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Recent advances in generative language modeling applied to discrete speech tokens presented a new avenue for text-to-speech (TTS) synthesis. These speech language models (SLMs), similarly to their textual counterparts, are scalable,…

Audio and Speech Processing · Electrical Eng. & Systems 2024-05-17 Siyang Wang , Éva Székely

In order to efficiently transmit and store speech signals, speech codecs create a minimally redundant representation of the input signal which is then decoded at the receiver with the best possible perceptual quality. In this work we…

Zero-shot text-to-speech (TTS) synthesis aims to clone any unseen speaker's voice without adaptation parameters. By quantizing speech waveform into discrete acoustic tokens and modeling these tokens with the language model, recent language…

Speech coding facilitates the transmission of speech over low-bandwidth networks with minimal distortion. Neural-network based speech codecs have recently demonstrated significant improvements in quality over traditional approaches. While…

Sound · Computer Science 2022-07-07 Ali Siahkoohi , Michael Chinen , Tom Denton , W. Bastiaan Kleijn , Jan Skoglund

Recent advancements in end-to-end neural speech codecs enable compressing audio at extremely low bitrates while maintaining high-fidelity reconstruction. Meanwhile, low computational complexity and low latency are crucial for real-time…

Audio and Speech Processing · Electrical Eng. & Systems 2026-01-21 Leyan Yang , Ronghui Hu , Yang Xu , Jing Lu

Large Language Models (LLMs) have significantly advanced audio processing by leveraging audio codecs to discretize audio into tokens, enabling the application of language modeling techniques to speech data. However, existing audio codecs…

Audio and Speech Processing · Electrical Eng. & Systems 2025-08-11 Edresson Casanova , Paarth Neekhara , Ryan Langman , Shehzeen Hussain , Subhankar Ghosh , Xuesong Yang , Ante Jukić , Jason Li , Boris Ginsburg

Large Language Model (LLM) based text-to-speech (TTS) systems have demonstrated remarkable capabilities in handling large speech datasets and generating natural speech for new speakers. However, LLM-based TTS models are not robust as the…

Deep-learning based methods have shown their advantages in audio coding over traditional ones but limited attention has been paid on real-time communications (RTC). This paper proposes the TFNet, an end-to-end neural speech codec with low…

Sound · Computer Science 2022-02-16 Xue Jiang , Xiulian Peng , Chengyu Zheng , Huaying Xue , Yuan Zhang , Yan Lu

We propose a fully convolutional sequence-to-sequence encoder architecture with a simple and efficient decoder. Our model improves WER on LibriSpeech while being an order of magnitude more efficient than a strong RNN baseline. Key to our…

Computation and Language · Computer Science 2019-04-05 Awni Hannun , Ann Lee , Qiantong Xu , Ronan Collobert

We propose a new model architecture specifically suited for text-to-speech (TTS) models. We combine WavLM, a pre-trained self-supervised learning (SSL) speech model, and the BEST-RQ vector quantization framework. We assess the extent to…

Sound · Computer Science 2023-12-12 Via Nielson , Steven Hillis

Neural speech codecs have recently emerged as a focal point in the fields of speech compression and generation. Despite this progress, achieving high-quality speech reconstruction under low-bitrate scenarios remains a significant challenge.…

Sound · Computer Science 2024-11-22 Yu Pan , Xiang Zhang , Yuguang Yang , Jixun Yao , Yanni Hu , Jianhao Ye , Hongbin Zhou , Lei Ma , Jianjun Zhao

Autoregressive decoding in large language models (LLMs) requires caching a growing list of past key-value (KV) pairs, making long-context inference a memory-bound problem. While recent methods have explored quantizing the cache, evicting…

Computation and Language · Computer Science 2025-10-08 Harshil Vejendla

Recently, sequence-to-sequence (seq-to-seq) models have been successfully applied in text-to-speech (TTS) to synthesize speech for single-language text. To synthesize speech for multiple languages usually requires multi-lingual speech from…

Sound · Computer Science 2022-11-18 Haitong Zhang , Yue Lin

Recently, there has been a growing interest in text-to-speech (TTS) methods that can be trained with minimal supervision by combining two types of discrete speech representations and using two sequence-to-sequence tasks to decouple TTS.…

Sound · Computer Science 2023-12-19 Chunyu Qiang , Hao Li , Hao Ni , He Qu , Ruibo Fu , Tao Wang , Longbiao Wang , Jianwu Dang

To drive progress in science and engineering, large language models (LLMs) must be able to process large amounts of numerical data and solve long calculations efficiently. This is currently only possible through the use of external tools or…

Machine Learning · Computer Science 2026-05-21 Linus Kreitner , Paul Hager , Jonathan Mengedoht , Georgios Kaissis , Daniel Rueckert , Martin J. Menten

Recent advances in speech language models (LLMs) have extended textual LLMs to the speech domain, but balancing speech understanding and generation remains challenging, especially with codec-based representations. We propose a continual…

Audio and Speech Processing · Electrical Eng. & Systems 2025-12-01 Jiatong Shi , Chunlei Zhang , Jinchuan Tian , Junrui Ni , Hao Zhang , Shinji Watanabe , Dong Yu

Vocoders received renewed attention as main components in statistical parametric text-to-speech (TTS) synthesis and speech transformation systems. Even though there are vocoding techniques give almost accepted synthesized speech, their high…

Sound · Computer Science 2021-06-22 Mohammed Salah Al-Radhi , Tamás Gábor Csapó , Géza Németh

Diffusion speech enhancement on discrete audio codec features gain immense attention due to their improved speech component reconstruction capability. However, they usually suffer from high inference computational complexity due to multiple…

Audio and Speech Processing · Electrical Eng. & Systems 2026-01-30 Yihui Fu , Tim Fingscheidt

Neural codec language models achieve impressive zero-shot Text-to-Speech (TTS) by fully imitating the acoustic characteristics of a short speech prompt, including timbre, prosody, and paralinguistic information. However, such holistic…

Sound · Computer Science 2026-01-21 Hanchen Pei , Shujie Liu , Yanqing Liu , Jianwei Yu , Yuanhang Qian , Gongping Huang , Sheng Zhao , Yan Lu

With the help of discrete neural audio codecs, large language models (LLM) have increasingly been recognized as a promising methodology for zero-shot Text-to-Speech (TTS) synthesis. However, sampling based decoding strategies bring…

Computation and Language · Computer Science 2024-06-13 Bing Han , Long Zhou , Shujie Liu , Sanyuan Chen , Lingwei Meng , Yanming Qian , Yanqing Liu , Sheng Zhao , Jinyu Li , Furu Wei