Technology and innovation
In order to realise Televic's mission to develop and manufacture
a range of high quality, superior products and solutions for audio,
multimedia and communication markets, the R&D department of
Televic has a clear focus on innovative technologies; more
specifically core technologies such as digital audio, digital video
and networks. In each of these domains, the R&D team has
outstanding expertise and is continuously improving that knowledge
based on research project in collaboration with research
institutes, universities and engineering schools.
In the area of digital audio, the Televic R&D team not only has the skills needed to realise complex digital audio systems that are capable of transporting and mixing high quality audio information at extremely low latencies, but the team is also actively researching improvement routes for these systems.
Part of the research is oriented to improve the speech intelligibility and uses well known techniques such as de-popping of time/frequency variant amplification, as well as more advanced formant modification techniques which mimic human behavior to improve the articulation of speech.
Besides intelligibility, the research activities are also looking at feedback phenomena (the Larsen-effect) and devise new techniques to solve the limitations of existing methods.
As more and more applications are integrating video, it is important as an innovative company to understand the technology involved completely and to be able to apply the knowledge successfully in te market. To this extend Televic has developed a special MPEG4 compliant codec designed to operate in very tight low-latency conditions while relying on general purpose processors such as a Pentium-III. This technology has been applied in the multimedia language lab solution and is capable of encoding live CIF images while guaranteeing an end-to-end latency of less than 100ms, using a standard IP-network.
Extensive knowledge of digital networks is very important when dealing with digital audio and video. In the past, all digital transport networks were based on proprietary protocols but, as is the case for most networks, the future lays in IP-based networks. Although IP-networks are well known in office environments for internet use, it is far from obvious to apply them in the real-time low-latency applications typical for Televic's niche markets.
For Televic's applications specific quality of service (QoS) requirements have to be taken into account. To provide such solutions, Televic uses special equipment or develops own solutions within the limits of IP-standards if no standard devices are available on the market.
Besides the development of network devices, Televic R&D has also the research skills and tools (such as the Click modular router) to simulate or emulate different network conditions, thus enabling realistic testing inside the Televic R&D lab of different network characteristics such as bandwidth limitations, jitter, latency, etc.