Key Technology Advances for Video Quality

The delivery of video services is far more complex than that of pure voice or data. Dilithium engineers and technical experts have been involved in broad range of standard and technology development in the audio/video compression and multimedia communication areas since the early 1990s. Today’s Dilithium products and solutions are underpinned by many of these technologies, either in a unique offering or as part of the standards.

Different telecommunication networks today utilize different audio/voice codecs. The variation is due to the different conditions (bit-rates, delays, error recovery/concealments, etc…) that govern a particular network. Within an industry (e.g. mobile/cellular) different codecs may also be dominant or mandated, as is the case in GSM/WCDMA and CDMA/CDMA-2000 networks. Another example of variation is between broadband VoIP codecs (e.g. the ITU-T G.72X series) and the mobile-oriented voice codecs.

The variations of audio/voice codecs used across networks necessitate transcoding because of bit-rates restrictions and the complexity involved in terminals supporting codecs of other networks. For example WCMDA handsets do not/cannot support G.72X series of codecs.