JP7179753B2 - スピーチプライバシーシステム及び/又は関連する方法 - Google Patents
スピーチプライバシーシステム及び/又は関連する方法 Download PDFInfo
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Description
Claims (22)
- スピーチ明瞭度を阻害するための方法であって、
マイクロホンを介して、元のスピーチに対応する元のスピーチ信号を受信することと、
前記元のスピーチ信号を、フィルタであって、前記フィルタからの出力が、前記元のスピーチが対象の領域内の人間への阻害を引き起こす可能性が高くなるほど前記元のスピーチ信号内に子音が存在するかどうかを示す、フィルタ、に供することと、
前記フィルタからの出力が、前記元のスピーチが前記対象の領域内の人間への阻害を引き起こす可能性が高くなるほど前記元のスピーチ信号内に子音が存在することを示すことを条件として、
前記元のスピーチ信号から、明瞭度阻害マスキング信号であって、(a)前記元のスピーチ信号に対する時間遅延、(b)発振周波数に従って変化する前記時間遅延、及び(c)変調される振幅を有するように生成されることにより前記元のスピーチ信号とは異なる、明瞭度阻害マスキング信号、を生成することと、
前記明瞭度阻害マスキング信号をスピーカを通じて出力させて、前記元のスピーチ信号の明瞭度のレベルを低減させることと、
前記元のスピーチが前記対象の領域内の人間への阻害を引き起こす可能性がもはや高くないことを示す前記フィルタからの出力に応答して、前記明瞭度阻害マスキング信号の生成を中止することと、を含む、方法。 - 前記時間遅延が少なくとも80msである、請求項1に記載の方法。
- 前記発振周波数が、2~6Hzの速度で前記時間遅延を調整する、請求項1又は2に記載の方法。
- 前記フィルタからの出力が、前記元のスピーチ信号が閾値を上回る周波数を含むと前記フィルタが判定したことに応答して、前記元のスピーチが対象の領域内の人間への阻害を引き起こす可能性が高くなるほど前記元のスピーチ信号内に子音が存在することを示す、請求項1~3のいずれか一項に記載の方法。
- 前記閾値が1.2kHzである、請求項4に記載の方法。
- 前記明瞭度阻害マスキング信号の振幅が、前記元のスピーチ信号の振幅の10~100%から発振する、請求項1~5のいずれか一項に記載の方法。
- 前記明瞭度阻害マスキング信号の振幅が、前記元のスピーチ信号の振幅の40~90%から発振する、請求項1~6のいずれか一項に記載の方法。
- 前記スピーカを通して、予め録音した複数の声の混合物と一緒に、前記明瞭度阻害マスキング信号を出力することを更に含む、請求項1~7のいずれか一項に記載の方法。
- 前記予め録音した複数の声の混合物が、2つ~7つの異なる声を含む、請求項8に記載の方法。
- 前記明瞭度阻害マスキング信号は、前記元のスピーチ信号に加えられる前記明瞭度阻害マスキング信号に対応する利得が0.05~0.25%であるように生成される、請求項1~9のいずれか一項に記載の方法。
- 前記明瞭度阻害マスキング信号が、初期レベルのラウドネスを維持又は実質的に維持しながら、前記対象の領域内の予め測定された領域固有の残響モードをさもなければトリガするであろう周波数を欠くように生成される、請求項1~10のいずれか一項に記載の方法。
- 前記元のスピーチ信号と比較して欠けている前記周波数が、前記予め測定された領域固有の残響モードに一致する、請求項11に記載の方法。
- 前記元のスピーチ信号と比較して欠けている前記周波数が20~200Hzの範囲内である、請求項11又は12に記載の方法。
- スピーチ明瞭度阻害装置であって、
制御回路であって、
マイクロホンから、元のスピーチに対応する元のスピーチ信号を受信し、
前記元のスピーチ信号を、フィルタであって、前記フィルタからの出力が、前記元のスピーチが対象の領域内の人間への阻害を引き起こす可能性が高くなるほど前記元のスピーチ信号内に子音が存在するかどうかを示す、フィルタ、に供し、
前記フィルタからの出力が、前記元のスピーチが前記対象の領域内の人間への阻害を引き起こす可能性が高くなるほど前記元のスピーチ信号内に子音が存在することを示すことを条件として、
前記元のスピーチ信号から、明瞭度阻害マスキング信号であって、(a)前記元のスピーチ信号に対する時間遅延、(b)発振周波数に従って変化する前記時間遅延、及び(c)変調される振幅を有するように生成されることにより前記元のスピーチ信号とは異なる、明瞭度阻害マスキング信号、を生成し、
前記明瞭度阻害マスキング信号をスピーカを通じて出力させて、前記元のスピーチ信号の明瞭度のレベルを低減させ、
前記元のスピーチが前記対象の領域内の人間への阻害を引き起こす可能性がもはや高くないことを示す前記フィルタからの出力に応答して、前記明瞭度阻害マスキング信号の生成を中止するように構成された、制御回路、を備える、スピーチ明瞭度阻害装置。 - 前記時間遅延が少なくとも80msである、請求項14に記載の装置。
- 前記発振周波数が、2~6Hzの速度で前記時間遅延を調整する、請求項14又は15に記載の装置。
- 前記フィルタからの出力が、前記元のスピーチ信号が閾値を上回る周波数を含むと前記フィルタが判定したことに応答して、前記元のスピーチが対象の領域内の人間への阻害を引き起こす可能性が高くなるほど前記元のスピーチ信号内に子音が存在することを示す、請求項14~16のいずれか一項に記載の装置。
- 前記明瞭度阻害マスキング信号の振幅が、前記元のスピーチ信号の振幅の40~90%から発振する、請求項14~17のいずれか一項に記載の装置。
- 前記制御回路が、明瞭度阻害マスキング信号と一緒に、予め録音した複数の声の混合物を前記スピーカに出力させるように更に構成されている、請求項14~18のいずれか一項に記載の装置。
- 前記明瞭度阻害マスキング信号が、初期レベルのラウドネスを維持又は実質的に維持しながら、前記対象の領域内の予め測定された領域固有の残響モードをさもなければトリガするであろう周波数を欠くように生成される、請求項14~19のいずれか一項に記載の装置。
- スピーチ明瞭度阻害システムであって、
マイクロホンと、
スピーカと、
制御回路であって、
前記マイクロホンから、元のスピーチに対応する元のスピーチ信号を受信し、
前記元のスピーチ信号を、フィルタであって、前記フィルタからの出力が、前記元のスピーチが対象の領域内の人間への阻害を引き起こす可能性が高くなるほど前記元のスピーチ信号内に子音が存在するかどうかを示す、フィルタ、に供し、
前記フィルタからの出力が、前記元のスピーチが前記対象の領域内の人間への阻害を引き起こす可能性が高くなるほど前記元のスピーチ信号内に子音が存在することを示すことを条件として、
前記元のスピーチ信号から、明瞭度阻害マスキング信号であって、(a)前記元のスピーチ信号に対する時間遅延、(b)発振周波数に従って変化する前記時間遅延、及び(c)変調される振幅を有するように生成されることにより前記元のスピーチ信号とは異なる、明瞭度阻害マスキング信号、を生成し、
前記明瞭度阻害マスキング信号を前記スピーカを通じて出力させて、前記元のスピーチ信号の明瞭度のレベルを低減させ、
前記元のスピーチが前記対象の領域内の人間への阻害を引き起こす可能性がもはや高くないことを示す前記フィルタからの出力に応答して、前記明瞭度阻害マスキング信号の生成を中止するように構成された、制御回路と、を備える、スピーチ明瞭度阻害システム。 - 請求項21に記載のシステムを備える、音響壁。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US15/459,273 | 2017-03-15 | ||
US15/459,273 US10304473B2 (en) | 2017-03-15 | 2017-03-15 | Speech privacy system and/or associated method |
PCT/US2018/022326 WO2018170052A1 (en) | 2017-03-15 | 2018-03-14 | Speech privacy system and/or associated method |
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JP2020515887A JP2020515887A (ja) | 2020-05-28 |
JP7179753B2 true JP7179753B2 (ja) | 2022-11-29 |
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CN111128208B (zh) * | 2018-10-30 | 2023-09-05 | 比亚迪股份有限公司 | 一种便携式激励器 |
FI20195933A1 (fi) * | 2019-10-30 | 2021-05-01 | Nokia Technologies Oy | Yksityisyyden suojaus tilaäänen tallennuksessa |
KR102288182B1 (ko) * | 2020-03-12 | 2021-08-11 | 한국과학기술원 | 음성 사생활 보호 방법, 음성 사생활 보호 장치 및 이를 이용한 모바일 단말 |
JP6961855B1 (ja) * | 2021-06-10 | 2021-11-05 | 功憲 末次 | 遮音装置 |
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BR112019019151A2 (pt) | 2020-04-14 |
US10304473B2 (en) | 2019-05-28 |
DE112018001393T5 (de) | 2020-02-13 |
KR20190122791A (ko) | 2019-10-30 |
US20180268835A1 (en) | 2018-09-20 |
WO2018170052A1 (en) | 2018-09-20 |
JP2020515887A (ja) | 2020-05-28 |
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DE112018001393B4 (de) | 2021-12-02 |
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