function [ qk ] = quant9( a )
%QUANT3_4 Summary of this function goes here
%   Detailed explanation goes here

%Uniform quantization to 2-bits
if ( abs(a) > 1)
    a = a / abs(a);
end

%Yields 0 to 4
qk = round(2*a) + 2;

%chop down to within the 2 bits.
if (qk == 4)
    qk = qk - 1;
end