This workshop will present the status of existing and future developments of wideband, superwideband and fullband codecs as well as relevant applications from speech to mixed content and from advertisement to music on hold and even to film trailers. Moreover the potential advantages from the use of spatialisation, multichannel transmission and 3D sounds will also be explored. This event will be hosted by France Telecom.
For several decades, spanning the evolution from circuit switched telephony to IP telephony, digital voice communications have relied on narrow band (300-3400 Hz) speech. In that time tele or videoconferencing applications with a need for more elaborate sound content have become more popular. The extra content necessitates a wider audio band, e.g. covering musical instruments, sound effects etc, than that necessary for speech.
Many codecs are defined for wideband (50Hz-7000Hz) and the first steps have been taken towards the standardization of conversational superwideband (50Hz-14000Hz) and even fullband (20Hz-22000Hz) codecs.
These new codecs support not only speech but also mixed content or music. Mixed content can mean advertising, ring tones, music on hold and even movie trailers.
In the case of teleconferencing advantage could be taken from the use of spatialisation, multichannel transmission and 3D sounds.
The goals of the workshop are :
to provide inputs to develop new methodologies covering the complete audio bandwidth from Narrow Band to Fullband and continuing to ensure compatibility with existing ITU-T Recommendations.
to review terminal characteristics to cope with new bandwidth requirements and multichannel aspects in function of the evolution of the codecs, transmission techniques and core/access networks (all IP, NGN, mobile).
The workshop aims to establish a constructive dialogue between universities, standardization bodies and companies to combine efforts and skills to create standards bringing interested parties together from around the world to promote innovation.
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