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1. 发明申请

US20100305725A1 Sound field control in multiple listening regions 有权
标题翻译：在多个聆听区域进行声场控制
公开(公告)号：US20100305725A1
公开(公告)日：2010-12-02
申请号：US12453958
申请日：2009-05-28
申请人： Lars-Johan Brannmark , Mikael Sternad , Mathias Johansson
发明人： Lars-Johan Brannmark , Mikael Sternad , Mathias Johansson
IPC分类号： G06F17/00
CPC分类号： H04S7/301 , H04R2499/13
摘要： A scheme to design an audio precompensation controller for a multichannel audio system, with a prescribed number N of loudspeakers in prescribed positions so that listeners positioned in any of P>1 spatially extended listening regions should be given the illusion of being in another acoustic environment that has L sound sources located at prescribed positions in a prescribed room acoustics. The method provides a unified joint solution to the problems of equalizer design, crossover design, delay and level calibration, sum-response optimization and up-mixing. A multi-input multi-output audio precompensation controller is designed for an associated sound generating system including a limited number of loudspeaker inputs for emulating a number of virtual sound sources. Method includes: estimating, for each loudspeaker input signals, an impulse response at each of a set of measurement positions that cover the P listening regions; specifying a target impulse response (target stages) for each virtual sound source at each measurement position; and determining adjustable filter parameters of the audio precompensation controller so that a criterion function is optimized.
摘要翻译：设计用于多声道音频系统的音频预补偿控制器的方案，其中规定数量的N个扬声器处于规定位置，使得位于P> 1空间延伸的收听区域中的任何一个的听众应被给予处于另一个声学环境中的错觉 L声源位于指定的房间声学的规定位置。该方法为均衡器设计，交叉设计，延迟和电平校准，求和响应优化和上调等问题提供了统一的联合解决方案。多输入多输出音频预补偿控制器被设计用于相关联的声音产生系统，包括用于模拟多个虚拟声源的有限数量的扬声器输入。方法包括：对于每个扬声器输入信号，估计覆盖P个收听区域的一组测量位置中的每一个处的脉冲响应; 在每个测量位置指定每个虚拟声源的目标脉冲响应（目标级）; 以及确定所述音频预补偿控制器的可调节滤波器参数，以便优化标准函数。

2. 发明申请

US20140153744A1 Audio Precompensation Controller Design Using a Variable Set of Support Loudspeakers 有权
标题翻译：音频预补偿控制器设计使用一组可变的支持扬声器
公开(公告)号：US20140153744A1
公开(公告)日：2014-06-05
申请号：US14009215
申请日：2012-03-22
申请人： Lars-Johan Brannmark , Anders Ahlen , Adrian Bahne
发明人： Lars-Johan Brannmark , Anders Ahlen , Adrian Bahne
IPC分类号： H04R3/04
CPC分类号： H04R3/04 , H04S5/00 , H04S7/301 , H04S7/305
摘要： Disclosed is a method and a system to determine an audio precompensation controller for an associated sound generating system including a total of N≧2 loudspeakers, each having a loudspeaker input. The audio precompensation controller has a number L≧1 inputs for L input signals and N outputs for N controller output signals, one to each loudspeaker. For each one of at least a subset of the N loudspeaker inputs, an impulse response is estimated at each measurement position. For each one of the L input signal(s), a selected one of the N loudspeakers is specified as a primary loudspeaker and a selected subset S including at least one of the N loudspeakers as support loudspeaker(s).
摘要翻译：公开了一种确定用于相关联的声音产生系统的音频预补偿控制器的方法和系统，包括总共具有扬声器输入的N≥2个扬声器。音频预补偿控制器具有L个输入信号的L≥1个输入和N个控制器输出信号的N个输出，每个扬声器一个。对于N个扬声器输入的至少一个子集中的每一个，在每个测量位置估计脉冲响应。对于L个输入信号中的每一个，将N个扬声器中的所选择的一个指定为主扬声器，并且将包括至少一个N个扬声器中的至少一个的选定子集S指定为支持扬声器。

3. 发明授权

US09781510B2 Audio precompensation controller design using a variable set of support loudspeakers 有权
公开(公告)号：US09781510B2
公开(公告)日：2017-10-03
申请号：US14009215
申请日：2012-03-22
申请人： Lars-Johan Brannmark , Anders Ahlen , Adrian Bahne
发明人： Lars-Johan Brannmark , Anders Ahlen , Adrian Bahne
IPC分类号： H04R5/00 , H04R3/04 , H04S7/00 , H04S5/00
CPC分类号： H04R3/04 , H04S5/00 , H04S7/301 , H04S7/305
摘要： Disclosed is a method and a system to determine an audio precompensation controller for an associated sound generating system including a total of N≧2 loudspeakers, each having a loudspeaker input. The audio precompensation controller has a number L≧1 inputs for L input signals and N outputs for N controller output signals, one to each loudspeaker. For each one of at least a subset of the N loudspeaker inputs, an impulse response is estimated at each measurement position. For each one of the L input signal(s), a selected one of the N loudspeakers is specified as a primary loudspeaker and a selected subset S including at least one of the N loudspeakers as support loudspeaker(s).

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