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1. 发明申请

US20220007121A1 METHOD AND DEVICE FOR CONTROLLING THE DISTORTION OF A LOUDSPEAKER SYSTEM ON BOARD A VEHICLE 有权
公开(公告)号：US20220007121A1
公开(公告)日：2022-01-06
申请号：US17283348
申请日：2019-10-08
申请人： ARKAMYS
发明人： Daniil SINEV , Guillaume ROSSI FERRARI , Ivan BOURMEYSTER
IPC分类号： H04R29/00 , H03G3/30
摘要： A method for controlling the distortion generated by a system having at least one loudspeaker on board a vehicle, the loudspeaker being designed to receive an audio signal. The method includes measuring at least one indicator of the distortion of the at least one loudspeaker, determining an acceptable distortion threshold for each distortion indicator, which can be used to determine a maximum acceptable amplitude for each frequency in a frequency range of interest of the audio signal entering the loudspeaker system, generating an assembly comprising at least one filter, correcting the audio signal entering the loudspeaker system by applying at least one filter determined in the generating step.

2. 发明授权

US09520137B2 Method for suppressing the late reverberation of an audio signal 有权
标题翻译：用于抑制音频信号的后期混响的方法
公开(公告)号：US09520137B2
公开(公告)日：2016-12-13
申请号：US14907216
申请日：2014-07-21
申请人： ARKAMYS
发明人： Nicolas Lopez , Gaël Richard , Yves Grenier
IPC分类号： H04B3/20 , H04R29/00 , H03G3/00 , H04B15/00 , G10L19/06 , G10L21/02 , G10K11/00 , G10L19/02 , G10L21/0208
CPC分类号： G10L19/06 , G10K11/002 , G10L19/0212 , G10L21/02 , G10L2021/02082
摘要： A method for suppressing the late reverberation of an audio signal. A plurality of prediction vectors are calculated. A plurality of observation vectors from the modulus of the complex time-frequency transform of an input signal is generated. A plurality of synthesis dictionaries from the plurality of observation vectors are constructed. A late reverberation spectrum from the plurality of synthesis dictionaries and the plurality of prediction vectors are estimated. A plurality of observation vectors are filtered to eliminate the late reverberation spectrum and obtain a dereverberated signal modulus.
摘要翻译：一种用于抑制音频信号的后期混响的方法。计算多个预测矢量。产生来自输入信号的复数时频变换的模数的多个观测向量。从多个观察向量构成多个合成词典。估计来自多个合成字典和多个预测向量的后期混响频谱。对多个观察矢量进行滤波以消除后期混响频谱，并获得反混响信号模数。

3. 发明申请

US20220078573A1 Sound Spatialisation Method 有权
公开(公告)号：US20220078573A1
公开(公告)日：2022-03-10
申请号：US17469284
申请日：2021-09-08
申请人： ARKAMYS
发明人： Damien Jacquet
IPC分类号： H04S7/00
摘要： A sound spatialisation method includes determining digital processing parameters to be applied to sound signals to be broadcast by a set of at least two loudspeakers in order to reproduce a virtual sound source at a desired position, and restoring sound signals by the loudspeakers during which the digital processing parameters are applied to the sound signals. The sound spatialisation method also includes defining a trajectory defined by a set of N points, with two consecutive points of the trajectory being connected together by a curve, and positioning during which the desired position of the virtual sound source is defined on the trajectory.

4. 发明授权

US10659902B2 Method and system of broadcasting a 360° audio signal 有权
公开(公告)号：US10659902B2
公开(公告)日：2020-05-19
申请号：US16096339
申请日：2017-04-20
申请人： ARKAMYS
发明人： Delphine Devallez , Frédéric Amadu
IPC分类号： H04R5/00 , H04S7/00 , H04R1/40 , H04R3/00
摘要： A system and method of processing a sound signal. The method of processing a sound signal that includes the following steps: Synchronous reception of an input sound signal (Sinput) of N microphones, N being a natural number greater than or equal to three; Encoding of the input sound signal (Sinput) in a data format (D) of sound, the encoding including a sub-step of transforming the input signal into an ambisonic format of order R, R being a natural number greater than or equal to one, the sub-step of transformation into an ambisonic format is carried out by a Fast Fourier Transform, a matrix multiplication, an Inverse Fast Fourier Transform and by a band pass filter; and Return of an output sound signal (Soutput) by digital processing of the sound data (D).

5. 发明申请

US20080152153A1 METHOD FOR PRODUCING MORE THAN TWO ELECTRIC TIME SIGNALS FROM ONE FIRST AND ONE SECOND ELECTRIC TIME SIGNAL 有权
标题翻译：用于从一个第一和第二电时间信号产生多于两个电时间信号的方法
公开(公告)号：US20080152153A1
公开(公告)日：2008-06-26
申请号：US11945889
申请日：2007-11-27
申请人： Jerome Monceaux , Frederic Amadu , Yann Lecoeur
发明人： Jerome Monceaux , Frederic Amadu , Yann Lecoeur
IPC分类号： H04R5/00
CPC分类号： H04R5/04
摘要： The invention essentially relates to a method of producing more than two different electric time sound signals (C(t), GF(t), DF(t), GA(t), DA(t)) from two initial electric time signals (GI(t), DI(t)). The inventive method comprises the following steps consisting in: in the frequency domain, producing a central electric frequency sound signal (C(v)) from the in-phase frequency components of the initial signals; and producing two front signals (GF(t), DF(t)) by subtracting the central signal (C(t)) from the initial signals (GI(t), DI(t)) In addition, two rear signals (GA(t), DA(t)) can be produced from the out-of-phase frequency components of the initial signals. In this way, the method can be used to transform a stereophonic signal into a type 5.1 signal comprising five different sound signals.
摘要翻译：本发明基本上涉及从两个初始电时信号（C（t），GF（t），DF（t），GA（t），DA（t））产生两个以上的不同电时间声信号 GI（t），DI（t））。本发明的方法包括以下步骤：在频域中，从初始信号的同相频率分量产生中心电频声音信号（C（v））; 通过从初始信号（GI（t），DI（t））中减去中心信号（C（t））而产生两个前信号（GF（t），DF（t））。另外，两个后信号（t），DA（t））可以从初始信号的异相频率分量产生。以这种方式，该方法可用于将立体声信号转换成包括五个不同声音信号的5.1型信号。

6. 发明授权

US11432092B2 Method and system for processing an audio signal including ambisonic encoding 有权
公开(公告)号：US11432092B2
公开(公告)日：2022-08-30
申请号：US16634193
申请日：2018-07-17
申请人： ARKAMYS
发明人： Frédéric Amadu
IPC分类号： H04S7/00 , G10L19/008 , H04R1/40 , H04R3/00 , H04R5/027 , H04S3/00
摘要： A method for processing a sound signal including synchronously acquiring an input sound signal Sinput by means of at least two omnidirectional microphones, encoding the input sound signal Sentréeinput in a sound data D format of the ambisonics type of order R, R being a natural number greater than or equal to one, the encoding step including a directivity optimisation sub-step carried out by means of filters of the Finite Impulse Response filter type. Each of the signals acquired by the microphones is filtered during the directivity optimisation sub-step by a FIR filter, then subtracted from an unfiltered version of each of the other signals in order to obtain N enhanced signals. The present invention also relates to a system for processing the sound signal.

7. 发明申请

US20210076132A1 METHOD AND SYSTEM FOR OPTIMIZING THE LOW-FREQUENCY SOUND RENDITION OF AN AUDIO SIGNAL 有权
公开(公告)号：US20210076132A1
公开(公告)日：2021-03-11
申请号：US16987605
申请日：2020-08-07
申请人： ARKAMYS
发明人： François POSTEL , Jacquemin VIDAL
IPC分类号： H04R3/04 , H03G9/02 , H03G5/02 , H03G3/02
摘要： A system and method for optimizing the low-frequency sound rendition of an audio signal, implementing variations in a plurality of parameters of the audio signal according to the volume level of the signal chosen by a user, in particular filtering or compression parameters, or parameters relating to the harmonics of the audio signal, while seeking to optimize the dynamics and the bandwidth of the audio signal according to the volume, in order to provide an optimal rendition to the user.

8. 发明授权

US10175934B2 System for optimization of music listening 有权
公开(公告)号：US10175934B2
公开(公告)日：2019-01-08
申请号：US15108567
申请日：2014-12-19
申请人： ARKAMYS
发明人： Frédéric Amadu
IPC分类号： G06F3/16 , H04R27/00 , H04R3/12 , A61B5/12 , H04L29/08 , H04L29/06 , H04R27/02
摘要： A system for optimizing music listening which includes a multimedia server controlled by a user. The multimedia server includes a transmitter of the multimedia server to transmit an audio stream to various connected appliances provided with an acoustic emitter and a selector to select at least one connected appliance to which the audio stream is transmitted. A predetermined table of characteristics links the various connected appliances to a measurement of the acoustic reproduction capabilities thereof. A predetermined user table links at least one user with the hearing capabilities thereof. An adapter to adapt the audio stream in accordance with the measurement of the acoustic reproduction capabilities of the connected appliance to which the audio stream is transmitted and in accordance with the hearing capabilities of the user connected to the multimedia server.

9. 发明授权

US09112464B2 Method for normalizing the power of a sound signal and associated processing device 有权
标题翻译：用于使声音信号和相关处理装置的功率正常化的方法
公开(公告)号：US09112464B2
公开(公告)日：2015-08-18
申请号：US14125576
申请日：2012-06-18
申请人： Frederic Amadu , Thomas Esnault , Alexandre Fenieres
发明人： Frederic Amadu , Thomas Esnault , Alexandre Fenieres
IPC分类号： H03G3/00 , H03G3/30 , H03G7/00
CPC分类号： H03G3/00 , H03G3/3005 , H03G7/007
摘要： A method and device for normalizing the power of an electrical signal, referred to as an original sound signal S1. The method detects the envelope of the original sound signal S1 and compares the power value of the envelope signal S2 with a threshold value K1. The gain signal S3 is calculated in accordance with the comparison and smoothed to obtain a smoothed gain signal S4. The original sound signal S1 is delayed by a delay T. The smoothed gain signal S4 is applied to the delayed original sound signal S1 to obtain a normalized sound signal S5. The method is suitable for a source including a plurality of channels.
摘要翻译：一种用于对电信号的功率进行归一化的方法和装置，称为原始声音信号S1。该方法检测原始声音信号S1的包络，并将包络信号S2的功率值与阈值K1进行比较。根据比较来计算增益信号S3并进行平滑处理以获得平滑的增益信号S4。原始声音信号S1被延迟延迟T.平滑的增益信号S4被加到延迟的原始声音信号S1上，以获得归一化的声音信号S5。该方法适合于包括多个信道的源。

10. 发明授权

US08768496B2 Method for selecting perceptually optimal HRTF filters in a database according to morphological parameters 有权
标题翻译：根据形态学参数在数据库中选择感知最优HRTF滤波器的方法
公开(公告)号：US08768496B2
公开(公告)日：2014-07-01
申请号：US13640729
申请日：2011-04-12
申请人： Brian Katz , David Schönstein
发明人： Brian Katz , David Schönstein
IPC分类号： G06F17/00 , H04R5/02
CPC分类号： H04S7/30 , H04S3/002 , H04S2400/01 , H04S2420/01
摘要： A method for selecting a perceptually optimal HRTF in a database according to morphological parameters. A first database includes the HRTFs of subjects M, a second database includes the morphological parameters of the subjects, and a third database corresponds to a perceptual classification of the HRTFs. The N most relevant morphological parameters are sorted by correlating the second and third databases. A multidimensional space is created, which optimizes the spatial separation between the HRTFs according to the classification thereof in the third database to obtain an optimized space. An optimized projection model MPO is calculated for correlating K optimal morphological parameters with the corresponding position of the HRTF filters in the optimized space. For any user whose HRTF is not included in the database, at least one HRTF can be selected from the database BD1 according to the parameters K of the user and the optimized projection model MPO.
摘要翻译：一种根据形态参数在数据库中选择感知最优HRTF的方法。第一数据库包括对象M的HRTF，第二数据库包括受试者的形态参数，第三数据库对应于HRTF的感知分类。通过关联第二和第三数据库对N个最相关的形态参数进行排序。创建多维空间，根据第三数据库中的分类优化HRTF之间的空间分隔，以获得优化的空间。计算优化的投影模型MPO，将K最优形态参数与优化空间中HRTF滤波器的相应位置相关联。对于HRTF不包括在数据库中的任何用户，可以根据用户的参数K和优化的投影模型MPO从数据库BD1中选择至少一个HRTF。

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