发明名称 DIGITAL FILTER
摘要 <p>PURPOSE:To simply attain the elimination of waveform distortion by multiplying a filter function to a Fourier component so as to attain filtering. CONSTITUTION:A function f(x) with a variable domain of a<=x<=b comprising an input data string is transformed into a function g(x) for which the relation g(b)=g(a)=0 holes approximately and the function g(x) is subjected to Fourier integration to calculate the Fourier component G(omega). Then the Fourier component G(omega) subjected to filtering is Fourier inverse transformed to calculated a function gF(x) and the f(x) obtained by replacing the g(x) in the equation for obtaining f(x) from g(x) by gF(x) is calculated as fF(x), and the function fF(x) is used as the filter output. In this way even in the case of f(a)not equal to 0 or f(b)not equal to 0, the waveform distortion of the function f(x) is eliminated without newly deforming the waveform near x=a and b.</p>
申请公布号 JPH01160109(A) 申请公布日期 1989.06.23
申请号 JP19870318200 申请日期 1987.12.16
申请人 JAPAN SPECTROSCOPIC CO 发明人 SHIGEHISA MIYUKI
分类号 H03H17/02;G06F17/14 主分类号 H03H17/02
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