JP2010140044A - Noise canceling device - Google Patents
Noise canceling device Download PDFInfo
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- JP2010140044A JP2010140044A JP2010012632A JP2010012632A JP2010140044A JP 2010140044 A JP2010140044 A JP 2010140044A JP 2010012632 A JP2010012632 A JP 2010012632A JP 2010012632 A JP2010012632 A JP 2010012632A JP 2010140044 A JP2010140044 A JP 2010140044A
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Abstract
Description
本発明は、例えば、エアコンの室外機のような一定の場所に設置される装置の発する騒音を低減させるノイズキャンセリング装置に関する。 The present invention relates to a noise canceling device that reduces noise generated by a device installed in a certain place such as an outdoor unit of an air conditioner.
従来、特許文献１乃至特許文献３に記載されているように、マイクロホンで集音した騒音信号の逆位相の信号をスピーカに供給し、騒音と逆位相の音を発して騒音を低減するノイズキャンセリング装置が提案されている。 Conventionally, as described in Patent Documents 1 to 3, a noise canceler that supplies a signal having a phase opposite to that of a noise signal collected by a microphone to a speaker and emits a sound having a phase opposite to that of the noise to reduce the noise. A ring device has been proposed.
このノイズキャンセリング装置においては、マイクロホンの出力信号が位相反転され、バンドパスフィルタ及びミキシング回路を経て、アンプを介してスピーカに供給される。スピーカからは、騒音と逆位相の音波が放射され、スピーカの音波とマイクロホンの位置での騒音とが打ち消しあうようになっている。 In this noise canceling apparatus, the output signal of the microphone is phase-inverted and supplied to a speaker via an amplifier via a bandpass filter and a mixing circuit. A sound wave having a phase opposite to that of the noise is emitted from the speaker, and the sound wave of the speaker and the noise at the position of the microphone cancel each other.
ところで、従来のノイズキャンセリング装置は、この装置の使用者の周囲の騒音を検出し、この騒音を低減するようになっている。そのため、ノイズキャンセリング装置を使用している人にとっては騒音が低減されるが、その他の人にとっては騒音は低減されない。 By the way, the conventional noise canceling apparatus detects the noise around the user of the apparatus and reduces the noise. Therefore, noise is reduced for a person using the noise canceling device, but noise is not reduced for other persons.
ところが、例えば、エアコンの室外機などのように、一定の場所に設置される装置から発せられる騒音は、ノイズキャンセリング装置を使用している人に限らず、この場所に近づくいずれの人にとっても騒音であるので、誰にとっても騒音が低減されることが好ましい。 However, for example, the noise emitted from a device installed in a certain place, such as an outdoor unit of an air conditioner, is not limited to a person using a noise canceling device, but for any person approaching this place. Since it is noise, it is preferable for everyone to reduce the noise.
そこで、本発明は、一定の場所に設置される装置から発せられる騒音を、その場所に近づくいずれの人にとっても低減されるようにするノイズキャンセリング装置を提供することを目的とする。 SUMMARY OF THE INVENTION An object of the present invention is to provide a noise canceling device that reduces noise generated from a device installed at a certain place for any person approaching the place.
前述の課題を解決するため、本発明に係るノイズキャンセリング装置は、以下の構成を有するものである。 In order to solve the above-described problem, a noise canceling apparatus according to the present invention has the following configuration.
〔構成１〕
一定の場所に設置される対象装置の近傍に設置されこの対象装置が発する騒音を集音するマイクロホン装置と、マイクロホン装置により集音された騒音信号が送られこの騒音信号の位相を反転させる位相反転回路と、位相反転回路により位相が反転された逆位相信号が送られこの逆位相信号を増幅する増幅回路と、対象装置の近傍に設置され増幅回路により増幅された信号が送られ騒音に対して逆位相の音波を発するスピーカ装置とを備えたことを特徴とするものである。
[Configuration 1]
A microphone device that is installed in the vicinity of a target device installed at a certain location and collects noise generated by the target device; The circuit, an anti-phase signal whose phase is inverted by the phase inversion circuit is sent and an amplification circuit that amplifies the anti-phase signal, and a signal that is installed near the target device and amplified by the amplification circuit is sent to the noise And a speaker device that emits sound waves of opposite phase.
構成１を有する本発明に係るノイズキャンセリング装置においては、対象装置が発する騒音を集音するマイクロホン装置及び騒音に対して逆位相の音波を発するスピーカ装置は、対象装置の近傍に設置されるので、対象装置の設置場所に近づくいずれの人にとっても、対象装置が発する騒音が低減される。 In the noise canceling device according to the present invention having the configuration 1, the microphone device that collects the noise emitted by the target device and the speaker device that emits a sound wave having an opposite phase to the noise are installed in the vicinity of the target device. For any person approaching the installation location of the target device, noise generated by the target device is reduced.
すなわち、本発明は、一定の場所に設置される装置から発せられる騒音を、その場所に近づくいずれの人にとっても低減されるようにするノイズキャンセリング装置を提供することができるものである。 That is, the present invention can provide a noise canceling device that can reduce noise emitted from a device installed in a certain place for any person approaching the place.
以下、本発明を実施するための形態について、図面を参照して詳細に説明する。 Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings.
図１は、本発明に係るノイズキャンセリング装置の構成を示す斜視図である。 FIG. 1 is a perspective view showing a configuration of a noise canceling apparatus according to the present invention.
本発明に係るノイズキャンセリング装置は、図１に示すように、一定の場所に設置される、例えば、エアコンの室外機のような対象装置１０１の近傍に設置されるマイクロホン装置１を有している。このマイクロホン装置１は、対象装置１０１が発する騒音を集音する。 As shown in FIG. 1, the noise canceling device according to the present invention includes a microphone device 1 installed in a certain place, for example, in the vicinity of a target device 101 such as an outdoor unit of an air conditioner. Yes. The microphone device 1 collects noise generated by the target device 101.
マイクロホン装置１により集音された騒音信号は、逆位相音源２に送られる。逆位相音源２は、送られた騒音信号の位相を反転させる位相反転回路を内蔵し、また、増幅回路を内蔵して構成されている。増幅回路は、位相反転回路により位相が反転された逆位相信号が送られ、この逆位相信号を増幅して出力する。 The noise signal collected by the microphone device 1 is sent to the antiphase sound source 2. The anti-phase sound source 2 includes a phase inverting circuit that inverts the phase of the transmitted noise signal, and also includes an amplifier circuit. The amplifying circuit receives an anti-phase signal whose phase is inverted by the phase inverting circuit, and amplifies and outputs the anti-phase signal.
増幅回路により増幅された信号は、スピーカ装置３に送られる。スピーカ装置３は、対象装置１０１の近傍に設置されている。 The signal amplified by the amplifier circuit is sent to the speaker device 3. The speaker device 3 is installed in the vicinity of the target device 101.
図２は、本発明に係るノイズキャンセリング装置の動作を示すグラフである。 FIG. 2 is a graph showing the operation of the noise canceling apparatus according to the present invention.
スピーカ装置３は、増幅回路より送られた信号に基づいて、図２に示すように、対象装置１０１の発する騒音に対して逆位相の音波を発する。この逆位相の音波は、対象装置１０１の発する騒音を打ち消して、騒音を低減する。 As shown in FIG. 2, the speaker device 3 emits a sound wave having a phase opposite to that of the target device 101 based on the signal sent from the amplifier circuit. The sound wave having the opposite phase cancels the noise generated by the target device 101 and reduces the noise.
このノイズキャンセリング装置においては、対象装置１０１が発する騒音を集音するマイクロホン装置１及び騒音に対して逆位相の音波を発するスピーカ装置３が、いずれも対象装置１０１の近傍に設置されるので、対象装置１０１の設置場所に近づくいずれの人にとっても、対象装置１０１が発する騒音が低減される。 In this noise canceling device, both the microphone device 1 that collects the noise emitted by the target device 101 and the speaker device 3 that emits a sound wave having an opposite phase to the noise are installed in the vicinity of the target device 101. For any person approaching the installation location of the target device 101, noise generated by the target device 101 is reduced.
本発明は、例えば、エアコンの室外機のような一定の場所に設置される装置の発する騒音を低減させるノイズキャンセリング装置に適用される。 The present invention is applied to, for example, a noise canceling device that reduces noise generated by a device installed in a certain place such as an outdoor unit of an air conditioner.
１ マイクロホン装置
２ 逆位相音源
３ スピーカ装置
１０１ 対象装置
DESCRIPTION OF SYMBOLS 1 Microphone apparatus 2 Antiphase sound source 3 Speaker apparatus 101 Target apparatus
Claims (1)
前記マイクロホン装置により集音された騒音信号が送られ、この騒音信号の位相を反転させる位相反転回路と、
前記位相反転回路により位相が反転された逆位相信号が送られ、この逆位相信号を増幅する増幅回路と、
前記対象装置の近傍に設置され、前記増幅回路により増幅された信号が送られ、前記騒音に対して逆位相の音波を発するスピーカ装置と
を備えたことを特徴とするノイズキャンセリング装置。 A microphone device that is installed in the vicinity of a target device installed in a certain place and collects noise generated by the target device; and
A noise signal collected by the microphone device is sent, and a phase inversion circuit for inverting the phase of the noise signal;
An anti-phase signal whose phase is inverted by the phase inversion circuit is sent, and an amplification circuit that amplifies the anti-phase signal;
A noise canceling device, comprising: a speaker device installed in the vicinity of the target device, to which a signal amplified by the amplifier circuit is transmitted and which emits a sound wave having an opposite phase to the noise.
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|---|---|---|---|
| JP2010012632A JP2010140044A (en) | 2010-01-22 | 2010-01-22 | Noise canceling device |
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|---|---|---|---|
| JP2010012632A JP2010140044A (en) | 2010-01-22 | 2010-01-22 | Noise canceling device |
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| JP2010140044A true JP2010140044A (en) | 2010-06-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021174780A1 (en) * | 2020-03-03 | 2021-09-10 | 青岛海尔空调器有限总公司 | Active noise reduction air conditioner and control method therefor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01270489A (en) * | 1988-04-22 | 1989-10-27 | Mitsubishi Heavy Ind Ltd | Space voice erasing device |
| JPH02114839A (en) * | 1988-10-25 | 1990-04-26 | Shinko Electric Co Ltd | End ring fixing device for brake winding of synchronous machine |
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2010
- 2010-01-22 JP JP2010012632A patent/JP2010140044A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01270489A (en) * | 1988-04-22 | 1989-10-27 | Mitsubishi Heavy Ind Ltd | Space voice erasing device |
| JPH02114839A (en) * | 1988-10-25 | 1990-04-26 | Shinko Electric Co Ltd | End ring fixing device for brake winding of synchronous machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021174780A1 (en) * | 2020-03-03 | 2021-09-10 | 青岛海尔空调器有限总公司 | Active noise reduction air conditioner and control method therefor |
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