olga pustovalova
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Olga Pustovalova, State University of Moldova
Scientific advisor: Gheorghe Căpăţână, Ph.D.
Voice output
1. Voice recordings2. Text-to-speech (TTS)
TTS:Software that can read electronic
texts automatically.Language-dependent.
Advantages
Auditory learning style
Fewer eyestrainSeveral tasks at a
time
Accessibility
Disadvantages
Quality issuesBandwidth issues
Non-auditory learning styles?
Search, scanning, scrolling?
Research topic
Voice output
Speech synthesis (TTS)
Speech synthesis based on a limited-domain dictionary
Use casesUse cases ArchitecturesArchitectures
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
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
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
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.
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.