｛遮音性能と通音性能｝の双方が決定されるところにある。｛遮音性と通音性｝は常に相矛盾するファクターであって、双方を独立させて設計することが極めて難しい。完全に独立して設計できないものの、トレードオフ関係にあるファクターの独立性を高めることができれば、設計の選択肢が広がり、品質のレベルアップを図ることができる。
It is used in a state where it is crushed into a {shape near the entrance to the ear canal having a complicated and delicate structure}, and both {sound insulation performance and sound transmission performance} are determined. {Sound insulation and sound transmission} are always contradictory factors, and it is extremely difficult to design them independently. Although it cannot be designed completely independently, if the independence of factors in a trade-off relationship can be increased, design options can be expanded and quality can be improved.
現状の｛アブソーバ｝を使った環境騒音の遮音用アッタチメントの｛出口側｝に小さな直径の穴を設けることで、｛使用状態における、押しつぶされた｛アブソーバ｝が｛コアピース｝の中空部にめり込む｝ことによる通音性の劣化を防ぐことができる。 By providing a small-diameter hole on the {exit side} of the environmental noise insulation attachment using the current {absorber}, {the crushed {absorber} in the used state will sink into the hollow portion of the {core piece}} Therefore, it is possible to prevent deterioration of sound transmission.
上記の解決手段は 課題 での記述のとおり、｛遮音ピース｝の市場評価をもとに、測定治具の改良や測定条件の工夫も含め、カットアンドトライによる改良を重ねることにより、至った結果によるものであって、力学的な定量分析や理論的な計算に基づくものではない。
As described in the section above, the above solution is based on the market evaluation of {sound insulation piece}, and the results achieved through repeated improvements by cut and try, including improvements to measurement jigs and improvements to measurement conditions. And not based on dynamic quantitative analysis or theoretical calculations.
本発明は、以下に記載されるような効果を生む。
第１に、｛第１穴｝と｛第２穴｝のファクターの選択により｛強いトレードオフ関係にあるところの｛遮音性と通音性｝｝を｛より独立性の高い関係｝に改善できる。
結果、第２穴のファクターの調節によって｛遮音性と通音性｝のバランスのバラツキを抑えることができ、かつ、音質に重要なファクターである通音性を設計レベルで決定できる。
The present invention produces effects as described below.
First, by selecting factors of {first hole} and {second hole}, {sound insulation and sound transmission}, which are in a strong trade-off relationship, can be improved to a {more independent relationship}. .
As a result, the variation in the balance of {sound insulation and sound transmission} can be suppressed by adjusting the factor of the second hole, and sound transmission, which is an important factor for sound quality, can be determined at the design level.
第１に、イヤホン用の、パッシブ型の低価格で高性能な環境騒音の遮音用アタッチメント。
First, a passive, low-cost, high-performance environmental noise insulation attachment for earphones.
第１に、商品としてのイヤホン用の環境騒音の遮音用アタッチメントの流通。
第２に、環境騒音の遮音用アタッチメントを備えたイヤホンの流通。
第３に、長時間の国際線航空機内での、強騒音中のエンターテイメントのリスニング用イヤホン。
First, distribution of sound insulation attachments for environmental noise for earphones as products.
Second, the distribution of earphones equipped with attachments for sound insulation of environmental noise.
Third, earphones for listening to entertainment during strong international noise on long international flights.
図１は、本案発明の一実施例の説明図。
１はイヤホン、２は耳道、３は耳、４は｛アブソーバ｝、５は｛アブソーバ｝に設けた｛第２穴｝、６は｛コアピース｝、１１は環境騒音、１２は｛イヤホン外通過騒音｝の通過経路、１３は｛イヤホン外通過騒音｝の耳道への到達分、１４は｛イヤホン内通過騒音｝の通過経路、１５は｛イヤホン内通過騒音｝の｛コアピース｝の通過分、１６は｛イヤホン内通過騒音｝の耳道への到達分である。
｛第２穴｝の存在によって、耳道入口付近で、｛アブソーバ｝が｛コアピース｝内部にめりこまなくなり、｛イヤホンの再生音の通音性｝と｛｛イヤホン内通過騒音｝の遮音性｝が安定する。
｛第２穴｝が無ければ、後述の図２の説明のように｛アブソーバ｝が｛コアピース｝の出口付近でめり込んだようになり、｛イヤホン内通過騒音｝は減衰するが、同時に、イヤホンの再生音の高音域での減衰が激しいことから商品の品質としては好ましくない。環境騒音も減衰させなければならないが、イヤホンの通過再生音も一定水準を満足しなければならない。｛第２穴｝は、イヤホンを装着した状態で発生する耳道の入口付近での｛｛アブソーバ｝の予測できない変形｝を｛期待どおりの変形｝にとどめる役割を持つ。
FIG. 1 is an explanatory diagram of an embodiment of the present invention.
1 is an earphone, 2 is an auditory canal, 3 is an ear, 4 is {absorber}, 5 is a {second hole} provided in {absorber}, 6 is a {core piece}, 11 is environmental noise, and 12 is outside the earphone Passage of noise}, 13 is a passage of {passing noise outside earphone} to the ear canal, 14 is a passage of {passing noise inside earphone}, 15 is a passage of {core piece} of {passing noise inside earphone}, Reference numeral 16 denotes the amount of {noise passing through the earphone} reaching the ear canal.
Due to the presence of the {second hole}, the {absorber} does not get stuck inside the {core piece} near the entrance of the ear canal, and the sound insulation of {the sound transmission of the earphone reproduction sound} and {{the noise passing through the earphone} } Is stable.
If there is no {second hole}, {absorber} will be sunk in the vicinity of the exit of {core piece}, and {in-earphone noise} will be attenuated as shown in FIG. Since the attenuation of the reproduced sound in the high sound range is severe, the quality of the product is not preferable. Environmental noise must also be attenuated, but the earphone passing sound must also satisfy a certain level. The {second hole} has the role of keeping {{the unpredictable deformation of the absorber}} in the vicinity of the entrance of the ear canal generated with the earphone attached to {the deformation as expected}.
聴覚へ到達する主な外部騒音は｛イヤホン外通過騒音｝である。85dBを超える騒音中では、騒音が不快と感じなくなるには、およそ25dB以上の高音域の遮音効果を必要とする。ところが｛イヤホン外通過騒音｝に対し15dBを超える遮音効果を作用させると、イヤホン内通過騒音が残る。したがって、地下鉄での快適なリスニングには、｛イヤホン内通過騒音｝の遮音が必要条件になる。｛イヤホン内通過騒音｝はイヤホンの種類によっても大きな差があるが、いずれにせよ、10dBないし15dB程度のイヤホン内通過騒音の遮音が必要であって、それ以上の遮音は通音性の妨げになる。以上のような理由で、｛イヤホン内通過騒音｝は過不足が発生しないよう、この値はコントロールされなければならない。この、再生音の減衰は主に高域で発生する、この、10ないし15dBの減衰は、一般的なイコライザで補正できる範囲でもあることから、実用に耐えられる範囲にある。 The main external noise that reaches the auditory sense is {outside earphone passing noise}. In noise exceeding 85 dB, a high-frequency sound insulation effect of approximately 25 dB or more is required to prevent the noise from being uncomfortable. However, if a sound insulation effect exceeding 15 dB is applied to {passing noise outside the earphone}, the passing noise inside the earphone remains. Therefore, for comfortable listening in the subway, the sound insulation of {in-earphone noise} is a necessary condition. {Noise passing through the earphone} varies greatly depending on the type of earphone, but in any case, it is necessary to isolate the noise passing through the earphone of about 10dB to 15dB. Become. For the reasons described above, this value must be controlled so that {the noise passing through the earphone} does not occur. This attenuation of the reproduced sound occurs mainly in the high range, and this attenuation of 10 to 15 dB is within a range that can be practically used because it is a range that can be corrected by a general equalizer.
低音の遮音性は主として｛アブソーバ｝の長さに依存する。｛アブソーバ｝を長くすれば低音の遮音性を向上させる。｛アブソーバ｝の長さについては本案発明の範囲外にあるので説明を省略する。 The sound insulation of the bass depends mainly on the length of the {absorber}. If the {absorber} is lengthened, the sound insulation of bass is improved. Since the length of {absorber} is outside the scope of the present invention, the description thereof is omitted.
図２は、従来の｛遮音ピース｝の耳道入口付近の｛アブソーバ｝の変形の状態を示す。
７は、装着時｛アブソーバ｝が押しつぶされて、｛コアピース｝の内部にめりこんで局部的に膨らんだ状態を示す。
図１と同番号は同機能である。イヤホンを装着した状態にも依存するが、｛アブソーバ｝が図２のように｛コアピース｝の耳道側の出口にめり込むことによって、出口の通音効果を妨げる。｛アブソーバ｝はもともと、遮音性、吸音性に優れた材質であることから、図２のように音の出口で｛アブソーバ｝の厚みが増すと、遮音効果が強くなり、環境騒音も遮音されるがイヤホンの再生音も遮音され、音質の劣化を生じる。このような状態は｛角度や強さなどの装着状態｝や｛個人個人の｛耳の形状、耳道の入口の大きさや形状｝｝など、幾つかの条件の組み合わせによって発生することから、一定以上の割合で通音性能と遮音性能のバランスの悪いものが市場で発生する。
FIG. 2 shows a state of deformation of {absorber} in the vicinity of the ear canal entrance of the conventional {sound insulation piece}.
7 shows a state where {absorber} is crushed and swollen into the interior of {core piece} and locally swells when mounted.
The same number as FIG. 1 is the same function. Although depending on the state of wearing the earphone, the {absorber} sinks into the exit on the ear canal side of the {core piece} as shown in FIG. Since {absorber} is originally a material with excellent sound insulation and sound absorption properties, increasing the thickness of {absorber} at the sound outlet as shown in FIG. However, the playback sound of the earphone is also sound-insulated, resulting in deterioration of sound quality. Such a state is caused by a combination of several conditions such as {wearing state such as angle and strength} and {individual {ear shape, size and shape of ear canal entrance}}. At the above rate, products with poor balance between sound transmission performance and sound insulation performance occur in the market.
図３は、イヤホンに本案発明の遮音ピースを装着した状態の一例を示す。
図３の図１と同番号は同機能である。第2穴が小径であることから、耳に装着しない状態での改善前後の特性には顕著な違いはない。
FIG. 3 shows an example of a state in which the sound insulation piece of the present invention is attached to the earphone.
The same reference numerals as those in FIG. 1 in FIG. Since the second hole has a small diameter, there is no significant difference between the characteristics before and after the improvement without wearing the ear.
図４は、イヤホンに従来の遮音ピースを装着した状態の一例を示す。
図４の図１と同番号は同機能である。
FIG. 4 shows an example of a state in which a conventional sound insulation piece is attached to the earphone.
The same reference numerals as those in FIG. 1 in FIG. 4 denote the same functions.
図５は、本案発明の｛アブソーバ｝の加工図の一例である。
２１は｛アブソーバ｝、２２は｛第1穴｝、２３は｛第2穴｝、L0は｛アブソーバ｝の全長、D0は｛アブソーバ｝の外直径、D1は｛第1穴｝の直径、D2は「第2穴」の直径、T1は｛第1厚み｝の厚み、T2は｛第2厚み｝の厚みである。いずれの寸法も｛遮音特性と通音特性｝の双方に影響を持つ。
D0とL0は本案発明の本質と関係ないが｛遮音ピース｝にとっては低音域の遮音効果にとって重要なファクターである。また、D0、L0共、｛適合する耳のサイズ｝や感覚的な｛デザイン性と装着性｝にも大きく影響するので、必ずしも性能面だけで決定されるものではない。いずれにせよ、本案発明の範囲外であることから詳細説明を省略する。
実験的ではあるが、D1、D2、T1、T2は｛アブソーバ｝の気泡の｛きめ細かさやその度合いの安定性｝によって決定できる。
気泡のきめが細かく安定しているアブソーバの一代表例の｛D1、D2、T1、T2｝は、それぞれ｛3mm、1mm、2.5mm、1mm｝がある。
気泡のきめが荒く不安定な｛アブソーバ｝の一代表例の｛D1、D2、T1、T2｝は、それぞれ｛3mm、1mm、4.5mm、2mm｝がある。
FIG. 5 is an example of a processed drawing of {absorber} of the present invention.
21 is {absorber}, 22 is {first hole}, 23 is {second hole}, L0 is the total length of {absorber}, D0 is the outer diameter of {absorber}, D1 is the diameter of {first hole}, D2 Is the diameter of the “second hole”, T1 is the thickness of {first thickness}, and T2 is the thickness of {second thickness}. Both dimensions affect both {sound insulation characteristics and sound transmission characteristics}.
D0 and L0 are not related to the essence of the present invention, but are important factors for the sound insulation effect in the low sound range for {sound insulation piece}. In addition, both D0 and L0 greatly affect {applicable ear size} and sensory {designability and wearability}, and are not necessarily determined only by performance. In any case, the detailed description is omitted because it is out of the scope of the present invention.
Although experimental, D1, D2, T1, and T2 can be determined by {the fineness and stability of the degree} of the {absorber} bubbles.
{D1, D2, T1, T2}, which are representative examples of absorbers with fine and stable bubbles, have {3 mm, 1 mm, 2.5 mm, 1 mm}, respectively.
{D1, D2, T1, T2}, which are representative examples of {absorbers} with rough and unstable bubbles, have {3 mm, 1 mm, 4.5 mm, 2 mm}, respectively.
図６は、従来の｛アブソーバ｝の加工図の一例である。
図６の図５と同番号は同機能である。
｛アブソーバ｝の一代表例の｛D1、T1｝は、それぞれ｛3mm、3.5mm｝がある。
FIG. 6 is an example of a processing diagram of a conventional {absorber}.
The same reference numerals as those in FIG. 5 in FIG.
{D1, T1} as a representative example of {absorber} has {3 mm, 3.5 mm}, respectively.
図７は、遮音特性の比較例を示す。
従来の｛遮音ピース｝の、アブソーバの気泡が荒く遮音特性のバラツキが大きい素材を使った場合の、本案発明の｛遮音ピース｝を｛一例のイヤホン｝に装着した場合の遮音特性の実測値である。
３１は測定用の環境騒音の代わりのホワイトノイズをイヤホンが無い状態で測定したものであって、測定系の音響特性は補正されている。この特性は｛実際にイヤホンを耳に装着した状態での絶対特性｝とは異なるが、図中の全ての測定結果は｛相対特性の観点から｝実使用状態と同じ傾向であり、聴覚による官能検査と同じ傾向にある。
FIG. 7 shows a comparative example of sound insulation characteristics.
The measured sound insulation characteristics when the {sound insulation piece} of the present invention is attached to a {example earphone} when the conventional {sound insulation piece} is made of a material with large bubbles in the absorber and large variations in the sound insulation characteristics. is there.
Reference numeral 31 is a measurement of white noise instead of measurement environmental noise in the absence of an earphone, and the acoustic characteristics of the measurement system are corrected. This characteristic is different from the {absolute characteristic when the earphone is actually worn on the ear}, but all the measurement results in the figure are the same tendency as the actual use state {from the viewpoint of relative characteristics}. It has the same tendency as the inspection.
３２は｛標準的なシリコンゴム素材のイヤホンピース｝であり、参考例である。
３３は、改善前の｛低遮音性にバラツキを持つ｛遮音ピース｝｝、
３４は改善前の｛高遮音性にバラツキを持つ｛遮音ピース｝｝、
３５は本案発明による改善後の｛低遮音性にバラツキを持つ｛遮音ピース｝｝、
３６は本案発明による改善後の｛高遮音性にバラツキを持つ｛遮音ピース｝｝の場合の遮音特性例である。
Reference numeral 32 denotes a {standard earphone piece made of silicon rubber material}, which is a reference example.
33 is {improvement of low sound insulation property {sound insulation piece}} before improvement,
34 before improvement {varies in high sound insulation property {sound insulation piece}},
35 is an improved {sound insulation piece with a variation in low sound insulation property {sound insulation piece}} according to the present invention.
36 is an example of a sound insulation characteristic in the case of {a sound insulation piece having a variation in high sound insulation properties} after improvement according to the present invention.
｛３３と３４｝は｛同じロットからの｛アブソーバ｝を使った｛遮音ピース｝の改善前｝であるが、｛３３と３４｝の違いは｛発砲度合いのバラツキが原因の個体差｝によるものである。遮音性に、3000Hzから7000Hzでは約15dBの差があり、遮音性に関しての問題はないが、通音性は｛リスニングの音質の高域減衰｝が大きく、実用上の支障がある。 {33 and 34} are {Before improvement of {sound insulation piece} using {absorber} from the same lot}, but the difference between {33 and 34} is due to {individual difference caused by variation in firing degree} It is. There is a difference of about 15 dB in sound insulation from 3000 Hz to 7000 Hz, and there is no problem with sound insulation, but the sound transmission has a large practical problem because {the high-frequency attenuation of the listening sound quality}.
｛３５と３６｝は｛同じロットからの｛アブソーバ｝を使った｛遮音ピース｝の改善後｝であるが、｛３５と３６｝の違いは｛発砲度合いのバラツキが原因の個体差｝によるものである。 {35 and 36} are {after improvement of {sound insulation piece} using {absorber} from the same lot}, but the difference between {35 and 36} is due to {individual difference due to variation in firing degree} It is.
図８は、通音特性の比較例を示す。
図８は、測定系の音響特性が補正されていない特性である。
｛遮音ピース｝の、アブソーバの気泡が荒く遮音特性のバラツキが大きい素材を使った場合の二例について、それぞれ、本案発明の改善前後の｛遮音ピース｝の一例のイヤホンに装着した場合の通音特性の実測値の比較である。
FIG. 8 shows a comparative example of sound passing characteristics.
FIG. 8 shows characteristics in which the acoustic characteristics of the measurement system are not corrected.
Two examples of {Sound Insulation Pieces} using materials with rough absorber bubbles and large variations in sound insulation characteristics, respectively, through the earphones of one example of {Sound Insulation Piece} before and after improvement of the present invention This is a comparison of actual measured values of characteristics.
４１はイヤホンの耳用のアタッチメントが無い状態で測定したものであって、参考例である。
４２は｛標準的なシリコンゴム素材のイヤホンピース｝の場合で、参考例である。
図８の全ての特性に、3000Hzから7000Hzの範囲で盛り上がりがあるが、これはイヤホン固有の構造と測定系の構造に起因するものでさる。一般的に、実使用状態のイヤホンの絶対的な音響特性を推定することは難しい。しかし、図中の全ての測定結果は｛相対特性の観点から｝実使用状態と同じ傾向であり、聴覚による官能検査と同じ傾向にある。
４３は、改善前の｛低遮音性にバラツキを持つ｛遮音ピース｝｝、
４４は改善前の｛高遮音性にバラツキを持つ｛遮音ピース｝｝、
４５は本案発明による改善後の｛低遮音性にバラツキを持つ｛遮音ピース｝｝、
４６は本案発明による改善後の｛高遮音性にバラツキを持つ｛遮音ピース｝｝の通音特性例である。
Reference numeral 41 is a reference example measured without an earphone ear attachment.
Reference numeral 42 denotes a {standard earphone piece made of silicon rubber material}, which is a reference example.
All the characteristics in FIG. 8 have a rise in the range of 3000 Hz to 7000 Hz, which is caused by the structure unique to the earphone and the structure of the measurement system. In general, it is difficult to estimate an absolute acoustic characteristic of an earphone in actual use. However, all the measurement results in the figure have the same tendency as in the actual use state {from the viewpoint of relative characteristics} and the same tendency as the sensory test by auditory sense.
43 is {improvement of low sound insulation property {sound insulation piece}} before improvement,
44 is {improvement in sound insulation property {sound insulation piece}} before improvement,
45 is an improved {insulation with low sound insulation property {sound insulation piece}} after improvement according to the present invention.
Reference numeral 46 is an example of the sound passing characteristic of the {sound insulation piece} having a variation in the high sound insulation property after the improvement according to the present invention.
｛４３と４４｝は｛同じロットからの｛アブソーバ｝を使った｛遮音ピース｝の改善前｝であるが、
｛４３と４４｝の違いは｛｛アブソーバ｝の発砲度合いのバラツキ｝による個体差によるものである。3000Hzから7000Hzの通音性に、約20dBdBの差があり、実用上大きな支障がある。
｛４５と４６｝は｛同じロットからの｛アブソーバ｝を使った｛遮音ピース｝の改善後｝である。
｛４５と４６｝双方の違いは発砲度合いのバラツキによる個体差によるものである。
3000Hz付近の通音性の差は、約3dBであり、通音性のバラツキが｛４３と４４｝に比べ大幅に改善されている。
{43 and 44} are {before improvement of {sound insulation piece} using {absorber} from the same lot,
The difference between {43 and 44} is due to individual differences due to {{absorber} firing degree variation}. There is a difference of about 20dBdB in the sound transmission from 3000Hz to 7000Hz, and there is a big problem in practical use.
{45 and 46} are {after improvement of {sound insulation piece} using {absorber} from the same lot}.
The difference between {45 and 46} is due to individual differences due to variations in the degree of firing.
The difference in sound permeability around 3000 Hz is about 3 dB, and the variation in sound permeability is greatly improved compared to {43 and 44}.
図７と図８の説明からわかるように、本案発明による｛遮音性と通音性｝のバラツキが大幅に改善されているだけでなく、双方とも、実用的に良い方向に改善さている。 As can be seen from the description of FIGS. 7 and 8, not only the variation in {sound insulation and sound transmission} according to the present invention is greatly improved, but both are improved in a practically good direction.
1 イヤホン
2 耳道
3 耳
4 ｛アブソーバ｝
5 ｛第２穴｝
6 ｛コアピース｝
7 ｛アブソーバ｝が｛コアピース｝にめり込んだ部分
11 環境騒音
12 ｛イヤホン外通過環境騒音｝の進入経路
13 耳道に進入する｛イヤホン外通過環境騒音｝
14 ｛イヤホン内通過騒音｝の進入路
15 イヤホンを通過して、｛コアピース｝を通過する｛イヤホン内通過騒音｝
16 耳道に進入する｛イヤホン内通過騒音｝
21 加工状態の｛アブソーバ｝
22 加工状態の｛第1穴｝
23 加工状態の｛第2穴｝
D0 加工状態の｛アブソーバ｝の外形
D1 加工状態の｛第１穴｝の直径
D2 加工状態の｛第２穴｝の直径
L0 加工状態の｛遮音ピース｝の長さ
T1 加工状態の｛第１厚み｝
T2 加工状態の｛第２厚み｝
31 測定系の特性を補正済みの外部環境騒音
32 ｛通常のシリコンゴム素材のイヤホンピース｝による遮音特性例
33 改善前の、低遮音性にバラツキを持つ｛遮音ピース｝による遮音特性
34 改善前の、高遮音性にバラツキを持つ｛遮音ピース｝による遮音特性
35 改善後の、低遮音性にバラツキを持つ｛遮音ピース｝による遮音特性
36 改善後の、高遮音性にバラツキを持つ｛遮音ピース｝による遮音特性
41 イヤホンからイヤホンピースを外した状態の通音特性
42 ｛通常のシリコンゴム素材のイヤホンピース｝による通音特性例
43 改善前の低遮音性にバラツキを持つ｛遮音ピース｝による通音特性
44 改善前の高遮音性にバラツキを持つ｛遮音ピース｝による通音特性
45 改善後の低遮音性にバラツキを持つ｛遮音ピース｝による通音特性
46 改善後の高遮音性にバラツキを持つ｛遮音ピース｝による通音特性
1 Earphone
2 ear canal
3 ears
4 {Absorber}
5 {2nd hole}
6 {Corepiece}
7 The part where {absorber} is embedded in {core piece}
11 Environmental noise
12 Approach route of {Non-earphone environmental noise}
13 Entering the ear canal {Environmental noise outside the earphone}
14 Entry path of {In-earphone noise}
15 Passing through the earphone and passing through the {core piece} {Passing noise inside the earphone}
16 Entering the auditory canal {noise passing through the earphone}
21 Processed {absorber}
22 Processed {1st hole}
23 Processed {2nd hole}
D0 Outline of {Absorber} in machining state
D1 Diameter of processed {first hole}
D2 Diameter of {second hole} in machining state
L0 Length of processed {sound insulation piece}
T1 Processed {first thickness}
{2nd thickness} in T2 processing state
31 External environmental noise with corrected measurement system characteristics
32 Example of sound insulation characteristics using {normal silicone rubber earphone piece}
33 Sound-insulation characteristics with {sound-insulation piece} with low noise insulation variation before improvement
34 Sound insulation characteristics by using {sound insulation piece} with high sound insulation variation before improvement
35 Improved sound insulation characteristics with {sound insulation piece} with low sound insulation variation
36 Improved sound insulation characteristics with {sound insulation piece} with high sound insulation variation
41 Sound transmission characteristics with the earphone piece removed from the earphone
42 Example of sound transmission characteristics with {normal silicone rubber earphone piece}
43 Sound transmission characteristics with {sound insulation piece} with low noise insulation before improvement
44 Sound transmission characteristics with {sound insulation piece} with high sound insulation before improvement
45 Sound transmission characteristics by the {sound insulation piece} with a variation in low sound insulation after improvement
46 Sound transmission characteristics with {sound insulation piece} with high sound insulation variation after improvement
Claims (3)
｛アブソーバ｝は一端が凸球面、他方が｛円形平面または凹球面｝形状であるとし、
凸球面の側を｛出口側｝、他方を｛入口側｝とし、
｛入口側｝から｛出口側｝に向かう穴を｛第１穴｝とし、
｛第１穴｝の直径を｛第１穴径｝とし、
｛第１穴｝は｛出口側｝に貫通していないものとし、
｛第１穴｝の底の｛出口側｝に残された｛アブソーバ｝の厚みを｛第１厚み｝とし、
｛第１穴｝の底面を｛第１穴底面｝とし、
｛第１穴底面｝から｛出口側｝に向かう穴を｛第２穴｝とし、
｛第２穴｝の直径を｛第２穴径｝とし、
｛第２穴径｝は｛第１穴径｝よりも細いものとし、
｛第２穴｝は｛出口側｝に貫通していないものとし、
｛第２穴｝による｛出口側｝に残された｛アブソーバ｝の厚みを｛第２厚み｝とし、
｛第２穴｝の底面を｛第２穴底面｝とし、
変形が可能な｛ゴムまたはゴム状の化学合成素材｝の中空のチューブ状であって、｛第1穴｝に収まる部品を｛コアピース｝とし、
｛コアピース｝の外径は｛アブソーバ｝の加工状態で｛第1穴径｝よりも大きいとし、
｛コアピース｝の入口側はイヤホンの音の出口に着脱できる構造を持つものとし、
｛コアピース｝の入口側は｛アブソーバ｝の入口側の面から外側に出ていない構造を持つものとし、
｛コアピース｝の中空穴はイヤホンからの音を｛アブソーバ｝の｛第１厚み｝と｛第２厚み｝の部分に音を導く役割を持つものとし、
｛コアピース｝の出口側は｛第１穴底面｝に達している、かまたは、｛第１穴底面｝に接近しているものとし、
｛第1底面｝と｛第２底面｝の形状は｛平面または凹円錐または凹球面｝のいずれかまたはそれらの中間の形状であるものとし、
｛第１穴｝と｛第２穴｝を有する｛アブソーバ｝と｛コアピース｝を組みあわせたものを｛遮音ピース｝とし、
｛遮音ピース｝をイヤホンに装着し、イヤホンでリスニングをしている状態で、イヤホン本体を通過して聴覚に至る環境騒音の成分を｛イヤホン内通過騒音｝とし、
イヤホンと耳の間を通過して聴覚に至る環境騒音の成分を｛イヤホン外通過騒音｝とし、
イヤホンの再生音の聴覚に至る再生音を｛通過再生音｝とし、
｛遮音ピース｝をイヤホンに装着し、｛遮音ピース｝の｛出口側｝が耳道の入口に達している状態にあるとき、
｛｛通過再生音｝の｛遮音ピース｝による減衰｝なる実用上不都合な傾向である性質と、｛イヤホン内通過騒音｝の｛遮音ピース｝による減衰｝なる実用上好都合な傾向である性質と、｛｛イヤホン外通過騒音｝の｛遮音ピース｝による減衰｝なる実用上好都合な傾向である性質との｛三種類の性質が、いずれかの性質に集中せず、実用的にバランスが取れる｝よう、｛第1穴径｝と｛第２穴径｝と｛第1厚み｝と｛第2厚み｝の組みあわせを選択することによって適正な状態に合わせることができるところの、｛第２穴｝を有することを第１の特長とする、イヤホンの環境騒音遮音用アタッチメント。 The earplug material is {absorber}
{Absorber} has a convex spherical surface at one end and a {circular or concave spherical surface] at the other end.
The convex spherical side is {exit side}, the other is {entrance side}
The hole from {inlet side} to {exit side} is {first hole}
The diameter of the {first hole} is {first hole diameter},
{1st hole} does not penetrate {exit side}
The thickness of the {absorber} left on the {exit side} at the bottom of the {first hole} is {first thickness},
The bottom of {first hole} is {first hole bottom},
The hole from the {bottom of the first hole} to the {exit side} is {second hole},
The diameter of {second hole} is {second hole diameter},
{2nd hole diameter} is thinner than {1st hole diameter}
{2nd hole} does not penetrate {exit side}
The thickness of {absorber} left on {exit side} by {second hole} is {second thickness},
The bottom of {second hole} is {second hole bottom},
A hollow tube of deformable {rubber or rubber-like chemical synthetic material}, and the part that fits in {first hole} is {core piece},
The outer diameter of {core piece} is larger than {first hole diameter} in the processed state of {absorber}
The entrance side of the {core piece} shall be detachable from the earphone sound outlet,
The entrance side of the {core piece} shall have a structure that does not protrude outward from the entrance side surface of the {absorber}
The hollow hole of the {core piece} has the role of guiding the sound from the earphone to the {first thickness} and {second thickness} portions of the {absorber}
The exit side of the {core piece} has reached the {bottom of the first hole}, or is approaching the {bottom of the first hole},
The shape of {first bottom surface} and {second bottom surface} is either {plane or concave cone or concave spherical surface} or an intermediate shape thereof,
{Sound insulation piece} is a combination of {absorber} and {core piece} having {first hole} and {second hole},
With the {sound insulation piece} attached to the earphone and listening with the earphone, the environmental noise component that passes through the earphone body and reaches the hearing is {in-earphone passing noise},
The environmental noise component that passes between the earphone and the ear and reaches the auditory sense is {outside earphone noise}
The playback sound that reaches the ear of the playback sound of the earphone is defined as {passing playback sound}
When the {sound insulation piece} is attached to the earphone, and the {exit side} of the {sound insulation piece} reaches the entrance to the ear canal,
{{Attenuation by {sound insulation piece}} of {{passing reproduced sound}} and a property that is a practically favorable tendency of {attenuation by {sound insulation piece}} of {in-earphone passing noise}; {{Attenuation due to {sound insulation piece} of {passing noise outside the earphone}} and a property that is a practically favorable tendency {Three types of properties do not concentrate on any of the properties, and can be balanced practically} , {Second hole} where {first hole diameter}, {second hole diameter}, {first thickness}, and {second thickness} can be combined to select an appropriate state. A first feature of the present invention is an attachment for sound insulation of an environmental noise of an earphone.
｛第1厚み｝が｛｛アブソーバ｝の加工状態｝で1.5mm以上6mm以下の範囲にあるものとし、
｛第２厚み｝が｛｛アブソーバ｝の加工状態｝で1mm以上、3mm以下の範囲にあるものとし、
｛第２穴径｝が｛｛アブソーバ｝の加工状態｝で0.3mm以上、2mm以下の範囲にあるものとし、
｛第1穴径｝が｛｛アブソーバ｝の加工状態｝で1.5mm以上5mm以下の範囲にあるものとし、
上記の範囲にある寸法の｛アブソーバ｝であることを第２の特長とし、
請求項１に定義の第１の特長に加え、第２の特長を有するイヤホンの環境騒音遮音用アタッチメント。 Regarding the dimensions of {absorber} as defined in claim 1,
It is assumed that {first thickness} is in the range of 1.5 mm to 6 mm in {{absorber} processing state}
The {second thickness} is in the range of 1 mm or more and 3 mm or less in {{absorber} processing state}
It is assumed that {second hole diameter} is in the range of 0.3 mm or more and 2 mm or less in {{absorber} machining state}
{1st hole diameter} is in the range of 1.5mm to 5mm in {{absorber} machining state}
The second feature is that it is an {absorber} with dimensions in the above range,
An attachment for earphone environmental noise insulation having the second feature in addition to the first feature defined in claim 1.
An earphone having an environmental noise insulation attachment as defined in claim 1.
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| JP2014101178A JP5691012B1 (en) | 2014-05-15 | 2014-05-15 | Earphone attachment for environmental noise insulation |
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| Application Number | Priority Date | Filing Date | Title |
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| JP2014101178A JP5691012B1 (en) | 2014-05-15 | 2014-05-15 | Earphone attachment for environmental noise insulation |
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| JP5691012B1 true JP5691012B1 (en) | 2015-04-01 |
| JP2015220518A JP2015220518A (en) | 2015-12-07 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5237421A (en) * | 1975-09-19 | 1977-03-23 | Tani Denki Kogyo Kk | Earplug type transmitter-receiver |
| JP3035669U (en) * | 1996-09-11 | 1997-03-28 | 株式会社シマダ製作所 | Air conduction bone conduction dual use receiver for ear canal wearing |
| JP2009219095A (en) * | 2008-03-12 | 2009-09-24 | Junichi Kakumoto | Sound insulating element for inner earphone, inner earphone, and sound reproducing device |
| JP2012050049A (en) * | 2010-08-30 | 2012-03-08 | Junichi Kakumoto | Earphone and sound isolation element for earphone |
-
2014
- 2014-05-15 JP JP2014101178A patent/JP5691012B1/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5237421A (en) * | 1975-09-19 | 1977-03-23 | Tani Denki Kogyo Kk | Earplug type transmitter-receiver |
| JP3035669U (en) * | 1996-09-11 | 1997-03-28 | 株式会社シマダ製作所 | Air conduction bone conduction dual use receiver for ear canal wearing |
| JP2009219095A (en) * | 2008-03-12 | 2009-09-24 | Junichi Kakumoto | Sound insulating element for inner earphone, inner earphone, and sound reproducing device |
| JP2012050049A (en) * | 2010-08-30 | 2012-03-08 | Junichi Kakumoto | Earphone and sound isolation element for earphone |
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| Publication number | Publication date |
|---|---|
| JP2015220518A (en) | 2015-12-07 |
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