Creating a Array of binary values

I'm trying to do the quantization of a wav file on Matlab, but I'm struggling to get this function right.

Quant = zeros(1,length(y));

Q = peak2peak(y);

N = 2^8;

Delta = double(Q)/double(N); %Analog aproximation of each value on y

Faixa = 0:Delta:double(Q)-Delta;  %Array of 256 analog values

    for k1 = 1:length(y)

        for k2 = 1:N-1

            if (y(k1)>Faixa(k2) && y(k1)<=Faixa(k2+1)) 

                Quant(k1) = dec2bin(k2,8);  %Saving on array Quant the binary value corresponding to its analog comparison
                break

            end
        end
  end

Y has 16000 values, and I'm getting the following message: In an assignment A(I) = B, the number of elements in B and I must be the same.

[Matthew Eicholtz]

The reason you are getting that error is because you are trying to store an 8-bit binary string (dec2bin(k2,8)) in a double array index with 1 row ( Quant(k1)). MATLAB does not like this.

I'm not sure what you want Quant to look like, but 2 options are:

1. Make Quant a cell array of length(y) and store the binary strings in each cell.
2. Make Quant have 8 rows (or columns depending on your desires), and store the 8-bits that way.