function easily so that seems like a huge waste of bits especially if we want to transmit say integer data like images from CFR for example or it specifies its are specified as integers and we don't want to have to transmit lots of bits after the decimal point so the solution to this is to use those extra bits four bits back again and so if if you want to do that it turns out that there is an optimal way of doing this and it's and this sort of encoder that you use for that is a D quantizer which I think we talked