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1. 发明授权

EP2361411B1 PROCÉDÉ DE TRAITEMENT DU SIGNAL AUDIONUMÉRIQUE 有权转让
公开(公告)号：EP2361411B1
公开(公告)日：2019-07-10
申请号：EP09768115.9
申请日：2009-11-25
申请人： A Volute
发明人： PHAM, Tuyen , GREFF, Raphaël , ALLAIS, Paul
IPC分类号： G06F17/15 , G06F17/14 , H04S1/00 , H04S3/00

2. 发明授权

EP3297298B1 METHOD FOR REPRODUCING SPATIALLY DISTRIBUTED SOUNDS 有权转让
公开(公告)号：EP3297298B1
公开(公告)日：2020-05-06
申请号：EP16306190.6
申请日：2016-09-19
申请人： A-Volute
发明人： GREFF, Raphaël Nicolas , PHAM, Hong Cong Tuyen
IPC分类号： H04S3/02 , H04S7/00

3. 发明公开

EP3297298A1 METHOD FOR REPRODUCING SPATIALLY DISTRIBUTED SOUNDS 有权转让
标题翻译：再现空间分布式声音的方法
公开(公告)号：EP3297298A1
公开(公告)日：2018-03-21
申请号：EP16306190.6
申请日：2016-09-19
申请人： A-Volute
发明人： GREFF, Raphaël Nicolas , PHAM, Hong Cong Tuyen
IPC分类号： H04S3/02 , H04S7/00
摘要： The invention relates to a method for reproducing spatially distributed sounds of a multichannel audio signal comprising: receiving time-dependent input audio signals and performing a time-frequency transform; for each time-frequency tile, determining an active directional vector D a and a reactive directional vector D r from time-frequency representations of different input channels for said time-frequency tile, determining positions of virtual sound sources (VS1, VS2, VS3) with respect to the reference listening point (O) from the active directional vector D a and the reactive directional vector D r , and determining frequency signal values to each virtual sound sources (VS1, VS2, VS3), and distributing time-frequency signal values of said virtual sound sources to electroacoustic transducers on the basis of a comparison between the positions of the virtual sound sources in the virtual spatial configuration and the actual positions of said electroacoustic transducers in an actual spatial configuration.
摘要翻译：本发明涉及一种用于再现多声道音频信号的空间分布声音的方法，包括：接收时间相关输入音频信号并执行时间 - 频率变换; 对于每个时间频率片，从所述时间频率片的不同输入声道的时间频率表示确定有效方向矢量Da和无功方向矢量Dr，相对于时间频率片确定虚拟声源（VS1，VS2，VS3）的位置从有效方向矢量Da和无功方向矢量Dr发送到参考收听点（O），并且确定到每个虚拟声源（VS1，VS2，VS3）的频率信号值，并且分配所述虚拟声音的时频信号值基于在虚拟空间配置中的虚拟声源的位置与实际空间配置中的所述电声换能器的实际位置之间的比较，对电声换能器提供源。

4. 发明公开

EP3840404A1 A METHOD FOR AUDIO RENDERING BY AN APPARATUS 有权转让
公开(公告)号：EP3840404A1
公开(公告)日：2021-06-23
申请号：EP19306698.2
申请日：2019-12-19
申请人： A Volute
发明人： GRANGER, Damien , SOUVIRAA-LABASTIE, Nathan , DELEPLANQUE, Antoine
IPC分类号： H04R3/04 , H03G9/02 , H03G5/16
摘要： A method for audio rendering by an apparatus comprising at least one audio rendering device, the method comprising: extracting (S10) a plurality of frequency band components from an input audio signal; determining (S15) from the device frequency response and the plurality of extracted frequency band components at least one indicator representative of masking frequencies energy, masking frequencies corresponding to frequency bands that are above a frequency threshold; determining at least one correction factor (S16) from the indicator representative of masking frequencies energy; e) for each frequency band, determining a second acoustic level threshold (S20) by modifying (S17) with the correction factor a predetermined first acoustic level threshold associated with said frequency band, and determining a reduction gain from a comparison (S30) between an acoustic level of the extracted frequency band and the second acoustic level threshold associated to said extracted frequency band, and applying (S40) the reduction gain.

5. 发明公开

EP2361411A2 PROCÉDÉ DE TRAITEMENT DU SIGNAL, NOTAMMENT AUDIONUMÉRIQUE 有权转让
标题翻译：方法用于处理信号，特别是数字音频信号
公开(公告)号：EP2361411A2
公开(公告)日：2011-08-31
申请号：EP09768115.9
申请日：2009-11-25
申请人： A Volute
发明人： PHAM, Tuyen , GREFF, Raphaël , ALLAIS, Paul
IPC分类号： G06F17/15 , H04S1/00 , H04S3/00 , G06F17/14
CPC分类号： G06F17/156 , G06F17/142 , H04S1/002 , H04S7/307 , H04S2400/11 , H04S2420/01 , H04S2420/07
摘要： The invention relates to a method for processing a signal, in particular a digital audio signal, suitable for being implemented by a digital signal processor (DSP) having libraries for calculating Fourier transforms from the complex number space to the complex number space, for digitally processing P input signals, P being an integer at least equal to 2, more particularly for filtering said P input signals by the convolution of sampled fast Fourier transforms (FFT), thus obtaining Q output signals, Q being an integer at least equal to 2. According to the invention, the method includes at least the following steps: - grouping said P input signals by twos, one representing the real portion and the other the imaginary portion of a complex number, thus defining one or more input vectors, - filtering said input vector or vectors, passing through the Fourier space, thus generating one or more output vectors, which are complex numbers, the real portion and the imaginary portion of said vector or each one of said output vectors respectively representing one of said Q output signals.

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