olga pustovalova

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Olga Pustovalova, State University of Moldova [email protected] Scientific advisor: Gheorghe Căpăţână, Ph.D.

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Page 1: Olga Pustovalova

Olga Pustovalova, State University of Moldova

[email protected]

Scientific advisor: Gheorghe Căpăţână, Ph.D.

Page 2: Olga Pustovalova

Voice output

1. Voice recordings2. Text-to-speech (TTS)

TTS:Software that can read electronic

texts automatically.Language-dependent.

Page 3: Olga Pustovalova

Advantages

Auditory learning style

Fewer eyestrainSeveral tasks at a

time

Accessibility

Page 4: Olga Pustovalova

Disadvantages

Quality issuesBandwidth issues

Non-auditory learning styles?

Search, scanning, scrolling?

Page 5: Olga Pustovalova

Research topic

Voice output

Speech synthesis (TTS)

Speech synthesis based on a limited-domain dictionary

Use casesUse cases ArchitecturesArchitectures

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Usage of TTS

Unlimited dictionary: Lower quality.Texts of any type.

Limited dictionary:Higher quality.Texts of specific structure.

E.g. Julia Zhang (2004). Language Generation and Speech Synthesis in Dialogues for Language Learning

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Difficult and exhausting to listen.

Strange intonations, incorrect accents and pauses, unnatural way of reading.

Most advanced tools not available for free.

First impressions

Text-to-speech. Unlimited dictionary.Russian TTS: user experience studies. 2008

Page 8: Olga Pustovalova

Higher motivation to use TTS.

It took several days to get comfortable with synthesized voice.

Multi-tasking: listening while doing something else. Computer vs. creating audio-files for music players.

Long-term users

Text-to-speech. Unlimited dictionary.Russian TTS: user experience studies. 2008

Page 9: Olga Pustovalova

Subjective quality

Naturalness and intelligibility. Questionnaires. Modified mean opinion score (MOS).

Objective quality

Viswanathan (2005)Rix, Hollier (1993-2001)

Pitch, jitter, harmonic-to-noise ratio.

Page 10: Olga Pustovalova

TTS in daily life: studies of user

experience

•First impressions may discourage

users

•TTS → study on the go (mp3 players)

Preliminary results

Ways of integrating TTS:

preliminary drafts of architecture.