[non-BE] Resolve "Wrong and unstable spatial image at the beginning of active speech for ISM1 with DTX"
- Related issues: #1500 (closed)
- Requested reviewers:
Reason why this change is needed
- There is a wrong and unstable spatial image at the beginning of active speech for ISM1 with DTX.
Description of the change
- Correction of the elevation smoothing when the metadata are significantly changing just before the start of an active segment.
Affected operating points
- Not-BE for ISM in DTX when elevation metadata are significantly changing.
Related to #1500 (closed)