Ruchao Fan

Frequency warping based on two factor weighted fusion

2017

Traditional frequency warping algorithms in speech recognition mainly consider the spectrum offset caused by different vocal tract length. But in addition to the vocal tract length, the pronunciation diversity is also affected by the glottis …

LPC Augment: an LPC-based ASR Data Augmentation Algorithm for Low and Zero-Resource Children’s Dialects

2022 · ICASSP 2022 - 2022 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)

This paper proposes a novel linear prediction coding-based data augmentation method for children’s low and zero resource dialect ASR. The data augmentation procedure consists of perturbing the formant peaks of the LPC spectrum during LPC …

CTCBERT: Advancing Hidden-unit BERT with CTC Objectives

2022 · arXiv (Cornell University)

In this work, we present a simple but effective method, CTCBERT, for advancing hidden-unit BERT (HuBERT). HuBERT applies a frame-level cross-entropy (CE) loss, which is similar to most acoustic model training. However, CTCBERT performs the …