Sandhi on the boundary of a monosyllabic preposition with a vowel obstruent and a word with a glottal sonant (on the material of the Czech spoken language corpus Ortofon v2).
The object of the investigation is sandhi in the modern Czech language based on phonetic research of Czech corpus of spoken language – ORTOFON v2. In the Czech Standard norm word-final obstruents undergo devoicing before initial sonant of the following word. However, we have a different situation in case of word final voiced obstruents in prepositions before initial sonant in Czech language. The realization of word final obstruents in prepositions is always voiced before initial sonant. The frequency of devoiced realizations of word-final obstruents before initial sonant in analysed material was very low. The research showed that the devoicing of word final obstruents in prepositions before initial sonant is primarily noted in slower-paced speech when the preposition is less closely related to the adjacent word.