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    Measuring Waveforms With The Digital Infinite Exponential Transform
    1.
    发明申请
    Measuring Waveforms With The Digital Infinite Exponential Transform 审中-公开
    数字无限指数变换测量波形

    公开(公告)号：US20160112225A1

    公开(公告)日：2016-04-21

    申请号：US14885693

    申请日：2015-10-16

    申请人： Digital Harmonic LLC

    发明人： Frederick M. SLAY

    IPC分类号： H04L27/156

    CPC分类号： H04L27/156 ,  G01R23/16 ,  G06F17/14 ,  G10H2210/056 ,  G10H2250/215 ,  G10H2250/235 ,  G10H2250/251 ,  G10H2250/261 ,  G10L25/18 ,  G10L25/48

    摘要： A method is performed of selecting a signal of interest from a compound signal. The method includes generating a matrix and initializing a first row of the matrix to zero. The compound signal is obtained as a digital waveform signal, with sampling rate S samples per second. For each sample of the digital signal, a new entry is recursively computed for the matrix. For each frequency bin in the matrix (where f is the center frequency of the bin) the value in the new row is computed by multiplying the value for that bin in the previous row by the complex number r*ei2πf/S and adding the new signal sample multiplied by a real constant. The method includes identifying the signal of interest from the matrix, whereby an uncertainty of which frequency bin the signal of interest exists in is eliminated.

    摘要翻译： 执行从复合信号中选择感兴趣的信号的方法。 该方法包括生成矩阵并将矩阵的第一行初始化为零。 获得复合信号作为数字波形信号，采样速率S采样每秒。 对于数字信号的每个样本，对矩阵递归计算一个新的条目。 对于矩阵中的每个频率仓（其中f是仓的中心频率），新行中的值通过将上一行中的该仓的值乘以复数r * ei2＆pgr; f / S并添加 新信号样本乘以实常数。 该方法包括从矩阵中识别感兴趣的信号，由此消除了感兴趣的信号存在哪个频率bin的不确定性。

    LOW-NOISE VIBRATIONAL SPECTROSCOPY
    3.
    发明申请
    LOW-NOISE VIBRATIONAL SPECTROSCOPY 有权

    公开(公告)号：US20220228969A1

    公开(公告)日：2022-07-21

    申请号：US17711390

    申请日：2022-04-01

    申请人： Digital Harmonic LLC

    发明人： Paul Reed SMITH ,  William G. NELSON ,  Shane G.W. MORRIS ,  Sandor SZALAY ,  Jonathan B. COULTER ,  Frederick M. SLAY ,  Eric K. PRITCHARD

    IPC分类号： G01N15/14 ,  G01R23/02 ,  G01R23/16 ,  G06K9/00

    摘要： An optical device includes a low-noise illumination source, a support device, an ultra low-noise detector, an analog-to-digital converter, and a controller. The low-noise illumination source is configured to generate a single beam of radiation. The support device is configured to support an object and to pass the single beam of radiation through the object. The object directly blocks, absorbs, or deflects portions of the single beam of radiation, thereby directly modulating the single beam of radiation. The low-noise detector is configured to detect the modulated single beam of radiation and to output an analog signal representative of vibrational spectra of the object. The modulated single beam of radiation is non-interferometric. The analog-to-digital converter is configured to convert the detected analog signal into a digital signal. The controller is configured to analyze and generate vibrational spectra of the object from the digital signal represented as a range of events over time.