Tts evaluation
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TTS Evaluation. Julia Hirschberg CS 4706. TTS Evaluation. Intelligibility Tests Mean Opinion Scores Preference Tests. 7/15/2014. Speech and Language Processing Jurafsky and Martin. 2. Intelligibility Tests. Diagnostic Rhyme Test (DRT) Listening test

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TTS Evaluation

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Tts evaluation

TTS Evaluation

Julia Hirschberg

CS 4706


Tts evaluation1

TTS Evaluation

Intelligibility Tests

Mean Opinion Scores

Preference Tests

7/15/2014

Speech and Language Processing Jurafsky and Martin

2


Intelligibility tests

Intelligibility Tests

  • Diagnostic Rhyme Test (DRT)

    • Listening test

    • Listeners choose between two words differing by a single phonetic feature (voicing, nasality, sustenation, sibilation)

    • DRT: 96 rhyming pairs

      • Dense/tense, bond/pond, …

        • Subject hears dense, chooses either dense or tense

        • % of correct answers is intelligibility score

    • Problem: Only tests single word synthesis


Tts evaluation

  • Modified DRT:

    • 300 words, 50 sets of 6 words (went, sent, bent, tent, dent, rent)

    • Embedded in carrier phrases:

      • Now we will say dense again

  • Mean Opinion Score

    • Have listeners rate output on a scale from 1 (bad) to 5 (excellent)

  • Preference tests:

    • Reading addresses out loud, reading news text, using two different systems or systems against human voice

    • Do a preference test (prefer A, prefer B)


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