implement conversion to and from ACN-SN3D
- Related issues:
- Requested reviewers:
Reason why this change is needed
User may want to have input output ambisonis signals with different conventions
Description of the change
implement conversion to and from ACN-SN3D, see https://forge.3gpp.org/rep/ivas-codec-pc/ivas-codec/-/wikis/Ambisonics-conventions
Affected operating points
everything is BE
Edited by Dominik Weckbecker