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In this work, we compare the performance of three selected techniques in open set acoustic scenes classification (ASC). We test thresholding of the softmax output of a deep network classifier, which is the most popular technique nowadays…

Audio and Speech Processing · Electrical Eng. & Systems 2020-08-18 Zuzanna Kwiatkowska , Beniamin Kalinowski , Michał Kośmider , Krzysztof Rykaczewski

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

Spectrum sensing is one of the means of utilizing the scarce source of wireless spectrum efficiently. In this paper, a convolutional neural network (CNN) model employing spectral correlation function which is an effective characterization…

Signal Processing · Electrical Eng. & Systems 2021-04-29 Kürşat Tekbıyık , Özkan Akbunar , Ali Rıza Ekti , Ali Görçin , Güneş Karabulut Kurt , Khalid A. Qaraqe

Audio-Visual scene understanding is a challenging problem due to the unstructured spatial-temporal relations that exist in the audio signals and spatial layouts of different objects and various texture patterns in the visual images.…

Computer Vision and Pattern Recognition · Computer Science 2023-01-03 Liguang Zhou , Yuhongze Zhou , Xiaonan Qi , Junjie Hu , Tin Lun Lam , Yangsheng Xu

Audio DNNs have demonstrated impressive performance on various machine listening tasks; however, most of their representations are computationally costly and uninterpretable, leaving room for optimization. Here, we propose a novel approach…

Sound · Computer Science 2025-08-20 Andrew Chang , Yike Li , Iran R. Roman , David Poeppel

We present an iVector based Acoustic Scene Classification (ASC) system suited for real life settings where active foreground speech can be present. In the proposed system, each recording is represented by a fixed-length iVector that models…

Audio and Speech Processing · Electrical Eng. & Systems 2021-08-03 Siyuan Song , Brecht Desplanques , Celest De Moor , Kris Demuynck , Nilesh Madhu

Acoustic events are sounds with well-defined spectro-temporal characteristics which can be associated with the physical objects generating them. Acoustic scenes are collections of such acoustic events in no specific temporal order. Given…

Sound · Computer Science 2022-06-28 Rahil Parikh , Harshavardhan Sundar , Ming Sun , Chao Wang , Spyros Matsoukas

In the last several years the use of neural networks as tools to automate species classification from digital data has increased. This has been due in part to the high classification accuracy of image classification through Convolutional…

Sound · Computer Science 2025-09-16 Sergio Poo Hernandez , Vadim Bulitko , Erin Bayne

Acoustic scene classification (ASC) suffers from device-induced domain shift, especially when labels are limited. Prior work focuses on curriculum-based training schedules that structure data presentation by ordering or reweighting training…

Sound · Computer Science 2026-02-02 Peihong Zhang , Yuxuan Liu , Rui Sang , Zhixin Li , Yiqiang Cai , Yizhou Tan , Shengchen Li

Speaker verification aims to verify whether an input speech corresponds to the claimed speaker, and conventionally, this kind of system is deployed based on single-stream scenario, wherein the feature extractor operates in full frequency…

Sound · Computer Science 2025-09-03 Wei Yao , Shen Chen , Jiamin Cui , Yaolin Lou

Since convolutional neural networks (CNNs) have revolutionized the image processing field, they have been widely applied in the audio context. A common approach is to convert the one-dimensional audio signal time series to two-dimensional…

Sound · Computer Science 2022-01-11 Alessandro Mari , Arash Salarian

The introduction of large-scale audio datasets, such as AudioSet, paved the way for Transformers to conquer the audio domain and replace CNNs as the state-of-the-art neural network architecture for many tasks. Audio Spectrogram Transformers…

Sound · Computer Science 2023-10-25 Florian Schmid , Khaled Koutini , Gerhard Widmer

The enhancement of spectrum efficiency and the realization of secure spectrum utilization are critically dependent on spectrum cognition. However, existing spectrum cognition methods often exhibit limited generalization and suboptimal…

Signal Processing · Electrical Eng. & Systems 2025-08-12 Chunyu Liu , Hao Zhang , Wei Wu , Fuhui Zhou , Qihui Wu , Derrick Wing Kwan Ng , Chan-Byoung Chae

Recent advances in the Active Speaker Detection (ASD) problem build upon a two-stage process: feature extraction and spatio-temporal context aggregation. In this paper, we propose an end-to-end ASD workflow where feature learning and…

Computer Vision and Pattern Recognition · Computer Science 2022-07-26 Juan Leon Alcazar , Moritz Cordes , Chen Zhao , Bernard Ghanem

Convolutional Neural Networks (CNN) has achieved a great success in image recognition task by automatically learning a hierarchical feature representation from raw data. While the majority of Time-Series Classification (TSC) literature is…

Computer Vision and Pattern Recognition · Computer Science 2017-10-10 Nima Hatami , Yann Gavet , Johan Debayle

Accurate sleep stage classification across datasets remains challenging due to variability in EEG channel montages, sampling rates, recording environments, and subject populations. Although deep learning has shown considerable promise for…

Machine Learning · Computer Science 2026-05-11 Unaza Tallal , Shruti Kshirsagar , Ankita Shukla

Convolutional neural networks (CNNs) have been widely used for hyperspectral image classification. As a common process, small cubes are firstly cropped from the hyperspectral image and then fed into CNNs to extract spectral and spatial…

Image and Video Processing · Electrical Eng. & Systems 2020-06-15 Renlong Hang , Zhu Li , Qingshan Liu , Pedram Ghamisi , Shuvra S. Bhattacharyya

In this paper we present our work on Task 1 Acoustic Scene Classi- fication and Task 3 Sound Event Detection in Real Life Recordings. Among our experiments we have low-level and high-level features, classifier optimization and other…

A major advantage of a deep convolutional neural network (CNN) is that the focused receptive field size is increased by stacking multiple convolutional layers. Accordingly, the model can explore the long-range dependency of features from…

Sound · Computer Science 2020-06-17 Xugang Lu , Peng Shen , Sheng Li , Yu Tsao , Hisashi Kawai

This paper proposes a Sub-band Convolutional Neural Network for spoken term classification. Convolutional neural networks (CNNs) have proven to be very effective in acoustic applications such as spoken term classification, keyword spotting,…

Audio and Speech Processing · Electrical Eng. & Systems 2019-07-03 Chieh-Chi Kao , Ming Sun , Yixin Gao , Shiv Vitaladevuni , Chao Wang