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1. 发明申请

WO1996006515A1 SOUND RECORDING AND REPRODUCTION SYSTEMS 审中-公开
标题翻译：声音记录和复制系统
公开(公告)号：WO1996006515A1
公开(公告)日：1996-02-29
申请号：PCT/GB1995002005
申请日：1995-08-24
申请人： ADAPTIVE AUDIO LIMITED , ORDUÑA-BUSTAMANTE, Felipe , KIRKEBY, Ole , HAMADA, Hareo , NELSON, Philip, Arthur
发明人： ADAPTIVE AUDIO LIMITED
IPC分类号： H04S01/00
CPC分类号： H04S1/002 , H04S1/005 , H04S1/007 , H04S3/002 , H04S2420/01
摘要： A method of recording sound for reproduction by a plurality of loudspeakers, or for processing sound for reproduction by a plurality of loudspeakers, is described in which some of the reproduced sound appears to a listener to emmanate from a virtual source which is spaced from the loudspeakers. A filter means (H) is used either in creating the recording, or in processing the recorded signals for supply to loudspeakers, the filter means (H) being created in a filter design step in which: a) a technique is employed to minimise error between the signals (w) reproduced at the intended position of a listener on playing the recording through the loudspeakers, and desired signals (d) at the intended position, wherein: b) said desired signals (d) to be produced at the listener are defined by signals (or an estimate of the signals) that would be produced at the ears of (or in the region of) the listener in said intended position by a source at the desired position of the virtual source. A least squares technique may be employed to minimise the time averaged error between the signal reproduced at the intended position of a listener and the desired signal, or it may be applied to the frequency domain.
摘要翻译：描述了一种通过多个扬声器记录用于再现的声音或用于处理由多个扬声器进行再现的声音的方法，其中一些再现的声音出现在听众身上，从与扬声器间隔开的虚拟源显现。滤波器装置（H）用于创建记录，或者在处理记录的信号供给扬声器时，在滤波器设计步骤中产生滤波器装置（H），其中：a）使用技术来最小化误差在通过扬声器播放记录时在收听者的预期位置处再现的信号（w）和期望的信号（d）之间，其中：b）在收听者处产生的所需期望信号（d）由在虚拟源的期望位置处的源在所述预期位置处的（或在该区域中）产生的信号（或信号的估计）定义。可以采用最小二乘法来最小化在收听者的预期位置再现的信号与期望信号之间的时间平均误差，或者将其应用于频域。

2. 发明申请

WO1994024835A1 METHOD OF REPRODUCING SOUND 审中-公开
标题翻译：再现声音的方法
公开(公告)号：WO1994024835A1
公开(公告)日：1994-10-27
申请号：PCT/GB1994000799
申请日：1994-04-15
申请人： ADAPTIVE AUDIO LIMITED , NELSON, Philip, Arthur
发明人： ADAPTIVE AUDIO LIMITED , NELSON, Philip, Arthur
IPC分类号： H04S03/02
CPC分类号： H04S3/02
摘要： A method of reproducing sound comprises creating a sound recording by recording the sound received by individual sensors of a compact cluster of at least three spaced-apart sound sensors which are located in a localised region of the recording space sound field which is desired to be subsequently reproduced, and subsequently reconstructing a representation of the original sound field in a localised region (S, Figure 2) of the listening space corresponding to said localised region of the recording space, by arranging at least three sound sources (Sources 1 to 4, Figure 10) in a spaced-apart distribution which surrounds the centre of the listening space localised region, the reproduction being aimed primarily at reproducing the direction of propagation of the sound waves in the localised region of the recording space, the vector of signals input to the sound sources being produced by subjecting the vector of recorded outputs of the sound sensors to a matrix (H(z)) of linear filters which have been derived using a least squares technique.
摘要翻译：一种再现声音的方法包括：通过记录位于记录空间声场的局部区域中的至少三个间隔开的声音传感器的小型集群的各个传感器接收的声音来产生声音记录，该区域期望随后再现并随后通过布置至少三个声源（来源1至4，图4）来重构与记录空间的所述局部区域对应的收听空间的局部区域（S，图2）中的原始声场的表示 10）以围绕收听空间局部区域的中心的间隔分布，再现目的主要在于再现声波在记录空间的局部区域中的传播方向，输入到声源通过使声音传感器的记录输出的矢量经受线性滤波器的矩阵（H（z））而产生已经使用最小二乘法技术得到。

3. 发明申请

WO2003030589A2 SOUND REPRODUCTION SYSTEMS 审中-公开
标题翻译：声音再现系统
公开(公告)号：WO2003030589A2
公开(公告)日：2003-04-10
申请号：PCT/GB2002/004363
申请日：2002-09-27
申请人： ADAPTIVE AUDIO LIMITED , NELSON, Philip, Arthur , TAKEUCHI, Takashi
发明人： NELSON, Philip, Arthur , TAKEUCHI, Takashi
IPC分类号： H04S1/00
CPC分类号： H04S5/00 , H04R1/26 , H04R2205/024 , H04S3/002 , H04S2400/05 , H04S2420/01
摘要： The sound reproduction system is of the kind which comprises electro-acoustic transducer means, and transducer drive means for driving the electro-acoustic transducer means in response to a plurality of channels of a sound recording. The electro-acoustic transducer means comprises sound emitters which are spaced-apart in use, the transducer drive means comprising filter means that has been designed and configured with the aim of reproducing at a listener location an approximation to the local sound field that would be present at the listener's ears in recording space, taking into account the characteristics and intended positioning of the sound emitters relative to the ears of the listener, and also taking into account the head related transfer functions of the listener. The invention concerns the fact that the electro-acoustic transducer means comprises at least one pair of sound emitters that are spaced from the interaural axis of the listener at the listener location and positioned substantially in a plane that includes said interaural axis and is inclined relative to a reference horizontal plane that also includes said interaural axis, the angle of inclination of said inclined plane relative to said horizontal plane being in the range 60° to 120°. The pair of transducers will usually be positioned higher than the head, and the preferred angle of inclination of said plane is in the range 75° to 105°.
摘要翻译：声音再现系统是包括电声换能器装置和用于响应于多个声音通道来驱动电声换能器装置的换能器驱动装置。电声换能器装置包括在使用中间隔开的声发射器，换能器驱动装置包括被设计和配置的滤波器装置，目的是在收听者位置再现将呈现的局部声场的近似在聆听者的耳朵上记录空间，考虑到声发射器相对于听众耳朵的特征和预期位置，并且还考虑到听众的头部相关传输功能。本发明涉及这样的事实，即电声换能器装置包括至少一对声发射器，它们在收听者位置处与收听者的耳间轴线间隔开，并且基本上位于包括所述耳间轴线的平面中并且相对于也包括所述髋轴的参考水平面，所述倾斜平面相对于所述水平面的倾斜角度在60°至120°的范围内。一对换能器通常位于头部以上，并且所述平面的优选倾斜角度在75°至105°的范围内。

4. 发明申请

WO2003030589A3 SOUND REPRODUCTION SYSTEMS 审中-公开
公开(公告)号：WO2003030589A3
公开(公告)日：2003-04-10
申请号：PCT/GB2002/004363
申请日：2002-09-27
申请人： ADAPTIVE AUDIO LIMITED , NELSON, Philip, Arthur , TAKEUCHI, Takashi
发明人： NELSON, Philip, Arthur , TAKEUCHI, Takashi
IPC分类号： H04S1/00
摘要： The sound reproduction system is of the kind which comprises electro-acoustic transducer means, and transducer drive means for driving the electro-acoustic transducer means in response to a plurality of channels of a sound recording. The electro-acoustic transducer means comprises sound emitters which are spaced-apart in use, the transducer drive means comprising filter means that has been designed and configured with the aim of reproducing at a listener location an approximation to the local sound field that would be present at the listener's ears in recording space, taking into account the characteristics and intended positioning of the sound emitters relative to the ears of the listener, and also taking into account the head related transfer functions of the listener. The invention concerns the fact that the electro-acoustic transducer means comprises at least one pair of sound emitters that are spaced from the interaural axis of the listener at the listener location and positioned substantially in a plane that includes said interaural axis and is inclined relative to a reference horizontal plane that also includes said interaural axis, the angle of inclination of said inclined plane relative to said horizontal plane being in the range 60° to 120°. The pair of transducers will usually be positioned higher than the head, and the preferred angle of inclination of said plane is in the range 75° to 105°.

5. 发明申请

WO2002001916A3 SOUND REPRODUCTION SYSTEMS 审中-公开
公开(公告)号：WO2002001916A3
公开(公告)日：2002-01-03
申请号：PCT/GB2001/002759
申请日：2001-06-22
申请人： ADAPTIVE AUDIO LIMITED , NELSON, Philip, Arthur , TAKEUCHI, Takashi
发明人： NELSON, Philip, Arthur , TAKEUCHI, Takashi
IPC分类号： H04S3/00
摘要： A sound reproduction system has pairs of sound emitters that subtend different angles Θ, the span angle, at the listener position. The pairs of sound emitters are arranged to be excited by different frequency bands of the signal output from an inverse means (H h , H l ). The operational span/frequency range of the pairs of sound emitters is determined by equation (I) where transducer span Θ is the angle subtended at the listener by a pair of transducers, where 0 n 0 is the speed of sound, and Δ is the equivalent distance between the ears. The sound emitters may be discrete speaker units, the differnt pairs of units being positioned at different span angles, or they may be constituted by area portions of an extended transducer (Fig. 10). When discrete speaker units are employed a cross-over filter (Fig.28) is used to provide drive signals in the different frequency bands to the different speaker pairs.

6. 发明申请

WO1997030566A1 SOUND RECORDING AND REPRODUCTION SYSTEMS 审中-公开
标题翻译：声音记录和复制系统
公开(公告)号：WO1997030566A1
公开(公告)日：1997-08-21
申请号：PCT/GB1997000415
申请日：1997-02-14
申请人： ADAPTIVE AUDIO LIMITED , NELSON, Philip, Arthur , KIRKEBY, Ole , HAMADA, Hareo
发明人： ADAPTIVE AUDIO LIMITED
IPC分类号： H04S01/00
CPC分类号： H04R5/02 , H04R2205/022 , H04S1/002 , H04S7/302 , H04S2420/01
摘要： With reference to the figure, a sound reproduction system (1) which provides virtual source imaging, comprises loudspeaker means in the form of a pair of loudspeakers (2), and loudspeaker drive means (3) for driving the loudspeakers (2) in response to output signals from a plurality of sound channels (4). The loudspeakers (2) comprise a closely-spaced pair of loudspeakers, the radiated outputs (5) of which are directed towards a listener (6) so as to define a convergent angle theta therewith of between 6 DEG and 20 DEG inclusive and, preferably, about 10 DEG . The loudspeakers (2) are disposed side by side in a contiguous manner within a single cabinet (7). The outputs (5) of the loudspeakers (2) converge at a point (8) between 0.2 metres and 4.0 metres (distance r?0?) from the loudspeakers. The distance DELTA S (span) between the centres of the two loudspeakers (2) is preferably 45.0 cm or less. The loudspeakers drive means (3) comprise a pair of filters with inputs u1 and u2, and outputs v1 and v2. The filters may be designed by employment of least mean squares (LMS) approximation, and be provided with or incorporate cross-talk cancellation means, head related transfer function (HRTF) means and/or modelling delay means.
摘要翻译：参考附图，提供虚拟源成像的声音再现系统（1）包括一对扬声器（2）形式的扬声器装置和用于响应于扬声器（2）驱动的扬声器驱动装置（3）以从多个声道（4）输出信号。扬声器（2）包括紧密间隔的一对扬声器，其辐射输出（5）指向收听者（6），从而将收敛角θ定义在6°和20°之间，并且优选地约10度。扬声器（2）在单个机柜（7）内以连续的方式并排布置。扬声器（2）的输出（5）会聚在距离扬声器0.2米到4.0米（距离r 0 0）之间的点（8）处。两个扬声器（2）的中心之间的距离DELTA S（跨度）优选为45.0cm以下。扬声器驱动装置（3）包括一对具有输入u1和u2的滤波器，并且输出v1和v2。可以通过使用最小均方（LMS）近似来设计滤波器，并且提供或结合串扰消除装置，头部相关传输函数（HRTF）装置和/或建模延迟装置。

7. 发明申请

WO2009004352A1 SOUND REPRODUCTION SYSTEMS 审中-公开
标题翻译：声音再现系统
公开(公告)号：WO2009004352A1
公开(公告)日：2009-01-08
申请号：PCT/GB2008/002310
申请日：2008-07-04
申请人： ADAPTIVE AUDIO LIMITED , TAKEUCHI, Takashi , NELSON, Philip, Arthur
发明人： TAKEUCHI, Takashi , NELSON, Philip, Arthur
IPC分类号： H04S1/00 , H04S3/00 , H04S5/00 , H04R1/26
CPC分类号： H04S5/00 , H04R1/26 , H04R2205/024 , H04S3/002 , H04S2400/05 , H04S2420/01
摘要： A sound reproduction system comprising electro-acoustic transducer means, and transducer drive means for driving the electro-acoustic transducer means (10, 11, 12) in response to a plurality of channels of a sound recording, the transducer drive means comprising filter means (H; C) which is configured to reproduce at a listener location an approximation to the local sound field that would be present at a listener's ears in recording space, taking into account the characteristics and intended position of the electro-acoustic transducer means relative to the ears of the listener, the electro-acoustic transducer means comprising first sound emitter means (10) which provides an intermediate sound emission channel, second sound emitter means (11) which provides a left sound emission channel and a third sound emitter means (12) which provides a right sound emission channel, the first sound emitter means being located intermediate of second and third sound emitter means, and at least one of the second and third sound emitter means being such that predominantly higher frequencies are transmitted closer to the first sound emitter means and predominantly lower frequencies are transmitted away from the first sound emitter means.
摘要翻译：一种声音再现系统，包括电声换能器装置和用于响应于多个声音通道驱动电声换能器装置（10,11,12）的换能器驱动装置，换能器驱动装置包括过滤装置 H; C），其被配置为在收听者位置再现将在存在于收听者耳朵的记录空间中存在的局部声场的近似值，同时考虑到电声换能器装置相对于声音换能器装置的特征和预期位置收听者的耳朵，电声换能器装置包括提供中间声音发射通道的第一声发射器装置（10），提供左声发射通道的第二声发射器装置（11）和第三声发射器装置（12）其提供正确的声音发射通道，第一声音发射器装置位于第二和第三声音发射器装置的中间，并且t中的至少一个他的第二和第三声发射器意味着主要是较高的频率被传输得更靠近第一声发射器装置，并且主要是较低频率被从第一声发射器装置传出。

8. 发明申请

WO1994001981A2 ADAPTIVE AUDIO SYSTEMS AND SOUND REPRODUCTION SYSTEMS 审中-公开
标题翻译：自适应音频系统和声音重现系统
公开(公告)号：WO1994001981A2
公开(公告)日：1994-01-20
申请号：PCT/GB1993001402
申请日：1993-07-05
申请人： ADAPTIVE AUDIO LIMITED , NELSON, Philip, Arthur , ORDUÑA-BUSTAMANTE, Felipe , HAMADA, Hareo
发明人： ADAPTIVE AUDIO LIMITED
IPC分类号： H04S07/00
CPC分类号： H03H21/0012 , H04R2205/024 , H04S1/002 , H04S7/302
摘要： An algorithm is described for sparsely updating the filter coefficients of an adaptive filter of an adaptive audio system to facilitate a high sampling rate without excessive processing capacity. Computer simulations are used to illustrate the potential for using an inverse filter matrix to manipulate the position of stereophonic images. The possibilities suggested could be used in conjunction with existing stereophonic recordings in order to improve stereophonic imaging in situations where the relative locations of loudspeakers and listener are constrained to be non-ideal. In one arrangement, real sound sources (S1, S2) provide to the listener the impression that the sources are at more widely-spaced positions (V1, V2). In another arrangement, employing four sound sources (S1, S2, S3, S4) the impression is created at two listener locations (M1, M2; M3, M4) that the sound is coming from a pair of sound sources positioned symmetrically of those listener locations.
摘要翻译：描述了一种用于稀疏地更新自适应音频系统的自适应滤波器的滤波器系数的算法，以便于没有过多处理能力的高采样率。使用计算机模拟来说明使用逆滤波器矩阵来操纵立体声图像的位置的可能性。建议的可能性可以与现有的立体声记录一起使用，以便在扬声器和听众的相对位置被限制为不理想的情况下改善立体声成像。在一种布置中，真实的声源（S1，S2）为听众提供了源在更广泛间隔位置（V1，V2）的印象。在另一种布置中，使用四个声源（S1，S2，S3，S4），在两个收听者位置（M1，M2; M3，M4）处创建声音，声音来自一对对称地位于那些听众的声源位置。

9. 发明授权

US11337001B2 Sound reproduction 有权
公开(公告)号：US11337001B2
公开(公告)日：2022-05-17
申请号：US16952623
申请日：2020-11-19
申请人： ADAPTIVE AUDIO LIMITED
发明人： Philip Nelson , Takashi Takeuchi
IPC分类号： H04R25/00 , H04R3/12 , H04R1/20 , H04S7/00 , H04S1/00 , H04R3/04 , H04R5/02
摘要： A signal processor for a sound reproduction system which is arranged to perform processing of a sound recording so as to provide input signals for an array of distributed loudspeakers, such that the sound field generated by the loudspeakers results in cross-talk cancellation in respect of multiple listener positions at substantially all frequencies reproduced by the loudspeakers, and wherein the sound field so generated is an approximation of a sound field produced by an Optimal Source Distribution, OSD.

10. 发明申请

US20040170281A1 Sound recording and reproduction systems 失效
标题翻译：录音和复制系统
公开(公告)号：US20040170281A1
公开(公告)日：2004-09-02
申请号：US10797973
申请日：2004-03-11
申请人： Adaptive Audio Limited
发明人： Philip Arthur Nelson , Ole Kirkeby , Hareo Hamada
IPC分类号： H04R005/00
CPC分类号： H04R5/02 , H04R2205/022 , H04S1/002 , H04S7/302 , H04S2420/01
摘要： Sound recordings are played through a closely-spaced pair of loudspeakers with a predetermined listener position having an included angle of between 6null and 20null, and filter means being employed in creating said sound recordings, the filter means having characteristics such that when the sound recordings are played, the need to provide a virtual imaging filter means at the inputs to the loudspeakers to create virtual sound sources is avoided, the sound recording being such that when played through the loudspeakers a phase difference between vibrations of the two loudspeakers results where the phase difference varies with frequency from low frequencies where the vibrations are substantially out of phase to high frequencies where the vibrations are in phase, the lowest frequency at which the vibrations are in phase being determined approximately by a ringing frequency, f0.
摘要翻译：通过具有预定收听者位置的具有6°和20°之间的夹角的紧密间隔的一对扬声器播放声音记录，以及用于产生所述声音记录的滤波器装置，所述滤波器装置具有这样的特性，使得当声音记录被播放，避免了在扬声器的输入处提供虚拟成像滤波器装置以产生虚拟声源的需要，声音记录使得当通过扬声器播放时，两个扬声器的振动之间的相位差导致相位差随频率而变化，其中振动基本上异相到振动相位相同的高频，振动相位的最低频率大致由振铃频率f0确定。

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