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In acoustic signal processing, the target signals usually carry semantic information, which is encoded in a hierarchal structure of short and long-term contexts. However, the background noise distorts these structures in a nonuniform way.…

Audio and Speech Processing · Electrical Eng. & Systems 2022-01-26 Tassadaq Hussain , Wei-Chien Wang , Mandar Gogate , Kia Dashtipour , Yu Tsao , Xugang Lu , Adeel Ahsan , Amir Hussain

With the development of feed-forward models, the default model for sequence modeling has gradually evolved to replace recurrent networks. Many powerful feed-forward models based on convolutional networks and attention mechanism were…

Computation and Language · Computer Science 2023-10-17 Hongyan Hao , Yan Wang , Siqiao Xue , Yudi Xia , Jian Zhao , Furao Shen

Fault diagnosis plays a crucial role in maintaining the operational integrity of mechanical systems, preventing significant losses due to unexpected failures. As intelligent manufacturing and data-driven approaches evolve, Deep Learning…

Machine Learning · Computer Science 2024-04-01 Zhongzhi Li , Rong Fan , Jingqi Tu , Jinyi Ma , Jianliang Ai , Yiqun Dong

Bioacoustics data from Passive acoustic monitoring (PAM) poses a unique set of challenges for classification, particularly the limited availability of complete and reliable labels in datasets due to annotation uncertainty, biological…

Cardiac auscultation is an essential point-of-care method used for the early diagnosis of heart diseases. Automatic analysis of heart sounds for abnormality detection is faced with the challenges of additive noise and sensor-dependent…

Sound · Computer Science 2021-06-04 Farhat Binte Azam , Md. Istiaq Ansari , Ian Mclane , Taufiq Hasan

We propose an outlier robust multivariate time series model which can be used for detecting previously unseen anomalous sounds based on noisy training data. The presented approach doesn't assume the presence of labeled anomalies in the…

Sound · Computer Science 2022-02-07 Wo Jae Lee , Karim Helwani , Arvindh Krishnaswamy , Srikanth Tenneti

A deep neural network solution for time-scale modification (TSM) focused on large stretching factors is proposed, targeting environmental sounds. Traditional TSM artifacts such as transient smearing, loss of presence, and phasiness are…

Audio and Speech Processing · Electrical Eng. & Systems 2022-12-01 Leonardo Fierro , Alec Wright , Vesa Välimäki , Matti Hämäläinen

Attempts to develop speech enhancement algorithms with improved speech intelligibility for cochlear implant (CI) users have met with limited success. To improve speech enhancement methods for CI users, we propose to perform speech…

Sound · Computer Science 2019-07-08 Nursadul Mamun , Soheil Khorram , John H. L. Hansen

Speech enhancement in the time domain is becoming increasingly popular in recent years, due to its capability to jointly enhance both the magnitude and the phase of speech. In this work, we propose a dense convolutional network (DCN) with…

Audio and Speech Processing · Electrical Eng. & Systems 2021-03-09 Ashutosh Pandey , DeLiang Wang

The human auditory system has the ability to selectively focus on key speech elements in an audio stream while giving secondary attention to less relevant areas such as noise or distortion within the background, dynamically adjusting its…

Audio and Speech Processing · Electrical Eng. & Systems 2026-04-09 Nursadul Mamun , John H. L. Hansen

Time series anomaly detection plays a critical role in automated monitoring systems. Most previous deep learning efforts related to time series anomaly detection were based on recurrent neural networks (RNN). In this paper, we propose a…

Machine Learning · Computer Science 2019-06-03 Tailai Wen , Roy Keyes

Large language models (LLMs) often generate self-contradictory outputs, which severely impacts their reliability and hinders their adoption in practical applications. In video-language models (Video-LLMs), this phenomenon recently draws the…

Computer Vision and Pattern Recognition · Computer Science 2026-03-24 Chengzhi Li , Heyan Huang , Ping Jian , Zhen Yang , Yaning Tian , Zhongbin Guo

The speech enhancement task usually consists of removing additive noise or reverberation that partially mask spoken utterances, affecting their intelligibility. However, little attention is drawn to other, perhaps more aggressive signal…

Sound · Computer Science 2019-04-09 Santiago Pascual , Joan Serrà , Antonio Bonafonte

The utilization of Wi-Fi based human activity recognition has gained considerable interest in recent times, primarily owing to its applications in various domains such as healthcare for monitoring breath and heart rate, security, elderly…

Signal Processing · Electrical Eng. & Systems 2024-01-12 Chih-Yang Lin , Chia-Yu Lin , Yu-Tso Liu , Timothy K. Shih

We propose a novel method for Acoustic Event Detection (AED). In contrast to speech, sounds coming from acoustic events may be produced by a wide variety of sources. Furthermore, distinguishing them often requires analyzing an extended time…

Sound · Computer Science 2016-12-09 Naoya Takahashi , Michael Gygli , Beat Pfister , Luc Van Gool

In this paper we propose a data augmentation method for time series with irregular sampling, Time-Conditional Generative Adversarial Network (T-CGAN). Our approach is based on Conditional Generative Adversarial Networks (CGAN), where the…

Machine Learning · Computer Science 2019-02-04 Giorgia Ramponi , Pavlos Protopapas , Marco Brambilla , Ryan Janssen

In this paper, in order to further deal with the performance degradation caused by ignoring the phase information in conventional speech enhancement systems, we proposed a temporal dilated convolutional generative adversarial network…

Audio and Speech Processing · Electrical Eng. & Systems 2020-10-01 Shuaishuai Ye , Xinhui Hu , Xinkang Xu

Anomaly detection in time series data, to identify points that deviate from normal behaviour, is a common problem in various domains such as manufacturing, medical imaging, and cybersecurity. Recently, Generative Adversarial Networks (GANs)…

Machine Learning · Computer Science 2025-05-27 Md Abul Bashar , Richi Nayak

Formant tracking is one of the most fundamental problems in speech processing. Traditionally, formants are estimated using signal processing methods. Recent studies showed that generic convolutional architectures can outperform recurrent…

Audio and Speech Processing · Electrical Eng. & Systems 2020-08-11 Wang Dai , Jinsong Zhang , Yingming Gao , Wei Wei , Dengfeng Ke , Binghuai Lin , Yanlu Xie

Motivated by the fact that characteristics of different sound classes are highly diverse in different temporal scales and hierarchical levels, a novel deep convolutional neural network (CNN) architecture is proposed for the environmental…

Sound · Computer Science 2018-06-15 Boqing Zhu , Kele Xu , Dezhi Wang , Lilun Zhang , Bo Li , Yuxing Peng