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Speech Processing

Speech Processing. August 4, 2005. CS 224S / LINGUIST 236 Speech Recognition and Synthesis. Dan Jurafsky. Lecture 1: Overview and Articulatory Phonetics. Applications of Speech Recognition/Understanding (ASR/ASU). Dictation

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Speech Processing

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  1. Speech Processing August 4, 2005

  2. CS 224S / LINGUIST 236Speech Recognition and Synthesis Dan Jurafsky Lecture 1: Overview and Articulatory Phonetics

  3. Applications of Speech Recognition/Understanding (ASR/ASU) • Dictation • Telephone-based Information (directions, air travel, banking, etc) • Hands-free (in car) • Second language ('L2') (accent reduction) • Audio archive searching

  4. Applications of Speech Synthesis/Text-to-Speech (TTS) • Games • Telephone-based Information (directions, air travel, banking, etc) • Eyes-free (in car) • Reading/speaking for disabled • Education (Reading tutors, L2)

  5. Applications of Speaker/ Language Recognition • Language recognition for call routing • Speaker Recognition: • Speaker verification (binary decision) • Voice password, telephone assistant • Speaker identification (one of N) • Criminal investigation

  6. State of the Art • ASR • speaker-independent, continuous, no noise, world’s best research systems: • Human-human speech: ~13-20% Word Error Rate (WER) • Human-machine speech: ~3-5% WER

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