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1. 发明授权

US06421446B1 Apparatus for creating 3D audio imaging over headphones using binaural synthesis including elevation 失效
标题翻译：用于使用包括海拔的双耳合成在耳机上创建3D音频成像的装置
公开(公告)号：US06421446B1
公开(公告)日：2002-07-16
申请号：US09210036
申请日：1998-12-11
申请人： Terry Cashion , Simon Williams
发明人： Terry Cashion , Simon Williams
IPC分类号： H04R500
CPC分类号： H04S1/005
摘要： The apparent location of sound signals as perceived by a person listening to the sound signals over headphones can be positioned or moved in azimuth, elevation and range by a range control block and a location control block. Several range control blocks and location control blocks can be provided depending on the number of input sound signals to be positioned or moved. All of the range and location control is provided by the range control blocks and location control blocks so that the resultant signals require only a fixed number of filters regardless of the number of input audio signals to provide the signal processing. Such signal processing resulting in accurate positioning and moving of the sound source is accomplished using front and back early reflection filters, left and right reverberation filters, front and back azimuth placement filters having a head related transfer function, and up and down elevation placement filters.
摘要翻译：通过耳机听到声音信号的人感觉到的声音信号的明显位置可以通过范围控制块和位置控制块在方位角，高程和范围内定位或移动。可以根据待定位或移动的输入声音信号的数量来提供多个范围控制块和位置控制块。所有的范围和位置控制由范围控制块和位置控制块提供，使得所得到的信号仅需要固定数量的滤波器，而不管输入音频信号的数量如何以提供信号处理。使用前后反射滤波器，左和右混响滤波器，具有头部相关传递函数的前后方位放置滤波器以及上下放大放大滤波器来实现导致声源的精确定位和移动的这种信号处理。

2. 发明授权

US5371799A Stereo headphone sound source localization system 失效
标题翻译：立体声耳机声源定位系统
公开(公告)号：US5371799A
公开(公告)日：1994-12-06
申请号：US69870
申请日：1993-06-01
申请人： Danny D. Lowe , Terry Cashion , Simon Williams
发明人： Danny D. Lowe , Terry Cashion , Simon Williams
IPC分类号： H04S1/00 , H04S7/00 , H04R25/00
CPC分类号： H04S1/005 , H04S2420/01 , H04S7/305
摘要： A system for processing an audio signal for playback over headphones in which the apparent sound source is located outside of the head of the listener processes the input signal as if it were made up of a direct wave portion, an early reflections portion, and a reverberations portion. The direct wave portion of the signal is processed in filters whose filter coefficients are chosen based upon the desired azimuth of the virtual sound source location. The early reflection portion is passed through a bank of filters connected in parallel whose coefficients are chosen based on each reflection azimuth. The outputs of these filters are passed through scalars to adjust the amplitude to simulate a desired range of the virtual sound source. The reverberation portion is processed without any sound source location information, using a random number generator, for example, and the output is attenuated in an exponential attenuator to be faded out. The outputs of the scalars and attenuators are then all summed to produce left and right headphone signals for playback over the respective headphone transducers.
摘要翻译：用于处理用于通过耳机播放的音频信号的系统，其中表观声源位于收听者的头部外部处理输入信号，如同它由直接波段，早期反射部分和混响组成一部分。基于虚拟声源位置的期望方位来选择滤波器系数的滤波器对信号的直接波部分进行处理。早期反射部分通过并联连接的一组滤波器，其系数基于每个反射方位来选择。这些滤波器的输出通过标量来调节振幅以模拟虚拟声源的期望范围。例如，使用随机数发生器来处理混响部分而没有任何声源位置信息，并且输出在指数衰减器中被衰减以被淡出。然后将标量和衰减器的输出相加以产生用于在相应的耳机换能器上重放的左和右耳机信号。

3. 发明授权

US06198826B1 Qsound surround synthesis from stereo 失效
标题翻译： Qsound立体声环绕合成
公开(公告)号：US06198826B1
公开(公告)日：2001-03-06
申请号：US09058047
申请日：1998-04-09
申请人： Brian Cowieson , John Arthur , Terry Cashion
发明人： Brian Cowieson , John Arthur , Terry Cashion
IPC分类号： H04R500
CPC分类号： H04S3/00 , H04R2420/03 , H04S3/002 , H04S5/00 , H04S2400/01
摘要： The inventive mechanism produces multiple output signals from a two-channel stereo input signal. The mechanism produces a first pair of output signals which retain the monaural information in the stereo input signal. The first pair of signals each comprise a combination of one of the input channels and filtered signal produced from a difference of both input channels. The mechanism produces a second pair of output signals which lacks the monaural information. The second pair of output signals each comprise a combination of one of the input channels and an inverse filtered signal produced from a difference of both input channels. Q-filters are used to provide the various filtered signals.
摘要翻译：本发明的机构从双声道立体声输入信号产生多个输出信号。该机构产生保持立体声输入信号中的单声道信息的第一对输出信号。第一对信号各自包括输入通道中的一个和由两个输入通道的差产生的滤波信号的组合。该机制产生缺少单声道信息的第二对输出信号。第二对输出信号各自包括输入通道中的一个和由两个输入通道的差产生的反滤波信号的组合。 Q滤波器用于提供各种滤波信号。

4. 发明授权

US06195434B1 Apparatus for creating 3D audio imaging over headphones using binaural synthesis 失效
标题翻译：用于使用双耳合成在耳机上创建3D音频成像的装置
公开(公告)号：US06195434B1
公开(公告)日：2001-02-27
申请号：US09151998
申请日：1998-09-11
申请人： Terry Cashion , Simon Williams
发明人： Terry Cashion , Simon Williams
IPC分类号： H04R500
CPC分类号： H04S1/005 , H04S2400/11
摘要： An apparent location of a sound source is controlled in azimuth and range to a listener of the sound using headphones by a range control block that has variable amplitude scalers and a time delay and by an azimuth control block that also has variable amplitude scalers and time delays. An input audio signal is fed in to the range control block and the values of the scalers and the taps on the delay buffers are read out of look-up tables in a controller that is addressed by an azimuth index value corresponding to any location on a circle surrounding the headphone wearer. Several range control blocks and azimuth control blocks can be provided depending on the number of input audio signals to be located. All of the range and azimuth control is provided by the range control blocks and azimuth control blocks so that the resultant signals require only a fixed number of filters regardless of the number of input audio signals to provide the signal processing. Such signal processing is accomplished using front and back early reflection filters, left and right reverberation filters, and front and back azimuth filters having a head related transfer function.
摘要翻译：声源的明显位置由具有可变幅度缩放器和时间延迟的范围控制块以及还具有可变幅度缩放器和时间延迟的方位控制块的耳机控制在使用耳机的声音收听者的方位角和范围内。输入音频信号被馈送到范围控制块，并且延迟缓冲器中的缩放器和抽头的值从控制器中的查找表中读出，该控制器被对应于对应于围绕耳机佩戴者的圈子。可以根据要定位的输入音频信号的数量来提供若干范围控制块和方位控制块。所有范围和方位控制由范围控制块和方位控制块提供，使得所得到的信号仅需要固定数量的滤波器，而不管输入音频信号的数量如何，以提供信号处理。这样的信号处理使用前和后的早期反射滤波器，左和右混响滤波器以及具有磁头相关传递函数的前后方位滤波器来实现。

5. 发明授权

US5809149A Apparatus for creating 3D audio imaging over headphones using binaural synthesis 失效
标题翻译：用于使用双耳合成在耳机上创建3D音频成像的装置
公开(公告)号：US5809149A
公开(公告)日：1998-09-15
申请号：US719631
申请日：1996-09-25
申请人： Terry Cashion , Simon Williams
发明人： Terry Cashion , Simon Williams
IPC分类号： H04S1/00 , H04S5/00
CPC分类号： H04S1/005 , H04S2400/11
摘要： An apparent location of a sound source is controlled in azimuth and range to a listener of the sound using headphones by a range control block that has variable amplitude scalers and a time delay and by an azimuth control block that also has variable amplitude scalers and time delays. An input audio signal is fed in to the range control block and the values of the scalers and the taps on the delay buffers are read out of look-up tables in a controller that is addressed by an azimuth index value corresponding to any location on a circle surrounding the headphone wearer. Several range control blocks and azimuth control blocks can be provided depending on the number of input audio signals to be located. All of the range and azimuth control is provided by the range control blocks and azimuth control blocks so that the resultant signals require only a fixed number of filters regardless of the number of input audio signals to provide the signal processing. Such signal processing is accomplished using front and back early reflection filters, left and right reverberation filters, and front and back azimuth filters having a head related transfer function.
摘要翻译：声源的明显位置由具有可变幅度缩放器和时间延迟的范围控制块以及还具有可变幅度缩放器和时间延迟的方位控制块的耳机控制在使用耳机的声音收听者的方位角和范围内。输入音频信号被馈送到范围控制块，并且延迟缓冲器中的缩放器和抽头的值从控制器中的查找表中读出，该控制器被对应于对应于围绕耳机佩戴者的圈子。可以根据要定位的输入音频信号的数量来提供若干范围控制块和方位控制块。所有范围和方位控制由范围控制块和方位控制块提供，使得所得到的信号仅需要固定数量的滤波器，而不管输入音频信号的数量如何，以提供信号处理。这样的信号处理使用前和后的早期反射滤波器，左和右混响滤波器以及具有磁头相关传递函数的前后方位滤波器来实现。

6. 发明授权

US5436975A Apparatus for cross fading out of the head sound locations 失效
标题翻译：用于从头部声音位置交叉淡出的装置
公开(公告)号：US5436975A
公开(公告)日：1995-07-25
申请号：US190456
申请日：1994-02-02
申请人： Danny D. Lowe , Simon Williams , Terry Cashion
发明人： Danny D. Lowe , Simon Williams , Terry Cashion
IPC分类号： H04S1/00 , H04S3/00 , H04S7/00 , H04R5/00
CPC分类号： H04S7/30 , H04S2400/11 , H04S3/004
摘要： A system for use with headphones provides sound imaging positioning that can accurately locate the sound image at any one of a number of points surrounding the listener and can smoothly fade the sound position from one point to the next as the apparent sound source moves relative to the listener during panning. Individual sound positioners are provided that include only scalers or delay lines are provided for each channel, so that the same sound location filters can be utilized with a number of voices or input channels.
摘要翻译：与耳机一起使用的系统提供声像成像定位，其可以在听众周围的多个点中的任何一个位置处精确地定位声像，并且可以使声音位置从一个点到下一个点平滑地淡出，因为明显的声源相对于听众在淘选期间。提供单独的声音定位器，其仅包括缩放器或为每个通道提供延迟线，使得可以使用与多个声音或输入声道相同的声音位置滤波器。

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