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Wubo Li

3 accepted papers

2021

A Further Study of Unsupervised Pretraining for Transformer Based Speech Recognition

ICASSP 2021accepted

The construction of an effective good speech recognition system typically requires large amounts of transcribed data, which is expensive to collect. To overcome this problem, many unsupervised pretraining methods have been proposed. Among these methods, Masked Predictive Coding achieved significant…

Cited by 0SourceScholar
2021

Didispeech: A Large Scale Mandarin Speech Corpus

ICASSP 2021accepted

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 p…

Cited by 0SourceScholar
2021

Transformer Based Unsupervised Pre-Training for Acoustic Representation Learning

ICASSP 2021accepted

Recently, a variety of acoustic tasks and related applications arised. For many acoustic tasks, the labeled data size may be limited. To handle this problem, we propose an unsupervised pre-training method using Transformer based encoder to learn a general and robust high-level representation for all…

Cited by 0SourceScholar