Add changes for stereo_dft_dec_read_BS
pytests results:
358 failed, 227 passed, 381 skipped
MLD scores:
Original inputs: (15 cases > 5)
5.372415 5.437779 6.304019 6.472261 6.565629 7.565572 8.595529 9.195169 10.4756 10.830501 10.842867 10.853147 12.420329 20.189423 22.510803
+10dB scaled inputs: (42 cases > 5)
5.256799 5.377783 5.660451 5.660451 5.788136 5.854036 6.00994 6.016709 6.327019 6.437214 6.549967 6.617329 6.655695 6.66685 6.970178 7.046759 7.335958 7.405486 7.452415 7.780335 7.85786 8.151115 8.255428 9.01248 9.48319 10.500535 10.750745 10.750745 10.811206 11.20555 11.334347 12.846323 14.461807 15.203362 16.605892 16.975492 17.616671 19.3745 19.761244 23.820694 27.369099 51.714298
-10dB scaled inputs: (8 cases > 5)
5.023561 5.062582 5.964681 5.985353 6.009333 9.043926 14.817977 15.980318