Ding Dong(Remix Of )

More smooth and quicker ring. Sine expressionsin(2*pi*t*725)*exp(-t*5)*(1-exp(-t*30))+(step(t-5)-step(t-. 3))*sin(2*pi*(t-. 3)*565)*1. 3*exp(-(t-. 3)*5)*(1-exp(-(t-. 3)*30)).