Challenge: Recent advances in deep generative models have succeeded in synthesizing human-like speech.
Approach: They propose a text-to-speech model with a prosody diversifying module that considers perceptual diversity in each sample and among multiple samples.
Outcome: The proposed model generates speech samples with more diversified prosody than baselines in the side-by-side comparison test considering the naturalness of speech at the same time.

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Challenge: Text-to-speech (TTS) models have been developed to generate high-quality speech.
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Challenge: Expressive text-to-speech aims to generate high-quality samples with rich prosody . prosodic attributes in highly dynamic voices are difficult to capture and model without intonation .
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Challenge: Existing models for text-to-speech (TTS) synthesize speech with acoustic features . autoregressive models have problems with word skipping and repeated reading . non-autoregressive acustic models lack probabilistic modeling and unimodal characteristics of Gaussian distribution don't conform to true distribution of aural features, which restricts the diversity of generated prosodic features.
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Challenge: Recent advances in text-to-speech (TTS) models have led to improvements in speaker prosody and voices modeling.
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Challenge: a method to control affective prosody of text-to-speech systems is proposed to use phoneme-level intermediate features as levers . DS is used to disentangle features relating to affective proody from those due to acoustics conditions and speaker identity .
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Challenge: Text-to-speech systems that scale up the amount of training data have certain limitations: they require a large amount of data, which increases costs, and overlook prosody similarity.
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