RCS (Rich Communication Services) is designed to modernize SMS/txt messaging by adding features like group chats, file sharing, and chatbots.
Fraunhofer IIS is excited to share that xHE-AAC, the latest generation of the AAC audio codec family, is now part of the GSMA’s RCS Universal Profile 3.1. For mobile network operators, this marks a major step forward in delivering high-quality audio messaging to users—right within their native messaging apps.
RCS (Rich Communication Services) is designed to modernize SMS by adding features like group chats, file sharing, and chatbots. With the latest update, it now supports audio messages encoded with xHE-AAC. That means clearer voice notes, better intelligibility, stereo audio, and a more consistent listening experience—even in challenging network conditions.
What makes xHE-AAC stand out?
The technology is built for efficiency and quality. The codec supports adaptive streaming from 12 to over 320 kbit/s, includes mandatory loudness and dynamic range control, and improves both speech clarity and stereo imaging. These features help operators offer a richer messaging experience without compromises.
Already used by streaming services including Audible, Netflix, Facebook, and Instagram, xHE-AAC is natively supported across Android and iOS. Its integration into RCS 3.1 paves the way for faster deployment, easier device compatibility, and a stronger value proposition for operators looking to compete with OTT messaging apps.
With xHE-AAC, RCS becomes more than just a messaging upgrade—it’s a smarter way to connect.
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