Cross-Speaker Emotion Transfer for Low-Resource Text-to-Speech Using Non-Parallel Voice Conversion with Pitch-Shift Data Augmentation
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Abstract (arXiv)
Data augmentation via voice conversion (VC) has been successfully applied to low-resource expressive text-to-speech (TTS) when only neutral data for the target speaker are available. Although the quality of VC is crucial for this approach, it is challenging to learn a stable VC model because the amount of data is limited in low-resource scenarios, and highly expressive speech has large acoustic variety. To address this issue, we propose a novel data augmentation method that combines pitch-shifting and VC techniques. Because pitch-shift data augmentation enables the coverage of a variety of pitch dynamics, it greatly stabilizes training for both VC and TTS models, even when only 1,000 utterances of the target speaker's neutral data are available. Subjective test results showed that a FastSpeech 2-based emotional TTS system with the proposed method improved naturalness and emotional similarity compared with conventional methods.
Key facts. Cited by 8 papers in the map (data through 14 Oct 2026). Builds on 24 of its 43 references that are in the map. First posted on arXiv 21 Apr 2022.
Builds on
24 of 43 references.
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12 more
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Citing papers per year: 2023: 4; 2024: 2; 2025: 1; 2026: 1.
8 papers.
- 2023ZET-Speech: Zero-shot adaptive Emotion-controllable Text-to-Speech Synthesis with Diffusion and Style-based Modelscited by 14
- 2023Nonparallel Emotional Voice Conversion For Unseen Speaker-Emotion Pairs Using Dual Domain Adversarial Network & Virtual Domain Pairingcited by 9
- 2024Rasa: Building Expressive Speech Synthesis Systems for Indian Languages in Low-resource Settingscited by 7
- 2023CALLS: Japanese Empathetic Dialogue Speech Corpus of Complaint Handling and Attentive Listening in Customer Centercited by 3
- 2025Voice Conversion for Lombard Speaking Style with Implicit and Explicit Acoustic Feature Conditioningcited by 2
- 2023Unsupervised Pre-Training For Data-Efficient Text-to-Speech On Low Resource Languagescited by 1
- 2024Discrete Unit based Masking for Improving Disentanglement in Voice Conversioncited by 1
- 2026Semantics-Aware Generative Latent Data Augmentation for Learning in Low-Resource Domainscited by 0
- 2026Semantics-Aware Generative Latent Data Augmentation for Learning in Low-Resource Domains2 Feb 2026
- 2025Voice Conversion for Lombard Speaking Style with Implicit and Explicit Acoustic Feature Conditioning12 Jul 2025
- 2024Discrete Unit based Masking for Improving Disentanglement in Voice Conversion17 Sep 2024
- 2024Rasa: Building Expressive Speech Synthesis Systems for Indian Languages in Low-resource Settings19 Jul 2024
- 2023ZET-Speech: Zero-shot adaptive Emotion-controllable Text-to-Speech Synthesis with Diffusion and Style-based Models23 May 2023
- 2023CALLS: Japanese Empathetic Dialogue Speech Corpus of Complaint Handling and Attentive Listening in Customer Center23 May 2023
- 2023Unsupervised Pre-Training For Data-Efficient Text-to-Speech On Low Resource Languages28 Mar 2023
- 2023Nonparallel Emotional Voice Conversion For Unseen Speaker-Emotion Pairs Using Dual Domain Adversarial Network & Virtual Domain Pairing21 Feb 2023