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Speech events may either cover a certain time span, a segment, or happen
at a certain point in time. Segmental events are for instance: phonetic
features (for instance voiced), phones,
syllables, morphs, words, dialog acts, dialogue turns, while events that
have only a single point in time might be: glottal pulses, bursts, energy peaks or valleys,
fundamental frequency peaks or lows, voice onsets, accents, syllable nuclei.
In most speech corpora you will encounter segmentations in turns, dialog
acts or words, on a much smaller scale also segmentations in phones and
prosodic categories. As a rule of thumb we can say that the effort for
segmentation and labeling increases dramatically and inversely proportional
to the size of the labeled units8.11
BITS Projekt-Account
2004-06-01