公开(公告)号：WO2007083937A2

公开(公告)日：2007-07-26

申请号：PCT/KR2007/000313

申请日：2007-01-19

Applicant: UNIVERSITY OF SOUTHAMPTON ,  CHO, Youngjae ,  NELSON, Philip, Arthur

Inventor： CHO, Youngjae ,  NELSON, Philip, Arthur

IPC: H04S1/00 ,  H04S5/00 ,  H04R1/10

CPC classification number: H04R5/027 ,  H04S2420/01

公开(公告)号：WO1990000851A1

公开(公告)日：1990-01-25

申请号：PCT/GB1989000773

申请日：1989-07-07

Applicant: ADAPTIVE CONTROL LIMITED ,  NELSON, Philip, Arthur ,  ELLIOTT, Stephen, John ,  STOTHERS, Ian, McGregor

Inventor： ADAPTIVE CONTROL LIMITED

IPC: H04S01/00

CPC classification number: H03G5/005 ,  H03G5/165 ,  H04S1/002 ,  H04S3/00

Abstract: A stereophonic sound reproduction system is aimed at synthesizing at a multiplicity of points (L) in the listening space an auditory effect obtaining at corresponding points (K) in the recording space, to compensate for crosstalk (C21, C12) between the loudspeakers, the acoustic response of the listening space, and imperfections in the frequency response of the speaker channels. Each speaker channel incorporates a digital filter (H) the characteristics of which are ajusted in response to measurements of the reproduced field. The digital filters are provided by an inverse filter matrix (H) of which the matrix elements (Hij) are determined by a least squares technique, applied so as to minimise the sum of the squared errors resulting from the difference between the actual system impulse response and a desired impulse response. A full bandwidth signal is transmitted by a bypass route for combination with the output signal (9) from the filter, the bypass route including a delay means (F).

Abstract translation: 立体声再现系统的目的在于在收听空间中的多个点（L）处合成在记录空间中的相应点（K）获得的听觉效果，以补偿扬声器之间的串扰（C21，C12）， 收听空间的声响应以及扬声器通道频率响应的不完善。 每个扬声器通道包括数字滤波器（H），其特性是响应于再现场的测量而调整的。 数字滤波器由反滤波器矩阵（H）提供，其中矩阵元素（Hij）由最小二乘法确定，以便最小化由实际系统脉冲响应之间的差异导致的平方误差之和 和期望的脉冲响应。 通过旁路路由与来自滤波器的输出信号（9）组合的全带宽信号，旁路路径包括延迟装置（F）。

公开(公告)号：WO0201916A2

公开(公告)日：2002-01-03

申请号：PCT/GB0102759

申请日：2001-06-22

Applicant: ADAPTIVE AUDIO LTD ,  NELSON PHILIP ARTHUR ,  TAKEUCHI TAKASHI

Inventor： NELSON PHILIP ARTHUR ,  TAKEUCHI TAKASHI

IPC: H04R5/02 ,  H04S1/00 ,  H04S3/00

CPC classification number: H04S5/00 ,  H04R1/26 ,  H04R2205/024 ,  H04S3/002 ,  H04S2400/05 ,  H04S2420/01

Abstract: A sound reproduction system has pairs of sound emitters that subtend different angles THETA , 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 filter means (Hh, H1). The operational span-frequency range of the pairs of sound emitters is determined by an equation (I) where the transducer span THETA is the angle subtended at the listener by a pair of transducers, where O

Abstract translation: 声音再现系统具有成对的声发射器，它们在收听者位置处对角不同的角度THETA（跨度角）。 发声器对被布置成由反向滤波器装置（Hh，H1）输出的信号的不同频带激发。 发声器对的操作跨度频率范围由等式（I）确定，其中换能器跨度THETA是由一对换能器对准在收听者处的角度，其中O

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

Applicant: ADAPTIVE AUDIO LIMITED ,  ORDUÑA-BUSTAMANTE, Felipe ,  KIRKEBY, Ole ,  HAMADA, Hareo ,  NELSON, Philip, Arthur

Inventor： ADAPTIVE AUDIO LIMITED

IPC: H04S01/00

CPC classification number: H04S1/002 ,  H04S1/005 ,  H04S1/007 ,  H04S3/002 ,  H04S2420/01

Abstract: 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.

Abstract translation: 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。

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

Applicant: ADAPTIVE AUDIO LIMITED ,  NELSON, Philip, Arthur

Inventor： ADAPTIVE AUDIO LIMITED ,  NELSON, Philip, Arthur

IPC: H04S03/02

CPC classification number: H04S3/02

Abstract: 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.

Abstract translation: 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。

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

Applicant: ADAPTIVE AUDIO LIMITED ,  TAKEUCHI, Takashi ,  NELSON, Philip, Arthur

Inventor： TAKEUCHI, Takashi ,  NELSON, Philip, Arthur

IPC: H04S1/00 ,  H04S3/00 ,  H04S5/00 ,  H04R1/26

CPC classification number: H04S5/00 ,  H04R1/26 ,  H04R2205/024 ,  H04S3/002 ,  H04S2400/05 ,  H04S2420/01

Abstract: 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.

Abstract translation: 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。

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

Applicant: ADAPTIVE AUDIO LIMITED ,  NELSON, Philip, Arthur ,  ORDUÑA-BUSTAMANTE, Felipe ,  HAMADA, Hareo

Inventor： ADAPTIVE AUDIO LIMITED

IPC: H04S07/00

CPC classification number: H03H21/0012 ,  H04R2205/024 ,  H04S1/002 ,  H04S7/302

Abstract: 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.

Abstract translation: 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。

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

Applicant: ADAPTIVE AUDIO LIMITED ,  NELSON, Philip, Arthur ,  TAKEUCHI, Takashi

Inventor： NELSON, Philip, Arthur ,  TAKEUCHI, Takashi

IPC: H04S1/00

CPC classification number: H04S5/00 ,  H04R1/26 ,  H04R2205/024 ,  H04S3/002 ,  H04S2400/05 ,  H04S2420/01

Abstract: 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°.

Abstract translation: 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。

公开(公告)号：WO1988002912A1

公开(公告)日：1988-04-21

申请号：PCT/GB1987000706

申请日：1987-10-06

Applicant: ADAPTIVE CONTROL LIMITED ,  ELLIOTT, Stephen, John ,  NELSON, Philip, Arthur ,  STOTHERS, Ian, McGregor

Inventor： ADAPTIVE CONTROL LIMITED

IPC: G10K11/16

CPC classification number: G10K11/178 ,  G10K2210/1282 ,  G10K2210/30232 ,  G10K2210/3032 ,  G10K2210/3046 ,  G10K2210/3048 ,  G10K2210/3049 ,  G10K2210/3212

Abstract: To reduce noise inside a motor car passenger compartment, two loudspeakers (371, 372) are driven by signals derived from a reference signal x(n) by adaptive filtering carried out by a programmed microprocessor and memory unit (36) which adapts the filtering in dependence on error signals el(n) from four microphones (421, 422, 423 and 424) distributed in the passenger compartment. Reference filtering coefficients are initially determined by analysis of finite impulse responses when white noise is acoustically coupled from the loudspeakers (37) to the microphones (42), a white noise generator (48) being coupled to the unit (36). The reference signal x(n) is restricted to one or more selected harmonics or subharmonics of the fundamental noise frequency by a filter (34) which tracks the selected frequency. The selected frequency may be obtained from a coil (31) in the ignition circuit of the vehicle.

Abstract translation: 为了减少机动车乘客舱内的噪音，通过由编程的微处理器和存储器单元（36）执行的自适应滤波，由参考信号x（n）导出的信号驱动两个扬声器（371,372），所述微处理器和存储单元（36） 依赖于分配在乘客舱中的四个麦克风（421,422,423和424）的误差信号el（n）。 参考滤波系数最初通过分析白噪声从扬声器（37）与麦克风（42）声学耦合的有限脉冲响应来确定，白噪声发生器（48）耦合到单元（36）。 参考信号x（n）通过跟踪所选择的频率的滤波器（34）被限制为基本噪声频率的一个或多个选定的谐波或次谐波。 选择的频率可以从车辆的点火电路中的线圈（31）获得。

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

Applicant: ADAPTIVE AUDIO LIMITED ,  NELSON, Philip, Arthur ,  TAKEUCHI, Takashi

Inventor： NELSON, Philip, Arthur ,  TAKEUCHI, Takashi

IPC: H04S1/00

Abstract: 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°.