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Speech enhancement in hearing aids remains a difficult task in nonstationary acoustic environments, mainly because current signal processing algorithms rely on fixed, manually tuned parameters that cannot adapt in situ to different users or…

Conventional audio equalization is a static process that requires manual and cumbersome adjustments to adapt to changing listening contexts (e.g., mood, location, or social setting). In this paper, we introduce a Large Language Model…

An unsupervised text-to-speech synthesis (TTS) system learns to generate speech waveforms corresponding to any written sentence in a language by observing: 1) a collection of untranscribed speech waveforms in that language; 2) a collection…

Audio and Speech Processing · Electrical Eng. & Systems 2022-08-17 Junrui Ni , Liming Wang , Heting Gao , Kaizhi Qian , Yang Zhang , Shiyu Chang , Mark Hasegawa-Johnson

Optimizing policies based on human preferences is key to aligning language models with human intent. This work focuses on reward modeling, a core component in reinforcement learning from human feedback (RLHF), and offline preference…

Machine Learning · Computer Science 2025-06-02 Soichiro Nishimori , Yu-Jie Zhang , Thanawat Lodkaew , Masashi Sugiyama

Singing voice synthesis (SVS) has seen remarkable advancements in recent years. However, compared to speech and general audio data, publicly available singing datasets remain limited. In practice, this data scarcity often leads to…

Sound · Computer Science 2025-12-17 Yiwen Zhao , Jiatong Shi , Yuxun Tang , William Chen , Shinji Watanabe

In speech processing pipelines, improving the quality and intelligibility of real-world recordings is crucial. While supervised regression is the primary method for speech enhancement, audio tokenization is emerging as a promising…

Sound · Computer Science 2025-07-18 Luca Della Libera , Cem Subakan , Mirco Ravanelli

Most text-to-speech (TTS) methods use high-quality speech corpora recorded in a well-designed environment, incurring a high cost for data collection. To solve this problem, existing noise-robust TTS methods are intended to use noisy speech…

Sound · Computer Science 2022-06-30 Takaaki Saeki , Kentaro Tachibana , Ryuichi Yamamoto

Recently, zero-shot text-to-speech (TTS) systems, capable of synthesizing any speaker's voice from a short audio prompt, have made rapid advancements. However, the quality of the generated speech significantly deteriorates when the audio…

Audio and Speech Processing · Electrical Eng. & Systems 2024-06-11 Xiaofei Wang , Sefik Emre Eskimez , Manthan Thakker , Hemin Yang , Zirun Zhu , Min Tang , Yufei Xia , Jinzhu Li , Sheng Zhao , Jinyu Li , Naoyuki Kanda

While current emotional Text-to-Speech (TTS) models have successfully controlled verbal prosody, they often ignore non-verbal vocalizations (NVs), which are essential for authentic human emotion. Although some non-verbal datasets have…

Audio and Speech Processing · Electrical Eng. & Systems 2026-05-26 Wangzixi Zhou , Bagus Tris Atmaja , Sakriani Sakti

This paper explores the use of TTS synthesized training data for KWS (keyword spotting) task while minimizing development cost and time. Keyword spotting models require a huge amount of training data to be accurate, and obtaining such…

In this paper, we propose a differentiable WORLD synthesizer and demonstrate its use in end-to-end audio style transfer tasks such as (singing) voice conversion and the DDSP timbre transfer task. Accordingly, our baseline differentiable…

Audio and Speech Processing · Electrical Eng. & Systems 2023-05-09 Shahan Nercessian

Customizing voice and speaking style in a speech synthesis system with intuitive and fine-grained controls is challenging, given that little data with appropriate labels is available. Furthermore, editing an existing human's voice also…

Sound · Computer Science 2023-10-27 Florian Lux , Pascal Tilli , Sarina Meyer , Ngoc Thang Vu

Token-based text-to-speech (TTS) models have emerged as a promising avenue for generating natural and realistic speech, yet they grapple with low pronunciation accuracy, speaking style and timbre inconsistency, and a substantial need for…

Sound · Computer Science 2024-03-12 Chunhui Wang , Chang Zeng , Bowen Zhang , Ziyang Ma , Yefan Zhu , Zifeng Cai , Jian Zhao , Zhonglin Jiang , Yong Chen

Systems for synthesizer sound matching, which automatically set the parameters of a synthesizer to emulate an input sound, have the potential to make the process of synthesizer programming faster and easier for novice and experienced…

Audio and Speech Processing · Electrical Eng. & Systems 2024-07-24 Fred Bruford , Frederik Blang , Shahan Nercessian

Voice impersonation is not the same as voice transformation, although the latter is an essential element of it. In voice impersonation, the resultant voice must convincingly convey the impression of having been naturally produced by the…

Sound · Computer Science 2018-02-21 Yang Gao , Rita Singh , Bhiksha Raj

Generating sound effects with controllable variations is a challenging task, traditionally addressed using sophisticated physical models that require in-depth knowledge of signal processing parameters and algorithms. In the era of…

Sound · Computer Science 2024-12-30 Yunyi Liu , Craig Jin

Speech enhancement is a critical component of many user-oriented audio applications, yet current systems still suffer from distorted and unnatural outputs. While generative models have shown strong potential in speech synthesis, they are…

Audio and Speech Processing · Electrical Eng. & Systems 2022-02-11 Yen-Ju Lu , Zhong-Qiu Wang , Shinji Watanabe , Alexander Richard , Cheng Yu , Yu Tsao

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

Articulatory information has been shown to be effective in improving the performance of HMM-based and DNN-based text-to-speech synthesis. Speech synthesis research focuses traditionally on text-to-speech conversion, when the input is text…

Audio and Speech Processing · Electrical Eng. & Systems 2021-07-06 Tamás Gábor Csapó , László Tóth , Gábor Gosztolya , Alexandra Markó

Voice cloning is the task of learning to synthesize the voice of an unseen speaker from a few samples. While current voice cloning methods achieve promising results in Text-to-Speech (TTS) synthesis for a new voice, these approaches lack…

Sound · Computer Science 2021-02-02 Paarth Neekhara , Shehzeen Hussain , Shlomo Dubnov , Farinaz Koushanfar , Julian McAuley