= bit layout in frame

v20 - first 20 bits (protected) (bits 0-19)
v100 - unprotected 100 bit (bits 20-119)

 - decimation value in v20
   suspicious pattern of 3 columns of size 5b at the end of v20

 - there are groups of 23,22,23 bits at the end of frame
   (shows as a symetry on white noise signals)

bits 5:19 are very likely composition of 3 groups of 5b
 - bit 5 look a bit deviated from expected pattern
patterns:
   *dd...dd...dd

bits 0, 1:
  - are anticorrelated when counting number of 0/1 occurences

bits 2, 3, 4:
  - correlate in occurence of number of 1/0, the middle column tends to
    have a lot of zeros (for noise signal), whereas side columns are 1
    all the time

bits 5:19
  - probably grouped as a 1,2,2 or 2,2,1 bits, repeats 3 times

bits 8, 13, 18:
  - correlate
  - their value is more likeli 1 for higher voice volume (tested on white noise)


== layout hypothesis

0:4 - LARs
5:19 - 3*(2+2+1 or 1+2+2)b
20:51 - LARs
52:119 - 23 + 22 + 23

