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    Plural-channel sound processing
    2.
    发明授权
    Plural-channel sound processing 失效
    多声道声音处理

    公开(公告)号：US5666425A

    公开(公告)日：1997-09-09

    申请号：US507437

    申请日：1996-03-20

    申请人： Alastair Sibbald ,  Richard David Clemow ,  Adam Philp ,  Fawad Nackvi ,  Adrian Miles Sandford

    发明人： Alastair Sibbald ,  Richard David Clemow ,  Adam Philp ,  Fawad Nackvi ,  Adrian Miles Sandford

    IPC分类号： G10K15/00 ,  H04R5/027 ,  H04S1/00 ,  H04S5/00 ,  H04S7/00 ,  H04R5/00

    CPC分类号： H04S3/002 ,  H04S2400/01 ,  H04S2400/15

    摘要： An artificial head (2) and a plurality of discrete monophonic microphones (8, 10, 12) are used to record one or more sound sources. The signals (14, 16, 18) from each of the microphones (8, 10, 12) then undergo binaural synthesis based upon acoustical properties of a real human head or the artificial head (2), and the signals (4, 6) from the head are equalised using air-to-ear transfer functions of the artificial head (2) or a real head. The resultant signals are combined by summing the individual left (48) and right (50) channels together and then these summed signals (52, 54) are transaural crosstalk compensated (56) to provide final left and right channel signals (58, 60) suitable for recording or playback which provide a three-dimensional sound effect to a listener both via headphones and loudspeakers.

    摘要翻译： PCT No.PCT / GB94 / 00350 Sec。 371日期：1996年3月20日 102（e）1996年3月20日PCT PCT 1994年2月23日PCT公布。 出版物WO94 / 22278 日期1994年9月29日人造头（2）和多个离散单声道麦克风（8,10,12）用于记录一个或多个声源。 来自每个麦克风（8,10,12）的信号（14,16,18）然后基于真实人头或人造头（2）的声学特性进行双耳合成，并且信号（4,6） 使用人造头（2）的空气 - 耳朵传递功能或真正的头部从头部均衡。 所得到的信号通过将各个左（48）和右（50）通道相加在一起而组合，然后这些相加信号（52,54）经过经弦波串扰补偿（56）以提供最终的左和右声道信号（58,60） 适合于通过耳机和扬声器向收听者提供三维声音效果的记录或回放。

    LOUDSPEAKER WITH DEMONSTRATION MODE
    3.
    发明申请
    LOUDSPEAKER WITH DEMONSTRATION MODE 审中-公开
    扬声器与演示模式

    公开(公告)号：US20070032895A1

    公开(公告)日：2007-02-08

    申请号：US11460855

    申请日：2006-07-28

    申请人： Fawad Nackvi ,  Jon Zenor

    发明人： Fawad Nackvi ,  Jon Zenor

    IPC分类号： G06F17/00

    CPC分类号： H04R5/00

    摘要： A loudspeaker, such as a subwoofer, includes demonstration audio file stored in a memory which can be played without connecting the loudspeaker to a separate piece of audio equipment.

    摘要翻译： 诸如重低音扬声器的扬声器包括存储在存储器中的演示音频文件，其可以在不将扬声器连接到单独的音频设备的情况下播放。

    Method of processing a plural channel audio signal
    4.
    发明授权
    Method of processing a plural channel audio signal 有权
    处理多声道音频信号的方法

    公开(公告)号：US06643375B1

    公开(公告)日：2003-11-04

    申请号：US09185711

    申请日：1998-11-04

    申请人： Adam Rupert Philp ,  Alastair Sibbald ,  Richard David Clemow ,  Fawad Nackvi

    发明人： Adam Rupert Philp ,  Alastair Sibbald ,  Richard David Clemow ,  Fawad Nackvi

    IPC分类号： H04R500

    CPC分类号： H04S1/005

    摘要： A method of processing a plural channel audio signal representing a three dimensional sound-field for generation by respective left and right loudspeakers arranged at a given distance from a listener, including: a) choosing a distance between said loudspeakers and said listener; b) determining from this chosen distance an optimal amount of transaural acoustic crosstalk compensation, the optimal amount being a function of the chosen distance; and c) applying said optimal amount of crosstalk compensation to said left and right channels. The optimal transaural crosstalk cancellation is preferably achieved using a near ear response transfer function and a far ear response transfer function which asymptotically approach different values at low frequencies. The method may further include choosing an angle between the left channel loudspeaker and the right channel loudspeaker, and determining from both the chosen angle and the chosen distance an optimal amount of transaural crosstalk compensation.

    摘要翻译： 一种处理表示三维声场的多声道音频信号的方法，所述多声道音频信号用于通过从收听者以给定距离布置的相应左和右扬声器生成，包括：a）选择所述扬声器和所述收听者之间的距离; b）从该选择的距离确定最佳数量的经弦波声学串扰补偿，最佳量是所选距离的函数; 以及c）将所述最佳量的串扰补偿应用于所述左和右声道。 优选的超音速串扰消除优选使用近耳响应传递函数和在低频处渐近地接近不同值的远耳响应传递函数来实现。 该方法还可以包括选择左声道扬声器和右声道扬声器之间的角度，以及从所选择的角度和所选距离两者确定最佳量的经弦波串扰补偿。

    Audio signal correction and calibration for a room environment
    5.
    发明授权
    Audio signal correction and calibration for a room environment 有权
    音频信号校正和校准用于室内环境

    公开(公告)号：US09137619B2

    公开(公告)日：2015-09-15

    申请号：US13710660

    申请日：2012-12-11

    申请人： Fawad Nackvi

    发明人： Fawad Nackvi

    IPC分类号： H03G3/00 ,  H04S7/00

    CPC分类号： H04S7/305 ,  G10L19/022 ,  H04S7/301 ,  H04S7/307 ,  H04S2420/07

    摘要： Disclosed are an apparatus and method of processing an audio signal to optimize audio for a room environment. One example method of operation may include recording the audio signal generated within a particular room environment and processing the audio signal to create an original frequency response based on the audio signal. The method may also include creating at least two iterative filters based on at least two separate frequency ranges of the original frequency response, calculating an error difference between the frequency response modified by the at least two iterative filters and the original frequency response, and applying the error difference to the audio signal.

    摘要翻译： 公开了一种处理音频信号以优化房间环境的音频的装置和方法。 操作的一个示例方法可以包括记录在特定房间环境内生成的音频信号并处理音频信号以基于音频信号创建原始频率响应。 该方法还可以包括基于原始频率响应的至少两个分开的频率范围创建至少两个迭代滤波器，计算由至少两个迭代滤波器修改的频率响应与原始频率响应之间的误差， 与音频信号的误差。

    LOUDSPEAKER
    6.
    发明申请
    LOUDSPEAKER 审中-公开
    喇叭

    公开(公告)号：US20070030979A1

    公开(公告)日：2007-02-08

    申请号：US11460861

    申请日：2006-07-28

    申请人： Fawad Nackvi ,  Jon Zenor

    发明人： Fawad Nackvi ,  Jon Zenor

    IPC分类号： H04R29/00

    CPC分类号： H04R29/00

    摘要： Methods are provided for operating a loudspeaker.

    摘要翻译： 提供用于操作扬声器的方法。

    Method of improving 3D sound reproduction
    9.
    发明授权
    Method of improving 3D sound reproduction 有权
    改善3D声音再现的方法

    公开(公告)号：US07197151B1

    公开(公告)日：2007-03-27

    申请号：US09270768

    申请日：1999-03-17

    申请人： Alastair Sibbald ,  Richard David Clemow ,  Fawad Nackvi

    发明人： Alastair Sibbald ,  Richard David Clemow ,  Fawad Nackvi

    IPC分类号： H04R5/02 ,  H04R5/00

    CPC分类号： H04S1/002 ,  H04S1/005

    摘要： A method of improving 3D sound reproduction is described, in which virtual sound sources to be positioned behind a listener 10 are filtered using an HF-cut filter in order to remove distracting high-frequency components caused by incomplete transaural crosstalk cancellation. Sound sources placed in the rearward hemisphere of reference sphere 30 are filtered by an amount dependent on the position of the sound source in order to provide a smooth transition between the filtered and unfiltered hemispheres. HF-cut filtering is at a maximum when the sound source is placed directly behind the listener, and is progressively reduced as the forward hemisphere is approached. The invention offers an advantage in that virtual sound images may be placed more effectively behind the listener, given improved realism of 3D effects.

    摘要翻译： 描述了一种改善3D声音再现的方法，其中使用HF截止滤波器对要置于收听者10后面的虚拟声源进行滤波，以便消除由不完整的超音速串扰消除引起的分心的高频分量。 放置在参考球30的后半球中的声源被滤波取决于声源的位置的量，以便提供滤光和未过滤的半球之间的平滑过渡。 当声源直接放置在收听者后面时，HF截止滤波处于最大值，并且随着前半球的接近逐渐减小。 本发明提供了一种优点，其中，假设改进的3D效果的真实性，虚拟声音图像可以更有效地放置在听众的后面。

    AUDIO SIGNAL CORRECTION AND CALIBRATION FOR A ROOM ENVIRONMENT
    10.
    发明申请
    AUDIO SIGNAL CORRECTION AND CALIBRATION FOR A ROOM ENVIRONMENT 有权
    音频信号校正和室内环境校准

    公开(公告)号：US20140161280A1

    公开(公告)日：2014-06-12

    申请号：US13710660

    申请日：2012-12-11

    申请人： Fawad Nackvi

    发明人： Fawad Nackvi

    IPC分类号： H03G3/00

    CPC分类号： H04S7/305 ,  G10L19/022 ,  H04S7/301 ,  H04S7/307 ,  H04S2420/07

    摘要： Disclosed are an apparatus and method of processing an audio signal to optimize audio for a room environment. One example method of operation may include recording the audio signal generated within a particular room environment and processing the audio signal to create an original frequency response based on the audio signal. The method may also include creating at least two iterative filters based on at least two separate frequency ranges of the original frequency response, calculating an error difference between the frequency response modified by the at least two iterative filters and the original frequency response, and applying the error difference to the audio signal.

    摘要翻译： 公开了一种处理音频信号以优化房间环境的音频的装置和方法。 操作的一个示例方法可以包括记录在特定房间环境中产生的音频信号并且处理音频信号以基于音频信号创建原始频率响应。 该方法还可以包括基于原始频率响应的至少两个分开的频率范围创建至少两个迭代滤波器，计算由至少两个迭代滤波器修改的频率响应与原始频率响应之间的误差， 与音频信号的误差。