  This paper introduces a new open-sourced Mandarin speech corpus, called
DiDiSpeech. It consists of about 800 hours of speech data at 48kHz sampling
rate from 6000 speakers and the corresponding texts. All speech data in the
corpus is recorded in quiet environment and is suitable for various speech
processing tasks, such as voice conversion, multi-speaker text-to-speech and
automatic speech recognition. We conduct experiments with multiple speech tasks
and evaluate the performance, showing that it is promising to use the corpus
for both academic research and practical application. The corpus is available
at https://outreach.didichuxing.com/research/opendata/.
