Issue with VAD sensitivity in SBA DTX mode at 48 and 80 kbps
# Basic info
<!--- Add commit SHA used to reproduce-->
- Float reference:
- Encoder (float): 53594392095aa5d3b5ad748c4a092634216338e2
- Decoder (float): 53594392095aa5d3b5ad748c4a092634216338e2
- Renderer (float): 53594392095aa5d3b5ad748c4a092634216338e2
- Fixed point:
- Encoder (fixed): 816c984c58ad8e16a51c8e24b27510c360b8837f
- Decoder (fixed): 816c984c58ad8e16a51c8e24b27510c360b8837f
# Bug description
VAD seems too sensitive at 48 and 80 kbps SBA DTX.
short CNG burst in FX near 3.5 sec. In float it blends into the voice that comes after. In fixed a blip of noise can be heard
# Ways to reproduce
Box folder: ...\\Box_EXTERNAL_IVAS_BASOP_VERIFICATION\\issues\\issue-1461
<!--Commandline or script-->
```bash
IVAS_cod_fx -sba 1 -dtx -no_delay_cmp <BR> 48.0 in.wav bs.g192
IVAS_dec_fl -no_delay_cmp FOA 48.0 bs.g192 decoded.wav
IVAS_rend_fl -i decoded.wav -if FOA -o rendered.wav -of BINAURAL
```
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issue