Substantial spectral distortion observed with test_param_file_tests[ltv-OSBA FOA 3ISM at 128 kbps, 48kHz in, 48kHz out, 7_1_4 out]

main branch commit sha: d670bf4f

ivas-float-update branch commit sha: d9fdb374

Below is a plot of the spectral difference between the fixed-point and floating-point output in channel 2 between sample 65e5 to 70e5. The signal scaling is 3.162. The same spectral difference were also observed with signal scale 1.0 and 0.3162