Farrow structure time delay filter (or filter bank). And how is a signal delayed through a filter?

how to use matlab to code Farrow structure time delay filter (or filter bank), or use Function in Matlab in dfilt.farrowfd and fdesign.fracdelay to delay a signal.

For example, how to delay tau in a signal x(t)=exp(j*2*pi*(t-tau).^2) , and tau is a fraction delay, like tau=1.4*(1/fs).