The ITU Radiocommunication Assembly considering a)that the improvements in picture quality associated with high-definition and future television systems that are in development (e.g. 3DTV, EHRI) may warrant continued study of the sound systems that should be used in order to keep in step with the higher level of realism available in the picture; b)that two-channel stereophonic representation conveys substantial acoustic information by phantom sources, and cannot adequately provide for coincidence of the visual and aural images independent of viewer’s location.
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