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While subjective assessments have been the gold standard for evaluating speech generation, there is a growing need for objective metrics that are highly correlated with human subjective judgments due to their cost efficiency. This paper…

Long Short-Term Memory (LSTM) is the primary recurrent neural networks architecture for acoustic modeling in automatic speech recognition systems. Residual learning is an efficient method to help neural networks converge easier and faster.…

Computation and Language · Computer Science 2017-08-21 Lu Huang , Jiasong Sun , Ji Xu , Yi Yang

The presence of a corresponding talking face has been shown to significantly improve speech intelligibility in noisy conditions and for hearing impaired population. In this paper, we present a system that can generate landmark points of a…

Computer Vision and Pattern Recognition · Computer Science 2018-04-24 Sefik Emre Eskimez , Ross K Maddox , Chenliang Xu , Zhiyao Duan

Most current speech enhancement models use spectrogram features that require an expensive transformation and result in phase information loss. Previous work has overcome these issues by using convolutional networks to learn long-range…

Audio and Speech Processing · Electrical Eng. & Systems 2019-04-17 Jalal Abdulbaqi , Yue Gu , Ivan Marsic

Although attention based end-to-end models have achieved promising performance in speech recognition, the multi-pass forward computation in beam-search increases inference time cost, which limits their practical applications. To address…

Audio and Speech Processing · Electrical Eng. & Systems 2020-08-07 Ye Bai , Jiangyan Yi , Jianhua Tao , Zhengkun Tian , Zhengqi Wen , Shuai Zhang

With the popularity of deep neural network, speech synthesis task has achieved significant improvements based on the end-to-end encoder-decoder framework in the recent days. More and more applications relying on speech synthesis technology…

Audio and Speech Processing · Electrical Eng. & Systems 2020-10-23 Dongyang Dai , Li Chen , Yuping Wang , Mu Wang , Rui Xia , Xuchen Song , Zhiyong Wu , Yuxuan Wang

Speech quality assessment is a critical process in selecting text-to-speech synthesis (TTS) or voice conversion models. Evaluation of voice synthesis can be done using objective metrics or subjective metrics. Although there are many…

Sound · Computer Science 2025-06-04 Saurabh Agrawal , Raj Gohil , Gopal Kumar Agrawal , Vikram C M , Kushal Verma

Speech recognition is very challenging in student learning environments that are characterized by significant cross-talk and background noise. To address this problem, we present a bilingual speech recognition system that uses an…

End-to-end speech large language models ((LLMs)) extend the capabilities of text-based models to directly process and generate audio tokens. However, this often leads to a decline in reasoning and generation performance compared to text…

Sound · Computer Science 2025-05-21 Yuanbo Fang , Haoze Sun , Jun Liu , Tao Zhang , Zenan Zhou , Weipeng Chen , Xiaofen Xing , Xiangmin Xu

This paper addresses the robust speech recognition problem as an adaptation task. Specifically, we investigate the cumulative application of adaptation methods. A bidirectional Long Short-Term Memory (BLSTM) based neural network, capable of…

Computation and Language · Computer Science 2019-06-17 Markus Kitza , Pavel Golik , Ralf Schlüter , Hermann Ney

Recurrent neural networks using the LSTM architecture can achieve significant single-channel noise reduction. It is not obvious, however, how to apply them to multi-channel inputs in a way that can generalize to new microphone…

Sound · Computer Science 2020-12-08 Felix Grezes , Zhaoheng Ni , Viet Anh Trinh , Michael Mandel

Evaluating speech generation still relies heavily on human judgments, such as Mean Opinion Score (MOS), which are expensive, subjective, and difficult to reproduce at scale. While a few recent studies have begun to explore AudioLLM-based…

Audio and Speech Processing · Electrical Eng. & Systems 2026-05-25 Yuanyuan Wang , Dongchao Yang , Yayue Deng , Zhiyong Wu , Yiwen Guo , Helen Meng , Xixin Wu

It is generally believed that direct sequence-to-sequence (seq2seq) speech recognition models are competitive with hybrid models only when a large amount of data, at least a thousand hours, is available for training. In this paper, we show…

Audio and Speech Processing · Electrical Eng. & Systems 2020-10-21 Zoltán Tüske , George Saon , Kartik Audhkhasi , Brian Kingsbury

Classic public switched telephone networks (PSTN) are often a black box for VoIP network providers, as they have no access to performance indicators, such as delay or packet loss. Only the degraded output speech signal can be used to…

Audio and Speech Processing · Electrical Eng. & Systems 2020-07-30 Gabriel Mittag , Ross Cutler , Yasaman Hosseinkashi , Michael Revow , Sriram Srinivasan , Naglakshmi Chande , Robert Aichner

This paper investigates the reference-less evaluation of machine translation for low-resource language pairs, known as quality estimation (QE). Segment-level QE is a challenging cross-lingual language understanding task that provides a…

Computation and Language · Computer Science 2025-01-09 Archchana Sindhujan , Diptesh Kanojia , Constantin Orasan , Shenbin Qian

Quality Estimation (QE) is the task of predicting the quality of Machine Translation (MT) system output, without using any gold-standard translation references. State-of-the-art QE models are supervised: they require human-labeled quality…

Computation and Language · Computer Science 2023-07-14 Tu Anh Dinh , Jan Niehues

In this paper, a neural network named Sequence-to-sequence ConvErsion NeTwork (SCENT) is presented for acoustic modeling in voice conversion. At training stage, a SCENT model is estimated by aligning the feature sequences of source and…

Sound · Computer Science 2020-01-14 Jing-Xuan Zhang , Zhen-Hua Ling , Li-Juan Liu , Yuan Jiang , Li-Rong Dai

The INTERSPEECH 2020 Deep Noise Suppression Challenge is intended to promote collaborative research in real-time single-channel Speech Enhancement aimed to maximize the subjective (perceptual) quality of the enhanced speech. A typical…

In this study, we present an approach to train a single speech enhancement network that can perform both personalized and non-personalized speech enhancement. This is achieved by incorporating a frame-wise conditioning input that specifies…

Audio and Speech Processing · Electrical Eng. & Systems 2023-02-24 Zhepei Wang , Ritwik Giri , Devansh Shah , Jean-Marc Valin , Michael M. Goodwin , Paris Smaragdis

State-of-the-art language models (LMs) represented by long-short term memory recurrent neural networks (LSTM-RNNs) and Transformers are becoming increasingly complex and expensive for practical applications. Low-bit neural network…

Computation and Language · Computer Science 2021-12-22 Junhao Xu , Jianwei Yu , Shoukang Hu , Xunying Liu , Helen Meng