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ietf doc: removed duplicate paragraph in allocation section

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Jean-Marc Valin 2009-07-04 00:31:03 -04:00
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doc/ietf/draft-valin-celt-codec.xml
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@ -712,26 +712,6 @@ the lower prototype multiplied by the difference of 16 and the coefficient,
for each of the CELT bands.
</t>
<t>
For every encoded or decoded frame, a target allocation must be computed
using the projected allocation. In the reference implementation this is
performed by compute_allocation() (<xref
target="rate.c">rate.c</xref>). The target computation begins by first
calculating the available space as the number of whole bits which can be fit in the
frame after Q1 is stored according to the range coder (ec_[enc/dec]_tell())
and iff the frame has pitch prediction subtracting the number of pitch bands then multiplying
by 16. Then the two projected prototype allocations whose sum times 16 is nearest
to that value are determined. These two projected prototype allocations are then interpolated
by finding the highest integer interpolation coefficient in the range 0-16 such
that the sum of the
higher prototype times the coefficient, plus the sum of the lower prototype times
16 minus the coefficient, is less than or equal to the remaining sixteenth-bits.
The reference implementation performs this step using a binary search in
interp_bits2pulses() (<xref target="rate.c">rate.c</xref>). The target
allocation is the interpolation coefficient times the higher prototype, plus 16
minus the coefficient times the lower prototype, for each of the CELT bands.
</t>
<t>
Because the computed target will sometimes be somewhat smaller than the
available space, the excess space is divided by the number of bands, and this amount