JP7072900B2 - 音響及び振動の能動的制御 - Google Patents
音響及び振動の能動的制御 Download PDFInfo
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- 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
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- 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
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- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
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- 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
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Description
・入力オーディオ信号sを再生するべく、音響及び振動生成構成の動作によって生成される音響及び振動、
・音響及び/又は振動の外部ソースに起因して詰め物の内部において誘発される周辺音響及び振動、
という成分のうちの一方又は両方を含むことができる。
・第1利得g1による第1フィードバック信号f1の乗算に加えて、第1フィードバック信号f1は、第1キャンセル信号として使用される前に、第1補償フィルタH1によっても処理されており、且つ、
・第2利得g2による第2フィードバック信号f2の乗算に加えて、第2フィードバック信号f2は、第2キャンセル信号として使用される前に、第2補償フィルタH2によっても処理されている、
という例外を伴っている。
Claims (10)
- 音響及び振動の能動的なキャンセルのための装置であって、
その入力として提供された駆動信号(d)の制御下において振動及び音響を協働して生成する詰め物(170)並びに音響及び振動生成手段(110)であって、前記音響及び振動生成手段(110)は、前記詰め物(170)の少なくとも1つの外側表面(172)上において振動及び音響として知覚可能である機械的振動を生成するべく、且つ、前記詰め物(170)の前記少なくとも1つの外側表面(172)を通じて音響を放射するべく、前記詰め物(170)の内部に配置されている、詰め物(170)並びに音響及び振動生成手段と、
前記詰め物(170)の内部の音響及び振動の音響エネルギーについて通知するフィードバック情報(f)を提供するフィードバック手段(130)と、
音響及び振動の1つ又は複数の外部ソースに起因して前記詰め物(170)の内部において誘発される周辺音響及び振動のエネルギーを低減するように、前記フィードバック情報(f)に依存した状態において前記駆動信号(d)を生成する駆動手段(150)と、
を有する装置において、
前記フィードバック手段(130)は、
前記詰め物(170)内の音響運動エネルギーについて記述する第1フィードバック信号(f1)を提供するように構成された第1センサと、
前記詰め物(170)内の音響ポテンシャルエネルギーについて記述する第2フィードバック信号(f2)を提供するように構成された第2センサと、
を有し、且つ、
前記フィードバック情報(f)は、前記第1及び第2フィードバック信号(f1、f2)を有する、ことを特徴とする装置。 - 前記第1センサは、前記詰め物(170)内の運動の速度について記述する前記第1フィードバック信号(f1)を提供するように構成された加速度計(132)を有し、且つ、
第2センサは、前記詰め物(170)内の音圧について記述する前記第2フィードバック信号(f2)を提供するように構成された圧力センサ(134)を有する請求項1に記載の装置。 - 前記駆動手段(150)は、
前記第1フィードバック信号(f1)を第1適合可能利得値(g1)によって乗算することにより、第1キャンセル信号を導出し、
前記第2フィードバック信号(f2)を第2適合可能利得値(g2)によって乗算することによって第2キャンセル信号を導出し、且つ、
前記第1及び第2キャンセル信号の組合せを含む信号として前記駆動信号(d)を生成する、
ように構成されている請求項1又は2に記載の装置。 - 前記駆動手段(150)は、前記第1及び第2キャンセル信号の合計として前記駆動信号(d)を生成するように構成されている請求項3に記載の装置。
- 前記駆動手段(150)は、
前記音響及び振動生成手段(110)による再生のために入力オーディオ信号(s)を受け取り、且つ、
前記入力オーディオ信号(s)、前記第1キャンセル信号、及び前記第2キャンセル信号の合計として前記駆動信号(d)を生成する、
ように構成されている請求項3に記載の装置。 - 前記駆動信号(d)のエネルギーが極小化され、これにより、前記詰め物(170)の内部において誘発される前記周辺音響及び振動の運動エネルギー及びポテンシャルエネルギーの両方を低減するように、前記第1及び第2適合可能利得(g1、g2)の個々の値を導出することと、
前記第1適合可能利得(g1)の前記値をゼロに設定し、且つ、前記駆動信号(d)の前記エネルギーが極小化され、これにより、前記詰め物(170)の内部において誘発される前記周辺音響及び振動のポテンシャルエネルギーを低減するように、前記第2適合可能利得(g2)の前記値を導出することと、
前記第2適合可能利得(g2)の前記値をゼロに設定し、且つ、前記駆動信号(d)の前記エネルギーが極小化され、これにより、前記詰め物(170)の内部において誘発される前記周辺音響及び振動の運動エネルギーを低減するように、前記第1適合可能利得(g1)の前記値を導出することと、
のうちの1つを実行するように構成された適合化手段(152)を更に有する請求項3乃至5のいずれか1項に記載の装置。 - 前記駆動手段(150)は、
前記駆動信号(d)から前記第1フィードバック信号(f1)への第1伝達関数の逆数をモデル化するように構成された第1補償フィルタ(H1)によって前記第1フィードバック信号(f1)を処理し、且つ、
前記駆動信号(d)から前記第2フィードバック信号(f2)への第2伝達関数の逆数をモデル化するように構成された第2補償フィルタ(H2)によって前記第2フィードバック信号を処理する、
ように構成されている請求項3乃至5のいずれか1項に記載の装置。 - 前記第1及び第2伝達関数を判定するべくフィルタ較正手順を実行するように構成された適合化手段(152)を更に有し、
前記フィルタ較正手順は、
対応する第1及び第2フィードバック信号(f1、f2)を生成するべく、前記音響及び振動生成手段(110)に対する入力として、予め定義された較正信号を前記駆動信号(d)として提供するステップと、
個々に第1及び第2伝達関数を推定するフィルタ係数の第1及び第2の組を導出するステップと、
を有する請求項7に記載の装置。 - 前記較正信号は、
予め定義されたスペクトル特性、
予め定義された信号レベル、
のうちの1つ又は複数を有するノイズ信号である請求項8に記載の装置。 - 前記適合化手段(152)は、前記フィードバック情報(f)が、予め定義された閾値未満である周辺音響及び振動のエネルギーを通知している状態において、前記フィルタ較正手順を実行するように構成されている請求項8又は9に記載の装置。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP17151742.8A EP3349211B1 (en) | 2017-01-17 | 2017-01-17 | Active control of sound and vibration |
EP17151742.8 | 2017-01-17 | ||
PCT/EP2018/050814 WO2018134142A1 (en) | 2017-01-17 | 2018-01-15 | Active control of sound and vibration |
Publications (2)
Publication Number | Publication Date |
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JP2020504337A JP2020504337A (ja) | 2020-02-06 |
JP7072900B2 true JP7072900B2 (ja) | 2022-05-23 |
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JP2019538428A Active JP7072900B2 (ja) | 2017-01-17 | 2018-01-15 | 音響及び振動の能動的制御 |
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Country | Link |
---|---|
US (1) | US10679601B2 (ja) |
EP (1) | EP3349211B1 (ja) |
JP (1) | JP7072900B2 (ja) |
KR (1) | KR102481285B1 (ja) |
CN (1) | CN110199347B (ja) |
WO (1) | WO2018134142A1 (ja) |
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US11689856B2 (en) | 2015-11-19 | 2023-06-27 | The Lovesac Company | Electronic furniture systems with integrated induction charger |
US11832039B2 (en) | 2021-04-12 | 2023-11-28 | The Lovesac Company | Tuning calibration technology for systems and methods for acoustically correcting sound loss through fabric |
US10212519B2 (en) | 2015-11-19 | 2019-02-19 | The Lovesac Company | Electronic furniture systems with integrated internal speakers |
US11711650B2 (en) * | 2020-07-14 | 2023-07-25 | ANI Technologies Private Limited | Troubleshooting of audio system |
KR102689362B1 (ko) * | 2020-12-30 | 2024-07-29 | 충남대학교 산학협력단 | 위치추적을 이용한 가변 정음영역의 능동소음제어 방법 및 장치 |
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EP3349211B1 (en) | 2020-03-11 |
JP2020504337A (ja) | 2020-02-06 |
EP3349211A1 (en) | 2018-07-18 |
CN110199347A (zh) | 2019-09-03 |
KR20190108107A (ko) | 2019-09-23 |
US10679601B2 (en) | 2020-06-09 |
KR102481285B1 (ko) | 2022-12-26 |
CN110199347B (zh) | 2023-05-05 |
US20190362702A1 (en) | 2019-11-28 |
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