Ariff Abdullah eedb75f16b Remap type of polynomial interpolators for better polyphase
coefficients quality:
- Linear interpolator for oversampling factor larger and equal
  than 4096 (log2 = 12).
- Quadratic interpolator for oversampling factor larger and equal
  than 256 (log2 = 8).

Default oversampling factor (128 ~ log2 = 7) will use OPT32X, which
provides better accuracy.
2009-06-15 04:05:38 +00:00
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