Experience unprecedented quality for speech, music and mixed content with Fraunhofer IIS' communication solutions. Explore the future of phone calls, teleconferences and voice-controlled human-machine interaction.



EVS is especially designed for VoLTE (Voice over LTE) services. It enables phone calls with Full-HD Voice quality, bringing call fidelity up to the same level as today’s other digital media services. Integrating state-of-the-art speech and audio coding technology, EVS removes the limitations of bandlimited and voice-centric codecs that were previously used in mobile communications.


upHear Voice Quality Enhancement

The Fraunhofer upHear Voice Quality Enhancement (VQE) software is designed to facilitate voice-controlled human-machine interactions using microphones built into mobile phones and smart home devices such as smart speakers.


LC3 / LC3plus

The new LC3 / LC3plus audio codec was developed in order to solve essential shortcomings present in today’s wireless communication platforms such as Bluetooth and Digital Enhanced Cordless Telecommunications (DECT). The codec’s operation modes range from medium bit rates for optimal voice transmission up to high bit rates for high-resolution music streaming services.  

Spatial Audio Conferencing

The technology renders participants of a teleconference into a 3D soundstage and allows listening over stereo headsets.

AAC-ELD Family

Already being widely used for professional and consumer communication applications, are state-of-the-art MPEG-4 audio codecs for maximum speech and audio quality at very low coding delay.