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Create distortion_filter.m

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Jason Liang 2021-12-09 01:10:08 -08:00 committed by GitHub
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% An audio is distorted based on the value of HIGH. Nothing of a certain
% threshold should be played above this constant, or they are simply clipped to this
% value. Inspired from Meghaj_Echo.m and epic_effect_schluep.m.
% Author: Jason Liang
function y = distortion_filter(x, HIGH)
len = length(X);
X = fft(x);
X = fftshift(X);
Y = zeros(1, len);
for ind = 1:len
if (X(ind) > HIGH)
Y(ind) = HIGH;
elseif (X(ind) < -HIGH)
Y(ind) = -HIGH;
else
Y(ind) = X(ind);
end
end
Y = fftshift(Y);
y = ifft(Y);
y = real(y);
end