May 31, 2011

New audio coding system to improve videoconferencing

A new codec (data coding system) called Enhanced Low Delay Advanced Audio Coding (AAC-ELD) developed by researchers at the Fraunhofer Institute for Integrated Circuits IIS has solved a major problem with Skype and other videoconference calls: latency (annoying sound delay between participants).

Their new Enhanced Low Delay Advanced Audio Coding (AAC-ELD) allows for latency only about 15 milliseconds. In the process, they also managed to reduce the audio data to less than one-thirtieth of its original size without major loss of sound quality, thus reducing the required bandwidth.

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