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Conventional Convolutional Neural Networks (CNNs) in the real domain have been widely used for audio classification. However, their convolution operations process multi-channel inputs independently, limiting the ability to capture…

Audio and Speech Processing · Electrical Eng. & Systems 2025-10-27 Arshdeep Singh , Vinayak Abrol , Mark D. Plumbley

Audio scene classification, the problem of predicting class labels of audio scenes, has drawn lots of attention during the last several years. However, it remains challenging and falls short of accuracy and efficiency. Recently,…

Computer Vision and Pattern Recognition · Computer Science 2018-05-21 Kele Xu , Dawei Feng , Haibo Mi , Boqing Zhu , Dezhi Wang , Lilun Zhang , Hengxing Cai , Shuwen Liu

This paper compares machine learning approaches with different input data formats for the classification of acoustic emission (AE) signals. AE signals are a promising monitoring technique in many structural health monitoring applications.…

Signal Processing · Electrical Eng. & Systems 2025-01-03 Uditha Muthumala , Yuxuan Zhang , Luciano Sebastian Martinez-Rau , Sebastian Bader

Feature selection is crucial for pinpointing relevant features in high-dimensional datasets, mitigating the 'curse of dimensionality,' and enhancing machine learning performance. Traditional feature selection methods for classification use…

Machine Learning · Computer Science 2025-04-08 Rittwika Kansabanik , Adrian Barbu

A novel and efficient end-to-end learning model for automatic modulation classification is proposed for wireless spectrum monitoring applications, which automatically learns from the time domain in-phase and quadrature data without…

Signal Processing · Electrical Eng. & Systems 2021-01-21 Kaisheng Liao , Yaodong Zhao , Jie Gu , Yaping Zhang , Yi Zhong

Previous attempts at music artist classification use frame level audio features which summarize frequency content within short intervals of time. Comparatively, more recent music information retrieval tasks take advantage of temporal…

Sound · Computer Science 2019-03-18 Zain Nasrullah , Yue Zhao

Audio classification is vital in areas such as speech and music recognition. Feature extraction from the audio signal, such as Mel-Spectrograms and MFCCs, is a critical step in audio classification. These features are transformed into…

Sound · Computer Science 2023-07-06 C. S. Sonali , Chinmayi B S , Ahana Balasubramanian

Spectrogram-based representations have grown to dominate the feature space for deep learning audio analysis systems, and are often adopted for speech analysis also. Initially, the primary motivator for spectrogram-based representations was…

Audio and Speech Processing · Electrical Eng. & Systems 2026-03-17 Ian McLoughlin , Lam Pham , Yan Song , Xiaoxiao Miao , Huy Phan , Pengfei Cai , Qing Gu , Jiang Nan , Haoyu Song , Donny Soh

Sound events often occur in unstructured environments where they exhibit wide variations in their frequency content and temporal structure. Convolutional neural networks (CNN) are able to extract higher level features that are invariant to…

Machine Learning · Computer Science 2017-05-31 Emre Çakır , Giambattista Parascandolo , Toni Heittola , Heikki Huttunen , Tuomas Virtanen

Existing audio analysis methods generally first transform the audio stream to spectrogram, and then feed it into CNN for further analysis. A standard CNN recognizes specific visual patterns over feature map, then pools for high-level…

Sound · Computer Science 2023-03-16 Yulin Pan , Xiangteng He , Biao Gong , Yuxin Peng , Yiliang Lv

Hyperspectral imaging provides detailed information about the scanned objects, as it captures their spectral characteristics within a large number of wavelength bands. Classification of such data has become an active research topic due to…

Computer Vision and Pattern Recognition · Computer Science 2019-07-30 Jakub Nalepa , Lukasz Tulczyjew , Michal Myller , Michal Kawulok

In this work, we propose an ensemble of classifiers to distinguish between various degrees of abnormalities of the heart using Phonocardiogram (PCG) signals acquired using digital stethoscopes in a clinical setting, for the INTERSPEECH 2018…

Computer Vision and Pattern Recognition · Computer Science 2019-04-30 Ahmed Imtiaz Humayun , Md. Tauhiduzzaman Khan , Shabnam Ghaffarzadegan , Zhe Feng , Taufiq Hasan

We investigate the potential of stochastic neural networks for learning effective waveform-based acoustic models. The waveform-based setting, inherent to fully end-to-end speech recognition systems, is motivated by several comparative…

Machine Learning · Statistics 2021-08-17 Dino Oglic , Zoran Cvetkovic , Peter Sollich

Environmental sound classification (ESC) is a challenging problem due to the complexity of sounds. The ESC performance is heavily dependent on the effectiveness of representative features extracted from the environmental sounds. However,…

Sound · Computer Science 2019-07-05 Zhichao Zhang , Shugong Xu , Tianhao Qiao , Shunqing Zhang , Shan Cao

One key step in audio signal processing is to transform the raw signal into representations that are efficient for encoding the original information. Traditionally, people transform the audio into spectral representations, as a function of…

Sound · Computer Science 2016-11-30 Shuhui Qu , Juncheng Li , Wei Dai , Samarjit Das

Anomaly detection has many important applications, such as monitoring industrial equipment. Despite recent advances in anomaly detection with deep-learning methods, it is unclear how existing solutions would perform under…

Sound · Computer Science 2022-04-06 Bingqing Chen , Luca Bondi , Samarjit Das

Neural network based architectures used for sound recognition are usually adapted from other application domains such as image recognition, which may not harness the time-frequency representation of a signal. The ConditionaL Neural Networks…

Sound · Computer Science 2019-04-30 Fady Medhat , David Chesmore , John Robinson

Music genre classification is an area that utilizes machine learning models and techniques for the processing of audio signals, in which applications range from content recommendation systems to music recommendation systems. In this…

Sound · Computer Science 2024-05-27 Keoikantse Mogonediwa

Currently available benchmarks for few-shot learning (machine learning with few training examples) are limited in the domains they cover, primarily focusing on image classification. This work aims to alleviate this reliance on image-based…

Sound · Computer Science 2022-04-12 Calum Heggan , Sam Budgett , Timothy Hospedales , Mehrdad Yaghoobi

Even in the absence of any explicit semantic annotation, vast collections of audio recordings provide valuable information for learning the categorical structure of sounds. We consider several class-agnostic semantic constraints that apply…

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