JP2016530740A - 音場を生成するための方法及び装置 - Google Patents
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- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
- G01S15/06—Systems determining the position data of a target
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- G01S15/32—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
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- G—PHYSICS
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Abstract
Description
−トランスデューサのアレイと相対的な既知の空間的関係を各々が有する複数個の制御点を定めることと、
−各制御点に振幅を割り当てることと、
−制御点の各々における、制御点における特定の位相を持つ割り当てられた振幅を有するモデル化された音場の生成が、他の制御点におけるモデル化された音場の結果として起こる振幅及び位相に与える影響を示す要素を含有する行列を計算することと、
−制御点におけるモデル化された音場の位相及び相対振幅のセットをその固有ベクトルの各々が表す、行列の固有ベクトルを決定することと、
−セットのうちの一つを選択し、制御点における結果生じる音場の位相及び振幅が、選択したセットの位相及び相対振幅に一致するように、トランスデューサの一つ以上に初期振幅及び位相を各々が有する音響波を出力させるようトランスデューサアレイを動作することと、を含む。
−トランスデューサのアレイと相対的な既知の空間的関係を各々が有し、それらに割り当てられた振幅を各々が有する複数個の制御点の各々における、制御点における特定の位相を持つ割り当てられた振幅を有するモデル化された音場の生成が、他の制御点におけるモデル化された音場の結果として起こる振幅及び位相に与える影響を示す要素を含有する行列を計算し、
−セットのうちの一つを選択し、制御点における結果生じる音場の位相及び振幅が選択した制御セットの位相及び相対振幅に一致するように、トランスデューサの一つ以上に初期振幅及び位相を各々が有する音響波を出力させるようトランスデューサアレイを動作できるように、制御点におけるモデル化された音場の位相及び相対振幅のセットをその各々が表す、行列の固有ベクトルを決定するように構成される。
Claims (20)
- 既知の相対位置及び配向を有するトランスデューサのアレイからの音場の生成方法であって、
−前記トランスデューサのアレイと相対的な既知の空間的関係を各々が有する複数個の制御点を定めることと、
−各制御点に振幅を割り当てることと、
−前記制御点の各々における、前記制御点における特定の位相を持つ前記割り当てられた振幅を有するモデル化された音場の生成が、前記他の制御点における前記モデル化された音場の前記結果として起こる振幅及び位相に与える影響を示す要素を含有する行列を計算することと、
−前記制御点における前記モデル化された音場の位相及び相対振幅のセットをその各々が表す、前記行列の固有ベクトルを決定することと、
−前記セットのうちの一つを選択し、前記制御点における前記結果生じる音場の前記位相及び振幅が、前記選択したセットの前記位相及び相対振幅に一致するように、前記トランスデューサの一つ以上に初期振幅及び位相を各々が有する音響波を出力させるよう前記トランスデューサアレイを動作することと、を含む、方法。 - 前記行列の固有値を決定することをさらに含み、前記固有値が、それらのいくつかが相対的に高く、かつそれらのいくつかが相対的に低いスケーリングファクタを表し、前記選択したセットとして、相対的に高い対応する固有値を持つ位相及び相対振幅のセットが選択される、請求項1の方法。
- 前記制御点の一つにおける前記割り当てられた振幅の生成が、前記他の制御点の各々における前記振幅及び位相に与える前記影響が、前記音響波の前記振幅及び位相が減衰及び伝播に起因して空間的にどの程度変化するかを定めるルックアップ関数を使用して計算される、任意の先行する請求項の方法。
- 前記トランスデューサによって出力された前記初期振幅及び位相にエラーを取り込む正則化ステップを含む、任意の先行する請求項の方法。
- 前記正則化法が加重したTikhonov正則化である、請求項4の方法。
- 前記トランスデューサアレイによって出力される電力が、前記初期振幅の最大値を出力する前記トランスデューサが実質的にフルパワーで動作するように、スケールを変える、任意の先行する請求項の方法。
- 前記音響波が0.1Hz〜500Hzの周波数に調節される、任意の先行する請求項の方法。
- 前記音響波が超音波である、任意の先行する請求項の方法。
- 前記制御点が、前記音場が相対的に高い振幅を有する第一のグループの制御点と、前記第一のグループの制御点における前記音場の前記振幅と比較して前記音場が相対的に低い振幅を有する第二のグループの制御点と、を備えており、前記音場の振幅における勾配が生成されるように、前記第二のグループにおける制御点が前記第一のグループの制御点に隣接する、任意の先行する請求項の方法。
- 低振幅制御点のグループにオブジェクトを保持できるポケットを画定するように、一つ以上の低振幅制御点のグループを高振幅制御点によってサポートすることができる、請求項10の方法。
- 前記制御点の少なくともいくつかの位置が、前記音場が存在し得る容積内の仮想三次元形状の一部を画定するように選出される、任意の先行する請求項の方法。
- 前記制御点が、オブジェクトが前記仮想形状に交わる地点の前記領域内に位置付けられる、請求項11の方法。
- 既知の相対位置及び配向を有するトランスデューサのアレイ、及びデータプロセッサを備えた、音場を生成するための装置であって、前記データプロセッサが、
−前記トランスデューサのアレイと相対的な既知の空間的関係を各々が有し、それらに割り当てられた振幅を各々が有する複数個の制御点の各々における、前記制御点における特定の位相を持つ前記割り当てられた振幅を有するモデル化された音場の生成が、前記他の制御点における前記モデル化された音場の前記結果として起こる振幅及び位相に与える影響を示す要素を含有する行列を計算し、
−前記制御点における前記モデル化された音場の位相及び相対振幅のセットをその各々の固有ベクトルが表す、前記行列の固有ベクトルを決定するように設定された、装置。 - 前記データプロセッサが、前記制御点における前記結果生じる音場の前記位相及び振幅が固有ベクトルセットの前記位相及び相対振幅に一致するように、前記トランスデューサの一つ以上に初期振幅及び位相を各々が有する音響波を出力させるように設定された、請求項13に記載の装置。
- 前記行列の固有値を決定するように追加的に設計されており、前記固有値が、それらのいくつかが相対的に高く、かつそれらのいくつかが相対的に低いスケーリングファクタを表し、選択したセットとして、相対的に高い対応する固有値を持つ位相及び相対振幅のセットが選択された、請求項13または14に記載の装置。
- 前記データプロセッサが、前記トランスデューサによって出力された初期振幅及び位相にエラーを取り込む正則化ステップを実行するように追加的に設計された、請求項13〜15のいずれか一項に記載の装置。
- 前記正則化法が加重したTikhonov正則化である、請求項16に記載の装置。
- 0.1Hz〜500Hzの周波数に前記音響波を調節するように設計された、請求項13〜17のいずれか一項に記載の装置。
- オブジェクト追跡をさらに備えており、前記オブジェクト追跡によって記録されたデータに基づいて、前記制御点の位置を選出するように設定された、請求項13〜18のいずれか一項に記載の装置。
- 請求項1の前記方法を実行するように設定された、データプロセッサ。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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GB1308274.8A GB2513884B (en) | 2013-05-08 | 2013-05-08 | Method and apparatus for producing an acoustic field |
GB1308274.8 | 2013-05-08 | ||
PCT/GB2014/051319 WO2014181084A1 (en) | 2013-05-08 | 2014-04-29 | Method and apparatus for producing an acoustic field |
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JP2016530740A true JP2016530740A (ja) | 2016-09-29 |
JP6452257B2 JP6452257B2 (ja) | 2019-01-16 |
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US (5) | US9977120B2 (ja) |
EP (1) | EP2995096B1 (ja) |
JP (1) | JP6452257B2 (ja) |
KR (1) | KR102162329B1 (ja) |
CN (1) | CN105210390B (ja) |
AU (1) | AU2014264397B2 (ja) |
CA (1) | CA2909804C (ja) |
GB (1) | GB2513884B (ja) |
HK (1) | HK1218361A1 (ja) |
SG (1) | SG11201508660YA (ja) |
WO (1) | WO2014181084A1 (ja) |
ZA (1) | ZA201508936B (ja) |
Cited By (3)
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KR20190096369A (ko) * | 2016-12-13 | 2019-08-19 | 울트라햅틱스 아이피 엘티디 | 위상 어레이 시스템들을 위한 구동 기법들 |
JP2019525344A (ja) * | 2016-08-03 | 2019-09-05 | ウルトラハプティクス アイピー リミテッドUltrahaptics Ip Ltd | 触覚システムにおける三次元知覚 |
US11048329B1 (en) | 2017-07-27 | 2021-06-29 | Emerge Now Inc. | Mid-air ultrasonic haptic interface for immersive computing environments |
Families Citing this family (58)
Publication number | Priority date | Publication date | Assignee | Title |
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GB2513884B (en) | 2013-05-08 | 2015-06-17 | Univ Bristol | Method and apparatus for producing an acoustic field |
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AU2014264397B2 (en) | 2018-02-15 |
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US20230228857A1 (en) | 2023-07-20 |
US9977120B2 (en) | 2018-05-22 |
SG11201508660YA (en) | 2015-11-27 |
US11543507B2 (en) | 2023-01-03 |
US20230088166A1 (en) | 2023-03-23 |
KR102162329B1 (ko) | 2020-10-06 |
AU2014264397A1 (en) | 2015-11-12 |
GB201308274D0 (en) | 2013-06-12 |
CA2909804C (en) | 2020-10-27 |
EP2995096A1 (en) | 2016-03-16 |
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