JP2007171487A5 - - Google Patents

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JP2007171487A5
JP2007171487A5 JP2005368139A JP2005368139A JP2007171487A5 JP 2007171487 A5 JP2007171487 A5 JP 2007171487A5 JP 2005368139 A JP2005368139 A JP 2005368139A JP 2005368139 A JP2005368139 A JP 2005368139A JP 2007171487 A5 JP2007171487 A5 JP 2007171487A5
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sound
frequency
generated
driving
drive
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JP2005368139A
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JP4724553B2 (en
JP2007171487A (en
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Claims (13)

負荷を駆動する駆動手段を有する駆動装置と接続され、該駆動手段から発生する音のレベルを低減させる消音装置において、
前記駆動手段の動作状態を前記駆動装置から受信する受信手段と、
前記駆動手段の動作時に発生する音の周波数情報を記憶する記憶手段と、
外部の音を収録する音収録手段と、
外部へ音を発生する音発生手段と、
前記受信手段により受信された前記動作状態と前記記憶手段に記憶された前記周波数情報に基づいて、前記駆動装置から発生する音を打ち消すための音声信号を生成し、該生成された音声信号に基づいて前記音発生手段により音を発生させる制御手段と、
を有することを特徴とする消音装置。 In a silencer that is connected to a drive device having a drive means for driving a load and reduces the level of sound generated from the drive means,
Receiving means for receiving an operating state of the driving means from the driving device;
Storage means for storing frequency information of sound generated during operation of the driving means;
Sound recording means for recording external sounds,
Sound generation means for generating sound to the outside;
Based on the operating state received by the receiving unit and the frequency information stored in the storage unit, an audio signal for canceling the sound generated from the driving device is generated, and based on the generated audio signal Control means for generating sound by the sound generating means;
A muffler characterized by comprising: 前記制御手段は、前記受信手段により受信された前記動作状態に基づいて動作している駆動手段を特定し、該特定された駆動手段に対応する周波数を前記記憶手段から取得し、前記音収録手段により収録された音から前記記憶手段から取得された周波数の音を抽出し、該抽出された音に対して逆位相の音声信号を生成し、該生成された音声信号に基づいて前記音発生手段により音を発生させることを特徴とする請求項１記載の消音装置。   The control means specifies a driving means that is operating based on the operation state received by the receiving means, acquires a frequency corresponding to the specified driving means from the storage means, and the sound recording means The sound having the frequency acquired from the storage means is extracted from the sound recorded by the above-mentioned sound, an audio signal having an antiphase with respect to the extracted sound is generated, and the sound generating means is based on the generated audio signal. The muffler according to claim 1, wherein a sound is generated by the operation. 前記駆動装置は、シートに画像を形成する画像形成装置であることを特徴とする請求項１記載の消音装置。   The silencer according to claim 1, wherein the driving device is an image forming device that forms an image on a sheet. 前記駆動手段は、ギアを回転させるパルスモータであり、
前記受信手段により受信される動作状態は、前記パルスモータの起動・停止を示す情報であり、
前記記憶手段に記憶される周波数は、前記パルスモータの回転周波数及び前記ギアの噛み合い音に対応した周波数の情報であることを特徴とする請求項３記載の消音装置。 The drive means is a pulse motor that rotates a gear,
The operating state received by the receiving means is information indicating start / stop of the pulse motor,
4. The silencer according to claim 3, wherein the frequency stored in the storage means is information of a frequency corresponding to a rotation frequency of the pulse motor and a meshing sound of the gear. 前記駆動手段は、ファンを回転させるファンモータであり、
前記受信手段により受信される動作状態は、前記ファンモータの起動・停止を示す情報であり、
前記記憶手段に記憶される周波数は、前記ファンモータの回転周波数及び前記ファンモータの回転周波数に前記ファンの羽の枚数を掛け合わせた周波数の情報であることを特徴とする請求項３記載の消音装置。 The drive means is a fan motor that rotates a fan,
The operating state received by the receiving means is information indicating start / stop of the fan motor,
4. The muffler according to claim 3, wherein the frequency stored in the storage means is information about a rotation frequency of the fan motor and a frequency obtained by multiplying the rotation frequency of the fan motor by the number of fan blades. apparatus. 前記駆動手段は、ポリゴンミラーを回転させるポリゴンモータであり、
前記受信手段により受信される動作状態は、前記ポリゴンモータの起動・停止を示す情報であり、
前記記憶手段に記憶される周波数は、前記ポリゴンモータの回転周波数及び前記ポリゴンモータの回転周波数に前記ポリゴンミラー面数を掛け合わせた周波数の情報であることを特徴とする請求項３記載の消音装置。 The driving means is a polygon motor that rotates a polygon mirror,
The operating state received by the receiving means is information indicating start / stop of the polygon motor,
4. The muffler according to claim 3, wherein the frequency stored in the storage means is information about a rotation frequency of the polygon motor and a frequency obtained by multiplying the rotation frequency of the polygon motor by the number of polygon mirror surfaces. . 前記記憶手段から取得された周波数に対して前記音収録手段により収録された音声信号の周波数のピークがずれている場合、ずれた位置がピークとなる周波数に対して前記制御手段による音声信号の生成行うことを特徴とする請求項１記載の消音装置。   When the frequency peak of the audio signal recorded by the sound recording unit is shifted from the frequency acquired from the storage unit, the audio signal is generated by the control unit for the frequency at which the shifted position is a peak. The muffler according to claim 1, wherein the muffler is performed. 前記音発生手段は、ライン状スピーカであることを特徴とする請求項１記載の消音装置。   2. The muffler according to claim 1, wherein the sound generating means is a line speaker. 前記駆動装置内に前記駆動手段が複数存在し、該複数の駆動手段のうち、一部の駆動手段に限定して動作状態が前記受信手段により受信されることを特徴とする請求項１記載の消音装置。   2. The drive unit according to claim 1, wherein a plurality of the drive units are present in the drive unit, and the operation state is received by the reception unit limited to a part of the plurality of drive units. Silencer. 前記駆動装置から発生する音の伝達を遮断する壁面を有することを特徴とする請求項１記載の消音装置。   The silencer according to claim 1, further comprising a wall that blocks transmission of sound generated from the drive device. 前記受信手段により受信される前記駆動手段の動作状態が予め定められた時間以下で変化する場合には、前記制御手段による音声信号の作成を行わないことを特徴とする請求項１記載の消音装置。   2. The silencer according to claim 1, wherein when the operating state of the driving means received by the receiving means changes within a predetermined time or less, no sound signal is created by the control means. . 前記記憶手段に記憶された周波数情報は、前記駆動装置から受信した情報であることを特徴とする請求項１記載の消音装置。   2. The muffler according to claim 1, wherein the frequency information stored in the storage means is information received from the drive device. 負荷を駆動する駆動手段を有する駆動装置と、該駆動装置から発生する音のレベルを低減させる消音装置とからなる消音システムにおいて、
前記駆動手段の動作状態を前記駆動装置から受信する受信手段と、
前記駆動手段の動作時に発生する音の周波数情報を記憶する記憶手段と、
外部の音を収録する音収録手段と、
外部へ音を発生する音発生手段と、
前記受信手段により受信された前記動作状態と前記記憶手段に記憶された前記周波数情報に基づいて、前記駆動装置から発生する音を打ち消すための音声信号を生成し、該生成された音声信号に基づいて前記音発生手段により音を発生させる制御手段と、
を有することを特徴とする消音システム。 In a silencing system comprising a driving device having driving means for driving a load and a silencing device for reducing the level of sound generated from the driving device,
Receiving means for receiving an operating state of the driving means from the driving device;
Storage means for storing frequency information of sound generated during operation of the driving means;
Sound recording means for recording external sounds,
Sound generation means for generating sound to the outside;
Based on the operating state received by the receiving unit and the frequency information stored in the storage unit, an audio signal for canceling the sound generated from the driving device is generated, and based on the generated audio signal Control means for generating sound by the sound generating means;
A muffler system characterized by comprising:
JP2005368139A 2005-12-21 2005-12-21 Silencer and silencer system Expired - Fee Related JP4724553B2 (en)

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JP2005368139A JP4724553B2 (en) 2005-12-21 2005-12-21 Silencer and silencer system

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Application Number Priority Date Filing Date Title
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Publications (3)

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JP2007171487A JP2007171487A (en) 2007-07-05
JP2007171487A5 true JP2007171487A5 (en) 2008-02-28
JP4724553B2 JP4724553B2 (en) 2011-07-13

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010107884A (en) * 2008-10-31 2010-05-13 Yamaha Corp Unit for forming virtual noise barrier and microphone speaker unit
JP2011227219A (en) * 2010-04-19 2011-11-10 Buffalo Inc Information system, program for cancelling operation sound and a method for cancelling operation sound
JP4992998B2 (en) * 2010-06-22 2012-08-08 コニカミノルタビジネステクノロジーズ株式会社 Image forming apparatus, noise prevention method and noise prevention program for the same
CN109625260B (en) 2017-10-06 2023-06-30 松下电器（美国）知识产权公司 Unmanned aerial vehicle
JP7094779B2 (en) * 2017-10-06 2022-07-04 パナソニック インテレクチュアル プロパティ コーポレーション オブ アメリカ Control device, control system and control method

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0612083A (en) * 1991-11-26 1994-01-21 Aisin Seiki Co Ltd Noise reduction device
JP3537150B2 (en) * 1992-05-06 2004-06-14 富士通テン株式会社 Noise control device
JP3039342B2 (en) * 1995-11-13 2000-05-08 富士ゼロックス株式会社 Silencer and muffling method for image forming apparatus
JP2003216163A (en) * 2002-01-21 2003-07-30 Denso Corp Noise controller
JP2004219783A (en) * 2003-01-16 2004-08-05 Konica Minolta Holdings Inc Image forming device
JP2005025109A (en) * 2003-07-03 2005-01-27 Sony Corp Sound eliminator
JP4273926B2 (en) * 2003-10-29 2009-06-03 株式会社日立製作所 Silencer and projector using the same

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