公开(公告)号：US08687822B1

公开(公告)日：2014-04-01

申请号：US11332504

申请日：2006-01-12

申请人： Perrin Meyer ,  Pablo Espinosa ,  John Meyer ,  Paul Kohut

发明人： Perrin Meyer ,  Pablo Espinosa ,  John Meyer ,  Paul Kohut

IPC分类号： H03G5/00

CPC分类号： H03G5/165 ,  H03G5/005

摘要： An improved filtering system for loudspeaker equalization is comprised of two filtering sections, a single pole filtering section having single pole filters for shaping the frequency response of the audio signal over the operative bandwidth of the equalized loudspeaker system, and a parametric filtering section that provides for localized parametric equalization for compensating for room or other environmental resonances. The filtering system of the invention can be used to create a wide variety of useful filter shapes, while minimizing phase distortion that can harm the transient response of phase-aligned loudspeakers of a loudspeaker system.

摘要翻译： 用于扬声器均衡的改进的滤波系统包括两个滤波部分，单极滤波部分具有单极滤波器，用于在均衡扬声器系统的操作带宽上整形音频信号的频率响应，以及参数滤波部分， 用于补偿室内或其他环境共振的局部参数均衡。 本发明的滤波系统可用于产生各种有用的滤波器形状，同时最小化可能损害扬声器系统的相位对准扬声器的瞬态响应的相位失真。

公开(公告)号：US08406445B1

公开(公告)日：2013-03-26

申请号：US12896363

申请日：2010-10-01

申请人： Jon M. Arneson ,  Paul Kohut ,  John D. Meyer ,  Pablo Espinosa ,  Richard D. Herr

发明人： Jon M. Arneson ,  Paul Kohut ,  John D. Meyer ,  Pablo Espinosa ,  Richard D. Herr

IPC分类号： H04R1/20 ,  H04R1/02

CPC分类号： H04R1/26 ,  H04R1/24 ,  H04R1/2819 ,  H04R1/30 ,  H04R3/14 ,  H04R2205/022

摘要： A loudspeaker system has a high frequency channel for driving a horn loaded high frequency transducer, and a low frequency channel for driving a low frequency transducer. A signal processing circuit is provided which has at least one first order and at least one second order cross-over circuit portion in the high channel and at least one first order and at least one second order cross-over circuit portion in the low frequency channel. These cross-over portions produce a cross-over frequency range for the loudspeaker system that is below the cut-off frequency of the horn. The signal processing circuit, including its cross-over circuit portions and in conjunction with the design of the expansion walls of the horn, extends vertical beamwidth control of the acoustic output of the loudspeaker system at the loudspeaker system's lower frequency range.

摘要翻译： 扬声器系统具有用于驱动喇叭负载的高频换能器的高频通道和用于驱动低频换能器的低频通道。 提供一种信号处理电路，其在高通道中具有至少一个第一级和至少一个第二级交叉电路部分，并且在低频信道中具有至少一个第一级和至少一个第二级交叉电路部分 。 这些交叉部分产生低于喇叭截止频率的扬声器系统的交叉频率范围。 信号处理电路，包括其交叉电路部分，并结合喇叭的扩展壁的设计，延伸扬声器系统在较低频率范围内的声输出的垂直波束宽度控制。

公开(公告)号：US06931135B1

公开(公告)日：2005-08-16

申请号：US09974778

申请日：2001-10-09

申请人： Paul Kohut

发明人： Paul Kohut

IPC分类号： H03G11/00 ,  H03G11/02 ,  H04R3/00 ,  H03G5/00 ,  H04R29/00

CPC分类号： H04R3/007 ,  H03G11/00 ,  H03G11/02

摘要： A circuit and method provides for the protection of transducers from over excursion, particularly for the protection of transducers for audio loudspeakers. A frequency dependent excursion limiter circuit has an initial summing stage followed by a shaping filter stage. A clamping function is provided at the summing stage, or at a separate stage between the summing stage and the shaping filter stage, for clamping the driving signal at a predetermined maximum voltage if the driving signal exceeds the predetermined maximum voltage level. The shaping filter stage provides a frequency response shaping function based on a predetermined frequency response shaping criteria which is related to the frequency dependent excursion limits of the transducers being protected from mechanical overload. An inverse shaping filter function is provided at the initial summing stage by providing feedback from the shaping filter stage, thus eliminating the need for a separate inverse shaping filter circuit before clamping. The inverse shaping filter function allows low level signals below clamping to pass through the circuit unaffected.A frequency dependent excursion limiter circuit is also provided in the closed loop circuit of servo feedback system for protecting transducers in a servo feedback system from over excursion.

摘要翻译： 电路和方法提供了保护传感器免受过度偏移的影响，特别是用于保护用于音频扬声器的换能器。 频率依赖偏移限幅器电路具有初始求和级，之后是形状滤波级。 如果驱动信号超过预定的最大电压电平，则在求和级或在求和级与整形滤波级之间的单独级提供钳位功能，用于将驱动信号钳位在预定的最大电压。 整形滤波器级基于预定的频率响应整形标准提供频率响应整形功能，其与被保护免受机械过载的换能器的频率相关偏移极限相关。 在初始求和阶段通过提供来自整形滤波器级的反馈来提供逆整形滤波器功能，因此在钳位之前不需要单独的反向整形滤波器电路。 逆整形滤波器功能允许低于钳位的低电平信号通过电路不受影响。 在伺服反馈系统的闭环电路中还提供了频率依赖偏移限制器电路，用于保护伺服反馈系统中的换能器免于过度偏移。

公开(公告)号：US08416017B2

公开(公告)日：2013-04-09

申请号：US12907918

申请日：2010-10-19

申请人： Paul Kohut ,  Peter L. Winship ,  Peter Kowalcyzk ,  Steven Metz ,  Kurt Keown

发明人： Paul Kohut ,  Peter L. Winship ,  Peter Kowalcyzk ,  Steven Metz ,  Kurt Keown

IPC分类号： H03F3/38 ,  H03F3/68

CPC分类号： H03F3/2173 ,  H03F1/0222 ,  H03F2200/03 ,  H03F2203/21181 ,  H03F2203/21193

摘要： A circuit for reducing noise in Class D amplifiers has a power stage voltage control means (17, 21, 22) responsive to defined signal conditions of the audio signal input (1). The power stage voltage control means is operative to lower the voltage at the supply voltage input (31) of the amplifier's switching power output stage (30) upon the detection of a defined condition in the audio signal input such that the Class-D amplifier operates at reduced voltage (“idles”) during the defined audio input signal condition.

摘要翻译： 用于降低D类放大器噪声的电路具有响应于音频信号输入（1）的规定信号条件的功率级电压控制装置（17,21,22）。 功率级电压控制装置用于在检测音频信号输入中的限定条件时降低放大器的开关功率输出级（30）的电源电压输入端（31）处的电压，使D类放大器工作 在定义的音频输入信号条件期间以降低的电压（空闲）。

公开(公告)号：US5784474A

公开(公告)日：1998-07-21

申请号：US337637

申请日：1994-11-10

申请人： Paul Kohut ,  Peter C. Soper ,  John D. Meyer

发明人： Paul Kohut ,  Peter C. Soper ,  John D. Meyer

IPC分类号： H04R3/12 ,  H03G5/00

CPC分类号： H04R3/12

摘要： A method and correction circuit for improving and controlling the listening window and response of a two-way loudspeaker system utilizing a horn-loaded high frequency driver. The correction circuit includes adjustable active all-pass and band-pass filters, in a specific arrangement, coupled with conventional cross-over filters to achieve a maximally flat amplitude and phase response acoustically throughout a preferred listening window. A spectrum analyzer measures the near-field responses of the individual and combined transducers while adjustments are made. A phase shifting circuit is included in the low frequency channel which results in improved near-field to far-field response consistency and significantly improves the subjective characteristics of the high frequency horn.

摘要翻译： 一种用于改善和控制利用喇叭负载高频驱动器的双向扬声器系统的监听窗口和响应的方法和校正电路。 校正电路包括可调节的有源全通滤波器和带通滤波器，其具有特定布置，与传统的交叉滤波器耦合，以在整个优选收听窗口中声学地实现最大平坦的振幅和相位响应。 频谱分析仪在进行调整时测量单个和组合的换能器的近场响应。 在低频信道中包括一个移相电路，这导致近场到远场响应的一致性得到改善，并显着提高了高频喇叭的主观特性。

公开(公告)号：US20110254625A1

公开(公告)日：2011-10-20

申请号：US12907918

申请日：2010-10-19

申请人： Paul Kohut ,  Peter L. Winship ,  Peter Kowalcyzk ,  Steven Metz ,  Kurt Keown

发明人： Paul Kohut ,  Peter L. Winship ,  Peter Kowalcyzk ,  Steven Metz ,  Kurt Keown

IPC分类号： H03F3/217

CPC分类号： H03F3/2173 ,  H03F1/0222 ,  H03F2200/03 ,  H03F2203/21181 ,  H03F2203/21193

摘要： A circuit for reducing noise in Class D amplifiers has a power stage voltage control means (17, 21, 22) responsive to defined signal conditions of the audio signal input (1). The power stage voltage control means is operative to lower the voltage at the supply voltage input (31) of the amplifier's switching power output stage (30) upon the detection of a defined condition in the audio signal input such that the Class-D amplifier operates at reduced voltage (“idles”) during the defined audio input signal condition.

摘要翻译： 用于降低D类放大器噪声的电路具有响应于音频信号输入（1）的规定信号条件的功率级电压控制装置（17,21,22）。 功率级电压控制装置用于在检测音频信号输入中的限定条件时降低放大器的开关功率输出级（30）的电源电压输入端（31）处的电压，使D类放大器工作 在定义的音频输入信号条件期间以降低的电压（“空转”）。

公开(公告)号：US5377274A

公开(公告)日：1994-12-27

申请号：US157218

申请日：1993-11-22

申请人： John D. Meyer ,  Paul Kohut

发明人： John D. Meyer ,  Paul Kohut

IPC分类号： H04R3/04 ,  H04R3/14 ,  H04R29/00

CPC分类号： H04R29/001 ,  H04R29/003 ,  H04R3/04 ,  H04R3/14

摘要： A circuit for improving the transient behavior of a two-way loudspeaker system includes a crossover circuit with high selectivity, amplitude and phase correction circuitry for separately correcting the amplitude and phase responses of the high and low frequency drivers in their mounting environment, and correction circuitry for correcting the composite amplitude and phase response of the overall loudspeaker system after insertion of the crossover. A further phase offset technique and circuit provides for introducing frequency dependent phase shift in the loudspeaker system's high or low frequency channels for offsetting the phase responses of the high and low frequency drivers within the crossover frequency range. According to the phase offset technique of the invention, phase shift is added, preferably in the high frequency channel, until composite amplitude response curves observed on-axis and at different vertical angles off-axis are forced to be consistent. After consistency is achieved the deterioration of the amplitude response resulting from the phase offset is corrected to a flat response by means of a forced series amplitude correction circuit inserted before the crossover. The result is improved transient response off-axis as well as on-axis.

摘要翻译： 用于改善双向扬声器系统的瞬态特性的电路包括具有高选择性，幅度和相位校正电路的交叉电路，用于在其安装环境中单独校正高频和低频驱动器的振幅和相位响应，以及校正电路 用于在插入交叉之后校正整个扬声器系统的复合幅度和相位响应。 进一步的相位偏移技术和电路提供了在扬声器系统的高或低频率信道中引入频率相关相移，以抵消在交叉频率范围内的高频和低频驱动器的相位响应。 根据本发明的相位偏移技术，相位偏移优选地在高频信道中被添加，直到在轴上观察到的不同垂直角度的复合振幅响应曲线被迫使其一致。 在实现一致性之后，通过在交叉之前插入的强制串联幅度校正电路将由相位偏移产生的振幅响应的劣化校正为平坦的响应。 结果是提高了离轴和轴上的瞬态响应。

公开(公告)号：US5185801A

公开(公告)日：1993-02-09

申请号：US732445

申请日：1991-07-18

申请人： John D. Meyer ,  Paul Kohut

发明人： John D. Meyer ,  Paul Kohut

IPC分类号： H04R3/04 ,  H04R3/14 ,  H04R29/00

CPC分类号： H04R29/001 ,  H04R29/003 ,  H04R3/04 ,  H04R3/14

摘要： A circuit for improving the transient behavior of a two-way loudspeaker system includes a crossover circuit with high selectivity, amplitude and phase correction circuitry for separately correcting the amplitude and phase responses of the high and low frequency drivers in their mounting environment, and correction circuitry for correcting the composite amplitude and phase response of the overall loudspeaker system after insertion of the crossover. A further phase offset technique and circuit provides for introducing frequency dependent phase shift in the loudspeaker system's high or low frequency channels for offsetting the phase responses of the high and low frequency drivers within the crossover frequency range. According to the phase offset technique of the invention, phase shift is added, preferably in the high frequency channel, until composite amplitude response curves observed on-axis and at different vertical angles off-axis are forced to be consistent. After consistency is achieved the deterioration of the amplitude response resulting from the phase offset is corrected to a flat response by means of a forced series amplitude correction circuit inserted before the crossover. The result is improved transient response off-axis as well as on-axis.

摘要翻译： 用于改善双向扬声器系统的瞬态特性的电路包括具有高选择性，幅度和相位校正电路的交叉电路，用于在其安装环境中单独校正高频和低频驱动器的振幅和相位响应，以及校正电路 用于在插入交叉之后校正整个扬声器系统的复合幅度和相位响应。 进一步的相位偏移技术和电路提供了在扬声器系统的高或低频率信道中引入频率相关相移，用于抵消在交叉频率范围内的高频和低频驱动器的相位响应。 根据本发明的相位偏移技术，相位偏移优选地在高频信道中被添加，直到在轴上观察到的不同垂直角度的复合振幅响应曲线被迫使其一致。 在实现一致性之后，通过在交叉之前插入的强制串联幅度校正电路将由相位偏移产生的振幅响应的劣化校正为平坦的响应。 结果是提高了离轴和轴上的瞬态响应。