A design method of low-pass digital filter with variable bandwidth
A digital filter and sub-filter technology, applied in the direction of digital technology network, impedance network, electrical components, etc., can solve the problem of finite length of unit sampling response
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[0059] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings, so that those skilled in the art can better understand the present invention. It should be noted that in the following description, when detailed descriptions of known functions and designs may dilute the main content of the present invention, these descriptions will be omitted here.
[0060] 1. Design criteria for low-pass digital filter with variable bandwidth
[0061] The implication of each parameter in the bandwidth variable low-pass digital filter design criterion of the present invention, as figure 2 shown.
[0062] Criterion 1: Cutoff Frequency Criterion
[0063] Δ c = max ω L ω c ω u |...
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