function y = synth_ripple_plus(T);
% y=synth_ripple_plus - synthesize rippled noise with + sign


global sr;	% sampling rate


y = synth_noise;
yy = cat(2, synth_noise, y);

offset = size(y, 2) - T * sr;
y = y + yy(offset+1:offset+size(y, 2));