Communication and Knowledge – Audiovisual signal processing

Modern data channels allow us to easily send HD video, music and photos several megapixels in size– it takes no more than a few minutes for all kinds of files to make it onto the web or our hard drives. Fraunhofer researchers are working on modern processing and compression methods to achieve even greater quality while reducing file size even further.

Kommunikation und Wissen

Projects

Telephone calls clear as a bell

The EVS codec transmits speech of such pure quality that it sounds as if the person you’re calling is in the same room.

The EVS codec transmits speech of such pure quality that it sounds as if the person you’re calling is in the same room.
© Photo Fraunhofer IIS

The EVS codec transmits speech of such pure quality that it sounds as if the person you’re calling is in the same room.

Smartphones can do almost everything you want, but their poor voice quality is still a vexing issue. Fraunhofer researchers have helped develop a new codec to banish this problem. Their solution raises voice quality to an unprecedented level – making it sound as natural as if the person you’re calling is standing right next to you. That’s because, for the first time, the entire audible frequency spectrum is transmitted.

MP3 audio format

Marc Gayer, Manfred Lutzky und Markus Schnell (v.l.n.r.)
© Photo Dirk Mahler/Fraunhofer

MP3 (MPEG Layer 3) is an audio format that encodes and stores music without audible loss. Since the process also saves space, it allows files to be transferred quickly. MP3 has grown beyond the German market to become a world standard, serving as a calling card for German innovation and having gained a broad cultural and financial significance. In July 2008, the Fraunhofer-Gesellschaft and Friedrich-Alexander-Universität Erlangen-Nürnberg together founded the International Audio Laboratories Erlangen research center. Funded by income generated from MP3 patents, the center carries out further research into audio and multimedia technologies.

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H.265 high efficiency video coding (HEVC)

High Efficiency Video Coding (HEVC oder H.265 oder MPEG-H) ist eine gemeinsame Entwicklung der ISO/IEC Moving Picture Experts Group (MPEG) und der ITU-T Video Coding Experts Group (VCEG). Es soll im Vergleich zur Standardkompressionsmethode H.264 eine doppelt so starke Kompression bei subjektiv gleichbleibender Videoqualität erzielen. Die Technologie wird demnächst von der ISO/IEC bestätigt.

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Fraunhofer Information and Communication Technology Group

The Fraunhofer Information and Communication Technology Group serves as a one-stop shop for industrial customers and media enterprises.