ambdec binary package in Ubuntu Focal amd64

 AmbDec is an Ambisonics decoder for up to 36 speakers. It can be used
 for both horizontal and full 3-D systems of first, second and third
 order. The decoding matrices are fully user-configurable. AmbDec has
 some advanced features not found on most decoders:
  * Dual frequency band operation.
  * Speaker distance compensation.
  * Near-field effect compensation.
 .
 All three features can be selectively enabled or disabled in the
 configuration.

Source package