公开(公告)号：WO2012004057A1

公开(公告)日：2012-01-12

申请号：PCT/EP2011/058973

申请日：2011-05-31

Applicant: BANG & OLUFSEN A/S ,  PEDERSEN, Jan Abildgaard

Inventor： PEDERSEN, Jan Abildgaard

IPC: H04R5/04 ,  H04R29/00 ,  H04S7/00

CPC classification number: G06F17/00 ,  H04R5/04 ,  H04R29/008 ,  H04S7/40

Abstract: A method and apparatus for having a user select from simultaneously provided audio tracks which are provided from different directions to the user. One of the tracks is provided from in front of the user and with a higher intensity than another track which is provided from a direction more to the side of the user. When the other track is selected, it is provided from in front of the user with a higher intensity, and a third track is now provided from the side of the user and at a lower intensity.

Abstract translation: 一种用于使用户从同时提供的从用户的不同方向提供的音频轨道进行选择的方法和装置。 轨道之一是从用户的前方提供的，并且具有比另一个轨道更高的强度，该轨道是从更靠近用户侧面的方向提供的。 当选择另一个轨道时，从用户的前方提供更高的强度，并且现在从用户的侧面以较低的强度提供第三轨道。

公开(公告)号：WO2011116839A1

公开(公告)日：2011-09-29

申请号：PCT/EP2010/064369

申请日：2010-09-28

Applicant: BANG & OLUFSEN A/S ,  HEGARTY, Patrick James ,  PEDERSEN, Jan Abildgaard

Inventor： HEGARTY, Patrick James ,  PEDERSEN, Jan Abildgaard

IPC: H04S5/00

CPC classification number: H04S5/00 ,  H04R2499/13 ,  H04S3/00 ,  H04S7/303 ,  H04S2400/05 ,  H04S2400/09 ,  H04S2400/11 ,  H04S2420/01 ,  H04S2420/05

Abstract: The present invention relates to a method for selecting auditory signal components for reproduction by means of one or more supplementary sound reproducing transducers, such as loudspeakers, placed between a pair of primary sound reproducing transducers, such as left and right loudspeakers in a stereophonic loudspeaker setup or adjacent loudspeakers in a surround sound loudspeaker setup, the method comprising the steps of (i) specifying an azimuth angle range within which one of said supplementary sound reproducing transducers is located or is to be located and a listening direction; (Ii) based on said azimuth angle range and said listening direction, determining left and right interaural level difference limits and left and right interaural time difference limits, respectively; (iii) providing a pair of input signals for said pair of primary sound reproducing transducers; (iv) pre-processing each of said input signals, thereby providing a pair of pre-processed input signals; (v) determining interaural level difference and interaural time difference as a function of frequency between said pre-processed signals; and (vi) providing those signal components of said input signals that have interauial level differences and interaural time differences in the interval between said left and right interaural level difference limits, and left and right interaural time difference limits, respectively, to the corresponding supplementary sound reproducing transducer. The invention also relates to a device for carrying out the above method and systems of such devices.

Abstract translation: 本发明涉及一种用于通过一个或多个辅助声音再现换能器（例如扬声器）来选择用于再现的听觉信号分量的方法，放大器放置在一对主声音再现换能器之间，例如立体声扬声器设置中的左和右扬声器 或相邻的扬声器，所述方法包括以下步骤：（i）指定所述辅助声音再现换能器中的一个位于或要被定位的方位角范围和倾听方向; （Ii），基于所述方位角范围和所述收听方向，分别确定左右眶内水平差值限制和左右昼间时差限制; （iii）为所述一对主声音再现换能器提供一对输入信号; （iv）预处理每个所述输入信号，从而提供一对预处理的输入信号; （v）确定作为所述预处理信号之间的频率的函数的耳间水平差和耳间时间差; 以及（vi）将所述输入信号的所述信号分量提供给所述左和右心房间水平差值极限之间的间隔水平差和耳间时间差，以及左和右耳间时间差极限到相应的辅助声音 再现传感器。 本发明还涉及一种用于执行上述方法和装置的系统的装置。

公开(公告)号：WO2007076863A1

公开(公告)日：2007-07-12

申请号：PCT/DK2006/000724

申请日：2006-12-19

Applicant: SLH AUDIO A/S ,  PEDERSEN, Jan Abildgaard

Inventor： PEDERSEN, Jan Abildgaard

IPC: H04S7/00 ,  H04S3/00

CPC classification number: H04S3/00 ,  H04S7/00

Abstract: A method and a system for equalizing one or more loudspeaker(s), e.g. a hi-fi system, positioned in a room in order to compensate sound reproduction from the loudspeaker for an influence of the room. The method includes measuring a listening position transfer function (L) from electrical input of the loudspeaker (L1) to a sound pressure at a listening position (LP) in the room. A global transfer function (G) representing a spatial average of sound pressure level in the room generated by the loudspeaker (L1) is determined. This global transfer function (G) can either be determined as an average of two or more transfer functions measured in field points scattered across the room or it can be calculated based on an acoustic power output measured from the loudspeaker (L1) together with data regarding sound absorption properties of the room. An upper gain limit (UGL) as a function of frequency is then determined based on an inverse of the global transfer function (G). An equalizing filter (F) is then determined based on an inverse of the listening position transfer function (L), but with its gain being limited to a maximum gain in accordance with the upper gain limit (UGL). Finally, the loudspeaker (L1) is equalized with the equalizing filter (F), the filter (F) being implemented such as a minimum phase approximation by an FIR or an HR filter. Preferably, a lower gain limit (LGL) as a function of frequency is also determined as an inverse of the global transfer function (G), wherein a gain of the equalizing filter (F) is limited to a minimum gain in accordance with the lower gain limit (LGL). By use of the upper and lower gain limits (UGL, LGL) it is possible to implement a system capable of automatically designing the equalizing filter (F) with only simple tasks to perform for an operator of the system.

Abstract translation: 一种Stract A方法和用于均衡一个或多个扬声器的系统，例如， 高保真系统，定位在房间中，以便补偿来自扬声器的声音再现对于房间的影响。 该方法包括从扬声器（L1）的电输入到室内听音位置（LP）的声压测量收听位置传递函数（L）。 确定表示由扬声器（L1）生成的房间中的声压级的空间平均的全局传递函数（G）。 该全局传递函数（G）可以被确定为分散在房间中的场点中测量的两个或更多个传递函数的平均值，或者可以基于从扬声器（L1）测量的声功率输出以及关于 房间的吸音性能。 然后，基于全局传递函数（G）的倒数来确定作为频率的函数的上限增益限制（UGL）。 然后，基于收听位置传递函数（L）的倒数确定均衡滤波器（F），但是根据上限增益限制（UGL）将其增益限制为最大增益。 最后，扬声器（L1）与均衡滤波器（F）相等，滤波器（F）被实现为通过FIR或HR滤波器的最小相位逼近。 优选地，作为频率的函数的较低增益极限（LGL）也被确定为全局传递函数（G）的倒数，其中均衡滤波器（F）的增益被限制为根据较低的 增益限制（LGL）。 通过使用上限和下限增益限制（UGL，LGL），可以实现一个能够自动设计均衡滤波器（F）的系统，只需要为系统的操作者执行简单的任务即可。

公开(公告)号：WO2006076926A2

公开(公告)日：2006-07-27

申请号：PCT/DK2006/000234

申请日：2006-04-28

Applicant: AM3D A/S ,  PEDERSEN, Jan, Abildgaard

Inventor： PEDERSEN, Jan, Abildgaard

IPC: H04S1/00

CPC classification number: H04S1/002 ,  H04S2400/01 ,  H04S2420/01

Abstract: Audio processor for processing a set of input audio channels and generate a corresponding processed set of signals adapted for playback via a set of narrow-spaced loudspeakers with the purpose of providing a spatial image widening effect. The audio processor includes a cross talk canceller active only in a pre-selected frequency range, e.g. 1.5-18 kHz, and substantially in-active outside this frequency range. In addition, the audio processor includes applying substantially similar frequency weightings to the two input audio channels within the mentioned pre-selected frequency range. This frequency weighting is selected such that the processed set of signals provides a listener with a perceived timbre being substantially the same as a perceived timbre provided by the input set of audio signals. The frequency weighting is preferably based on a magnitude of an ipsi-lateral or a contra-lateral transfer function, or based on a square root of sum of squares of magnitudes of ipsi-lateral and contral-lateral transfer functions. The audio processor is advantageous since it provides a high sound quality without severe tonal coloration and with a stable spatial widening effect tolerant to listener head movements in spite of very narrow-spaced loudspeakers, such as with a listening angle of 4° or less, e.g. in a mobile phone or other handheld devices. In addition, the processor is advantageous in that it provides a high reproduction quality of both timbre and spatial aspects for normal stereo signals as well as binaural signals, including 3D spatial content in case of binaural input signals, without the need to adapt the processing to the actual input signal type.

Abstract translation: 用于处理一组输入音频通道的音频处理器，并且为了提供空间图像加宽效果，生成适合于通过一组窄间隔扬声器重放的对应的经处理的信号组。 音频处理器包括仅在预选频率范围内有效的串扰消除器，例如， 1.5-18 kHz，并且在该频率范围外基本上处于活动状态。 此外，音频处理器包括在所述预选频率范围内对两个输入音频通道施加基本相似的频率加权。 选择该频率加权使得经处理的信号集提供具有感知音色的听众，其基本上与由输入的音频信号组提供的感知音色相同。 频率加权优选地基于ipsi-lateral或对侧传递函数的大小，或者基于ipsi-侧向和对侧 - 转移函数的量值的平方和的平方根。 音频处理器是有利的，因为它提供了高音质，而没有严重的色调着色，并且具有容忍收听者头部运动的稳定的空间扩大效果，尽管具有非常窄的间隔的扬声器，例如具有4°或更小的倾角，例如4°或更小的倾角。 在手机或其他手持设备中。 此外，处理器的优点在于，它为正常立体声信号以及双耳信号（包括双耳输入信号的情况下的3D空间内容）提供音质和空间方面的高再现质量，而不需要使处理适应 实际输入信号类型。

公开(公告)号：WO2012004058A1

公开(公告)日：2012-01-12

申请号：PCT/EP2011/058974

申请日：2011-05-31

Applicant: BANG & OLUFSEN A/S ,  PEDERSEN, Jan Abildgaard ,  LYDOLF, Morten

Inventor： PEDERSEN, Jan Abildgaard ,  LYDOLF, Morten

IPC: H04S7/00

CPC classification number: H04R3/12 ,  H04S7/30 ,  H04S2420/07

Abstract: A method and a system for adapting the timbre of sound output at power-up/down of a media player or stereo, where the timbre adaptation is a limitation of the bandwidth of the signal or sound, which bandwidth limitation is reduced over time to eventually provide no filtering at all.

Abstract translation: 一种方法和系统，用于在媒体播放器或立体声上电/下转时调整声音输出的音色，其中音色适配是信号或声音的带宽的限制，哪个带宽限制随时间而减少到最终 根本不提供过滤。

公开(公告)号：WO2012003894A1

公开(公告)日：2012-01-12

申请号：PCT/EP2010/068934

申请日：2010-12-06

Applicant: BANG & OLUFSEN A/S ,  PEDERSEN, Jan Abildgaard

Inventor： PEDERSEN, Jan Abildgaard

IPC: H04S7/00

CPC classification number: H03G5/165 ,  H04R3/04 ,  H04R29/001 ,  H04R2499/13 ,  H04S7/30 ,  H04S7/301 ,  H04S7/302 ,  H04S7/40

Abstract: The present invention relates to a method for controlling one or more loudspeakers provided in an enclosure, such as a listening room or an automobile cabin, the method comprising the steps of: (i) providing said one or more loudspeakers (2, 3, 4) with an audio input signal (5) whereby a sound field (10) is generated in the enclosure (1), and determining the corresponding acoustic power output APO(f) emitted from the one or more loudspeakers (2, 3, 4) into said enclosure (1); (ii) determining an acoustic contribution or room gain RG(f) of the enclosure (1) to the generated sound field (10); (iii) optionally determining a listening position interface LPI(f) that characterises a listener's ability to receive sound energy from a sound field at the specific place in the sound Field, in which he is located; and (iv) determining a filter characteristic as a function of the acoustic power output, the acoustic contribution or room gain RG(f) of the enclosure to the sound field in the enclosure and optionally the listening position interface between the sound field at the listening position and a listener placed at this position. The invention furthermore relates to a system for carrying out the above method and specifically to the use of the method and system for obtaining optimal audio reproduction in confined spaces such as automobile cabins.

Abstract translation: 本发明涉及一种用于控制设置在诸如听音室或汽车舱的外壳中的一个或多个扬声器的方法，所述方法包括以下步骤：（i）提供所述一个或多个扬声器（2,3,4） ），其中在所述机壳（1）中产生声场（10），并且确定从所述一个或多个扬声器（2,3,4）发射的对应声功率输出APO（f） 进入所述外壳（1）; （ii）确定所述外壳（1）对所产生的声场（10）的声学贡献或房间增益RG（f）; （iii）可选地确定收听位置界面LPI（f），其表征听众从他所在的声场中的特定地点的声场接收声能的能力; 以及（iv）确定作为声功率输出的函数的滤波器特性，所述外壳对所述外壳中的声场的声学贡献或房间增益RG（f）以及可选地在所述收听期间的声场之间的收听位置界面 位置和一个听众放在这个位置。 本发明还涉及一种用于执行上述方法的系统，具体涉及使用方法和系统来获得诸如汽车舱的密闭空间中的最佳音频再现。

公开(公告)号：WO2009143852A1

公开(公告)日：2009-12-03

申请号：PCT/DK2009/050118

申请日：2009-05-26

Applicant: SLH Audio A/S ,  Pedersen, Jan Abildgaard ,  Mortensen, Henrik Green

Inventor： Pedersen, Jan Abildgaard ,  Mortensen, Henrik Green

IPC: H04R1/34

CPC classification number: H04R1/2853 ,  H04R5/02 ,  H04R2205/022

Abstract: Aloudspeakerbased on a dipole element (DE) with at least one diaphragm arranged to generate an acoustic dipole signal according to an electric signal, e.g. a dedicated dipole driver such as an Air Motion Transformer or a combination of two monopole drivers, e.g. dome tweeters,mounted back to back close together. An acoustic waveguide (WG) is arranged in relation to the dipole element (DE) such that a surface (S) of the acoustic waveguide (WG) is close to the at least one diaphragm of the dipole element (DE). The acoustic waveguide (WG) extends in both directions of a main axis (MA) of the dipole element (DE), thus serving to guide the acoustic dipole signals away from the dipole element (DE). Preferably, the surface (S1, S2) of the acoustic waveguide (WG) has ageneral tilt of less than 30° in relation to the main axis (MA). Thereby, a diffuse sound field is provided with only a limited requirement for housing the acoustic waveguide (WG) in the depth dimension. A smooth sound radiation for directions away from on-axis is provided, and sound radiationon-axis is highly suppressed. With these properties the loudspeaker is suited as back or surround loudspeaker in surround sound systemsto cover midrange and/or upper audio frequencies.

Abstract translation: 扬声器基于偶极子元件（DE），具有布置成根据电信号产生声学偶极信号的至少一个光阑，例如， 专用偶极驱动器，例如气动变压器或两个单极驱动器的组合，例如。 圆顶高音喇叭，背靠背放在一起。 相对于偶极元件（DE）布置声波导（WG），使得声波导（WG）的表面（S）接近偶极子元件（DE）的至少一个隔膜。 声波导（WG）在偶极子元件（DE）的主轴（MA）的两个方向上延伸，从而用于引导声偶极子信号远离偶极子元件（DE）。 优选地，声波导（WG）的表面（S1，S2）相对于主轴线（MA）具有小于30°的总倾斜度。 从而，扩散声场仅提供在深度尺寸上容纳声波导（WG）的有限要求。 提供了远离轴上方向的平滑声辐射，并且高度抑制声辐射轴。 使用这些属性，扬声器适用于环绕声系统中的背部或环绕扬声器，覆盖中音和/或高音频。

公开(公告)号：WO2011042019A1

公开(公告)日：2011-04-14

申请号：PCT/DK2010/000132

申请日：2010-10-07

Applicant: SL AUDIO A/S ,  MOSGAARD, Jes ,  MORTENSEN, Henrik, Green ,  PEDERSEN, Jan, Abildgaard

Inventor： MOSGAARD, Jes ,  MORTENSEN, Henrik, Green ,  PEDERSEN, Jan, Abildgaard

IPC: H04R1/34

CPC classification number: H04R1/345

Abstract: The invention relates to a way to avoid the strong reflection of the wall behind the loudspeaker is to place an acoustic reflector behind the loudspeaker driver to redirect the sound away from the wall. However, the redirected sound should also be directed away from the listening position. A direction approximately perpendicular to the wall behind the loudspeaker seems to be optimal. This can e.g. be achieved by using a triangular sound reflector as depicted on the accompanying drawings. Other shapes may be applied as well.

Abstract translation: 本发明涉及一种避免在扬声器后面的强烈反射的方法是将声反射器放置在扬声器驱动器后面以将声音重定向远离墙壁。 然而，重定向的声音也应该被引导离开聆听位置。 大致垂直于扬声器后面的墙壁的方向似乎是最佳的。 这可以例如 通过使用如附图所示的三角形声反射器来实现。 也可以应用其他形状。

公开(公告)号：WO2007076863A8

公开(公告)日：2008-12-24

申请号：PCT/DK2006000724

申请日：2006-12-19

Applicant: SLH AUDIO AS ,  PEDERSEN JAN ABILDGAARD

Inventor： PEDERSEN JAN ABILDGAARD

IPC: H04S7/00 ,  H04S3/00

CPC classification number: H04S3/00 ,  H04S7/00

Abstract: A method and a system for equalizing one or more loudspeaker(s), e.g. a hi-fi system, positioned in a room in order to compensate sound reproduction from the loudspeaker for an influence of the room. The method includes measuring a listening position transfer function (L) from electrical input of the loudspeaker (L1) to a sound pressure at a listening position (LP) in the room. A global transfer function (G) representing a spatial average of sound pressure level in the room generated by the loudspeaker (L1) is determined. This global transfer function (G) can either be determined as an average of two or more transfer functions measured in field points scattered across the room or it can be calculated based on an acoustic power output measured from the loudspeaker (L1) together with data regarding sound absorption properties of the room. An upper gain limit (UGL) as a function of frequency is then determined based on an inverse of the global transfer function (G). An equalizing filter (F) is then determined based on an inverse of the listening position transfer function (L), but with its gain being limited to a maximum gain in accordance with the upper gain limit (UGL). Finally, the loudspeaker (L1) is equalized with the equalizing filter (F), the filter (F) being implemented such as a minimum phase approximation by an FIR or an HR filter. Preferably, a lower gain limit (LGL) as a function of frequency is also determined as an inverse of the global transfer function (G), wherein a gain of the equalizing filter (F) is limited to a minimum gain in accordance with the lower gain limit (LGL). By use of the upper and lower gain limits (UGL, LGL) it is possible to implement a system capable of automatically designing the equalizing filter (F) with only simple tasks to perform for an operator of the system.

Abstract translation: 一种用于均衡一个或多个扬声器的方法和系统，例如， 高保真系统，定位在房间中，以便补偿来自扬声器的声音再现对于房间的影响。 该方法包括从扬声器（L1）的电输入到室内听音位置（LP）的声压测量收听位置传递函数（L）。 确定表示由扬声器（L1）生成的房间中的声压级的空间平均的全局传递函数（G）。 该全局传递函数（G）可以被确定为分散在房间中的场点中测量的两个或更多个传递函数的平均值，或者可以基于从扬声器（L1）测量的声功率输出以及关于 房间的吸音性能。 然后，基于全局传递函数（G）的倒数来确定作为频率的函数的上限增益限制（UGL）。 然后，基于收听位置传递函数（L）的倒数确定均衡滤波器（F），但是根据上限增益限制（UGL）将其增益限制为最大增益。 最后，扬声器（L1）与均衡滤波器（F）相等，滤波器（F）被实现为通过FIR或HR滤波器的最小相位逼近。 优选地，作为频率的函数的较低增益极限（LGL）也被确定为全局传递函数（G）的倒数，其中均衡滤波器（F）的增益被限制为根据较低的 增益限制（LGL）。 通过使用上限和下限增益限制（UGL，LGL），可以实现一个能够自动设计均衡滤波器（F）的系统，只需要为系统的操作者执行简单的任务即可。

公开(公告)号：WO2006076926A3

公开(公告)日：2006-10-12

申请号：PCT/DK2006000234

申请日：2006-04-28

Applicant: AM3D AS ,  PEDERSEN JAN ABILDGAARD

Inventor： PEDERSEN JAN ABILDGAARD

IPC: H04S1/00

CPC classification number: H04S1/002 ,  H04S2400/01 ,  H04S2420/01

Abstract: Audio processor for processing a set of input audio channels and generate a corresponding processed set of signals adapted for playback via a set of narrow-spaced loudspeakers with the purpose of providing a spatial image widening effect. The audio processor includes a cross talk canceller active only in a pre-selected frequency range, e.g. 1.5-18 kHz, and substantially in-active outside this frequency range. In addition, the audio processor includes applying substantially similar frequency weightings to the two input audio channels within the mentioned pre-selected frequency range. This frequency weighting is selected such that the processed set of signals provides a listener with a perceived timbre being substantially the same as a perceived timbre provided by the input set of audio signals. The frequency weighting is preferably based on a magnitude of an ipsi-lateral or a contra-lateral transfer function, or based on a square root of sum of squares of magnitudes of ipsi-lateral and contral-lateral transfer functions. The audio processor is advantageous since it provides a high sound quality without severe tonal coloration and with a stable spatial widening effect tolerant to listener head movements in spite of very narrow-spaced loudspeakers, such as with a listening angle of 4° or less, e.g. in a mobile phone or other handheld devices. In addition, the processor is advantageous in that it provides a high reproduction quality of both timbre and spatial aspects for normal stereo signals as well as binaural signals, including 3D spatial content in case of binaural input signals, without the need to adapt the processing to the actual input signal type.

Abstract translation: 音频处理器，用于处理一组输入音频声道并产生适合于通过一组窄间距扬声器重放的相应处理信号集合，目的是提供空间图像加宽效果。 音频处理器包括仅在预选频率范围内激活的串音消除器，例如， 1.5-18kHz，并且在该频率范围之外基本处于非活动状态。 另外，音频处理器包括在所提及的预选频率范围内对两个输入音频声道施加基本相似的频率加权。 该频率加权被选择为使得经处理的一组信号向收听者提供与由输入音频信号集提供的感知音质基本相同的感知音质。 频率加权优选地基于同侧或对侧传递函数的幅度或基于同侧和对侧 - 横向传递函数的平方和的平方根。 音频处理器是有利的，因为它提供了高音质而没有严重的音调着色，并且具有对听众头部运动的宽容的稳定空间，尽管是非常窄间距的扬声器，例如具有4°或更小的收听角度， 在手机或其他手持设备中。 此外，处理器的优点在于，它为正常的立体声信号以及双耳信号（包括在双耳输入信号的情况下的3D空间内容）提供了音质和空间方面的高重放质量，而无需使处理适应于 实际的输入信号类型。