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1. 发明授权

US5555306A Audio signal processor providing simulated source distance control 失效
标题翻译：音频信号处理器提供模拟源距离控制
公开(公告)号：US5555306A
公开(公告)日：1996-09-10
申请号：US495712
申请日：1995-06-27
申请人： Michael A. Gerzon
发明人： Michael A. Gerzon
IPC分类号： G10K15/12 , H04S1/00 , H04S5/00 , H04S7/00 , H03G3/00
CPC分类号： H04S3/002 , G10K15/12 , H04S1/002 , H04S5/00 , H04S7/305
摘要： An audio signal processing system produces an output 24 having an illusory distance effect for a sound source signal S by feeding it via a direct signal path 25 and an indirect signal path 22, 23 passing through early reflection simulation apparatus 1 which feed an output mixing mechanism 9. A control system adjusts the relative delays 3, 4 and relative gains 5, 6 in the direct 25 and indirect 22, 23 signal paths to modify the illusory distance effect so as to substantially maintain the mathematical relationship between the gains and time delays of simulated reflections relative to first sound arrivals at the output 24 encountered for sounds at that source distance in actual rooms. Signal paths 22, 23, 24, 25 may be stereophonic or multichannel using matrix gain coefficients in the early reflection simulator 1, and may produce different simulated distances for different sound positions. A plurality of sound sources S may have different simulated distances while feeding a common early reflection simulator 1.
摘要翻译：音频信号处理系统通过经由直接信号路径25和经过早期反射模拟装置1的间接信号路径22,23馈送声源信号S，产生具有虚声距离效应的输出24，该反馈模拟装置1将输出混合机构控制系统调整直接25和间接22,23信号路径中的相对延迟3,4和相对增益5,6来修改虚拟距离效应，从而基本上保持增益和时间延迟之间的数学关系相对于在实际房间中在该源距离处的声音遇到的输出24处的第一声音到达的模拟反射。信号路径22,23,24,25可以是在早期反射模拟器1中使用矩阵增益系数的立体声或多声道，并且可以为不同声音位置产生不同的模拟距离。在馈送公共早期反射模拟器1时，多个声源S可以具有不同的模拟距离。

2. 发明授权

US5511129A Compensating filters 失效
标题翻译：补偿过滤器
公开(公告)号：US5511129A
公开(公告)日：1996-04-23
申请号：US74837
申请日：1993-08-03
申请人： Peter G. Craven , Michael A. Gerzon
发明人： Peter G. Craven , Michael A. Gerzon
IPC分类号： H03G5/16 , H03H21/00 , H04R3/04 , H04R29/00 , H04S7/00 , H03G5/00
CPC分类号： H04S7/307 , H03G5/165 , H03H21/0012 , H04R3/04 , H04S7/305 , H04R29/001 , H04S7/301 , H04S7/40
摘要： A prefilter (5) for an audio system comprising a loudspeaker (1) in a room (2), which corrects both amplitude and phase errors due to the loudspeaker (1) by a linear phase correction filter response and corrects the amplitude response of the room (2) whilst introducing the minimum possible amount of extra phase distortion by employing a minimum phase correction filter stage. A test signal generator (8) generates a signal comprising a periodic frequency sweep with a greater phase repetition period than the frequency repetition period. A microphone (7) positioned at various points in the room (2) measures the audio signal processed by the room (2) and loudspeaker (1), and a coefficient calculator (6) (e.g. a digital signal processor device) derives the signal response of the room and thereby a requisite minimum phase correction to be cascaded with the linear phase correction already calculated for the loudspeaker (1). Filter (5) may comprise the same digital signal processor as the coefficient calculator (6). Applications in high fidelity audio reproduction, and in car stereo reproduction.
摘要翻译： PCT No.PCT / GB91 / 02200 Sec。 371日期1993年8月3日 102（e）日期1993年8月3日PCT 1991年12月11日PCT PCT。 WO92 / 10876BC出版物日期：1992年6月25日。一种用于音频系统的预滤波器（5），包括在房间（2）中的扬声器（1），其通过线性相位校正滤波器响应来校正由扬声器（1）引起的幅度和相位误差并且通过采用最小相位校正滤波器级来引入最小可能的额外相位失真量来校正房间（2）的振幅响应。测试信号发生器（8）产生包括具有比频率重复周期更大的相位重复周期的周期性频率扫描的信号。定位在房间（2）中的各个点处的麦克风（7）测量由房间（2）和扬声器（1）处理的音频信号，并且系数计算器（6）（例如数字信号处理器设备）导出信号响应室，从而与已经为扬声器（1）计算出的线性相位校正级联进行必要的最小相位校正。滤波器（5）可以包括与系数计算器（6）相同的数字信号处理器。应用于高保真音频再现和汽车立体声再现。

3. 发明授权

US4151369A Sound reproduction systems 失效
标题翻译：声音再现系统
公开(公告)号：US4151369A
公开(公告)日：1979-04-24
申请号：US854039
申请日：1977-11-22
申请人： Michael A. Gerzon
发明人： Michael A. Gerzon
IPC分类号： H04S3/00 , H04S3/02 , H04S5/02 , H04R5/00
CPC分类号： H04S3/00 , H04S3/02 , H04S2420/11
摘要： A basic decoder designed to feed signals to at least three loudspeakers disposed at respective azimuths around a reference point at equal distances therefrom is modified to make it suitable for feeding loudspeakers at the same azimuths but at non-uniform distances from the reference point. Each output of the basic decoder is subject to a time delay proportional to the difference of time of travel of sound from the first pair of loudspeakers to the reference point and the time of travel of sound from the second pair of loudspeakers to the reference point, divided by the sum of said times of travel to an adder connected between the first velocity signal input and the corresponding high-pass filter.
摘要翻译：被设计为将信号馈送到至少三个扬声器的基本解码器被修改，以使其适合于以相同的方位但距离参考点不均匀的距离馈送扬声器。基本解码器的每个输出受到与声音从第一对扬声器到参考点的行进时间差的时间延迟和从第二对扬声器到参考点的声音行进时间成比例的时间延迟，除以所述行进时间与连接在第一速度信号输入与相应的高通滤波器之间的加法器之和。

4. 发明授权

US5815580A Compensating filters 失效
标题翻译：补偿过滤器
公开(公告)号：US5815580A
公开(公告)日：1998-09-29
申请号：US802208
申请日：1997-02-18
申请人： Peter G. Craven , Michael A. Gerzon
发明人： Peter G. Craven , Michael A. Gerzon
IPC分类号： H03G5/16 , H03H21/00 , H04R3/04 , H04R29/00 , H04S7/00
CPC分类号： H04S7/307 , H03G5/165 , H03H21/0012 , H04R3/04 , H04S7/305 , H04R29/001 , H04S7/301 , H04S7/40
摘要： A prefilter (5) for an audio system comprising a loudspeaker (1) in a room (2), which corrects both amplitude and phase errors due to the loudspeaker (1) by a linear phase correction filter response and corrects the amplitude response of the room (2) whilst introducing the minimum possible amount of extra phase distortion by employing a minimum phase correction filter stage. A test signal generator (8) generates a signal comprising a periodic frequency sweep with a greater phase repetition period than the frequency repetition period. A microphone (7) positioned at various points in the room (2) measures the audio signal processed by the room (2) and loudspeaker (1), and a coefficient calculator (6) (e.g. a digital signal processor device) derives the signal response of the room and thereby a requisite minimum phase correction to be cascaded with the linear phase correction already calculated for the loudspeaker (1). Filter (5) may comprise the same digital signal processor as the coefficient calculator (6). Applications in high fidelity audio reproduction, and in car stereo reproduction.
摘要翻译：一种用于音频系统的预滤波器（5），包括在房间（2）中的扬声器（1），其通过线性相位校正滤波器响应校正由扬声器（1）引起的幅度和相位误差，并校正（2），同时通过采用最小相位校正滤波器级来引入最小可能的额外相位失真量。测试信号发生器（8）产生包括具有比频率重复周期更大的相位重复周期的周期性频率扫描的信号。定位在房间（2）中的各个点处的麦克风（7）测量由房间（2）和扬声器（1）处理的音频信号，并且系数计算器（6）（例如数字信号处理器设备）导出信号响应室，从而与已经为扬声器（1）计算出的线性相位校正级联进行必要的最小相位校正。滤波器（5）可以包括与系数计算器（6）相同的数字信号处理器。应用于高保真音频再现和汽车立体声再现。

5. 发明授权

US5627899A Compensating filters 失效
标题翻译：补偿过滤器
公开(公告)号：US5627899A
公开(公告)日：1997-05-06
申请号：US561601
申请日：1995-11-21
申请人： Peter G. Craven , Michael A. Gerzon
发明人： Peter G. Craven , Michael A. Gerzon
IPC分类号： H03G5/16 , H03H21/00 , H04R3/04 , H04R29/00 , H04S7/00 , H03G5/00
CPC分类号： H04S7/307 , H03G5/165 , H03H21/0012 , H04R3/04 , H04S7/305 , H04R29/001 , H04S7/301 , H04S7/40
摘要： A prefilter (5) for an audio system comprising a loudspeaker (1) in a room (2), which corrects both amplitude and phase errors due to the loudspeaker (1) by a linear phase correction filter response and corrects the amplitude response of the room (2) whilst introducing the minimum possible amount of extra phase distortion by employing a minimum phase correction filter stage. A test signal generator (8) generates a signal comprising a periodic frequency sweep with a greater phase repetition period than the frequency repetition period. A microphone (7) positioned at various points in the room (2) measures the audio signal processed by the room (2) and loudspeaker (1), and a coefficient calculator (6) (e.g. a digital signal processor device) derives the signal response of the room and thereby a requisite minimum phase correction to be cascaded with the linear phase correction already calculated for the loudspeaker (1). Filter (5) may comprise the same digital signal processor as the coefficient calculator (6). Applications in high fidelity audio reproduction, and in car stereo reproduction.
摘要翻译：一种用于音频系统的预滤波器（5），包括在房间（2）中的扬声器（1），其通过线性相位校正滤波器响应校正由扬声器（1）引起的幅度和相位误差，并校正（2），同时通过采用最小相位校正滤波器级来引入最小可能的额外相位失真量。测试信号发生器（8）产生包括具有比频率重复周期更大的相位重复周期的周期性频率扫描的信号。定位在房间（2）中的各个点处的麦克风（7）测量由房间（2）和扬声器（1）处理的音频信号，并且系数计算器（6）（例如数字信号处理器设备）导出信号响应室，从而与已经为扬声器（1）计算出的线性相位校正级联进行必要的最小相位校正。滤波器（5）可以包括与系数计算器（6）相同的数字信号处理器。应用于高保真音频再现和汽车立体声再现。

6. 发明授权

US06784812B2 Lossless coding method for waveform data 有权
标题翻译：波形数据的无损编码方法
公开(公告)号：US06784812B2
公开(公告)日：2004-08-31
申请号：US10694712
申请日：2003-10-27
申请人： Peter G Craven , Michael A. Gerzon
发明人： Peter G Craven , Michael A. Gerzon
IPC分类号： H03M700
CPC分类号： H03M7/3046
摘要： In a method of lossless processing of an integer value signal in a prediction filter which includes a quantiser, a numerator of the prediction filter is implemented prior to the quantiser and a denominator of the prediction filter is implemented recursively around the quantiser to reduce the peak data rate of an output signal. In the lossless processor, at each sample instant, an input to the quantiser is jointly responsive to a first sample value of a signal input to the prediction filter, a second sample value of a signal input to the prediction filter at a previous sample instant, and an output value of the quantiser at a previous sample incident. In a preferred embodiment, the prediction filter includes noise shaping for affecting the output of the quantiser.
摘要翻译：在包括量化器的预测滤波器中对整数值信号进行无损处理的方法中，在量化器之前实现预测滤波器的分子，并且在量化器周围递归地实现预测滤波器的分母以减少峰值数据输出信号的速率。在无损处理器中，在每个采样时刻，对量化器的输入共同响应输入到预测滤波器的信号的第一采样值，在先前采样时刻输入到预测滤波器的信号的第二采样值，以及在之前的采样事件处的量化器的输出值。在优选实施例中，预测滤波器包括用于影响量化器的输出的噪声整形。

7. 发明授权

US06664913B1 Lossless coding method for waveform data 有权
标题翻译：波形数据的无损编码方法
公开(公告)号：US06664913B1
公开(公告)日：2003-12-16
申请号：US08952743
申请日：1999-05-17
申请人： Peter G. Craven , Michael A. Gerzon
发明人： Peter G. Craven , Michael A. Gerzon
IPC分类号： H03M100
CPC分类号： H03M7/3046
摘要： In a method of lossless processing of an integer value signal in a prediction filter which includes a quantiser, a numerator of the prediction filter is implemented prior to the quantiser and a denominator of the prediction filter is implemented recursively around the quantiser to reduce the peak data rate of an output signal. In the lossless processor, at each sample instant, an input to the quantiser is jointly responsive to a first sample value of a signal input to the prediction filter, a second sample value of a signal input to the prediction filter at a previous sample instant, and an output value of the quantiser at a previous sample incident. In a preferred embodiment, the prediction filter includes noise shaping for affecting the output of the quantiser.
摘要翻译：在包括量化器的预测滤波器中对整数值信号进行无损处理的方法中，在量化器之前实现预测滤波器的分子，并且在量化器周围递归地实现预测滤波器的分母以减少峰值数据输出信号的速率。在无损处理器中，在每个采样时刻，对量化器的输入共同响应输入到预测滤波器的信号的第一采样值，在先前采样时刻输入到预测滤波器的信号的第二采样值，以及在之前的采样事件处的量化器的输出值。在优选实施例中，预测滤波器包括用于影响量化器的输出的噪声整形。

8. 发明授权

US5594800A Sound reproduction system having a matrix converter 失效
标题翻译：具有矩阵转换器的声音再现系统
公开(公告)号：US5594800A
公开(公告)日：1997-01-14
申请号：US589994
申请日：1996-01-23
申请人： Michael A. Gerzon
发明人： Michael A. Gerzon
IPC分类号： H04S3/00 , H04S3/02 , H04S5/00 , H04R5/00
CPC分类号： H04S3/02 , H04S2420/11 , H04S3/008 , H04S5/005
摘要： Matrix reproduction decoding means derive from input signals intended to feed a stereophonic plurality of loudspeakers output signals intended to feed a second greater plurality of loudspeakers in a stereophonic arrangement covering a sector of directions, substantially so as to preserve total reproduced energy to within an overall gain and equalization, and to preserve to within constants of proportionality the angular dispositions of reproduced acoustical velocity and sound intensity vectors at an ideal listening position. Preferably for two-channel signals matrix means is frequency-dependent giving increased angular width above 5 kHz, and may incorporate width control. Matrix means encoding loudspeaker feed signals into transmission channel signals, and matrix means decoding transmission channel signals into loudspeaker feed signals may be used giving overall matrix means in accordance with the invention. Matrix means may be used to provide improved directional matching of sounds and associated visual images.
摘要翻译：矩阵再现解码装置源自旨在馈送立体声多个扬声器输出信号的输入信号，该输出信号旨在以覆盖方向区域的立体声布置馈送第二较大的多个扬声器，以便将总再现能量保持在总体增益内并且在理想的聆听位置保持再现的声速和声强度矢量的角度配置的比例的内部常数。优选地，对于双通道信号，矩阵装置是频率相关的，提供高于5kHz的增加的角宽度，并且可以包括宽度控制。矩阵意味着将扬声器馈送信号编码成传输信道信号，并且根据本发明可以使用将传输信道信号解码为扬声器馈送信号的矩阵装置给出整体矩阵装置。矩阵装置可用于提供声音和相关视觉图像的改进的方向匹配。

9. 发明授权

US4414430A Decoders for feeding irregular loudspeaker arrays 失效
标题翻译：用于馈送不规则扬声器阵列的解码器
公开(公告)号：US4414430A
公开(公告)日：1983-11-08
申请号：US305623
申请日：1981-09-24
申请人： Michael A. Gerzon
发明人： Michael A. Gerzon
IPC分类号： H04S3/02 , H04R5/04
CPC分类号： H04S3/02 , H04S2420/11
摘要： A decoder is provided for feeding an irregular array of m (being three or more) pairs of diametrically opposite loudspeakers, each loudspeaker being disposed at an equal distance r from a common reference point. The decoder incorporates a WXY circuit 10 for producing output signals W, X, Y and -jW from the input signals, and shelf filters 12, 14, 16 and 22 and high-pass filters 18, 20 and 24 for producing output signals W', X', Y' and -jW.sub.i.sup.". In addition the decoder includes an amplitude matrix circuit 26 for producing signals S.sub.i.sup.+ and S.sub.i.sup.-, to be fed to the loudspeakers of each pair, which satisfy particular gain requirements, whereby the outputs of the loudspeakers are adapted to irregular positioning of the loudspeakers which may be dictated by room geometry. A decoder is also provided for feeding a three-dimensional loudspeaker layout.
摘要翻译： PCT No.PCT / GB81 / 00018 Sec。 371日期1981年9月24日 102（e）1981年9月24日PCT提交1981年2月12日PCT公布。公开号WO81 / 02502 日期为1981年9月3日。提供一个解码器，用于馈送m（三个或更多）对直径相对的扬声器的不规则阵列，每个扬声器设置在与公共参考点相等的距离r处。解码器包括用于从输入信号产生输出信号W，X，Y和-jW的WXY电路10以及用于产生输出信号W'的产品滤波器12,14,16和22以及高通滤波器18,20和24，，X'，Y'和-jWi“。此外，解码器包括用于产生信号Si +和Si-的幅度矩阵电路26，其被馈送到每对的扬声器，其满足特定的增益要求，由此扬声器的输出适于扬声器的不规则定位，由房间几何规定。还提供了用于馈送三维扬声器布局的解码器。

10. 发明授权

US4139729A Sound reproduction system with matrixing of power amplifier outputs 失效
标题翻译：功率放大器输出矩阵的声音再现系统
公开(公告)号：US4139729A
公开(公告)日：1979-02-13
申请号：US809634
申请日：1977-06-24
申请人： Michael A. Gerzon
发明人： Michael A. Gerzon
IPC分类号： H04H20/88 , H04S3/02 , H04R5/00
CPC分类号： H04S3/02 , H04S2420/11
摘要： In a surround sound reproduction system the required number of power amplifiers is reduced by effecting at least part of the decoding operation by the manner in which the various loudspeakers are connected to the outputs of the power amplifiers while preserving linear independence of the signals fed to every set of three loudspeakers. In one embodiment, the loudspeakers are grouped in pairs such that the sum of signals fed to the loudspeakers of each pair is the same for all of the pairs, a first amplifier is arranged to receive said signal and a respective second amplifier for each pair of loudspeakers is arranged to receive the signal to be fed to one of the loudspeakers of such pair, the second loudspeaker of each pair being connected between the output of the corresponding second amplifier and the output of the first amplifier. In another embodiment, the number of loudspeakers is one greater than the number of power amplifiers, one loudspeaker is connected between earth and a common terminal and the other loudspeakers are connected between the common terminal and the output of a respective amplifier.
摘要翻译：在环绕立体声再现系统中，通过将各种扬声器连接到功率放大器的输出的方式进行至少部分解码操作来减少所需数量的功率放大器，同时保持馈送到每个信号的信号的线性独立性一套三个扬声器。在一个实施例中，扬声器成对分组，使得馈送到每对的扬声器的信号的总和对于所有对而相同，第一放大器被布置为接收所述信号，并且每个对的每个对的相应的第二放大器扬声器被布置成接收要馈送到这种对的扬声器中的一个的信号，每对的第二扬声器连接在相应的第二放大器的输出和第一放大器的输出之间。在另一个实施例中，扬声器的数量大于功率放大器的数量，一个扬声器连接在地球和公共终端之间，另一个扬声器连接在公共端和相应放大器的输出之间。

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