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An understanding of prosody is critical in basic research in speech and natural language processing, and in the technology for building high quality speech synthesis and spoken language understanding systems. Sufficient understanding and development of computational models require large amounts of prosodically transcribed speech. Unfortunately there is no single standard for prosodie transcription that is analogous to IPA for phonetic segments. To meet this need, a group of researchers with expertise in a variety of approaches to prosodie analysis and speech technology have developed TOBI; an agreed transcription system which builds on much recent progress in prosodie modelling. In a study with twenty transcribers with varied experience using this system and a total of 20,000 decisions, high inter-transcriber reliability was achieved. We report this and other evaluations of TOBI which document the …