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    APPARATUS FOR MEASURING LOOP IMPEDANCE AND CORRESPONDING METHOD
    12.
    发明公开
    APPARATUS FOR MEASURING LOOP IMPEDANCE AND CORRESPONDING METHOD 审中-公开

    公开(公告)号：EP4184179A1

    公开(公告)日：2023-05-24

    申请号：EP22020563.7

    申请日：2022-11-16

    申请人： Uniks S.r.l.

    发明人： Scuro, Francesco ,  Ronconi, Stefano

    IPC分类号： G01R15/12 ,  G01R27/16 ,  G01R19/25 ,  G01R19/252 ,  G01R23/167

    摘要： An apparatus (10) for measuring loop impedance comprises a differential amplifier (1) suitable for conditioning a Vgen input signal, a controlled current generator (5) capable of making an Igen current signal flow between two measuring terminals A, B, and a microcontroller (6) set up for acquisition of the signals, for processing the signals and for controlling the current generator (5). The microcontroller (6) comprises a frequency selector (2), suitable for analysis of the Vgen signal for identifying frequencies which are free of network interference in such a way as to generate the Igen current signal at a frequency identified, a digital filter (3) suitable for extracting the component of Vgen derived from application of the Igen current signal, and processing means (4) suitable for supplying the impedance measurement.

    AUDIO FILTERS UTILIZING SINE FUNCTIONS
    15.
    发明公开
    AUDIO FILTERS UTILIZING SINE FUNCTIONS 审中-公开
    音频滤波器利用正弦函数

    公开(公告)号：EP2982134A1

    公开(公告)日：2016-02-10

    申请号：EP14774918.8

    申请日：2014-03-26

    申请人： Barratt, Lachlan Paul

    发明人： Barratt, Lachlan Paul

    IPC分类号： H04R1/20 ,  H03H17/00 ,  G01R23/167 ,  G06F17/17

    CPC分类号： H04R3/04 ,  G06F3/165 ,  G06T5/00 ,  G06T2207/20024 ,  G06T2207/20172 ,  G10L21/0332 ,  H03H17/0248 ,  H03H17/0266 ,  H03H17/0286 ,  H03H17/0657 ,  H04R1/22

    摘要： A method of digitally filtering an audio signal using an adjusted audio filter. The adjusted audio filter is represented by an impulse response including a waveform in its time domain represented by a sine function of absolute values. A composite audio filter is derived from two adjusted audio filters although any number of filters may be used. The composite audio filter generally includes a bank of the filters which together define a frequency bandwidth representative of the audio signal or spectrum to be filtered. Also a bandpass filter is constructed by combining frequency responses for sine components of absolute values integrated from 0 to bpf and sine components of absolute values integrated from 1/bpf to 0. The frequency response may be the sum of the frequency responses for each of the filters used to create the composite bandpass filter.

    摘要翻译： 一种使用调整后的音频滤波器对音频信号进行数字滤波的方法。 经调整的音频滤波器由脉冲响应表示，该脉冲响应包括由绝对值的正弦函数表示的其时域中的波形。 虽然可以使用任意数量的滤波器，但是复合音频滤波器是从两个经过调节的音频滤波器派生的 复合音频滤波器通常包括一组滤波器，它们一起限定代表要滤波的音频信号或频谱的频率带宽。 通过组合从0到bpf积分的绝对值的正弦分量和从1 / bpf到0积分的绝对值的正弦分量的频率响应来构造带通滤波器。频率响应可以是每个频率响应的总和 用于创建复合带通滤波器的滤波器。

    PERIODIC TIME SEGMENT SEQUENCE BASED DECIMATION
    16.
    发明公开
    PERIODIC TIME SEGMENT SEQUENCE BASED DECIMATION 审中-公开
    周期性时段基于序列抽取

    公开(公告)号：EP2906959A1

    公开(公告)日：2015-08-19

    申请号：EP13845352.7

    申请日：2013-10-10

    申请人： Nienaber, David

    发明人： Nienaber, David

    IPC分类号： G01R23/167

    CPC分类号： H04L1/206 ,  G01R23/167 ,  H03D1/00 ,  H03D2200/006 ,  H03D2200/0062 ,  H04B1/0021 ,  H04B1/06 ,  H04B2001/0491 ,  H04L1/08

    摘要： Values representative of modulation signal components are extracted from a modulated signal. The modulated signal contains a modulation signal. A local clock signal is developed which correlates in time to the modulated signal and has a plurality of non-overlapping phase sectors per cycle. The modulated signal is accumulated into an accumulated value, separately for at least one phase sector of one cycle of the local clock signal. Each accumulated value is representative of a modulation signal component. The modulated signal accumulated is of an amount representative of the mathematical integral of the modulated signal during each phase sector of the local clock over which the modulated signal is accumulated.

    REKONSTRUKTION VON ORIGINALSIGNALEN AUS RELATIVMESSUNGEN
    17.
    发明公开
    REKONSTRUKTION VON ORIGINALSIGNALEN AUS RELATIVMESSUNGEN 审中-公开
    重建原始信号从相对测量的

    公开(公告)号：EP1543439A1

    公开(公告)日：2005-06-22

    申请号：EP03798108.1

    申请日：2003-08-19

    申请人： DB Netz Aktiengesellschaft

    发明人： WOLTER, Klaus-Ulrich

    IPC分类号： G06F17/00 ,  G01D3/02 ,  G01R23/167 ,  B61K9/08 ,  H03H21/00

    CPC分类号： B61K9/08 ,  E01B35/12 ,  H03H17/0213 ,  H03H17/04

    摘要： The invention relates to a method for reconstruction of original signals from relative measurements. According to the invention, the amplitude distortion in a measuring system is exactly compensated by a compensation filter, whereby the compensation filter is unequivocally determined by the measuring system. The described system function of the measuring system may be inverted with minimal dephasing, whereby all zero points lying outside the unity circle are mirrored about the unity circle and thus arrive within the unity circle. Examples of advantageous application are the reconstruction of measurements from a Wandersehnen method and for the reconstruction of track bed measurements in rail traffic.

    PROCEDE ET DISPOSITIF D'ANALYSE D'UN SIGNAL AUDIO NUMERIQUE
    18.
    发明公开
    PROCEDE ET DISPOSITIF D'ANALYSE D'UN SIGNAL AUDIO NUMERIQUE 审中-公开
    方法和设备的数字音频信号分析

    公开(公告)号：EP1373908A1

    公开(公告)日：2004-01-02

    申请号：EP02720088.0

    申请日：2002-03-29

    申请人： Sigtone S.A.

    发明人： Vrazic, Sacha,c/o Cabinet Hautier

    IPC分类号： G01R23/167 ,  H03H17/02

    CPC分类号： G01R23/167 ,  H03H17/0266

    摘要： The invention concerns a device and a method for analysing a digital audio signal (C) for use for identifying musical notes present in a sound, audio or musical signal. The invention is characterised in that the method consists in: creating filters (7) having different bandwidths each corresponding to a frequency interval including the frequency (fi) of a musical note to be identified, the set covering the frequency range to be analysed; filtering the digital audio signal (C) using the created filters arranged in a filter bank (5) to break down the digital audio signal (C) into as many output signals as there are filters (7) in the bank (5), each of the output signal (Fi) corresponding to a musical note to be identified so as to produce a projection of the digital audio signal (C) into a time-frequency base.

    Spectrum analysis and display method of time series data of living organism
    19.
    发明公开
    Spectrum analysis and display method of time series data of living organism 审中-公开
    Spektralanalyse und Bilddarstellungsverfahren vonzeitabhängigenDaten von Lebewesen

    公开(公告)号：EP1109027A1

    公开(公告)日：2001-06-20

    申请号：EP99403153.2

    申请日：1999-12-15

    申请人： GRAM CORPORATION

    发明人： Asano, Fumitaka

    IPC分类号： G01R23/167

    CPC分类号： A61B5/04017 ,  A61B5/0452 ,  A61B5/0464 ,  A61B5/725 ,  A61B5/7253 ,  G01R23/167

    摘要： Even when a time series data varies in a relatively short period of time as is in a series of signals issued from a living organism, it is possible for the present invention to have a doctor precisely grasp variations in amplitude of even a weak one of frequency components of the time series data. In order to decompose the time series data into a plurality of the frequency components according to the present invention, a set of band pass filters are prepared. The band pass filters have their cut-off frequencies shifted or offset from each other by their passing band widths, respectively. The individual band pass filters process the time series data to produce such frequency components. These frequency components are then sampled in amplitude at predetermined time intervals. The thus sampled amplitudes of the frequency components are transformed into corresponding densities of a predetermined color including a gray color according to a predetermined color scale or a predetermined gray scale, and then displayed on a display screen on the basis of a time base of the display screen.

    摘要翻译： 即使当时间序列数据在从生物体发出的一系列信号中在相当短的时间段内变化时，本发明也可以使医生精确地掌握甚至弱频率的振幅变化 时间序列数据的组件。 为了根据本发明将时间序列数据分解成多个频率分量，准备了一组带通滤波器。 带通滤波器的截止频率分别通过其通带宽度彼此偏移或偏移。 单个带通滤波器处理时间序列数据以产生这样的频率分量。 然后以预定的时间间隔在幅度上采样这些频率分量。 将这样采样的频率成分的振幅根据预定的颜色标度或预定的灰度变换为包括灰色的预定颜色的相应浓度，然后根据显示器的时基显示在显示屏幕上 屏幕。