公开(公告)号：US20100158268A1

公开(公告)日：2010-06-24

申请号：US12637444

申请日：2009-12-14

Applicant: Trygve Frederik MARTON ,  Lennart Burenius

Inventor： Trygve Frederik MARTON ,  Lennart Burenius

IPC: H04R3/00

CPC classification number: H04R3/005 ,  H04N7/142 ,  H04R2201/405

Abstract: A video teleconferencing directional microphone includes two microphone elements arranged coincidentally on a vertical axis. The two microphone elements are placed on a supporting surface so that a first microphone element is on the surface, and the second microphone elements are elevated above the supporting surface. The directional microphone also includes filters, an adder assembly, and an equalizer, which are used to shape the directivity pattern of the directional microphone into a toroid sensitivity pattern. The toroid sensitivity pattern increases sensitivity in the direction of a sound source of interest, while simultaneously reduces sensitivity to any sound waves generated by noise sources from certain elevation angles.

Abstract translation: 视频电话会议定向麦克风包括在垂直轴上巧合布置的两个麦克风元件。 两个麦克风元件被放置在支撑表面上，使得第一麦克风元件在表面上，并且第二麦克风元件在支撑表面上方升高。 定向麦克风还包括滤波器，加法器组件和均衡器，其用于将定向麦克风的方向性图案成形为环形灵敏度图案。 环形灵敏度图案增加了感兴趣的声源方向的灵敏度，同时降低了由某些仰角产生的噪声源产生的声波的灵敏度。

公开(公告)号：US20100215189A1

公开(公告)日：2010-08-26

申请号：US12691509

申请日：2010-01-21

Applicant: Trygve Frederik MARTON

Inventor： Trygve Frederik MARTON

IPC: H04R3/00 ,  H04R1/40

CPC classification number: H04R1/406 ,  H04R2430/21

Abstract: A video teleconferencing directional microphone has two surfaces joined with an angle of 90° relative to each other, a first omni directional microphone element arranged adjacent to the intersection between the two surfaces. The ceiling microphone assembly also includes a second omni directional microphone element arranged at a predetermined distance (d) from both surfaces. A subtractor subtracts the output of the first microphone element from the output of the second microphone element, and the output of the subtractor is equalized by an equalizer (Heq) to generate an equalized output. The surfaces and subtractor generates a quarter toroid directivity pattern for the ceiling microphone assembly. The quarter toroid sensitivity pattern increases sensitivity in the direction of a sound source of interest, but reduces sensitivity to any sound waves generated by noise sources at other locations or reverberations.

Abstract translation: 视频电话会议定向麦克风具有相对于彼此以90度的角度连接的两个表面，邻近两个表面之间的交叉点设置的第一全向麦克风元件。 天花板麦克风组件还包括从两个表面以预定距离（d）布置的第二全向麦克风元件。 减法器从第二麦克风元件的输出中减去第一麦克风元件的输出，并且减法器的输出由均衡器（Heq）相等以产生均衡的输出。 表面和减法器为天花板麦克风组件产生四分之一环形方向性图案。 四分之一环形灵敏度图案增加了感兴趣的声源的方向的灵敏度，但降低了对在其他位置或混响处的噪声源产生的任何声波的敏感度。

公开(公告)号：US20100166219A1

公开(公告)日：2010-07-01

申请号：US12645701

申请日：2009-12-23

Applicant: Trygve Frederik MARTON

Inventor： Trygve Frederik MARTON

IPC: H03G5/00 ,  H04R9/08

CPC classification number: H04R3/005 ,  H04M3/56 ,  H04R1/406 ,  H04R2201/403 ,  H04R2201/405 ,  H04R2430/03 ,  H04R2430/20

Abstract: A video teleconferencing directional microphone includes three microphone elements arranged coincidentally on a vertical axis. The three microphone elements are placed on a supporting surface so that a first microphone element is on the surface, and the second and third microphone elements are elevated above the supporting surface. The directional microphone also includes three filters, a summing node, and an equalizer, which are used to shape the directivity pattern of the directional microphone into an elevated toroid sensitivity pattern. The elevated toroid sensitivity pattern increases sensitivity in the direction of a sound source of interest, but reduces sensitivity to any sound waves generated by noise sources at other locations.

Abstract translation: 视频电话会议定向麦克风包括三个麦克风元件，它们在垂直轴上巧妙地布置。 三个麦克风元件被放置在支撑表面上，使得第一麦克风元件在表面上，并且第二和第三麦克风元件在支撑表面上方升高。 定向麦克风还包括三个滤波器，一个求和节点和一个均衡器，用于将定向麦克风的方向性图案形成升高的环形灵敏度模式。 升高的环形灵敏度图案增加了感兴趣的声源的方向的灵敏度，但降低了对在其他位置处的噪声源产生的任何声波的灵敏度。

公开(公告)号：US20090185695A1

公开(公告)日：2009-07-23

申请号：US12338719

申请日：2008-12-18

Applicant: Trygve Frederik MARTON ,  Torgeir Grothe LIEN

Inventor： Trygve Frederik MARTON ,  Torgeir Grothe LIEN

IPC: H04B3/20

CPC classification number: H04M9/082

Abstract: Different sampling rates between a playout unit and a capture unit are compensated for via a system, method and computer program product. The playout unit receives samples from a computational unit, and the capture unit sends samples to the computational unit. A playout FIFO buffer operates in a playout time domain, and a capture FIFO buffer operates in a capture time domain. The computational unit is synchronized to a common clock. A first relationship is calculated between the common clock and a playout fifo buffer read pointer, and a second relationship is calculated between the common clock and a capture FIFO buffer write pointer. For each sample in the playout time domain a corresponding sample in the samples from said computational unit is found and sent to the playout FIFO buffer. For each sample in the common clock time domain the corresponding sample in the capture time domain is found and sent to the computational unit.

Abstract translation: 通过系统，方法和计算机程序产品补偿播出单元和捕获单元之间的不同采样率。 播放单元从计算单元接收样本，并且捕获单元将样本发送到计算单元。 播放FIFO缓冲器在播放时域中操作，并且捕获FIFO缓冲器在捕获时域中操作。 计算单元与公共时钟同步。 在公共时钟和播出fifo缓冲区读指针之间计算第一关系，并且在公共时钟和捕获FIFO缓冲器写指针之间计算第二关系。 对于播放时域中的每个样本，找到来自所述计算单元的样本中的对应样本并发送到播放FIFO缓冲器。 对于公共时钟时域中的每个采样，捕获时域中的相应采样被发现并发送到计算单元。