Universal Low-Resource Speech Synthesis Via Phoneme Fusion Coordinating Low-Rank Decomposition

Recent advancements in end-to-end text-to-speech models have made significant progress. However, these approaches based on high-resource languages, are inapplicable for low-resource languages, and existing low-resource speech synthesis methods are typically specific to single languages. Consequently, the pursuit of a universal methodology for low-resource speech synthesis emerges as a critical problem that requires immediate attention. Unlike previous works, we propose a novel and universal approach for multiple low-resource languages by leveraging phoneme fusion coordinating low-rank decomposition in a pre-trained multilingual model. Specifically, by establishing a multilingual phoneme dictionary through phoneme fusion and applying parameter freezing and matrix decomposition techniques for fine-tuning, the proposed method was extensively evaluated across four different languages, each utilizing approximately 3 hours of speech data. The experimental results demonstrate that the quality of the synthesized speech surpasses current mainstream methods for low-resource speech synthesis, achieving outcomes comparable to those trained with tens of hours of data. Audio samples are available at https://priankaan.github.io/Demo.github.io.