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Audio-Visual Speech Recognition (AVSR) achieves robust speech recognition in noisy environments by combining auditory and visual information. However, recent Large Language Model (LLM) based AVSR systems incur high computational costs due…

Computer Vision and Pattern Recognition · Computer Science 2025-06-06 Jeong Hun Yeo , Hyeongseop Rha , Se Jin Park , Yong Man Ro

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 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

While existing speech audio codecs designed for compression exploit limited forms of temporal redundancy and allow for multi-scale representations, they tend to represent all features of audio in the same way. In contrast, generative voice…

Sound · Computer Science 2025-09-22 Ryan Collette , Ross Greenwood , Serena Nicoll

Collecting speech data is an important step in training speech recognition systems and other speech-based machine learning models. However, the issue of privacy protection is an increasing concern that must be addressed. The current study…

The purpose of speech tokenization is to transform a speech signal into a sequence of discrete representations, serving as the foundation for speech language models (SLMs). While speech tokenization has many options, their effect on the…

Computation and Language · Computer Science 2025-06-03 Shunsuke Kando , Yusuke Miyao , Shinnosuke Takamichi

A good audio codec for live applications such as telecommunication is characterized by three key properties: (1) compression, i.e.\ the bitrate that is required to transmit the signal should be as low as possible; (2) latency, i.e.\…

Audio and Speech Processing · Electrical Eng. & Systems 2023-05-29 Yi-Chiao Wu , Israel D. Gebru , Dejan Marković , Alexander Richard

While language models (LMs) paired with residual vector quantization (RVQ) tokenizers have shown promise in text-to-audio (T2A) generation, they still lag behind diffusion-based models by a non-trivial margin. We identify a critical dilemma…

Sound · Computer Science 2025-10-07 Juncheng Wang , Chao Xu , Cheng Yu , Zhe Hu , Haoyu Xie , Guoqi Yu , Lei Shang , Shujun Wang

This paper introduces DashengTokenizer, a continuous audio tokenizer engineered for joint use in both understanding and generation tasks. Unlike conventional approaches, which train acoustic tokenizers and subsequently integrate frozen…

With the emergence of neural audio codecs, which encode multiple streams of discrete tokens from audio, large language models have recently gained attention as a promising approach for zero-shot Text-to-Speech (TTS) synthesis. Despite the…

Audio and Speech Processing · Electrical Eng. & Systems 2024-04-04 Jaehyeon Kim , Keon Lee , Seungjun Chung , Jaewoong Cho

In this report, we present the Qwen3-TTS series, a family of advanced multilingual, controllable, robust, and streaming text-to-speech models. Qwen3-TTS supports state-of-the-art 3-second voice cloning and description-based control,…

We introduce a state-of-the-art real-time, high-fidelity, audio codec leveraging neural networks. It consists in a streaming encoder-decoder architecture with quantized latent space trained in an end-to-end fashion. We simplify and speed-up…

Audio and Speech Processing · Electrical Eng. & Systems 2022-10-25 Alexandre Défossez , Jade Copet , Gabriel Synnaeve , Yossi Adi

Efficiently representing audio signals in a compressed latent space is critical for latent generative modelling. However, existing autoencoders often force a choice between continuous embeddings and discrete tokens. Furthermore, achieving…

Sound · Computer Science 2025-09-15 Marco Pasini , Stefan Lattner , George Fazekas

Deep learning has become a de facto method of choice for speech enhancement tasks with significant improvements in speech quality. However, real-time processing with reduced size and computations for low-power edge devices drastically…

Audio and Speech Processing · Electrical Eng. & Systems 2024-05-28 Monisankha Pal , Arvind Ramanathan , Ted Wada , Ashutosh Pandey

Audio and speech coding lack unified evaluation and open-source testing. Many candidate systems were evaluated on proprietary, non-reproducible, or small data, and machine learning-based codecs are often tested on datasets with similar…

Audio and Speech Processing · Electrical Eng. & Systems 2025-08-04 Jozef Coldenhoff , Niclas Granqvist , Milos Cernak

Synthesizing realistic co-speech gestures is an important and yet unsolved problem for creating believable motions that can drive a humanoid robot to interact and communicate with human users. Such capability will improve the impressions of…

Computer Vision and Pattern Recognition · Computer Science 2023-03-24 Shuhong Lu , Youngwoo Yoon , Andrew Feng

Unsupervised representation learning of speech has been of keen interest in recent years, which is for example evident in the wide interest of the ZeroSpeech challenges. This work presents a new method for learning frame level…

Audio and Speech Processing · Electrical Eng. & Systems 2020-08-18 Mingjie Chen , Thomas Hain

This technical report presents MOSS-TTS, a speech generation foundation model built on a scalable recipe: discrete audio tokens, autoregressive modeling, and large-scale pretraining. Built on MOSS-Audio-Tokenizer, a causal Transformer…

Modern speech systems increasingly use discretized self-supervised speech representations for compression and integration with token-based models, yet their impact on emotional information remains unclear. We study how residual vector…

Sound · Computer Science 2026-03-24 Haoguang Zhou , Siyi Wang , Jingyao Wu , James Bailey , Ting Dang

The multi-codebook speech codec enables the application of large language models (LLM) in TTS but bottlenecks efficiency and robustness due to multi-sequence prediction. To avoid this obstacle, we propose Single-Codec, a single-codebook…

Audio and Speech Processing · Electrical Eng. & Systems 2024-06-12 Hanzhao Li , Liumeng Xue , Haohan Guo , Xinfa Zhu , Yuanjun Lv , Lei Xie , Yunlin Chen , Hao Yin , Zhifei Li