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Voice Activity Detection (VAD) refers to the problem of distinguishing speech segments from background noise. Numerous approaches have been proposed for this purpose. Some are based on features derived from the power spectral density,…

Sound · Computer Science 2019-03-08 Thomas Drugman , Yannis Stylianou , Yusuke Kida , Masami Akamine

Voice Activity Detection (VAD) is an important pre-processing step in a wide variety of speech processing systems. VAD should in a practical application be able to detect speech in both noisy and noise-free environments, while not…

Audio and Speech Processing · Electrical Eng. & Systems 2022-07-06 Claus Meyer Larsen , Peter Koch , Zheng-Hua Tan

Voice Activity Detection (VAD) in the presence of background noise remains a challenging problem in speech processing. Accurate VAD is essential in automatic speech recognition, voice-to-text, conversational agents, etc, where noise can…

Audio and Speech Processing · Electrical Eng. & Systems 2025-07-31 Hamed Jafarzadeh Asl , Mahsa Ghazvini Nejad , Amin Edraki , Masoud Asgharian , Vahid Partovi Nia

This paper presents a new hybrid architecture for voice activity detection (VAD) incorporating both convolutional neural network (CNN) and bidirectional long short-term memory (BiLSTM) layers trained in an end-to-end manner. In addition, we…

Audio and Speech Processing · Electrical Eng. & Systems 2021-03-08 Nicholas Wilkinson , Thomas Niesler

For speech interaction, voice activity detection (VAD) is often used as a front-end. However, traditional VAD algorithms usually need to wait for a continuous tail silence to reach a preset maximum duration before segmentation, resulting in…

Audio and Speech Processing · Electrical Eng. & Systems 2023-05-23 Mohan Shi , Yuchun Shu , Lingyun Zuo , Qian Chen , Shiliang Zhang , Jie Zhang , Li-Rong Dai

Voice Activity Detection (VAD) plays a key role in speech processing, often utilizing hand-crafted or neural features. This study examines the effectiveness of Mel-Frequency Cepstral Coefficients (MFCCs) and pre-trained model (PTM)…

Sound · Computer Science 2025-06-03 Kumud Tripathi , Chowdam Venkata Kumar , Pankaj Wasnik

The task of voice activity detection (VAD) is an often required module in various speech processing, analysis and classification tasks. While state-of-the-art neural network based VADs can achieve great results, they often exceed…

Audio and Speech Processing · Electrical Eng. & Systems 2021-05-20 Sebastian Braun , Ivan Tashev

Voice activity detection (VAD) is the task of detecting speech in an audio stream, which is challenging due to numerous unseen noises and low signal-to-noise ratios in real environments. Recently, neural network-based VADs have alleviated…

Sound · Computer Science 2024-05-28 Jidong Jia , Pei Zhao , Di Wang

Voice activity detection (VAD) is essential for speech-driven applications, but remains far from perfect in noisy and resource-limited environments. Existing methods often lack robustness to noise, and their frame-wise classification losses…

Sound · Computer Science 2025-08-29 Chien-Chun Wang , En-Lun Yu , Jeih-Weih Hung , Shih-Chieh Huang , Berlin Chen

Voice activity detection (VAD), which classifies frames as speech or non-speech, is an important module in many speech applications including speaker verification. In this paper, we propose a novel method, called self-adaptive soft VAD, to…

Audio and Speech Processing · Electrical Eng. & Systems 2020-02-25 Youngmoon Jung , Yeunju Choi , Hoirin Kim

In the realm of digital audio processing, Voice Activity Detection (VAD) plays a pivotal role in distinguishing speech from non-speech elements, a task that becomes increasingly complex in noisy environments. This paper details the…

Sound · Computer Science 2023-12-12 Joshua Ball

Keyword spotting (KWS) and speaker verification (SV) have been studied independently although it is known that acoustic and speaker domains are complementary. In this paper, we propose a multi-task network that performs KWS and SV…

Audio and Speech Processing · Electrical Eng. & Systems 2020-08-10 Myunghun Jung , Youngmoon Jung , Jahyun Goo , Hoirin Kim

Voice activity detection (VAD) remains a challenge in noisy environments. With access to multiple microphones, prior studies have attempted to improve the noise robustness of VAD by creating multi-channel VAD (MVAD) methods. However, MVAD…

Voice activity detection (VAD) is an essential pre-processing step for tasks such as automatic speech recognition (ASR) and speaker recognition. A basic goal is to remove silent segments within an audio, while a more general VAD system…

Audio and Speech Processing · Electrical Eng. & Systems 2020-09-22 Yefei Chen , Shuai Wang , Yanmin Qian , Kai Yu

Various neural network-based approaches have been proposed for more robust and accurate voice activity detection (VAD). Manual design of such neural architectures is an error-prone and time-consuming process, which prompted the development…

Sound · Computer Science 2022-10-05 Daniel Rho , Jinhyeok Park , Jong Hwan Ko

Voice activity detection (VAD) is an important pre-processing step for speech technology applications. The task consists of deriving segment boundaries of audio signals which contain voicing information. In recent years, it has been shown…

Audio and Speech Processing · Electrical Eng. & Systems 2023-03-28 Eklavya Sarkar , RaviShankar Prasad , Mathew Magimai. -Doss

Speech activity detection (SAD) plays an important role in current speech processing systems, including automatic speech recognition (ASR). SAD is particularly difficult in environments with acoustic noise. A practical solution is to…

Computation and Language · Computer Science 2023-05-15 Fei Tao , Carlos Busso

Voice Activity Detection (VAD) aims at detecting speech segments on an audio signal, which is a necessary first step for many today's speech based applications. Current state-of-the-art methods focus on training a neural network exploiting…

Audio and Speech Processing · Electrical Eng. & Systems 2022-09-23 Sina Alisamir , Fabien Ringeval , Francois Portet

Visual voice activity detection (V-VAD) uses visual features to predict whether a person is speaking or not. V-VAD is useful whenever audio VAD (A-VAD) is inefficient either because the acoustic signal is difficult to analyze or because it…

Computer Vision and Pattern Recognition · Computer Science 2020-10-19 Sylvain Guy , Stéphane Lathuilière , Pablo Mesejo , Radu Horaud

Voice activity detection (VAD) makes a distinction between speech and non-speech and its performance is of crucial importance for speech based services. Recently, deep neural network (DNN)-based VADs have achieved better performance than…

Audio and Speech Processing · Electrical Eng. & Systems 2020-08-14 Zhenpeng Zheng , Jianzong Wang , Ning Cheng , Jian Luo , Jing Xiao
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