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1. 发明授权

US06624841B1 Videoconference system 有权
标题翻译：视频会议系统
公开(公告)号：US06624841B1
公开(公告)日：2003-09-23
申请号：US09402022
申请日：2000-01-19
申请人： Georges Buchner , Yannick Mahieux , Christian Wipliez , Jean-Pascal Jullien
发明人： Georges Buchner , Yannick Mahieux , Christian Wipliez , Jean-Pascal Jullien
IPC分类号： H04N714
CPC分类号： H04N7/15 , H04N7/142
摘要： A video-conferencing system between participants located at distant sites, each site featuring a viewing screen. The viewing screen is a large screen of the projection, overhead projection, or direct projection type which has one or more viewing systems forming an image wall to simultaneously view all the distant participants within a space reproduced on the image wall formed by the screen. The system includes devices for each site that spatially distribute the sound to match the sound generated by each distant participant and the image of the participant projected on the screen at the site considered.
摘要翻译：在远程站点的参与者之间的视频会议系统，每个站点都具有观看屏幕。观看屏幕是投影，俯仰投影或直接投影型的大屏幕，其具有形成图像壁的一个或多个观看系统，以同时观看由屏幕形成的图像壁上再现的空间内的所有遥远参与者。该系统包括用于每个站点的设备，其在空间上分布声音以匹配每个远程参与者产生的声音以及在所考虑的场所投影在屏幕上的与会者的图像。

2. 发明授权

US5812674A Method to simulate the acoustical quality of a room and associated audio-digital processor 失效
标题翻译：用于模拟房间和相关音频数字处理器的声学质量的方法
公开(公告)号：US5812674A
公开(公告)日：1998-09-22
申请号：US700073
申请日：1996-08-20
申请人： Jean Marc Jot , Jean-Pascal Jullien , Olivier Warusfel
发明人： Jean Marc Jot , Jean-Pascal Jullien , Olivier Warusfel
IPC分类号： H04R27/00 , H04S3/02 , H04S5/00 , H04S7/00 , H04R5/00
CPC分类号： H04S5/005 , H04S7/305 , H04R27/00 , H04S2400/11 , H04S3/02
摘要： A method for the simulation of the acoustical quality produced by a virtual sound source and for the localizing of this source with respect to one or more listeners, and one or more original sound sources. This method consists in: 1) fixing values of perceptual parameters defining the acoustical quality to be simulated and values of parameters defining the localization of a virtual source, 2) converting these values into a pulse response described by its energy distribution as a function of the time and the frequency, 3) carrying out a context compensation so as to take account of an existing room effect, 4) obtaining an artificial reverberation from elementary signals so as to achieve a virtual acoustic environment in real time and control the localizing of the virtual source. This method can be used to modify sound signals coming from a real source, or to create sound effects on recording media. An acoustic virtual processor which enables implementation of this method comprises a signal processing "room" module that enables the obtaining of an artificial reverberation and a signal processing "pan" module enabling the controlling of the localization and the movement of the sound source and that carries out a format conversion into another reproduction mode. The acoustic virtual processor can be used to fit out all types of entertainment halls or games halls.
摘要翻译：用于模拟由虚拟声源产生的声学质量并且用于相对于一个或多个听众定位该源的方法以及一个或多个原始声源。该方法包括：1）固定定义要仿真的声学质量的感知参数的值和定义虚拟源的定位的参数值，2）将这些值转换成由其能量分布描述的脉冲响应，作为时间和频率，3）进行上下文补偿，以考虑现有的房间效应; 4）从基本信号获得人为混响，实时实现虚拟声学环境，并控制虚拟的本地化资源。该方法可用于修改来自真实来源的声音信号，或者在录制媒体上创建声音效果。能够实现该方法的声学虚拟处理器包括能够获得人造混响的信号处理“房间”模块和能够控制声源的定位和移动的信号处理“平移”模块，将格式转换为另一种再现模式。声学虚拟处理器可用于装备所有类型的娱乐厅或游戏厅。

3. 发明授权

US5343521A Device for processing echo, particularly acoustic echo in a telephone line 失效
标题翻译：用于处理回声的设备，特别是电话线中的声学回声
公开(公告)号：US5343521A
公开(公告)日：1994-08-30
申请号：US678282
申请日：1991-04-16
申请人： Jean-Pascal Jullien , Gregoire Le Tourneur
发明人： Jean-Pascal Jullien , Gregoire Le Tourneur
IPC分类号： H04B3/23 , H04M9/08
CPC分类号： H04B3/23 , H04M9/082 , H04B3/238
摘要： The device comprises an echo cancelling circuit receiving a first signal and a second signal and a real echo between channels for producing a third signal containing the second signal and a difference between the real echo and the estimated echo. Detectors detect the echo difference and the second signal in the third signal when the level of the third signal exceeds a predetermined threshold. Circuits gain-control the adaptation in the adaptive filtration of the echo cancelling circuit in such a way as to modify the adaptation gain when the second signal is not detected and to prohibit all filtration modifications as long as the second signal is detected. For instance, for an acoustic echo in a telephone set, the echo is not processed when the third signal contains a local speech signal as second signal.
摘要翻译： PCT No.PCT / FR90 / 00621 Sec。 371日期：1991年4月16日 102（e）日期1991年4月16日PCT 1990年8月20日PCT PCT。公开号WO91 / 03116 日期为1991年3月7日。该装置包括回波消除电路，其接收信号之间的第一信号和第二信号以及实际回波，用于产生包含第二信号的第三信号和真实回波与估计回波之间的差。当第三信号的电平超过预定阈值时，检测器检测第三信号中的回波差和第二信号。电路在回波消除电路的自适应滤波中增益控制，以便在不检测到第二信号时修改自适应增益，并且只要检测到第二信号，就禁止所有的滤波修改。例如，对于电话机中的声学回声，当第三信号包含本地语音信号作为第二信号时，回波不被处理。

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