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In neural-based audio feature extraction, ensuring that representations capture disentangled information is crucial for model interpretability. However, existing disentanglement methods often rely on assumptions that are highly dependent on…

Sound · Computer Science 2025-10-07 Benoit Ginies , Xiaoyu Bie , Olivier Fercoq , Gaël Richard

Any-to-any voice conversion problem aims to convert voices for source and target speakers, which are out of the training data. Previous works wildly utilize the disentangle-based models. The disentangle-based model assumes the speech…

Sound · Computer Science 2022-02-23 Qiqi Wang , Xulong Zhang , Jianzong Wang , Ning Cheng , Jing Xiao

Voice Conversion (VC) converts the voice of a source speech to that of a target while maintaining the source's content. Speech can be mainly decomposed into four components: content, timbre, rhythm and pitch. Unfortunately, most related…

Sound · Computer Science 2023-06-22 Zhonghua Liu , Shijun Wang , Ning Chen

Voice conversion (VC) aims to modify the speaker's identity while preserving the linguistic content. Commonly, VC methods use an encoder-decoder architecture, where disentangling the speaker's identity from linguistic information is…

Audio and Speech Processing · Electrical Eng. & Systems 2024-09-19 Philip H. Lee , Ismail Rasim Ulgen , Berrak Sisman

Neural audio codecs (NACs) achieve low-bitrate compression by learning compact audio representations, which can also serve as features for perceptual quality evaluation. We introduce DACe, an enhanced, higher-fidelity version of the…

Audio and Speech Processing · Electrical Eng. & Systems 2026-01-23 Arijit Biswas , Lars Villemoes

The advent of neural audio codecs has increased in popularity due to their potential for efficiently modeling audio with transformers. Such advanced codecs represent audio from a highly continuous waveform to low-sampled discrete units. In…

Audio and Speech Processing · Electrical Eng. & Systems 2025-09-19 Samir Sadok , Julien Hauret , Éric Bavu

Neural speech codecs aim to compress input signals into minimal bits while maintaining content quality in a low-latency manner. However, existing neural codecs often trade model complexity for reconstruction performance. These codecs…

Sound · Computer Science 2024-10-04 Yuzhe Gu , Enmao Diao

Voice conversion (VC) consists of digitally altering the voice of an individual to manipulate part of its content, primarily its identity, while maintaining the rest unchanged. Research in neural VC has accomplished considerable…

Sound · Computer Science 2021-07-28 Laurent Benaroya , Nicolas Obin , Axel Roebel

We present a method to separate speech signals from noisy environments in the embedding space of a neural audio codec. We introduce a new training procedure that allows our model to produce structured encodings of audio waveforms given by…

Neural speech codecs have demonstrated their ability to compress high-quality speech and audio by converting them into discrete token representations. Most existing methods utilize Residual Vector Quantization (RVQ) to encode speech into…

Sound · Computer Science 2024-10-22 Peiji Yang , Fengping Wang , Yicheng Zhong , Huawei Wei , Zhisheng Wang

Neural audio codec (NAC) is essential for reconstructing high-quality speech signals and generating discrete representations for downstream speech language models. However, ensuring accurate semantic modeling while maintaining high-fidelity…

Audio and Speech Processing · Electrical Eng. & Systems 2026-03-03 Yanzhou Ren , Noboru Harada , Daiki Takeuchi , Siyu Chen , Wei Liu , Xiao Zhang , Liyuan Zhang , Takehiro Moriya , Shoji Makino

Neural audio codecs discretize speech via residual vector quantization (RVQ), forming a coarse-to-fine hierarchy across quantizers. While codec models have been explored for representation learning, their discrete structure remains…

Sound · Computer Science 2026-03-19 Jinyang Wu , Zihan Pan , Qiquan Zhang , Sailor Hardik Bhupendra , Soumik Mondal

Audio denoising is critical in signal processing, enhancing intelligibility and fidelity for applications like restoring musical recordings. This paper presents a proof-of-concept for adapting a state-of-the-art neural audio codec, the…

Sound · Computer Science 2025-11-04 Daniel Jimon , Mircea Vaida , Adriana Stan

Recent advancements in neural audio codecs have not only enabled superior audio compression but also enhanced speech synthesis techniques. Researchers are now exploring their potential as universal acoustic feature extractors for a broader…

Audio and Speech Processing · Electrical Eng. & Systems 2025-11-21 Wei-Cheng Tseng , David Harwath

Neural Audio Codecs (NACs) can reduce transmission overhead by performing compact compression and reconstruction, which also aim to bridge the gap between continuous and discrete signals. Existing NACs can be divided into two categories:…

Sound · Computer Science 2026-01-07 Zhisheng Zhang , Xiang Li , Yixuan Zhou , Jing Peng , Shengbo Cai , Guoyang Zeng , Zhiyong Wu

The use of audio recordings of human speech to train LLMs poses privacy concerns due to these models' potential to generate outputs that closely resemble artifacts in the training data. In this study, we propose a speaker privacy-preserving…

Disentangling speaker and content attributes of a speech signal into separate latent representations followed by decoding the content with an exchanged speaker representation is a popular approach for voice conversion, which can be trained…

Audio and Speech Processing · Electrical Eng. & Systems 2022-09-07 Michael Kuhlmann , Fritz Seebauer , Janek Ebbers , Petra Wagner , Reinhold Haeb-Umbach

This paper investigates three crucial yet underexplored aspects of the generalization capabilities of neural audio codecs (NACs): (i) whether NACs can generalize to unseen languages during pre-training, (ii) whether speech-only pre-trained…

Sound · Computer Science 2026-01-21 Shih-Heng Wang , Jiatong Shi , Jinchuan Tian , Haibin Wu , Shinji Watanabe

Voice conversion (VC) is a task that transforms the source speaker's timbre, accent, and tones in audio into another one's while preserving the linguistic content. It is still a challenging work, especially in a one-shot setting.…

Audio and Speech Processing · Electrical Eng. & Systems 2020-06-09 Da-Yi Wu , Yen-Hao Chen , Hung-Yi Lee

Neural audio codecs are initially introduced to compress audio data into compact codes to reduce transmission latency. Researchers recently discovered the potential of codecs as suitable tokenizers for converting continuous audio into…

Audio and Speech Processing · Electrical Eng. & Systems 2024-02-21 Haibin Wu , Xuanjun Chen , Yi-Cheng Lin , Kai-wei Chang , Ho-Lam Chung , Alexander H. Liu , Hung-yi Lee