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The past decade has witnessed substantial growth of data-driven speech enhancement (SE) techniques thanks to deep learning. While existing approaches have shown impressive performance in some common datasets, most of them are designed only…

Audio and Speech Processing · Electrical Eng. & Systems 2024-02-19 Wangyou Zhang , Kohei Saijo , Zhong-Qiu Wang , Shinji Watanabe , Yanmin Qian

We propose a new method of generating meaningful embeddings for speech, changes to four commonly used meta learning approaches to enable them to perform keyword spotting in continuous signals and an approach of combining their outcomes into…

Audio and Speech Processing · Electrical Eng. & Systems 2021-02-26 Florian Lux , Ngoc Thang Vu

Noise robustness remains a critical challenge for deploying neural speech codecs in real-world acoustic scenarios where background noise is often inevitable. A key observation we make is that even slight input noise perturbations can cause…

Audio and Speech Processing · Electrical Eng. & Systems 2025-10-14 Rui-Chen Zheng , Yang Ai , Hui-Peng Du , Li-Rong Dai

Keyword spotting (KWS) is one of the speech recognition tasks most sensitive to the quality of the feature representation. However, the research on KWS has traditionally focused on new model topologies, putting little emphasis on other…

Audio and Speech Processing · Electrical Eng. & Systems 2024-07-08 Douglas Baptista de Souza , Khaled Jamal Bakri , Fernanda Ferreira , Juliana Inacio

The optimization of a wavelet-based algorithm to improve speech intelligibility along with the full data set and results are reported. The discrete-time speech signal is split into frequency sub-bands via a multi-level discrete wavelet…

Sound · Computer Science 2022-07-25 Tianqu Kang , Anh-Dung Dinh , Binghong Wang , Tianyuan Du , Yijia Chen , Kevin Chau

Speech enhancement for voice pickup in hearables aims to improve the user's voice by suppressing noise and interfering talkers, while maintaining own-voice quality. For single-channel methods, it is particularly challenging to distinguish…

Audio and Speech Processing · Electrical Eng. & Systems 2026-02-05 Mattes Ohlenbusch , Mikolaj Kegler , Marko Stamenovic

Recent speech enhancement (SE) models increasingly leverage self-supervised learning (SSL) representations for their rich semantic information. Typically, intermediate features are aggregated into a single representation via a lightweight…

Sound · Computer Science 2026-02-02 Seungu Han , Sungho Lee , Kyogu Lee

Keyword spotting (KWS) is beneficial for voice-based user interactions with low-power devices at the edge. The edge devices are usually always-on, so edge computing brings bandwidth savings and privacy protection. The devices typically have…

Sound · Computer Science 2022-08-05 Jingyi Wang , Shengchen Li

Speech enhancement (SE) methods mainly focus on recovering clean speech from noisy input. In real-world speech communication, however, noises often exist in not only speaker but also listener environments. Although SE methods can suppress…

Audio and Speech Processing · Electrical Eng. & Systems 2022-03-23 Haoyu Li , Yun Liu , Junichi Yamagishi

Speech separation has been successfully applied as a frontend processing module of conversation transcription systems thanks to its ability to handle overlapped speech and its flexibility to combine with downstream tasks such as automatic…

Audio and Speech Processing · Electrical Eng. & Systems 2021-07-06 Jian Wu , Zhuo Chen , Sanyuan Chen , Yu Wu , Takuya Yoshioka , Naoyuki Kanda , Shujie Liu , Jinyu Li

Keyword spotting (KWS) has become an indispensable part of many intelligent devices surrounding us, as audio is one of the most efficient ways of interacting with these devices. The accuracy and performance of KWS solutions have been the…

Sound · Computer Science 2021-11-10 Mehmet Gorkem Ulkar , Osman Erman Okman

Perceptually-inspired objective functions such as the perceptual evaluation of speech quality (PESQ), signal-to-distortion ratio (SDR), and short-time objective intelligibility (STOI), have recently been used to optimize performance of…

Audio and Speech Processing · Electrical Eng. & Systems 2023-03-27 Khandokar Md. Nayem , Donald S. Williamson

Speech enhancement (SE) performance is known to depend on noise characteristics and signal to noise ratio (SNR), yet intrinsic properties of the clean speech signal itself remain an underexplored factor. In this work, we systematically…

Audio and Speech Processing · Electrical Eng. & Systems 2025-09-24 Mingchi Hou , Ina Kodrasi

Smart audio devices are gated by an always-on lightweight keyword spotting program to reduce power consumption. It is however challenging to design models that have both high accuracy and low latency for accurate and fast responsiveness.…

Audio and Speech Processing · Electrical Eng. & Systems 2021-02-23 Bo Zhang , Wenfeng Li , Qingyuan Li , Weiji Zhuang , Xiangxiang Chu , Yujun Wang

For a speech-enhancement algorithm, it is highly desirable to simultaneously improve perceptual quality and recognition rate. Thanks to computational costs and model complexities, it is challenging to train a model that effectively…

Machine Learning · Computer Science 2018-02-19 Rasool Fakoor , Xiaodong He , Ivan Tashev , Shuayb Zarar

Speech quality estimation has recently undergone a paradigm shift from human-hearing expert designs to machine-learning models. However, current models rely mainly on supervised learning, which is time-consuming and expensive for label…

Sound · Computer Science 2024-02-27 Szu-Wei Fu , Kuo-Hsuan Hung , Yu Tsao , Yu-Chiang Frank Wang

With the increasing prevalence of voice-activated devices and applications, keyword spotting (KWS) models enable users to interact with technology hands-free, enhancing convenience and accessibility in various contexts. Deploying KWS models…

Audio and Speech Processing · Electrical Eng. & Systems 2025-04-29 Jonathan Svirsky , Uri Shaham , Ofir Lindenbaum

In this paper, a novel architecture for speaker recognition is proposed by cascading speech enhancement and speaker processing. Its aim is to improve speaker recognition performance when speech signals are corrupted by noise. Instead of…

Computation and Language · Computer Science 2020-05-25 Yanpei Shi , Qiang Huang , Thomas Hain

Noise robustness is critical when applying automatic speech recognition (ASR) in real-world scenarios. One solution involves the used of speech enhancement (SE) models as the front end of ASR. However, neural network-based (NN-based) SE…

Although deep learning (DL) has achieved notable progress in speech enhancement (SE), further research is still required for a DL-based SE system to adapt effectively and efficiently to particular speakers. In this study, we propose a novel…

Audio and Speech Processing · Electrical Eng. & Systems 2021-11-11 Cheng Yu , Szu-Wei Fu , Tsun-An Hsieh , Yu Tsao , Mirco Ravanelli