?? db2delta.m
字號:
function [d1,d2] = db2delta(Rp,As)
% Conversion from Relative dB specs to Absolute delta specs.
% ----------------------------------------------------------
% [d1,d2] = db2delta(Rp,As)
% d1 = Passband tolerance
% d2 = Stopband tolerance
% Rp = Passband ripple
% As = Stopband attenuation
%
K = 10^(Rp/20);
d1 = (K-1)/(K+1);
d2 = (1+d1)*(10^(-As/20));
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