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1. 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。

2. 发明授权

US5671287A Stereophonic signal processor 失效
标题翻译：立体声信号处理器
公开(公告)号：US5671287A
公开(公告)日：1997-09-23
申请号：US347399
申请日：1995-02-21
申请人： Michael Anthony Gerzon
发明人： Michael Anthony Gerzon
IPC分类号： H04S5/00 , H04R5/00
CPC分类号： H04S5/00 , H04S2420/11
摘要： A frequency-dependent linear audio signal processor takes source signals S in input signals and provide directionally spread directionally encoded output signals. The processor directionally encodes with constant gain magnitude frequency components of the source signal S to-and-fro across a predetermined directional stage P" as frequency increases such that at least three predetermined positions within the stage P", the directional encoding has substantially zero perceived phasiness. The processor may be a frequency-dependent rotation matrix for stereo input signal and may be a unitary network using a feedback path around parallel identical all-pass networks in series with a rotation matrix and a feedforward path bypassing the all-pass networks. Successive frequencies of positioning of source signal S at a predetermined position P within the stage P" are preferably spaced approximately uniformly on a logarithmic or Bark Frequency scale. Several sources S may have individually adjustable spreads while sharing common processor.
摘要翻译： PCT No.PCT / GB93 / 01131 Sec。 371日期1995年2月21日 102（e）日期1995年2月21日PCT提交1993年5月28日PCT公布。出版物WO93 / 25055 日期：1993年12月9日，频率相关的线性音频信号处理器在输入信号中获取信号S，并提供定向扩展的定向编码的输出信号。当频率增加时，处理器以预定的定向级P“的方式对来自源信号S的恒定增益幅度频率分量进行定向编码，使得在级P”内的至少三个预定位置，定向编码基本上零感觉到偏袒。处理器可以是用于立体声输入信号的频率依赖旋转矩阵，并且可以是使用围绕与旋转矩阵和绕过全通网络的前馈路径串联的并行相同全通路网络的反馈路径的整体网络。源级信号S在级P“中的预定位置P处的定位频率的相继频率优选地以对数或树皮频率标度大致均匀地间隔开。在共享公共处理器的同时，多个源S可能具有单独的可调扩展。

3. 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。

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