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Voice-based interfaces rely on a wake-up word mechanism to initiate communication with devices. However, achieving a robust, energy-efficient, and fast detection remains a challenge. This paper addresses these real production needs by…

Sound · Computer Science 2023-10-18 Fernando López , Jordi Luque , Carlos Segura , Pablo Gómez

We present VoiceAgentRAG, an open-source dual-agent memory router that decouples retrieval from response generation. A background Slow Thinker agent continuously monitors the conversation stream, predicts likely follow-up topics using an…

Retrieval-Augmented Generation (RAG) improves factual grounding in large language models but suffers from substantial latency due to synchronous retrieval. While recent work explores asynchronous retrieval, existing approaches rely on…

Computation and Language · Computer Science 2026-05-19 Wuyang Zhang , Shichao Pei

In this work, we propose a multi-target backdoor attack against speaker identification using position-independent clicking sounds as triggers. Unlike previous single-target approaches, our method targets up to 50 speakers simultaneously,…

Neurodivergent people frequently experience decreased sound tolerance, with estimates suggesting it affects 50-70% of this population. This heightened sensitivity can provoke reactions ranging from mild discomfort to severe distress,…

Audio and Speech Processing · Electrical Eng. & Systems 2025-09-15 Alexander Popescu , Rosie Frost , Milos Cernak

Deep speech classification has achieved tremendous success and greatly promoted the emergence of many real-world applications. However, backdoor attacks present a new security threat to it, particularly with untrustworthy third-party…

Sound · Computer Science 2023-08-15 Zhe Ye , Terui Mao , Li Dong , Diqun Yan

Agent assistance during human-human customer support spoken interactions requires triggering workflows based on the caller's intent (reason for call). Timeliness of prediction is essential for a good user experience. The goal is for a…

Artificial Intelligence · Computer Science 2022-08-16 Mrinal Rawat , Victor Barres

We explore a method for presenting word suggestions for non-visual text input using simultaneous voices. We conduct two perceptual studies and investigate the impact of different presentations of voices on a user's ability to detect which…

Human-Computer Interaction · Computer Science 2025-10-03 Dylan Gaines , Keith Vertanen

In this paper, we address the task of determining whether a given utterance is directed towards a voice-enabled smart-assistant device or not. An undirected utterance is termed as a "false trigger" and false trigger mitigation (FTM) is…

Audio and Speech Processing · Electrical Eng. & Systems 2020-10-22 Pranay Dighe , Erik Marchi , Srikanth Vishnubhotla , Sachin Kajarekar , Devang Naik

Voice dictation is an increasingly important text input modality. Existing systems that allow both dictation and editing-by-voice restrict their command language to flat templates invoked by trigger words. In this work, we study the…

Computation and Language · Computer Science 2023-07-11 Belinda Z. Li , Jason Eisner , Adam Pauls , Sam Thomson

In authentication scenarios, applications of practical speaker verification systems usually require a person to read a dynamic authentication text. Previous studies played an audio adversarial example as a digital signal to perform physical…

Sound · Computer Science 2021-05-20 Weiyi Zhang , Shuning Zhao , Le Liu , Jianmin Li , Xingliang Cheng , Thomas Fang Zheng , Xiaolin Hu

Trigger-word detection plays an important role as the entry point of user's communication with voice assistants. But supporting a particular word as a trigger-word involves huge amount of data collection, augmentation and labelling for that…

Sound · Computer Science 2022-07-28 Sivakumar Balasubramanian , Aditya Jajodia , Gowtham Srinivasan

Deepfake speech utterances can be forged by replacing one or more words in a bona fide utterance with semantically different words synthesized with speech-generative models. While a dedicated synthetic word detector could be developed, we…

Audio and Speech Processing · Electrical Eng. & Systems 2026-03-03 Hoan My Tran , Xin Wang , Wanying Ge , Xuechen Liu , Junichi Yamagishi

This work explores backdoor attacks for automatic speech recognition systems where we inject inaudible triggers. By doing so, we make the backdoor attack challenging to detect for legitimate users, and thus, potentially more dangerous. We…

Cryptography and Security · Computer Science 2023-05-30 Stefanos Koffas , Jing Xu , Mauro Conti , Stjepan Picek

Existing deep learning based speech enhancement mainly employ a data-driven approach, which leverage large amounts of data with a variety of noise types to achieve noise removal from noisy signal. However, the high dependence on the data…

Sound · Computer Science 2024-01-24 Huaying Xue , Xiulian Peng , Yan Lu

Audio deepfakes are increasingly in-differentiable from organic speech, often fooling both authentication systems and human listeners. While many techniques use low-level audio features or optimization black-box model training, focusing on…

Sound · Computer Science 2025-02-21 Kevin Warren , Daniel Olszewski , Seth Layton , Kevin Butler , Carrie Gates , Patrick Traynor

In modern interactive speech-based systems, speech is consumed and transcribed incrementally prior to having disfluencies removed. This post-processing step is crucial for producing clean transcripts and high performance on downstream tasks…

Computation and Language · Computer Science 2022-05-03 Angelica Chen , Vicky Zayats , Daniel D. Walker , Dirk Padfield

Recent advances in AudioLLMs have enabled spoken dialogue systems to move beyond turn-based interaction toward real-time full-duplex communication, where the agent must decide when to speak, yield, or interrupt while the user is still…

Large Language Models (LLMs) are widely used in real-time voice chat applications, typically in combination with text-to-speech (TTS) systems to generate audio responses. However, their large size often leads to noticeable latency between…

Computation and Language · Computer Science 2025-10-09 Shufan Li , Aditya Grover

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