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User-defined keyword spotting (KWS) is crucial for personalized voice interaction, yet existing methods face several challenges: (1) insufficient discriminability among confusable words, (2) performance inconsistency across speakers with…

Audio and Speech Processing · Electrical Eng. & Systems 2026-05-22 Zhiqi Ai , Han Cheng , Shiyi Mu , Xinnuo Li , Yongjin Zhou , Shugong Xu

Keyword Spotting plays a critical role in enabling hands-free interaction for battery-powered edge devices. Few-Shot Keyword Spotting (FS-KWS) addresses the scalability and adaptability challenges of traditional systems by enabling…

Audio and Speech Processing · Electrical Eng. & Systems 2025-10-09 Alican Gok , Oguzhan Buyuksolak , Osman Erman Okman , Murat Saraclar

This paper proposes a self-learning method to incrementally train (fine-tune) a personalized Keyword Spotting (KWS) model after the deployment on ultra-low power smart audio sensors. We address the fundamental problem of the absence of…

Sound · Computer Science 2025-03-10 Manuele Rusci , Francesco Paci , Marco Fariselli , Eric Flamand , Tinne Tuytelaars

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

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

In this paper, we investigate representation learning for low-resource keyword spotting (KWS). The main challenges of KWS are limited labeled data and limited available device resources. To address those challenges, we explore…

Sound · Computer Science 2023-03-21 Fan Cui , Liyong Guo , Quandong Wang , Peng Gao , Yujun Wang

Keyword spotting systems often struggle to generalize to a diverse population with various accents and age groups. To address this challenge, we propose a novel approach that integrates speaker information into keyword spotting using…

Audio and Speech Processing · Electrical Eng. & Systems 2023-11-08 Beltrán Labrador , Pai Zhu , Guanlong Zhao , Angelo Scorza Scarpati , Quan Wang , Alicia Lozano-Diez , Alex Park , Ignacio López Moreno

Keyword spotting (KWS) is becoming a ubiquitous need with the advancement in artificial intelligence and smart devices. Recent work in this field have focused on several different architectures to achieve good results on datasets with low…

Audio and Speech Processing · Electrical Eng. & Systems 2021-09-17 Anwesh Mohanty , Adrian Frischknecht , Christoph Gerum , Oliver Bringmann

Open vocabulary keyword spotting is a crucial and challenging task in automatic speech recognition (ASR) that focuses on detecting user-defined keywords within a spoken utterance. Keyword spotting methods commonly map the audio utterance…

Audio and Speech Processing · Electrical Eng. & Systems 2023-09-18 Aviv Navon , Aviv Shamsian , Neta Glazer , Gill Hetz , Joseph Keshet

The performance of the keyword spotting (KWS) system based on audio modality, commonly measured in false alarms and false rejects, degrades significantly under the far field and noisy conditions. Therefore, audio-visual keyword spotting,…

Sound · Computer Science 2023-03-15 Ao Zhang , He Wang , Pengcheng Guo , Yihui Fu , Lei Xie , Yingying Gao , Shilei Zhang , Junlan Feng

Keyword spotting (KWS) is experiencing an upswing due to the pervasiveness of small electronic devices that allow interaction with them via speech. Often, KWS systems are speaker-independent, which means that any person --user or not--…

Sound · Computer Science 2019-06-27 Iván López-Espejo , Zheng-Hua Tan , Jesper Jensen

End-to-end (E2E) approaches to keyword search (KWS) are considerably simpler in terms of training and indexing complexity when compared to approaches which use the output of automatic speech recognition (ASR) systems. This simplification…

Audio and Speech Processing · Electrical Eng. & Systems 2024-07-08 Bolaji Yusuf , Murat Saraçlar

Detecting occurrences of keywords with keyword spotting (KWS) systems requires thresholding continuous detection scores. Selecting appropriate thresholds is a non-trivial task, typically relying on optimizing performance on a validation…

Audio and Speech Processing · Electrical Eng. & Systems 2026-01-23 Kevin Wilkinghoff , Alessia Cornaggia-Urrigshardt , Zheng-Hua Tan

In this paper, we propose an attention-based end-to-end model for multi-channel keyword spotting (KWS), which is trained to optimize the KWS result directly. As a result, our model outperforms the baseline model with signal pre-processing…

Sound · Computer Science 2018-11-06 Haitong Zhang , Junbo Zhang , Yujun Wang

Spoken keyword spotting (KWS) deals with the identification of keywords in audio streams and has become a fast-growing technology thanks to the paradigm shift introduced by deep learning a few years ago. This has allowed the rapid embedding…

Sound · Computer Science 2021-11-23 Iván López-Espejo , Zheng-Hua Tan , John Hansen , Jesper Jensen

Speech recognition is a sequence prediction problem. Besides employing various deep learning approaches for framelevel classification, sequence-level discriminative training has been proved to be indispensable to achieve the…

Computation and Language · Computer Science 2018-08-20 Zhehuai Chen , Yanmin Qian , Kai Yu

In this paper, we investigated a speech augmentation based unsupervised learning approach for keyword spotting (KWS) task. KWS is a useful speech application, yet also heavily depends on the labeled data. We designed a CNN-Attention…

Sound · Computer Science 2022-05-31 Jian Luo , Jianzong Wang , Ning Cheng , Haobin Tang , Jing Xiao

Keyword Spotting (KWS) models are becoming increasingly integrated into various systems, e.g. voice assistants. To achieve satisfactory performance, these models typically rely on a large amount of labelled data, limiting their applications…

Sound · Computer Science 2023-05-25 Holger Severin Bovbjerg , Zheng-Hua Tan

Real-world complex acoustic environments especially the ones with a low signal-to-noise ratio (SNR) will bring tremendous challenges to a keyword spotting (KWS) system. Inspired by the recent advances of neural speech enhancement and…

Audio and Speech Processing · Electrical Eng. & Systems 2023-06-14 Shubo Lv , Xiong Wang , Sining Sun , Long Ma , Lei Xie

Keyword spotting (KWS) on mobile devices generally requires a small memory footprint. However, most current models still maintain a large number of parameters in order to ensure good performance. In this paper, we propose a temporally…

Sound · Computer Science 2021-08-30 Shenghua Hu , Jing Wang , Yujun Wang , Wenjing Yang