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EVS decoder gives energy ramp at frame boundaries

Related to #724 (closed)

IVAS BASOP decoder commit: 1d5b4a21

EVS float encoded bitstream looks bad with IVAS BASOP decoder using EVS operation. Command lines:

../../EVS_3gpp/26443-h00/c-code/EVS_cod.exe 32000 48 sample.raw evs.192
../../EVS_3gpp/26452-h00/c-code/EVS_dec.exe       32 evs.192 evs.raw
CopyAudio -P integer16,,32000 evs.raw evs.wav # Convert to wav
IVAS_dec       32 evs.192 cut_evs.wav

Input sample is here: sample.raw

The EVS executables correspond to the precompiled executables available from 3GPP.

With the EVS 26.452 decoder the result looks like this image

while the IVAS BASOP decoder produces some energy modulation at the 20 ms frame boundaries image