The filters were reducing the pass-band by 3dB each time the coefs were used.  Revised the coefficients for the filters.  Should keep the filters behaving as expected.
Added a todo list
Changed the output to make it compatible with the file reader module.
Finished the decimator.  Tested and ready.
Added and completed the interpolator.  Tested and ready.
Added the multirate filtering design.  May need further testing.