DokuWiki

This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong.
The coefficients for the polyphase filterbank are the following.
They are arranged as a [2*12][2*8] array. The first index (row) is the tap number and incremented by 12 for processing the second 8-sample-block, the second index is the number of the sample in the IDCT16 result, and incremented by 8 if generating the second 8 output samples. 

   coeffdata =
   1.0516783e-5   1.2660377e-8   3.5308560e-8   3.2262470e-8  -4.4400572e-8  -4.2005411e-7  -8.0604229e-7  -5.8336207e-7 | -1.1838618e-5   6.0053890e-7   1.4333754e-6   2.3108685e-6   3.2569742e-6   4.6192422e-6   6.3894258e-6   7.0302972e-6
   1.8111954e-6  -5.7168614e-7  -1.5432918e-6  -2.6336629e-6  -4.1712024e-6  -7.9212787e-6  -1.0502935e-5  -9.1622824e-6 |  2.3530851e-5   2.7805620e-5   3.2302323e-5   3.6968919e-5   4.1575615e-5   4.5337845e-5   4.6043948e-5   4.8585582e-5
  -5.8270442e-5  -6.2285151e-5  -7.0208509e-5  -7.4850752e-5  -7.6127850e-5  -7.3081472e-5  -6.8306952e-5  -6.4464548e-5 | -5.6296329e-5  -4.9888811e-5  -3.5615325e-5  -1.8532943e-5   1.6657353e-6   2.6105870e-5   5.3397067e-5   8.0795660e-5
  -1.8248901e-4  -2.6866337e-4  -3.4301577e-4  -4.0612387e-4  -4.5778000e-4  -4.9731287e-4  -5.2537228e-4  -5.4488552e-4 | -8.4307925e-5   2.5081157e-5   1.4135583e-4   2.6649953e-4   3.9945057e-4   5.3928449e-4   6.8422867e-4   8.3093712e-4
   5.2769453e-4   1.5771533e-4  -1.8855913e-4  -5.0782406e-4  -7.9780724e-4  -1.0566821e-3  -1.2832270e-3  -1.4771431e-3 |  9.1862219e-4   1.3263570e-3   1.7469483e-3   2.1754825e-3   2.6067684e-3   3.0352892e-3   3.4549395e-3   3.8591374e-3
   5.5614738e-3   4.1943151e-3   2.8992873e-3   1.6828950e-3   5.5068987e-4  -4.9266568e-4  -1.4435460e-3  -2.2995141e-3 |  6.9935122e-3   8.4823566e-3   1.0018963e-2   1.1593862e-2   1.3196872e-2   1.4817309e-2   1.6444042e-2   1.8065533e-2
  -3.0518902e-2  -3.1467363e-2  -3.2295227e-2  -3.2995768e-2  -3.3563249e-2  -3.3992987e-2  -3.4281436e-2  -3.4426283e-2 | -2.9457660e-2  -2.8291954e-2  -2.7031265e-2  -2.5685543e-2  -2.4265358e-2  -2.2781773e-2  -2.1246184e-2  -1.9670162e-2
  -5.7142610e-3  -5.6034233e-3  -5.4091476e-3  -5.1268316e-3  -4.7529764e-3  -4.2847847e-3  -3.7203205e-3  -3.0586775e-3 | -5.7445862e-3  -5.7025906e-3  -5.5920109e-3  -5.4194843e-3  -5.1914565e-3  -4.9146507e-3  -4.5959447e-3  -4.2418269e-3
  -1.8990048e-3  -1.9450618e-3  -1.9653172e-3  -1.9593791e-3  -1.9252141e-3  -1.8608454e-3  -1.7651899e-3  -1.6376863e-3 | -1.8380800e-3  -1.7501717e-3  -1.6481078e-3  -1.5320742e-3  -1.4046903e-3  -1.2685474e-3  -1.1258140e-3  -9.7943726e-4
  -4.2499689e-4  -4.5358928e-4  -4.8466062e-4  -5.1135791e-4  -5.3276919e-4  -5.4783461e-4  -5.5472925e-4  -5.5432378e-4 | -3.6942671e-4  -3.3926190e-4  -3.0001783e-4  -2.5986304e-4  -2.1972040e-4  -1.8116167e-4  -1.4691355e-4  -1.1279432e-4
  -2.9687517e-5  -3.6340745e-5  -3.9477309e-5  -4.2927582e-5  -4.7133824e-5  -5.4267788e-5  -6.1748680e-5  -6.4147389e-5 | -4.9787737e-5  -4.1577889e-5  -3.3864744e-5  -2.6534748e-5  -1.9841305e-5  -1.4789486e-5  -1.3131184e-5  -9.9198869e-6
  -1.2203576e-5  -2.1961965e-5  -2.1348773e-5  -1.9907106e-5  -1.7348082e-5  -1.1984052e-5  -7.2701259e-6  -6.2990207e-6 | -1.0840992e-5   4.6299544e-7   5.2588763e-7   2.7792686e-7  -2.3649704e-7  -1.0897784e-6  -9.1714480e-7  -5.2268200e-7
  -----------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------
   1.0840992e-5  -4.6299544e-7  -5.2588763e-7  -2.7792686e-7   2.3649704e-7   1.0897784e-6   9.1714480e-7   5.2268200e-7 | -1.2203576e-5  -2.1961965e-5  -2.1348773e-5  -1.9907106e-5  -1.7348082e-5  -1.1984052e-5  -7.2701259e-6  -6.2990207e-6
   4.9787737e-5   4.1577889e-5   3.3864744e-5   2.6534748e-5   1.9841305e-5   1.4789486e-5   1.3131184e-5   9.9198869e-6 | -2.9687517e-5  -3.6340745e-5  -3.9477309e-5  -4.2927582e-5  -4.7133824e-5  -5.4267788e-5  -6.1748680e-5  -6.4147389e-5
   3.6942671e-4   3.3926190e-4   3.0001783e-4   2.5986304e-4   2.1972040e-4   1.8116167e-4   1.4691355e-4   1.1279432e-4 | -4.2499689e-4  -4.5358928e-4  -4.8466062e-4  -5.1135791e-4  -5.3276919e-4  -5.4783461e-4  -5.5472925e-4  -5.5432378e-4
   1.8380800e-3   1.7501717e-3   1.6481078e-3   1.5320742e-3   1.4046903e-3   1.2685474e-3   1.1258140e-3   9.7943726e-4 | -1.8990048e-3  -1.9450618e-3  -1.9653172e-3  -1.9593791e-3  -1.9252141e-3  -1.8608454e-3  -1.7651899e-3  -1.6376863e-3
   5.7445862e-3   5.7025906e-3   5.5920109e-3   5.4194843e-3   5.1914565e-3   4.9146507e-3   4.5959447e-3   4.2418269e-3 | -5.7142610e-3  -5.6034233e-3  -5.4091476e-3  -5.1268316e-3  -4.7529764e-3  -4.2847847e-3  -3.7203205e-3  -3.0586775e-3
   2.9457660e-2   2.8291954e-2   2.7031265e-2   2.5685543e-2   2.4265358e-2   2.2781773e-2   2.1246184e-2   1.9670162e-2 | -3.0518902e-2  -3.1467363e-2  -3.2295227e-2  -3.2995768e-2  -3.3563249e-2  -3.3992987e-2  -3.4281436e-2  -3.4426283e-2
  -6.9935122e-3  -8.4823566e-3  -1.0018963e-2  -1.1593862e-2  -1.3196872e-2  -1.4817309e-2  -1.6444042e-2  -1.8065533e-2 |  5.5614738e-3   4.1943151e-3   2.8992873e-3   1.6828950e-3   5.5068987e-4  -4.9266568e-4  -1.4435460e-3  -2.2995141e-3
  -9.1862219e-4  -1.3263570e-3  -1.7469483e-3  -2.1754825e-3  -2.6067684e-3  -3.0352892e-3  -3.4549395e-3  -3.8591374e-3 |  5.2769453e-4   1.5771533e-4  -1.8855913e-4  -5.0782406e-4  -7.9780724e-4  -1.0566821e-3  -1.2832270e-3  -1.4771431e-3
   8.4307925e-5  -2.5081157e-5  -1.4135583e-4  -2.6649953e-4  -3.9945057e-4  -5.3928449e-4  -6.8422867e-4  -8.3093712e-4 | -1.8248901e-4  -2.6866337e-4  -3.4301577e-4  -4.0612387e-4  -4.5778000e-4  -4.9731287e-4  -5.2537228e-4  -5.4488552e-4
   5.6296329e-5   4.9888811e-5   3.5615325e-5   1.8532943e-5  -1.6657353e-6  -2.6105870e-5  -5.3397067e-5  -8.0795660e-5 | -5.8270442e-5  -6.2285151e-5  -7.0208509e-5  -7.4850752e-5  -7.6127850e-5  -7.3081472e-5  -6.8306952e-5  -6.4464548e-5
  -2.3530851e-5  -2.7805620e-5  -3.2302323e-5  -3.6968919e-5  -4.1575615e-5  -4.5337845e-5  -4.6043948e-5  -4.8585582e-5 |  1.8111954e-6  -5.7168614e-7  -1.5432918e-6  -2.6336629e-6  -4.1712024e-6  -7.9212787e-6  -1.0502935e-5  -9.1622824e-6
   1.1838618e-5  -6.0053890e-7  -1.4333754e-6  -2.3108685e-6  -3.2569742e-6  -4.6192422e-6  -6.3894258e-6  -7.0302972e-6 |  1.0516783e-5   1.2660377e-8   3.5308560e-8   3.2262470e-8  -4.4400572e-8  -4.2005411e-7  -8.0604229e-7  -5.8336207e-7