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End-to-end (E2E) automatic speech recognition (ASR) systems directly map acoustics to words using a unified model. Previous works mostly focus on E2E training a single model which integrates acoustic and language model into a whole.…

Computation and Language · Computer Science 2018-03-06 Zhehuai Chen , Qi Liu , Hao Li , Kai Yu

End-to-end speaker verification systems have received increasing interests. The traditional i-vector approach trains a generative model (basically a factor-analysis model) to extract i-vectors as speaker embeddings. In contrast, the…

Audio and Speech Processing · Electrical Eng. & Systems 2018-12-13 Yutian Li , Feng Gao , Zhijian Ou , Jiasong Sun

In Uyghur speech, consonant and vowel reduction are often encountered, especially in spontaneous speech with high speech rate, which will cause a degradation of speech recognition performance. To solve this problem, we propose an effective…

Sound · Computer Science 2022-04-05 Guodong Ma , Pengfei Hu , Jian Kang , Shen Huang , Hao Huang

End-to-end (E2E) systems have played a more and more important role in automatic speech recognition (ASR) and achieved great performance. However, E2E systems recognize output word sequences directly with the input acoustic feature, which…

Audio and Speech Processing · Electrical Eng. & Systems 2020-08-04 Qi Liu , Zhehuai Chen , Hao Li , Mingkun Huang , Yizhou Lu , Kai Yu

Despite the significant improvements in speaker recognition enabled by deep neural networks, unsatisfactory performance persists under noisy environments. In this paper, we train the speaker embedding network to learn the "clean" embedding…

Audio and Speech Processing · Electrical Eng. & Systems 2020-02-14 Danwei Cai , Weicheng Cai , Ming Li

In voice-enabled applications, a predetermined hotword isusually used to activate a device in order to attend to the query.However, speaking queries followed by a hotword each timeintroduces a cognitive burden in continued conversations.…

Computation and Language · Computer Science 2022-08-30 Shuo-yiin Chang , Guru Prakash , Zelin Wu , Qiao Liang , Tara N. Sainath , Bo Li , Adam Stambler , Shyam Upadhyay , Manaal Faruqui , Trevor Strohman

The development of privacy-preserving automatic speaker verification systems has been the focus of a number of studies with the intent of allowing users to authenticate themselves without risking the privacy of their voice. However, current…

Audio and Speech Processing · Electrical Eng. & Systems 2022-10-28 Francisco Teixeira , Alberto Abad , Bhiksha Raj , Isabel Trancoso

This paper presents an experimental study on deep speaker embedding with an attention mechanism that has been found to be a powerful representation learning technique in speaker recognition. In this framework, an attention model works as a…

Sound · Computer Science 2018-09-26 Qiongqiong Wang , Koji Okabe , Kong Aik Lee , Hitoshi Yamamoto , Takafumi Koshinaka

Recent speaker verification (SV) systems have shown a trend toward adopting deeper speaker embedding extractors. Although deeper and larger neural networks can significantly improve performance, their substantial memory requirements hinder…

Audio and Speech Processing · Electrical Eng. & Systems 2024-12-03 Bei Liu , Yanmin Qian

We present an end-to-end deep network model that performs meeting diarization from single-channel audio recordings. End-to-end diarization models have the advantage of handling speaker overlap and enabling straightforward handling of…

Sound · Computer Science 2021-05-06 Soumi Maiti , Hakan Erdogan , Kevin Wilson , Scott Wisdom , Shinji Watanabe , John R. Hershey

We study the problem of word-level confidence estimation in subword-based end-to-end (E2E) models for automatic speech recognition (ASR). Although prior works have proposed training auxiliary confidence models for ASR systems, they do not…

Audio and Speech Processing · Electrical Eng. & Systems 2021-03-12 David Qiu , Qiujia Li , Yanzhang He , Yu Zhang , Bo Li , Liangliang Cao , Rohit Prabhavalkar , Deepti Bhatia , Wei Li , Ke Hu , Tara N. Sainath , Ian McGraw

In this paper, gating mechanisms are applied in deep neural network (DNN) training for x-vector-based text-independent speaker verification. First, a gated convolution neural network (GCNN) is employed for modeling the frame-level embedding…

Audio and Speech Processing · Electrical Eng. & Systems 2019-04-05 Lanhua You , Wu Guo , Lirong Dai , Jun Du

End-to-end models are fast replacing the conventional hybrid models in automatic speech recognition. Transformer, a sequence-to-sequence model, based on self-attention popularly used in machine translation tasks, has given promising results…

Audio and Speech Processing · Electrical Eng. & Systems 2021-11-19 Vishwas M. Shetty , Metilda Sagaya Mary N J , S. Umesh

This paper introduces a semi-supervised contrastive learning framework and its application to text-independent speaker verification. The proposed framework employs generalized contrastive loss (GCL). GCL unifies losses from two different…

Audio and Speech Processing · Electrical Eng. & Systems 2020-06-09 Nakamasa Inoue , Keita Goto

The Chinese numerical string corpus, serves as a valuable resource for speaker verification, particularly in financial transactions. Researches indicate that in short speech scenarios, text-dependent speaker verification (TD-SV)…

Sound · Computer Science 2024-05-22 Litong Zheng , Feng Hong , Weijie Xu , Wan Zheng

The x-vector maps segments of arbitrary duration to vectors of fixed dimension using deep neural network. Combined with the probabilistic linear discriminant analysis (PLDA) backend, the x-vector/PLDA has become the dominant framework in…

Audio and Speech Processing · Electrical Eng. & Systems 2020-01-15 Bin Gu , Wu Guo

In this paper, we propose self-supervised speaker representation learning strategies, which comprise of a bootstrap equilibrium speaker representation learning in the front-end and an uncertainty-aware probabilistic speaker embedding…

Audio and Speech Processing · Electrical Eng. & Systems 2021-12-28 Sung Hwan Mun , Min Hyun Han , Dongjune Lee , Jihwan Kim , Nam Soo Kim

In this paper, we propose a deep convolutional neural network-based acoustic word embedding system on code-switching query by example spoken term detection. Different from previous configurations, we combine audio data in two languages for…

Audio and Speech Processing · Electrical Eng. & Systems 2020-05-26 Murong Ma , Haiwei Wu , Xuyang Wang , Lin Yang , Junjie Wang , Ming Li

The paper presents a novel approach to refining similarity scores between input utterances for robust speaker verification. Given the embeddings from a pair of input utterances, a graph model is designed to incorporate additional…

Audio and Speech Processing · Electrical Eng. & Systems 2021-09-21 Jingyu Li , Si-Ioi Ng , Tan Lee

Recently, the speech community is seeing a significant trend of moving from deep neural network based hybrid modeling to end-to-end (E2E) modeling for automatic speech recognition (ASR). While E2E models achieve the state-of-the-art results…

Audio and Speech Processing · Electrical Eng. & Systems 2022-02-04 Jinyu Li