CONV Convolution and polynomial multiplication.
C = CONV(A, B) convolves vectors A and B. The resulting
vector is length LENGTH(A)+LENGTH(B)-1.
If A and B are vectors of polynomial coefficients, convolving
them is equivalent to multiplying the two polynomials.
See also DECONV, CONV2, CONVN, FILTER and, in the Signal
Processing Toolbox, XCORR, CONVMTX.