scope:

The present document specifies the subjective and objective methodologies developed in cooperation between TC STQ and TC DECT for the characterization of the Low Complexity Communication Codec Plus (LC3plus). It describes experimental tests and conditions used for subjective and objective testing. Based on these methodologies the performance requirements for this codec are specified.

The requirements in the present document are specified to characterize a high-quality codec for use in modern telecommunication networks, including but not limited to DECT and VoIP. A special focus is placed on the fact that end-to-end connections are often of hybrid nature concatenating different technologies and thus tandeming (i.e. transcoding) different codecs.