  Discrete speech tokens have been more and more popular in multiple speech
processing fields, including automatic speech recognition (ASR), text-to-speech
(TTS) and singing voice synthesis (SVS). In this paper, we describe the systems
developed by the SJTU X-LANCE group for the TTS (acoustic + vocoder), SVS, and
ASR tracks in the Interspeech 2024 Speech Processing Using Discrete Speech Unit
Challenge. Notably, we achieved 1st rank on the leaderboard in the TTS track
both with the whole training set and only 1h training data, with the highest
UTMOS score and lowest bitrate among all submissions.
