Fast, High-Quality and Parameter-Efficient Articulatory Synthesis using Differentiable DSP
<|reference_start|>Fast, High-Quality and Parameter-Efficient Articulatory Synthesis using Differentiable DSP: Articulatory trajectories like electromagnetic articulography (EMA) provide a low-dimensional representation of the vocal tract filter and have been used as natural, grounded features for speech synthesis. Differentiable digital signal processing (DDSP) is a parameter-efficient framework for audio synthesis. Therefore, integrating low-dimensional EMA features with DDSP can significantly enhance the computational efficiency of speech synthesis. In this paper, we propose a fast, high-quality, and parameter-efficient DDSP articulatory vocoder that can synthesize speech from EMA, F0, and loudness. We incorporate several techniques to solve the harmonics / noise imbalance problem, and add a multi-resolution adversarial loss for better synthesis quality. Our model achieves a transcription word error rate (WER) of 6.67% and a mean opinion score (MOS) of 3.74, with an improvement of 1.63% and 0.16 compared to the state-of-the-art (SOTA) baseline. Our DDSP vocoder is 4.9x faster than the baseline on CPU during inference, and can generate speech of comparable quality with only 0.4M parameters, in contrast to the 9M parameters required by the SOTA.<|reference_end|>
@article{liu2024fast,,
    title={Fast, High-Quality and Parameter-Efficient Articulatory Synthesis using
  Differentiable DSP},
    author={Yisi Liu, Bohan Yu, Drake Lin, Peter Wu, Cheol Jun Cho, Gopala Krishna
  Anumanchipalli},
    journal={arXiv preprint arXiv:2409.02451},
    year={2024},
    archivePrefix={arXiv},
    eprint={2409.02451},
    primaryClass={eess.AS cs.AI cs.SD}
}