High MLD for ParamMC 5.1 at 80 kbps with +10dB Input gain
# Basic info
<!--- Add commit SHA used to reproduce -->
- Float reference:
- Encoder (float): 5067d70d9e07f9d37821ac5c9e9847a6f54de061
- Decoder (float): 5067d70d9e07f9d37821ac5c9e9847a6f54de061
- Fixed point:
- Encoder (fixed): f504151108d871c5a1e0026532e75cebd6338092
- Decoder (fixed):
# Bug description
The fixed point encoded output has almost 2 LUFS higher loudness than the float reference, visually inspecting the spectrogram shows a potential problem with scaling of values:
Float reference (-5.15 LUFS):
{width=835 height=576}
Fixed point encoder (-3.30 LUFS):
{width=839 height=580}
These signals have a very high MLD of 31.67.
# Ways to reproduce
Input vector has been uploaded.
Box folder: ...\Box_EXTERNAL_IVAS_BASOP_VERIFICATION\issues\issue-1267
<!-- Commandline or script -->
```bash
./IVAS_cod_fx -mc 5_1 -max_band FB 80000 48 bm2aa1s12_48.10dB.wav bit
./IVAS_dec_flt_ref 5_1 48 bit out.wav
```
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issue