Why Study Spoken Language? Julia Hirschberg CS 4706

Why Study Spoken Language? Julia Hirschberg CS 4706

Why Study Spoken Language? Julia Hirschberg CS 4706 02/12/20 1 To find out why they speak the way they do When do people speak faster or slower (speaking rate) Why do peoples voices have different qualities on different occasions? (voice quality) When are people likely to be disfluent?

When do people speak up ? When do they emphasize certain words? When do people speak louder or softer? When do people take a break in their speech? When do they use different intonational contours? 02/12/20 2 Variation like this can signal Topic Structure Information Status: whats shared knowledge? Whats important?

Speaker State Emotion Deception Speech Acts Syntactic Structure 02/12/20 3 Semantic meaning Speech planning

02/12/20 4 To build computational systems to perform useful tasks Speech recognition and synthesis (TTS) Spoken Dialogue systems: Over-the-phone services Tutoring systems Speech to Speech Translation Speech Data Mining Homeland Security: Deception and Speaker ID

To build language systems 02/12/20 5 What will we study in this course? Speech phenomena Acoustics, intonation, disfluencies, laughter Tools for speech annotation and analysis Speech technologies Text-to-Speech Automatic Speech Recognition

Speaker Identification Spoken Dialogue Systems 02/12/20 6 Challenges for speech technologies Pronunciation modeling Modeling accent, phrasing and contour Spoken cues to

Discourse segmentation Information status Topic detection Speech acts Turn-taking Speaker State: emotional speech, charismatic speech, deceptive speech. 02/12/20

7 Course information Course syllabus and readings (Jurafsky & Martin, second edition, chapters available from the Village Copier, 119th & Amsterdam) Speech tools and speech lab Courseworks: discussion, homework assignments, course files TA: Fadi Biadsy 02/12/20

8 Homework and Exams Lab/homework exercises Learn how to do simple speech analysis with a standard software package (Praat) that you can download on your pc or mac Learn how to analyze intonational variation Build and evaluate a TTS system an ASR system Take-home midterm and final

02/12/20 9 Honor policy on syllabus Late policy on syllabus (5 free late days for the semester) 02/12/20 10

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