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We present Multiscale Audio Spectrogram Transformer (MAST) for audio classification, which brings the concept of multiscale feature hierarchies to the Audio Spectrogram Transformer (AST). Given an input audio spectrogram, we first patchify…

Audio and Speech Processing · Electrical Eng. & Systems 2023-05-19 Sreyan Ghosh , Ashish Seth , S. Umesh , Dinesh Manocha

A mixed sample data augmentation strategy is proposed to enhance the performance of models on audio scene classification, sound event classification, and speech enhancement tasks. While there have been several augmentation methods shown to…

Sound · Computer Science 2021-08-09 Gwantae Kim , David K. Han , Hanseok Ko

Recently, phase processing is attracting increasinginterest in speech enhancement community. Some researchersintegrate phase estimations module into speech enhancementmodels by using complex-valued short-time Fourier transform(STFT)…

Sound · Computer Science 2019-01-03 Xingjian Du , Mengyao Zhu , Xuan Shi , Xinpeng Zhang , Wen Zhang , Jingdong Chen

In recent years, deep networks have led to dramatic improvements in speech enhancement by framing it as a data-driven pattern recognition problem. In many modern enhancement systems, large amounts of data are used to train a deep network to…

This work introduces PeakNetFP, the first neural audio fingerprinting (AFP) system designed specifically around spectral peaks. This novel system is designed to leverage the sparse spectral coordinates typically computed by traditional…

Transformers have drawn attention in the MIR field for their remarkable performance shown in natural language processing and computer vision. However, prior works in the audio processing domain mostly use Transformer as a temporal feature…

Sound · Computer Science 2021-10-26 Wei-Tsung Lu , Ju-Chiang Wang , Minz Won , Keunwoo Choi , Xuchen Song

Transformer-based audio self-supervised learning (SSL) models commonly use spectrograms, vision-style Transformers, and masked modeling objectives. However, convolutional patchification with temporal downsampling lowers the effective…

Sound · Computer Science 2026-05-15 Kohei Yamamoto , Kosuke Okusa

Recent continual test-time adaptation (CTTA) methods adopt masked image modeling to stabilize learning under distribution shift, yet each treats its masking family $F$ as a fixed design choice and innovates exclusively along the selection…

Recent works have shown that Deep Recurrent Neural Networks using the LSTM architecture can achieve strong single-channel speech enhancement by estimating time-frequency masks. However, these models do not naturally generalize to…

Sound · Computer Science 2020-12-04 Felix Grezes , Zhaoheng Ni , Viet Anh Trinh , Michael Mandel

Recently, deep neural network (DNN) based time-frequency (T-F) mask estimation has shown remarkable effectiveness for speech enhancement. Typically, a single T-F mask is first estimated based on DNN and then used to mask the spectrogram of…

Audio and Speech Processing · Electrical Eng. & Systems 2021-09-29 Liangchen Zhou , Wenbin Jiang , Jingyan Xu , Fei Wen , Peilin Liu

In this paper, we present SpecAugment++, a novel data augmentation method for deep neural networks based acoustic scene classification (ASC). Different from other popular data augmentation methods such as SpecAugment and mixup that only…

Audio and Speech Processing · Electrical Eng. & Systems 2021-06-16 Helin Wang , Yuexian Zou , Wenwu Wang

Automated polyp segmentation is essential for early diagnosis of colorectal cancer, yet developing robust models remains challenging due to limited annotated data and significant performance degradation under domain shift. Although…

Computer Vision and Pattern Recognition · Computer Science 2025-08-12 Haoran Xi , Chen Liu , Xiaolin Li

Complex-valued processing has brought deep learning-based speech enhancement and signal extraction to a new level. Typically, the process is based on a time-frequency (TF) mask which is applied to a noisy spectrogram, while complex masks…

Audio and Speech Processing · Electrical Eng. & Systems 2022-02-02 Hendrik Schröter , Alberto N. Escalante-B. , Tobias Rosenkranz , Andreas Maier

The direct expansion of deep neural network (DNN) based wide-band speech enhancement (SE) to full-band processing faces the challenge of low frequency resolution in low frequency range, which would highly likely lead to deteriorated…

Sound · Computer Science 2022-06-28 Zhongshu Hou , Qinwen Hu , Kai Chen , Jing Lu

In this study, we propose a dense frequency-time attentive network (DeFT-AN) for multichannel speech enhancement. DeFT-AN is a mask estimation network that predicts a complex spectral masking pattern for suppressing the noise and…

Audio and Speech Processing · Electrical Eng. & Systems 2023-03-07 Dongheon Lee , Jung-Woo Choi

Audio event has a hierarchical architecture in both time and frequency and can be grouped together to construct more abstract semantic audio classes. In this work, we develop a multiscale audio spectrogram Transformer (MAST) that employs…

Sound · Computer Science 2023-03-21 Wentao Zhu , Mohamed Omar

In this paper, we address the problem of multichannel speech enhancement in the short-time Fourier transform (STFT) domain. A long short-time memory (LSTM) network takes as input a sequence of STFT coefficients associated with a frequency…

Sound · Computer Science 2020-09-24 Xiaofei LI , Radu Horaud

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

Environmental sound classification (ESC) is a challenging problem due to the unstructured spatial-temporal relations that exist in the sound signals. Recently, many studies have focused on abstracting features from convolutional neural…

Sound · Computer Science 2022-05-31 Liguang Zhou , Yuhongze Zhou , Xiaonan Qi , Junjie Hu , Tin Lun Lam , Yangsheng Xu

In multichannel speech enhancement, effectively capturing spatial and spectral information across different microphones is crucial for noise reduction. Traditional methods, such as CNN or LSTM, attempt to model the temporal dynamics of…

Audio and Speech Processing · Electrical Eng. & Systems 2025-01-15 Wenze Ren , Haibin Wu , Yi-Cheng Lin , Xuanjun Chen , Rong Chao , Kuo-Hsuan Hung , You-Jin Li , Wen-Yuan Ting , Hsin-Min Wang , Yu Tsao
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