What is Ultra Low Delay Audio Coder?

The Ultra Low Delay Audio Coder is a development of the Fraunhofer Institute for Digital Media Technology , which is headed by one of the fathers of MP3, Karlheinz Brandenburg, and of the Fraunhofer Institute for Integrated Circuits. The ULD is a lossy audio data compression scheme that only introduces a very small amount of delay into the audio signal compared to commonly known audio coders like MP3 or AAC. This property is especially useful for communication purposes , for which not only high compression ratios are necessary, but low latency is critical, too.