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公开(公告)号:US08401204B2
公开(公告)日:2013-03-19
申请号:US12530506
申请日:2008-03-04
申请人: Jean-Claude Odent , Benoît Mazeaud
发明人: Jean-Claude Odent , Benoît Mazeaud
IPC分类号: A61F11/06
CPC分类号: G10K11/178
摘要: A method and a system for the active reduction, at a predetermined area, of the energy of a sound signal (dk(n)), also called a diffused noise signal, generated at the area by a primary signal (xk(n)), or noise signal, by the emission of a plurality of counter-noise signals (yk(n)) having an effect antagonistic to the diffused noise signal (dk(n)), each of the counter-noise signals (yk(n)) including a feedback counter-noise signal (yfbkk(n)) and a feed-forward counter-noise signal (yfwdk(n)). The method includes detecting the periodical components of diffused noise signal (dk(n)) for adjusting the feedback counter-noise signal (yfbkk(n)), and modelling the inverse of the secondary path for adjusting the feedback counter-noise (yfbkk(n)) and feed-forward counter-noise (yfwdk(n)) signals. The invention can be implemented to any type of industrial or non-industrial noise and in any location such as working places and relaxation places.
摘要翻译: 一种在主区域由主信号(xk(n))产生的在声音信号(dk(n))的能量的预定区域中也称为扩散噪声信号的方法和系统, 或噪声信号,通过发射具有与扩散噪声信号(dk(n))对应的作用的多个反噪声信号(yk(n)),每个反噪声信号(yk(n) )包括反馈反噪声信号(yfbkk(n))和前馈反噪声信号(yfwdk(n)))。 该方法包括检测用于调整反馈反噪声信号(yfbkk(n))的扩散噪声信号(dk(n))的周期分量,以及对用于调整反馈反噪声的次级路径的倒数进行建模(yfbkk(n) n))和前馈反噪声(yfwdk(n))信号。 本发明可以实现为任何类型的工业或非工业噪声,并且在诸如工作场所和放松位置的任何位置。
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公开(公告)号:US20100034398A1
公开(公告)日:2010-02-11
申请号:US12530506
申请日:2008-03-04
申请人: Jean-Claude Odent , Benoît Mazeaud
发明人: Jean-Claude Odent , Benoît Mazeaud
CPC分类号: G10K11/178
摘要: A method and a system for the active reduction, at a predetermined area, of the energy of a sound signal (dk(n)), also called a diffused noise signal, generated at the area by a primary signal (xk(n)), or noise signal, by the emission of a plurality of counter-noise signals (yk(n)) having an effect antagonistic to the diffused noise signal (dk(n)), each of the counter-noise signals (yk(n)) including a feedback counter-noise signal (yfbkk(n)) and a feed-forward counter-noise signal (yfwdk(n)). The method includes detecting the periodical components of diffused noise signal (dk(n)) for adjusting the feedback counter-noise signal (yfbkk(n)), and modelling the inverse of the secondary path for adjusting the feedback counter-noise (yfbkk(n)) and feed-forward counter-noise (yfwdk(n)) signals. The invention can be implemented to any type of industrial or non-industrial noise and in any location such as working places and relaxation places.
摘要翻译: 一种在主区域由主信号(xk(n))产生的在声音信号(dk(n))的能量的预定区域中也称为扩散噪声信号的方法和系统, 或噪声信号,通过发射具有与扩散噪声信号(dk(n))对应的作用的多个反噪声信号(yk(n)),每个反噪声信号(yk(n) )包括反馈反噪声信号(yfbkk(n))和前馈反噪声信号(yfwdk(n)))。 该方法包括检测用于调整反馈反噪声信号(yfbkk(n))的扩散噪声信号(dk(n))的周期分量,以及对用于调整反馈反噪声的次级路径的倒数进行建模(yfbkk(n) n))和前馈反噪声(yfwdk(n))信号。 本发明可以实现为任何类型的工业或非工业噪声,并且在诸如工作场所和放松位置的任何位置。
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