- Do aggresive saturation on various polynomial interpolators.   This dramatically pushing 99.9% interpolations and quantizations   error _below_ -180dB on 32bit dynamic range, resulting extremely   high quality conversion. - Use BSPLINE interpolator for filter oversampling factor greater or   equal than 64 (log2 6).
- Do aggresive saturation on various polynomial interpolators.
  This dramatically pushing 99.9% interpolations and quantizations
  error _below_ -180dB on 32bit dynamic range, resulting extremely
  high quality conversion.
- Use BSPLINE interpolator for filter oversampling factor greater or
  equal than 64 (log2 6).

Approved by:	re (kib)

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase