This program is used to calculate the average power of a voice signal
%Function to calculate the Average of a Voice signal function[y] = pow_1(x)
N = length(x); % Length of voice signal 'x'
xold =0.0; %initialize it to zero for n = 1:N
sumx = xold+(x(n)^2);
xold = sumx; end
y = sumx/N