发明名称 Precision measurement of waveforms using deconvolution and windowing
摘要 The invention consists of new ways of constructing a Measuring Matrices (MMs) including time deconvolution of Digital Fourier Transforms DFTs. Also, windowing functions specifically designed to facilitate time deconvolution may be used, and/or the DFTs may be performed in specific non-periodic ways to reduce artifacts and further facilitate deconvolution. These deconvolved DFTs may be used alone or correlated with other DFTs to produce a MM.
申请公布号 US9390066(B2) 申请公布日期 2016.07.12
申请号 US201013509427 申请日期 2010.11.11
申请人 Digital Harmonic LLC 发明人 Smith Paul Reed;Smith Jack W.;Slay Frederick M.
分类号 G06F17/14;G10L25/00;G10L25/18 主分类号 G06F17/14
代理机构 Sterne, Kessler, Goldstein & Fox PLLC 代理人 Sterne, Kessler, Goldstein & Fox PLLC
主权项 1. A method implemented on a computer having one or more processors and one or more memory devices, the method comprising: receiving an input signal in the form of a digital waveform signal, wherein the input signal comprises a plurality of amplitude values, and each amplitude value having a corresponding time value; selecting, by a measurement engine, a series of overlapping time windows from the input signal, wherein each window has a beginning and an end, thereby defining time slices each indexed by an integer M, wherein a given time slice is a difference between the beginning of one window having index M and that of another having index M−1, or the difference between the end of one window having index M and that of another having index M−1; transforming, by the measurement engine, using a decaying exponential windowing function on each time window in the series of overlapping time windows, the corresponding time and amplitude values into a plurality of transformed amplitude values, each associated with a corresponding frequency, to thereby form a first matrix indexed by the time slices and frequencies; performing, by the measurement engine, time-domain deconvolution on the plurality of transformed amplitude values for each frequency index to thereby form a second matrix of deconvolved amplitude values indexed by the time slices and frequencies; determining, by a comparing engine, a plurality of maxima and minima values in the second matrix; marking, by a marking engine, the determined plurality of maxima and minima values to thereby form a measuring matrix indexed by the time slices and frequencies; and outputting the measuring matrix to thereby reveal information associated with the input signal, wherein outputting includes at least one of storing, displaying, or transmitting the measuring matrix; and wherein the engines are implemented using the one or more processors of the computer.
地址 Ellicott City MD US