公开(公告)号：US20100239098A1

公开(公告)日：2010-09-23

申请号：US12729839

申请日：2010-03-23

Applicant: Markus Christoph

Inventor： Markus Christoph

IPC: H04R29/00

CPC classification number: G10L21/0272 ,  G10L21/0216 ,  G10L2021/02082

Abstract: A system for estimating the background noise in a loudspeaker-room-microphone system is presented herein where the loudspeaker is supplied with a source signal and the microphone picks up the source signal distorted by the room and provides a distorted signal. The system comprises an adaptive filter receiving the source signal and the distorted signal, and providing an error signal, a post filter connected downstream of the adaptive filter and a smoothing filter arrangement connected downstream of the adaptive filter. The smoothing filter arrangement includes a spectral domain smoothing filter and that provides a spectral domain estimated-noise signal, and a time domain smoothing filter and that provides a time domain estimated-noise signal. A scaling factor calculation unit receives signals indicative of the spectral domain estimated noise signal and the time domain estimated noise signal provides a scaling factor to a scaling unit that applies the scaling factor to the spectral domain estimated-noise signal to provide an enhanced spectral domain estimated-noise signal.

Abstract translation: 本文给出了一种用于估计扬声器室麦克风系统中的背景噪声的系统，其中扬声器被提供有源信号，并且麦克风拾取由房间失真的源信号，并提供失真的信号。 该系统包括接收源信号和失真信号的自适应滤波器，并提供误差信号，连接在自适应滤波器下游的后滤波器和连接在自适应滤波器下游的平滑滤波器装置。 平滑滤波器装置包括频域平滑滤波器并且提供频域估计噪声信号，以及时域平滑滤波器，并提供时域估计噪声信号。 比例因子计算单元接收指示频域估计噪声信号的信号，并且时域估计噪声信号向缩放单元提供缩放因子，该缩放单元将缩放因子应用于频域估计噪声信号，以提供估计的增强频域 -noise信号。

公开(公告)号：US20100215185A1

公开(公告)日：2010-08-26

申请号：US12710092

申请日：2010-02-22

Applicant: Markus Christoph

Inventor： Markus Christoph

IPC: H03B29/00

CPC classification number: H04M9/082 ,  H04B3/21

Abstract: An input signal is supplied to a loudspeaker-room-microphone system having a transfer function and that provides an output signal. An adaptive filter unit models the transfer function of the loudspeaker-room-microphone system and provides an approximated output signal, where the output signal and the approximated output signal are subtracted from each other to provide an error signal. The modeling of the transfer function of the loudspeaker-room-microphone system in the adaptive filter comprises transforming the input signal and the error signal from the time domain into the spectral domain; delaying of the input signal in the frequency domain to generate multiple differently delayed input signals in the frequency domain; adaptive filtering of each one of the multiple differently delayed input signals in the frequency domain according to the error signal in the spectral domain; summing up of the filtered differently delayed input signals in the frequency domain to generate the approximated output signal in the frequency domain; and transforming the approximated output signal from the spectral domain into the time domain.

Abstract translation: 输入信号被提供给具有传递函数并且提供输出信号的扬声器室麦克风系统。 自适应滤波器单元对扬声器 - 房间 - 麦克风系统的传递函数进行建模，并提供近似的输出信号，其中输出信号和近似输出信号被相互减去以提供误差信号。 自适应滤波器中扬声器 - 麦克风系统的传递函数的建模包括将输入信号和误差信号从时域变换为频域; 在频域中延迟输入信号以在频域中产生多个不同延迟的输入信号; 根据频域中的误差信号对频域中的多个不同延迟的输入信号中的每一个进行自适应滤波; 在频域中对被滤波的不同延迟的输入信号进行相加，以产生频域中的近似输出信号; 并将近似的输出信号从频域转换成时域。

公开(公告)号：US20090086990A1

公开(公告)日：2009-04-02

申请号：US12240523

申请日：2008-09-29

Applicant: Markus Christoph

Inventor： Markus Christoph

IPC: G10K11/16

CPC classification number: H04R3/04 ,  H04R2499/13 ,  H04S7/302

Abstract: An active noise cancellation system reduces, at a listening position, the power of a noise signal being radiated from a noise source to the listening position. The system includes an adaptive filter that receives a reference signal representing the noise signal, and provides a compensation signal. A bass management unit receives the compensation signal and applies a phase shift to the compensation signal to provide a phase shifted compensation signal. A first acoustic radiator receives the phase shifted compensation signal and radiates audio indicative thereof to the listening position. A second acoustic radiator receives the compensation signal and radiates audio indicative thereof to the listening position. The transfer function characteristics from the input of the bass management system to the listening position approximately matches a desired transfer function.

Abstract translation: 主动噪声消除系统在收听位置减少从噪声源辐射到收听位置的噪声信号的功率。 该系统包括自适应滤波器，其接收表示噪声信号的参考信号，并提供补偿信号。 低音管理单元接收补偿信号并向补偿信号施加相移以提供相移补偿信号。 第一声​​辐射器接收相移补偿信号并将指示其的音频辐射到收听位置。 第二声辐射器接收补偿信号并将指示其的音频发射到收听位置。 从低音管理系统的输入到收听位置的传递函数特性近似匹配期望的传递函数。

公开(公告)号：US07430296B2

公开(公告)日：2008-09-30

申请号：US10515045

申请日：2003-07-09

Applicant: Georg Spielbauer ,  Markus Christoph

Inventor： Georg Spielbauer ,  Markus Christoph

IPC: H03G3/00 ,  H03G7/00 ,  H03G5/00 ,  G10L21/00

CPC classification number: H03G7/007 ,  H03G5/005

Abstract: An audio system includes a first transformation device provided with an input audio signal and which transforms the input audio signal from the time domain to the frequency domain resulting in an input spectrum. The system also includes a spectral processing device, which is connected downstream from the first transformation device, that receives the input spectrum and produces from it an output spectrum with a dynamic range that is reduced from that of the input spectrum. The system further includes a second transformation device connected downstream from the spectral processing device, and provided with the output spectrum. The second transformation device transforms the output spectrum from the frequency domain to the time domain, and provides an output audio signal.

Abstract translation: 音频系统包括具有输入音频信号并且将输入音频信号从时域变换到频域的第一变换装置，从而产生输入频谱。 该系统还包括频谱处理装置，其连接在第一变换装置的下游，其接收输入频谱，并从其输出具有与输入频谱的动态范围相比较的动态范围的输出频谱。 该系统还包括连接在光谱处理装置下游并具有输出光谱的第二变换装置。 第二变换装置将输出频谱从频域变换到时域，并提供输出音频信号。

公开(公告)号：US20080181422A1

公开(公告)日：2008-07-31

申请号：US12015219

申请日：2008-01-16

Applicant: Markus Christoph

Inventor： Markus Christoph

IPC: H04R3/02

CPC classification number: G10K11/17817

Abstract: An active control of an unwanted noise signal at a listening site radiated by a noise source uses a reference signal that has an amplitude and/or frequency such that it is masked for a human listener at the listening site by the unwanted noise signal and/or a wanted signal present at the listening site in order to adapt for the time-varying secondary path in a real time manner such that a user doesn't fell disturbed by an additional artificial noise source.

Abstract translation: 在由噪声源辐射的监听站点处的不期望的噪声信号的主动控制使用具有幅度和/或频率的参考信号，使得其在收听站点处被不想要的噪声信号和/或 存在于收听站点处的有用信号，以便以实时方式适应时变次要路径，使得用户不会被额外的人造噪声源所干扰。

公开(公告)号：US20080031468A1

公开(公告)日：2008-02-07

申请号：US11753255

申请日：2007-05-24

Applicant: Markus Christoph ,  Tim Haulick ,  Gerhard Schmidt

Inventor： Markus Christoph ,  Tim Haulick ,  Gerhard Schmidt

IPC: G10K11/16

CPC classification number: H04R3/02 ,  G10K11/178 ,  G10K2210/503 ,  G10K2210/506 ,  H04R2499/13

Abstract: System and method for improving the acoustical communication between interlocutors in at least two positions in a room, comprising generating electrical signals representative of acoustical signals present at the respective interlocutor positions; amplifying each of said electrical signals; and converting said amplified electrical signals into acoustical signals; wherein said electrical signals are each delayed with a delay time such that the acoustical signal arriving first at one of the interlocutor positions originates from the direction of the other interlocutor position.

Abstract translation: 一种用于改善房间中至少两个位置的对话者之间的声学​​通信的系统和方法，包括产生表示存在于各个对讲机位置的声学信号的电信号; 放大每个所述电信号; 并将所述放大的电信号转换成声信号; 其中所述电信号各自以延迟时间延迟，使得首先到达对话者位置中的一个的声信号来自另一个对话者位置的方向。

公开(公告)号：US20070291952A1

公开(公告)日：2007-12-20

申请号：US11761786

申请日：2007-06-12

Applicant: Georg Spielbauer ,  Max Ganger ,  Markus Christoph

Inventor： Georg Spielbauer ,  Max Ganger ,  Markus Christoph

IPC: H04R5/00

CPC classification number: H04R29/00 ,  H04R2499/13

Abstract: A testing system tests an audio connection between an audio source and a loudspeaker. The system includes a loudspeaker that converts a reference signal into a sound. An adaptive filter processes the reference signal to minimize an error signal. A decision circuit analyzes the error signal and the received signal to determine signal correlation. When the signals are not correlated, a defect is detected.

Abstract translation: 测试系统测试音频源和扬声器之间的音频连接。 该系统包括将参考信号转换成声音的扬声器。 自适应滤波器处理参考信号以最小化误差信号。 判决电路分析误差信号和接收信号，以确定信号相关性。 当信号不相关时，检测到缺陷。

公开(公告)号：US07302062B2

公开(公告)日：2007-11-27

申请号：US11085807

申请日：2005-03-21

Applicant: Markus Christoph

Inventor： Markus Christoph

IPC: H03G3/20 ,  H04B1/00

CPC classification number: H03G9/005 ,  H03G3/32 ,  H03G9/025 ,  H03G9/14

Abstract: An audio enhancement system for compensating for ambient noise in a listening environment, comprises an audio system that produces an electrical sound signal and generates a sound output from the electrical sound signal. A sensor (e.g., a microphone) senses a total sound signal representative of the total sound level in the listening environment, including the sound output from the audio system and the ambient noise within the listening environment. A processing unit responsive to the total sound signal and the electrical sound signal extracts from the total sound signal an ambient noise signal representative of the ambient noise in the listening environment. A controller responsive to the ambient noise signal performs a linear predictive coding (LPC) analysis and generates a control signal, which is input to an equalizer to adjust the sound output of the audio system in order to compensate for the ambient noise level.

Abstract translation: 一种用于在收听环境中补偿环境噪声的音频增强系统，包括产生电声信号并从电声信号产生声音输出的音频系统。 传感器（例如，麦克风）感测表示听音环境中的总声音水平的总声音信号，包括来自音频系统的声音输出和听音环境中的环境噪声。 响应于总声音信号和电声信号的处理单元，从总声音信号中提取代表听觉环境中的环境噪声的环境噪声信号。 响应于环境噪声信号的控制器执行线性预测编码（LPC）分析，并产生控制信号，该控制信号被输入到均衡器以调整音频系统的声音输出，以补偿环境噪声水平。

公开(公告)号：US07277022B2

公开(公告)日：2007-10-02

申请号：US10488697

申请日：2001-09-06

Applicant: Markus Christoph ,  Christian Plankl

Inventor： Markus Christoph ,  Christian Plankl

IPC: G08B23/00

CPC classification number: B60R21/01 ,  B60R2021/01006 ,  F16B21/09

Abstract: The invention relates to a sensor device containing a housing (1) and a spring element (9) comprising a guiding element (5) for displacing the sensor device over a mounting plate (7) in a guided manner. Said guiding element (5) co-operates with a guiding means (12) of the mounting plate (7). In a mounting position of the sensor device, said sensor device engages in the mounting plate (7) and is fixed to the same.

Abstract translation: 本发明涉及包含壳体（1）和弹簧元件（9）的传感器装置，弹簧元件（9）包括用于以传导方式将传感器装置移动到安装板（7）上的引导元件（5）。 所述引导元件（5）与安装板（7）的引导装置（12）配合。 在传感器装置的安装位置，所述传感器装置接合在安装板（7）中并固定在其上。

公开(公告)号：US20060259531A1

公开(公告)日：2006-11-16

申请号：US11434496

申请日：2006-05-15

Applicant: Markus Christoph

Inventor： Markus Christoph

IPC: G06F17/10

CPC classification number: H03H21/0012 ,  H03H21/0014 ,  H03H2021/0041 ,  H03H2021/0092

Abstract: An audio enhancement system is provided for compensating for distortions (e.g., linear distortions) of a sound signal reproduced by an audio system in a listening room. The audio enhancement system includes analysis filters that generate a plurality of analysis output signals from an audio signal to be enhanced. The system also includes synthesis filters that generate an enhanced audio signal from a number of synthesis input signals. The number of analysis output signals and the number of synthesis input signals preferably are equal. Signal processing elements between the analysis filters and the synthesis filters generate one of the synthesis input signals from a respective one of the analysis output signals to perform an inverse filtering for linearizing an unknown transfer function indicative of the audio system and the listening room in the respective frequency range.

Abstract translation: 提供了一种音频增强系统，用于补偿由听音室中的音频系统再现的声音信号的失真（例如，线性失真）。 音频增强系统包括从要增强的音频信号产生多个分析输出信号的分析滤波器。 该系统还包括从多个合成输入信号产生增强音频信号的合成滤波器。 分析输出信号的数量和合成输入信号的数量优选地相等。 分析滤波器和合成滤波器之间的信号处理元件产生来自分析输出信号中的相应一个的合成输入信号之一，以执行逆滤波，以将表示音频系统的未知传输函数和收听室线性化 频率范围。