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As the parameter size of large language models (LLMs) continues to expand, the need for a large memory footprint and high communication bandwidth have become significant bottlenecks for the training and inference of LLMs. To mitigate these…

Machine Learning · Computer Science 2024-07-02 Ceyu Xu , Yongji Wu , Xinyu Yang , Beidi Chen , Matthew Lentz , Danyang Zhuo , Lisa Wu Wills

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

Neural audio codecs (NACs) have garnered significant attention as key technologies for audio compression as well as audio representation for speech language models. While mainstream NAC models are predominantly convolution-based, the…

Audio and Speech Processing · Electrical Eng. & Systems 2025-04-29 Haibin Wu , Naoyuki Kanda , Sefik Emre Eskimez , Jinyu Li

Recent advances in speech-enabled language models have shown promising results in building intelligent voice assistants. However, most existing approaches rely on large-scale paired speech-text data and extensive computational resources,…

Computation and Language · Computer Science 2025-06-10 Taesoo Kim , Jong Hwan Ko

Text-to-speech (TTS) systems are an important component in voice-based e-commerce applications. These applications include end-to-end voice assistant and customer experience (CX) voice bot. Code-mixed TTS is also relevant in these…

Machine Learning · Computer Science 2023-12-05 Raviraj Joshi , Nikesh Garera

Universal audio codecs learn entangled representations across audio types, whereas some specific codecs offer decoupled representations but are limited to speech. Real-world audio, however, often contains mixed speech and background sounds,…

Sound · Computer Science 2025-09-12 Xiaoxue Luo , Jinwei Huang , Runyan Yang , Yingying Gao , Junlan Feng , Chao Deng , Shilei Zhang

The expressive quality of synthesized speech for audiobooks is limited by generalized model architecture and unbalanced style distribution in the training data. To address these issues, in this paper, we propose a self-supervised style…

Sound · Computer Science 2023-12-20 Xueyuan Chen , Xi Wang , Shaofei Zhang , Lei He , Zhiyong Wu , Xixin Wu , Helen Meng

Any-to-any singing voice conversion (SVC) is confronted with the challenge of ``timbre leakage'' issue caused by inadequate disentanglement between the content and the speaker timbre. To address this issue, this study introduces NeuCoSVC, a…

Sound · Computer Science 2024-01-09 Binzhu Sha , Xu Li , Zhiyong Wu , Ying Shan , Helen Meng

Speech language models (Speech LMs) enable end-to-end speech-text modeling within a single model, offering a promising direction for spoken dialogue systems. The choice of speech-text jointly decoding paradigm plays a critical role in…

Audio and Speech Processing · Electrical Eng. & Systems 2026-02-12 Haibin Wu , Yuxuan Hu , Ruchao Fan , Xiaofei Wang , Kenichi Kumatani , Bo Ren , Jianwei Yu , Heng Lu , Lijuan Wang , Yao Qian , Jinyu Li

Though significant progress has been made for speaker-dependent Video-to-Speech (VTS) synthesis, little attention is devoted to multi-speaker VTS that can map silent video to speech, while allowing flexible control of speaker identity, all…

Audio and Speech Processing · Electrical Eng. & Systems 2022-02-21 Disong Wang , Shan Yang , Dan Su , Xunying Liu , Dong Yu , Helen Meng

This article presents svds-C, an open-source and high-performance C program for accurately and robustly computing truncated SVD, e.g. computing several largest singular values and corresponding singular vectors. We have re-implemented the…

Mathematical Software · Computer Science 2024-05-30 Xu Feng , Wenjian Yu , Yuyang Xie

The language model (LM) approach based on acoustic and linguistic prompts, such as VALL-E, has achieved remarkable progress in the field of zero-shot audio generation. However, existing methods still have some limitations: 1) repetitions,…

Computation and Language · Computer Science 2024-01-17 Yakun Song , Zhuo Chen , Xiaofei Wang , Ziyang Ma , Xie Chen

The dominance of large decoder-only language models has overshadowed encoder-decoder architectures, despite their fundamental efficiency advantages in sequence processing. For small language models (SLMs) - those with 1 billion parameters…

Computation and Language · Computer Science 2025-01-31 Mohamed Elfeki , Rui Liu , Chad Voegele

Self-supervised learning (SSL) techniques have achieved remarkable results in various speech processing tasks. Nonetheless, a significant challenge remains in reducing the reliance on vast amounts of speech data for pre-training. This paper…

Audio and Speech Processing · Electrical Eng. & Systems 2024-06-05 Po-chun Hsu , Ali Elkahky , Wei-Ning Hsu , Yossi Adi , Tu Anh Nguyen , Jade Copet , Emmanuel Dupoux , Hung-yi Lee , Abdelrahman Mohamed

We present an unsupervised end-to-end training scheme where we discover discrete subword units from speech without using any labels. The discrete subword units are learned under an ASR-TTS autoencoder reconstruction setting, where an…

Computation and Language · Computer Science 2020-04-24 Andy T. Liu , Po-chun Hsu , Hung-yi Lee

Generative modeling has recently achieved remarkable success across text, image, and audio domains, demonstrating powerful capabilities for unified representation learning. However, audio generation models still face challenges in terms of…

Sound · Computer Science 2025-10-31 Chengwei Liu , Haoyin Yan , Shaofei Xue , Xiaotao Liang , Yinghao Liu , Zheng Xue , Gang Song , Boyang Zhou

Recently, end-to-end multi-speaker text-to-speech (TTS) systems gain success in the situation where a lot of high-quality speech plus their corresponding transcriptions are available. However, laborious paired data collection processes…

Audio and Speech Processing · Electrical Eng. & Systems 2020-08-05 Tao Tu , Yuan-Jui Chen , Alexander H. Liu , Hung-yi Lee

We propose a decoder-only language model, VoxtLM, that can perform four tasks: speech recognition, speech synthesis, text generation, and speech continuation. VoxtLM integrates text vocabulary with discrete speech tokens from…

Audio and Speech Processing · Electrical Eng. & Systems 2024-01-25 Soumi Maiti , Yifan Peng , Shukjae Choi , Jee-weon Jung , Xuankai Chang , Shinji Watanabe

The residual vector quantization (RVQ) technique plays a central role in recent advances in neural audio codecs. These models effectively synthesize high-fidelity audio from a limited number of codes due to the hierarchical structure among…

Audio and Speech Processing · Electrical Eng. & Systems 2025-09-24 Hyeongju Kim , Junhyeok Lee , Jacob Morton , Juheon Lee , Jinhyeok Yang

Large language models (LLMs) provide strong semantic priors that can improve multi-talker automatic speech recognition (MT-ASR), but using an LLM as an autoregressive decoder is computationally expensive and remains fragile under heavy…

Sound · Computer Science 2026-03-12 Hao Shi , Yusuke Fujita , Roman Koshkin , Mengjie Zhao , Yuan Gao , Lianbo Liu , Yui Sudo