JPH0285637A - Electronic silencer - Google Patents
Electronic silencerInfo
- Publication number
- JPH0285637A JPH0285637A JP63234859A JP23485988A JPH0285637A JP H0285637 A JPH0285637 A JP H0285637A JP 63234859 A JP63234859 A JP 63234859A JP 23485988 A JP23485988 A JP 23485988A JP H0285637 A JPH0285637 A JP H0285637A
- Authority
- JP
- Japan
- Prior art keywords
- sound
- noise
- controller
- living room
- air conditioning
- 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.)
- Pending
Links
- 230000003584 silencer Effects 0.000 title claims abstract description 15
- 238000004378 air conditioning Methods 0.000 claims abstract description 14
- 230000000694 effects Effects 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 206010013647 Drowning Diseases 0.000 abstract 3
- 230000002452 interceptive effect Effects 0.000 abstract 1
- 238000006748 scratching Methods 0.000 description 5
- 230000002393 scratching effect Effects 0.000 description 5
- 230000001743 silencing effect Effects 0.000 description 5
- 230000001902 propagating effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000030279 gene silencing Effects 0.000 description 3
- 239000011358 absorbing material Substances 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000004800 psychological effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1787—General system configurations
- G10K11/17875—General system configurations using an error signal without a reference signal, e.g. pure feedback
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1781—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
- G10K11/17821—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions characterised by the analysis of the input signals only
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/104—Aircos
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/12—Rooms, e.g. ANC inside a room, office, concert hall or automobile cabin
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/301—Computational
- G10K2210/3037—Monitoring various blocks in the flow chart
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/301—Computational
- G10K2210/3045—Multiple acoustic inputs, single acoustic output
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/321—Physical
- G10K2210/3222—Manual tuning
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は空調鳴音と逆位相の付加音を居室に通じる空
調ダクト内で発生させ、音波干渉により消音を行なう電
子消音器に係わり、特に付加音の発生音量を制御し消音
効果を自在に制御できる電子消音器に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an electronic silencer that generates an additional sound having a phase opposite to that of an air conditioner in an air conditioning duct leading to a living room, and muffles the sound by sonic interference. The present invention relates to an electronic silencer that can control the volume of additional sound generated and freely control the silencing effect.
なお、居室という用語は工場内空間やテのプラットホー
ムなど人間が立ち入る建屋空間を含む意味で用いるもの
とする。The term "living room" is used to include building spaces that people enter, such as factory spaces and service platforms.
従来、空調ダクトの鳴音対策は、第２図に示すように居
室７の空間と空調器を接続し居室７の空調を行なう空調
ダクトに、°管内に吸音材を内張すした吸音ダクト１２
や消音エルボなどの吸音形消音器や、音波の反射などを
利用した膨張形消音器を設置して行なっている。しかし
、低周波鳴音の対策が難しく、シかも消音効果は可変で
きないため、空調ダクトからの掻音６で決定される居室
７内の音環境をコントロールすることが不可能であった
。Conventionally, measures against noise from air conditioning ducts have been to install a sound absorbing duct 12, which connects the space in the living room 7 and the air conditioner and performs air conditioning in the living room 7, with a sound absorbing material lined inside the pipe, as shown in Fig. 2.
This is done by installing sound-absorbing mufflers such as sound-absorbing mufflers and muffling elbows, and expansion mufflers that utilize sound wave reflection. However, it is difficult to take countermeasures against low-frequency noise, and the silencing effect cannot be varied, so it has been impossible to control the sound environment in the living room 7 determined by the scratching noise 6 coming from the air conditioning duct.
音環境の快適性は心理的なものが大きく左右するため、
居室７の騒音レベルは必ずしも低レベルであればあるほ
ど好ましいのではなく、利用状態に適したレベルを設定
するべきである。たとえば、静寂な居室７は会議等には
そのまま利用することができるが、事務室等として利用
した場合には、静寂すぎることでかえって適さない。こ
れは、居室７が静寂であることから、となシの部屋の騒
音など外部騒音が居室＾にいる人に明瞭に聞きわけられ
、心理的影響から作業効率が低下するからである。この
ため静寂な居室７を多目的に利用する場合には新たにＢ
ＧＭ（パックグランドミュージック）用スピーカ１１を
居室７内に設置し、利用状態に合せて音楽や雑音等の二
次音を発生させ、会話他の掻音を心理的にマスキングし
、居室の使用条件にあわせた音環境をつくるなどの対策
が行なわれており、そのだめの設備や手間が大変であっ
た。The comfort of the sound environment is greatly influenced by psychological factors, so
The lower the noise level in the living room 7, the better it is, but it should be set at a level that is appropriate for the state of use. For example, the quiet living room 7 can be used as is for meetings, etc., but if used as an office, it would be too quiet and would not be suitable. This is because the living room 7 is quiet, so external noises such as the noise from Tonashi's room can be clearly heard by the people in the living room, which reduces work efficiency due to psychological effects. Therefore, if you want to use the quiet living room 7 for multiple purposes, please add a new B.
A GM (Pack Grand Music) speaker 11 is installed in the living room 7, and generates secondary sounds such as music and noise according to the usage conditions, psychologically masking the sounds of conversation and other sounds, and adjusting the usage conditions of the living room. Countermeasures such as creating a sound environment tailored to the environment were taken, which required a lot of equipment and time.
また、近年では掻音と逆位相の付加音を発生させ、音波
干渉により消音を行なう電子消音器が実用化されており
、空調ダクトの５音対策にすぐれた効果を発揮している
が、もっばら消音効果を最大にすることにのみを目的と
しておシ、居室内の音環境を自由に設定するという発想
はなかった。In addition, in recent years, electronic silencers have been put into practical use that generate an additional sound with the opposite phase to the scratching sound and muffle the sound through sonic interference.Although they are highly effective in countering the five sounds in air conditioning ducts, The purpose was only to maximize the sound reduction effect, and there was no idea of freely setting the sound environment in the living room.
この発明の目的は前記従来技術の欠点を解消し、空調騒
音のレベルを自在に変化させることが可能な電子消音器
を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to eliminate the drawbacks of the prior art and provide an electronic muffler that can freely change the level of air conditioning noise.
電子消音器の音波干渉用付加音の発生音量を自在に制御
するための機能をコントローラに付加し、結果として電
子消音器の消音効果を変化させ、居室等空間の、掻音レ
ベルを新たなスピーカやオーディオ装置等を配置するこ
となく制御するようにしたことを特徴とする。A function is added to the controller to freely control the volume of the additional sound generated by the electronic silencer for sound wave interference, and as a result, the silencing effect of the electronic silencer is changed, and the scratching level in spaces such as living rooms can be adjusted to a new speaker. The system is characterized in that it can be controlled without the need to arrange an audio device or the like.
゛〔実施 例〕
第１図に本発明の実施例を示す。居室７の空間と空調器
の間は空調ダクトによって接続し、空調ダクトには電子
消音器１がダクト掻音６の対策のために設置されている
。電子消音器１はセ／ｆ−フイクロフオン２、コントロ
ーラ３、音波干渉用スピーカ４から構成される。コント
ローラ３はセンサマイクロフォン２からの情報をもとに
ダクトを伝搬する騒音６と逆位相の付加音を音波干渉用
スピーカ４からの発生させ消音を行なう。消音され、レ
ベルの小さくなったダクト内を伝搬する騒音６は居室７
内に設置された吹出口５等を通り、居室内に伝搬する。[Embodiment] FIG. 1 shows an embodiment of the present invention. The space of the living room 7 and the air conditioner are connected by an air conditioning duct, and an electronic silencer 1 is installed in the air conditioning duct to prevent duct scratching noise 6. The electronic silencer 1 includes a microphone 2, a controller 3, and a speaker 4 for sound wave interference. Based on the information from the sensor microphone 2, the controller 3 causes the sound wave interference speaker 4 to generate an additional sound having an opposite phase to the noise 6 propagating through the duct, thereby muffling the sound. The noise 6 that propagates through the duct, which has been muffled and whose level has been reduced, is in the living room 7.
It propagates into the living room through the air outlet 5 etc. installed inside the room.
この際に騒音と逆位相の付加音発生の音量を自在に変化
させえる機能をコントローラに持たせることにより電子
消音器１の消音性能を調整し、吹出口５から付加音の発
生精度が高い場合の空調騒音８や低い場合の空、調騒音
９を自在に選択する。コントローラ３は居室７内に設置
されている遠隔操作スイッチ１０と結線されておシ、遠
隔操作により電子消音器１の消音性能を調整する。付加
音の発生精度を変化させる具体的な方法はコントローラ
３に内蔵したパワーアンプの増幅レベルを調整するかま
たは音波干渉用スピーカ４から発生させる付加音の位相
特性をずらす二つの方法とこれを同時に行なう方法が考
えられる。At this time, the silencing performance of the electronic silencer 1 can be adjusted by providing the controller with a function that can freely change the volume of the additional sound generated in the opposite phase to the noise, and the additional sound generated from the air outlet 5 can be generated with high accuracy. The air conditioning noise level 8 and the low level air conditioning noise level 9 can be freely selected. The controller 3 is connected to a remote control switch 10 installed in the living room 7, and adjusts the silencing performance of the electronic silencer 1 by remote control. The specific methods for changing the generation accuracy of the additional sound are to adjust the amplification level of the power amplifier built into the controller 3, or to shift the phase characteristics of the additional sound generated from the sound wave interference speaker 4, and to do both at the same time. There are ways to do it.
これにより新たに居室７内にスピーカやオーディオ装置
等を新設することなく居室７内の騒音レベルをコントロ
ールすることが可能になり、室内の音環境を所望なもの
にすることができる。この場合居室７内に伝播する騒音
６はレベルの大小にかかわらず、卓越した周波数特性を
もたないホワイトノイズに近い種類の騒音６となるため
にＢＧＭ（バックグランドミュージック）の場合と異な
り曲の選定等の微妙な問題を考慮する必要がなくなり、
音環境の設定が容易になる。This makes it possible to control the noise level in the living room 7 without newly installing speakers, audio equipment, etc. in the living room 7, and it is possible to create a desired sound environment in the room. In this case, the noise 6 propagating inside the living room 7, regardless of its level, is a type of noise 6 close to white noise that does not have outstanding frequency characteristics. There is no need to consider delicate issues such as selection,
Setting the sound environment becomes easier.
なお、本発明の実施例では１台の電子消音５１に対して
コントローラ３を遠隔操作して付加音の発生音量を変化
させることにより居室７内に伝搬する騒音６のレベルを
変化させる方法について説明したが、電子消音器１を複
数台直列に設置した第３図に示すようなシステムにおい
ては、システム全体のメインコントローラ１３により電
子消音器１の運転を制御し、消音効果をコントロールし
、その結果として居室７内に伝搬する騒音のレベルを変
化させてもかまわない。また、掻音と逆位相の付加音に
加えて、騒音とは無関係なりＧＭに相当する付加音を発
生させ、吹出口から居室内に伝搬させると、より一層音
環境の選択中に融通性をもたせることができる。In the embodiment of the present invention, a method will be described in which the level of the noise 6 propagating into the living room 7 is changed by remotely controlling the controller 3 for one electronic silencer 51 to change the volume of additional sound generated. However, in a system as shown in FIG. 3 in which multiple electronic silencers 1 are installed in series, the main controller 13 of the entire system controls the operation of the electronic silencers 1 to control the silencing effect, and the resulting The level of noise propagating into the living room 7 may be changed as follows. In addition, in addition to the additional sound with the opposite phase to the scratching sound, additional sound that is unrelated to noise and corresponds to GM can be generated and propagated from the air outlet into the living room, providing even more flexibility when selecting the sound environment. It can be made to stand.
雪子消音陣の消音効果を自在に制御し、所望の音環境を
得ることが可能である。It is possible to freely control the silencing effect of the Yukiko silencing group and obtain a desired sound environment.
第１図は本発明の実施例の構成図、第２図は従来の消音
器を示す構成図、第３図は本発明の変形例を示す構成図
である。
ｌ・・・電子消音器、 ２・・・センサマイク
ロフォン。
３・・・コントローラ、 ４・・・音波干渉用スピ
ーカ。
５・・・吹出口、 ６・・・騒 音。
７・・・居 室、 １０・・・遠隔操作スイ
ッチ。
特許出願人 日立プラント建設株式会社第１図
１−・電＋ｉＡ音答 ２・・ 口〉サマイクＯｈノ
３□−コ、ドロー７４−・看截干ｉ参ｍスヒΦ−カ
５−、、吹出口 ６−・ 鳩 者７−−−店 ｔ
１（）−這隔凄作スイ７牟第２図
第３図FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a block diagram of a conventional muffler, and FIG. 3 is a block diagram of a modification of the present invention. l...electronic silencer, 2...sensor microphone. 3...Controller, 4...Speaker for sound wave interference. 5...Air outlet, 6...Noise. 7... Living room, 10... Remote control switch. Patent Applicant Hitachi Plant Construction Co., Ltd. Figure 1 1-・Electric+iA Sound Answer 2・・ Mouth〉Samic Ohノ 3□-ko, Draw 74-・Looking dry i san Suhi Φ-ka
5-,, air outlet 6-, air outlet 7----store t
1 () - 7 months of work, Figure 2, Figure 3
Claims (1)
内で発生させ音波干渉によつて消音を行なう電子消音器
において、前記付加音の発生音量を制御可能な機能をコ
ントローラに付加し、電子消音器の消音効果を自在に制
御し得ることを特徴とする電子消音器。In an electronic silencer that generates additional sound with the opposite phase to the air conditioning noise in the air conditioning duct leading to the living room and mutes the sound by sonic interference, the controller is equipped with a function that can control the volume of the additional sound generated. An electronic muffler characterized in that the muffling effect of the muffler can be freely controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63234859A JPH0285637A (en) | 1988-09-21 | 1988-09-21 | Electronic silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63234859A JPH0285637A (en) | 1988-09-21 | 1988-09-21 | Electronic silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0285637A true JPH0285637A (en) | 1990-03-27 |
Family
ID=16977467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63234859A Pending JPH0285637A (en) | 1988-09-21 | 1988-09-21 | Electronic silencer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0285637A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0544985A (en) * | 1990-12-19 | 1993-02-23 | Gold Star Co Ltd | Method and device for preventing noise of indoor machine of separation indoor air conditioner package |
| JPH0756581A (en) * | 1993-08-09 | 1995-03-03 | Agency Of Ind Science & Technol | Sound transmission loss variable type wall |
| FR2780010A1 (en) * | 1998-06-23 | 1999-12-24 | Peugeot | Audio loudspeaker installation in motor vehicles |
| WO2001018458A1 (en) * | 1999-09-03 | 2001-03-15 | Titon Hardware Limited | Ventilation assemblies |
| JP2015135008A (en) * | 2014-01-17 | 2015-07-27 | 株式会社熊谷組 | Noise masking device |
| DE102019209438A1 (en) * | 2019-06-28 | 2020-12-31 | Audi Ag | System and method for reducing a sound pressure level in a motor vehicle interior and motor vehicle with a corresponding system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6252349A (en) * | 1985-09-02 | 1987-03-07 | Nippon Soken Inc | Active sound deadening device |
-
1988
- 1988-09-21 JP JP63234859A patent/JPH0285637A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6252349A (en) * | 1985-09-02 | 1987-03-07 | Nippon Soken Inc | Active sound deadening device |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0544985A (en) * | 1990-12-19 | 1993-02-23 | Gold Star Co Ltd | Method and device for preventing noise of indoor machine of separation indoor air conditioner package |
| JP2649116B2 (en) * | 1990-12-19 | 1997-09-03 | エルジー電子株式会社 | Noise suppression device for indoor unit in separate type air conditioner package for indoor use |
| JPH0756581A (en) * | 1993-08-09 | 1995-03-03 | Agency Of Ind Science & Technol | Sound transmission loss variable type wall |
| FR2780010A1 (en) * | 1998-06-23 | 1999-12-24 | Peugeot | Audio loudspeaker installation in motor vehicles |
| WO2001018458A1 (en) * | 1999-09-03 | 2001-03-15 | Titon Hardware Limited | Ventilation assemblies |
| US6648750B1 (en) | 1999-09-03 | 2003-11-18 | Titon Hardware Limited | Ventilation assemblies |
| JP2015135008A (en) * | 2014-01-17 | 2015-07-27 | 株式会社熊谷組 | Noise masking device |
| DE102019209438A1 (en) * | 2019-06-28 | 2020-12-31 | Audi Ag | System and method for reducing a sound pressure level in a motor vehicle interior and motor vehicle with a corresponding system |
| DE102019209438B4 (en) | 2019-06-28 | 2022-01-13 | Audi Ag | Motor vehicle with a system for reducing a sound pressure level in a motor vehicle interior and method for reducing the sound pressure level |
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