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    • 3. 发明授权
    • Toroid microphone apparatus
    • 环形麦克风设备
    • US08259959B2
    • 2012-09-04
    • US12637444
    • 2009-12-14
    • Trygve Frederik MartonLennart Burenius
    • Trygve Frederik MartonLennart Burenius
    • H04R3/00
    • H04R3/005H04N7/142H04R2201/405
    • 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.
    • 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。
    • 4. 发明授权
    • Elevated toroid microphone apparatus
    • 高架环形麦克风设备
    • US08472640B2
    • 2013-06-25
    • US12645701
    • 2009-12-23
    • Trygve Frederik Marton
    • Trygve Frederik Marton
    • H04R3/00
    • H04R3/005H04M3/56H04R1/406H04R2201/403H04R2201/405H04R2430/03H04R2430/20
    • 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.
    • 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敏感度。
    • 5. 发明申请
    • ELEVATED TOROID MICROPHONE APPARATUS
    • 高级TOROID麦克风设备
    • US20100166219A1
    • 2010-07-01
    • US12645701
    • 2009-12-23
    • Trygve Frederik MARTON
    • Trygve Frederik MARTON
    • H03G5/00H04R9/08
    • H04R3/005H04M3/56H04R1/406H04R2201/403H04R2201/405H04R2430/03H04R2430/20
    • 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.
    • 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。
    • 6. 发明申请
    • METHOD AND SYSTEM FOR CLOCK DRIFT COMPENSATION
    • 时钟补偿的方法和系统
    • US20090185695A1
    • 2009-07-23
    • US12338719
    • 2008-12-18
    • Trygve Frederik MARTONTorgeir Grothe LIEN
    • Trygve Frederik MARTONTorgeir Grothe LIEN
    • H04B3/20
    • H04M9/082
    • 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.
    • 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。
    • 7. 发明授权
    • Microphone
    • 麦克风
    • US07412066B2
    • 2008-08-12
    • US10922793
    • 2004-08-20
    • Peter MurenTrygve Frederik Marton
    • Peter MurenTrygve Frederik Marton
    • H04R25/00
    • H04R9/08H04R9/16
    • A sound recording and/or sound reproducing part loosely anchored/connected to a second part wherein the sound recording and/or sound reproducing part is levitated on a magnetic field. The sound recording and/or sound reproducing part and the second part in combination forms a first sound recording and/or sound reproducing device. The sound recording and/or sound reproducing part can be used within on or more of the following devices; a loud speaking telephone, a telephone, wireless communication equipment, a mobile phone, a Bluetooth device, a videoconference terminal, a hearing aid or active ear protection equipment.
    • 声音记录和/或声音再现部分松散地锚固/连接到第二部分,其中声音记录和/或声音再现部分在磁场上悬浮。 录音和/或声音再现部分和第二部分组合形成第一声音记录和/或声音再现装置。 录音和/或声音再现部分可以在以下装置的一个或多个上使用; 大声电话,电话,无线通信设备,移动电话,蓝牙设备,视频会议终端,助听器或主动耳朵保护设备。
    • 8. 发明授权
    • Echo canceller with reduced requirement for processing power
    • 回波消除器对处理能力要求降低
    • US07010119B2
    • 2006-03-07
    • US10724043
    • 2003-12-01
    • Trygve Frederik MartonIngvar Flaten Aarnes
    • Trygve Frederik MartonIngvar Flaten Aarnes
    • H04B3/23
    • H04M9/082
    • An echo canceller processing echo, noise and near end talk in a narrower, but still intelligible, frequency band for reducing required processing power and complexity. In a preferred embodiment of the present invention, an input audio signal of captured sound in an audio communication system is decimated and then divided into a number of sub bands by an analyze filter. Each sub band is processed as in background audio echo cancelling by subtracting the signal with an echo estimate from a model of the acoustic signal in the respective sub band, except from that the signal is also bypassed, adjusted by a filter and subtracted from the processed signal. The resulting signals are then recombined by a synthesize filter and interpolated to the original sampling rate and bandwidth. Finally, the output from the synthesize filter is added to the input audio signal, which has been delayed and adjusted by a filter. The filters are controlled by a control algorithm detecting the presence of near end sound, far end sound and noise, so that the filters, and consequently the high pass filter of the echo canceller, only pass high frequency (above low pass frequencies) when only near end sound is detected.
    • 回波消除器在较窄但仍然可理解的频带中处理回波,噪声和近端通话,以减少所需的处理能力和复杂性。 在本发明的优选实施例中,音频通信系统中的捕获声音的输入音频信号被抽取,然后由分析滤波器分成多个子频带。 通过从相应子带中的声学信号的模型中减去具有回波估计的信号来处理每个子带,除了信号被旁路之外,由滤波器调整并从处理的信号中减去 信号。 然后,所得到的信号由合成滤波器重新组合,并被内插到原始采样速率和带宽。 最后,将合成滤波器的输出添加到输入音频信号中,输入音频信号被滤波器延迟和调整。 滤波器由检测近端声音,远端声音和噪声的存在的控制算法控制,使得滤波器以及因此的回波消除器的高通滤波器仅在仅仅通过高频(高于低通频率)时才通过 检测到近端声音。