RTAudio
RTAudio is a Microsoft produced adaptive wide-band speech codec. It is used by Microsoft Office Communications Server and the related OCS clients.
RTAudio was designed for real-time two-way Voice over IP applications. Some of the target applications include games, audio conferencing, and wireless applications over IP. RTAudio is the preferred Microsoft Real-Time audio codec, and is the default voice codec for Microsoft’s Unified Communications platforms.
The RTAudio encoder is capable of encoding single-channel, 16 bit per sample audio signals. The encoder can be configured to operate either in the Narrow Band mode or the Wide Band mode. The RTAudio decoder has a built-in jitter control module as well as an error concealment module.Licensing
RTAudio is a proprietary codec. Like RTVideo, this protocol can also be licensed from Microsoft.
