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Embedding a Differentiable Mel-Cepstral Synthesis Filter to a Neural Speech Synthesis System End-to-End controllable speech synthesis를 위해 Mel-cepstral synthesis filter를 활용할 수 있음 Differentiable Mel-Cepstral Synthesis Filter Mel-cepstral synthesis filter를 통해 voice characteristics와 pitch는 각각 frequency warping parameter와 fundamental frequency를 통해 control 될 수 있음 이때 End-to-End 방식으로 최적화할 수 있도록 diffeten..