permitted (without necessarily marking boundaries) in English. Even the relationship between stress and vowel length, which may seem intuitive to speakers of English, may not exist in other languages, so second-language learners face an especially great challenge when learning a language and its segmentation cues. See also Ambiguity Speech recognition Speech processing Hyphenation Mondegreen Speech perception Sentence boundary disambiguation References External links "Phonolyze" speech segmentation software SPPAS - the automatic annotation and analysis of speech Natural language processing