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    • 4. 发明授权
    • Pressure sensor having a pressure measuring cell with a platform and a measuring membrane
    • 压力传感器具有带有平台和测量膜的压力测量单元
    • US07448274B2
    • 2008-11-11
    • US10566364
    • 2004-07-16
    • Ulfert DrewesKarl FloegelFrank HegnerThomas UehlinRainer Martin
    • Ulfert DrewesKarl FloegelFrank HegnerThomas UehlinRainer Martin
    • G01L7/00
    • G01L19/003
    • A pressure sensor including: A pressure measuring cell having an end face loadable with the medium; a housing having a media opening and a ring-shaped, axial bearing surface, which surrounds the media opening; a clamping apparatus; and a ring-shaped sealing arrangement. The pressure measuring cell is positioned in the housing and the sealing arrangement is positioned between the bearing surface and the end face, and the sealing arrangement, as well as the pressure measuring cell, are axially clamped between the bearing surface and the clamping apparatus. The sealing arrangement includes, a decoupling ring, as well as a first and a second, ring-shaped sealing element. The first sealing element lies against the end face, the second sealing element lies against the bearing surface, and the decoupling ring is axially clamped between the first and the second sealing elements.
    • 一种压力传感器,包括:压力测量单元,其具有可与介质一起装载的端面; 壳体,其具有介质开口和围绕介质开口的环形的轴向支承表面; 夹紧装置; 和环形密封装置。 压力测量单元位于壳体中,并且密封装置位于支承表面和端面之间,并且密封装置以及压力测量单元被轴向地夹紧在支承表面和夹紧装置之间。 密封装置包括脱钩环以及第一和第二环形密封元件。 第一密封元件靠在端面上,第二密封元件位于支承表面上,并且解耦环被轴向夹紧在第一和第二密封元件之间。
    • 6. 发明授权
    • Speech signal processing device with continuous monitoring of
signal-to-noise ratio
    • 具有连续监测信噪比的语音信号处理装置
    • US5572621A
    • 1996-11-05
    • US308768
    • 1994-09-19
    • Rainer Martin
    • Rainer Martin
    • G10L15/00G10L15/20G10L21/02H04B7/26H04M1/00H04M1/60G10L3/02
    • G10L21/0208G10L2021/02166
    • A mobile radio set includes a speech processing device for processing digital samples (x(i)) of speech signals which have noise components as well as speech components. Such device includes a control unit for continuously forming estimates of the signal-to-noise ratio of the speech signals by determining and smoothing the power values of the samples thereof, and determining the minimum of each successive group of L smoothed power values. The groups uninterruptedly succeed each other and each contains a sufficient number of smoothed power values so that all the values of a single group associated with a random phoneme of the speech signal can be combined. An estimate of the present signal-to-noise ratio is formed based on the present smoothed power value and the most recently determined minimum successive smoothed power value.
    • 移动无线电设备包括用于处理具有噪声分量以及语音分量的语音信号的数字样本(x(i))的语音处理设备。 这种设备包括一个控制单元,用于通过确定和平滑其样本的功率值并确定每个连续的L个平滑功率值组的最小值来连续地形成语音信号的信噪比的估计。 这些组不间断地相互成功,并且每个包含足够数量的平滑功率值,使得可以组合与语音信号的随机音素相关联的单个组的所有值。 基于当前平滑功率值和最近确定的最小连续平滑功率值形成当前信噪比的估计。
    • 8. 发明授权
    • Method for determining unbiased signal amplitude estimates after cepstral variance modification
    • 倒谱方差修正后确定无偏信号幅度估计的方法
    • US08208666B2
    • 2012-06-26
    • US12684147
    • 2010-01-08
    • Timo GerkmannRainer Martin
    • Timo GerkmannRainer Martin
    • H04R25/00
    • G10L21/0208G10L25/24
    • A method for determining unbiased signal amplitude estimates () after cepstral variance modification of a discrete time domain signal (s(t)), wherein the cepstrally-modified spectral amplitudes () of the discrete time domain signal (s(t)) are χ-distributed with 2{tilde over (μ)} degrees of freedom. A bias reduction factor (r) is determined using the equation r 2 = μ μ ~ ⁢ ⅇ ψ ⁡ ( μ ~ ) - ψ ⁡ ( μ ) , where 2μ are the degrees of freedom of the χ-distributed spectral amplitudes of the discrete time domain signal (s(t)) and ψ ⁡ ( x ) = - 0.5772 - ∑ n = 0 ∞ ⁢ ( 1 x + n - 1 1 + n ) ; then the unbiased signal amplitude estimates () are determined by multiplying the cepstrally-modified spectral amplitudes () with the bias reduction factor (r) according to the equation =r. A method for speech enhancement and a hearing aid use the method for determining unbiased signal amplitude estimates () in order to offer the advantage of spectral modification, such as smoothing, of spectral quantities without affecting their signal power.
    • 一种用于确定离散时域信号(s(t))的倒谱方差修正后的无偏信号幅度估计()的方法,其中离散时域信号(s(t))的经频谱修正的频谱幅度(χ)为χ 分布为2(波形)超过(μ)}自由度。 使用等式r 2 =μμ〜ψψ(μ〜)-ψ⁡(μ)确定偏置约简因子(r),其中2μ是离散时间的χ分布频谱幅度的自由度 域信号(s(t))和ψ⁡(x)= - 0.5772 - Σn = 0∞(1 x + n - 1 1 + n) 那么无偏信号幅度估计()通过将倒频修正的频谱幅度()与偏置简化因子(r)相乘来确定,方程式= r。 用于语音增强和助听器的方法使用用于确定无偏信号幅度估计()的方法,以便提供频谱修改的优点,例如频谱量化的平滑,而不影响其信号功率。
    • 9. 发明申请
    • Pressure sensor
    • 压力传感器
    • US20070028696A1
    • 2007-02-08
    • US10566364
    • 2004-07-16
    • Ulfert DrewesKarl FloegelFrank HegnerThomas UehlinRainer Martin
    • Ulfert DrewesKarl FloegelFrank HegnerThomas UehlinRainer Martin
    • G01L7/00
    • G01L19/003
    • A pressure sensor including: A pressure measuring cell having an end face loadable with the medium; a housing having a media opening and a ring-shaped, axial bearing surface, which surrounds the media opening; a clamping apparatus; and a ring-shaped sealing arrangement. The pressure measuring cell is positioned in the housing and the sealing arrangement is positioned between the bearing surface and the end face, and the sealing arrangement, as well as the pressure measuring cell, are axially clamped between the bearing surface and the clamping apparatus. The sealing arrangement includes, a decoupling ring, as well as a first and a second, ring-shaped sealing element. The first sealing element lies against the end face, the second sealing element lies against the bearing surface, and the decoupling ring is axially clamped between the first and the second sealing elements.
    • 一种压力传感器,包括:压力测量单元,其具有可与介质一起装载的端面; 壳体,其具有介质开口和围绕介质开口的环形的轴向支承表面; 夹紧装置; 和环形密封装置。 压力测量单元位于壳体中,并且密封装置位于支承表面和端面之间,并且密封装置以及压力测量单元被轴向地夹紧在支承表面和夹紧装置之间。 密封装置包括脱钩环以及第一和第二环形密封元件。 第一密封元件靠在端面上,第二密封元件位于支承表面上,并且解耦环被轴向夹紧在第一和第二密封元件之间。