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Mixed-emotion Text-to-Speech on CREMA-D (in-distribution)

0.795Embedding Similarity (E-SIM)CoCoEmo
0.740920.754960.7690.78304Feb 3, 2026

Evaluation results

MethodLinks
CoCoEmoBackbone=CosyVoice2, conditioning=Instruction2, alpha=52026.020.79531.50.2970.7550.8450.913.66
CoCoEmoBackbone=CosyVoice2, conditioning=Instruction1, alpha=52026.020.7933.50.3190.760.8460.23
CoCoEmoBackbone=IndexTTS2, alpha=52026.020.782140.240.7340.8635.814.13
CoCoEmoBackbone=CosyVoice2, conditioning=Instruction1, alpha=32026.020.7829.10.2250.7280.8490.273.38
CoCoEmoBackbone=CosyVoice2, alpha=52026.020.77914.90.2090.7240.870.783.96
CoCoEmoBackbone=CosyVoice2, conditioning=Instruction2, alpha=32026.020.77726.60.2070.7260.8520.533.42
CoCoEmoBackbone=IndexTTS2, conditioning=Emo-Vector, alpha=52026.020.77427.80.3990.7890.8365.894.16
CoCoEmoBackbone=IndexTTS2, conditioning=Emo-Vector, alpha=32026.020.7724.70.3240.760.8455.854.66
Emo-VectorBackbone=IndexTTS22026.020.76716.50.2360.7310.855.744.05
CoCoEmoBackbone=IndexTTS2, alpha=32026.020.76790.0720.6810.8645.833.95
Instruction2Backbone=CosyVoice22026.020.76216.90.1040.6880.8510.063.36
CoCoEmoBackbone=CosyVoice2, alpha=32026.020.762100.1660.7090.8721.014.25
Instruction1Backbone=CosyVoice22026.020.761200.1110.6940.8530.224.11
No-steerBackbone=IndexTTS22026.020.7513.7——0.8645.723.82
No-steerBackbone=CosyVoice22026.020.7436.5——0.8711.074.11