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In voice conversion (VC) applications, diffusion and flow-matching models have exhibited exceptional speech quality and speaker similarity performances. However, they are limited by slow conversion owing to their iterative inference.…

Sound · Computer Science 2026-02-23 Takuhiro Kaneko , Hirokazu Kameoka , Kou Tanaka , Yuto Kondo

Recent research has demonstrated that Feed-Forward Networks (FFNs) in Large Language Models (LLMs) play a pivotal role in storing diverse linguistic and factual knowledge. Conventional methods frequently face challenges due to knowledge…

Computation and Language · Computer Science 2024-08-23 Zhongyu Zhao , Menghang Dong , Rongyu Zhang , Wenzhao Zheng , Yunpeng Zhang , Huanrui Yang , Dalong Du , Kurt Keutzer , Shanghang Zhang

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

Non-parallel voice conversion (VC) is typically achieved using lossy representations of the source speech. However, ensuring only speaker identity information is dropped whilst all other information from the source speech is retained is a…

Audio and Speech Processing · Electrical Eng. & Systems 2022-03-16 Thomas Merritt , Abdelhamid Ezzerg , Piotr Biliński , Magdalena Proszewska , Kamil Pokora , Roberto Barra-Chicote , Daniel Korzekwa

Non-parallel voice conversion (VC) is a technique for training voice converters without a parallel corpus. Cycle-consistent adversarial network-based VCs (CycleGAN-VC and CycleGAN-VC2) are widely accepted as benchmark methods. However,…

Sound · Computer Science 2021-02-26 Takuhiro Kaneko , Hirokazu Kameoka , Kou Tanaka , Nobukatsu Hojo

The internal language model (ILM) of the neural transducer has been widely studied. In most prior work, it is mainly used for estimating the ILM score and is subsequently subtracted during inference to facilitate improved integration with…

Audio and Speech Processing · Electrical Eng. & Systems 2024-04-03 Jinxi Guo , Niko Moritz , Yingyi Ma , Frank Seide , Chunyang Wu , Jay Mahadeokar , Ozlem Kalinli , Christian Fuegen , Mike Seltzer

Large language models (LLMs) based on Transformer Decoders have become the preferred choice for conversational generative AI. Despite the overall superiority of the Decoder architecture, the gradually increasing Key-Value (KV) cache during…

Computation and Language · Computer Science 2025-07-16 Luohe Shi , Zuchao Li , Lefei Zhang , Guoming Liu , Baoyuan Qi , Hai Zhao

Typically, voice conversion is regarded as an engineering problem with limited training data. The reliance on massive amounts of data hinders the practical applicability of deep learning approaches, which have been extensively researched in…

Sound · Computer Science 2023-09-11 Mohamadreza Jafaryani , Hamid Sheikhzadeh , Vahid Pourahmadi

Non-negative Matrix Factorization (NMF) is a powerful technique for analyzing regularly-sampled data, i.e., data that can be stored in a matrix. For audio, this has led to numerous applications using time-frequency (TF) representations like…

Audio and Speech Processing · Electrical Eng. & Systems 2025-07-10 Krishna Subramani , Paris Smaragdis , Takuya Higuchi , Mehrez Souden

While LLMs are powerful embedding backbones, their application in training-free settings faces two structural challenges: causal attention restricts early tokens from accessing subsequent context, and the next-token prediction objective…

Computation and Language · Computer Science 2026-01-06 Yixuan Tang , Yi Yang

Recent developments in neural speech synthesis and vocoding have sparked a renewed interest in voice conversion (VC). Beyond timbre transfer, achieving controllability on para-linguistic parameters such as pitch and Speed is critical in…

Audio and Speech Processing · Electrical Eng. & Systems 2025-04-16 Meiying Chen , Zhiyao Duan

We propose SelfVC, a training strategy to iteratively improve a voice conversion model with self-synthesized examples. Previous efforts on voice conversion focus on factorizing speech into explicitly disentangled representations that…

Neural transducer is now the most popular end-to-end model for speech recognition, due to its naturally streaming ability. However, it is challenging to adapt it with text-only data. Factorized neural transducer (FNT) model was proposed to…

Computation and Language · Computer Science 2023-02-24 Rui Zhao , Jian Xue , Partha Parthasarathy , Veljko Miljanic , Jinyu Li

End-to-end multilingual speech recognition involves using a single model training on a compositional speech corpus including many languages, resulting in a single neural network to handle transcribing different languages. Due to the fact…

Computation and Language · Computer Science 2021-05-10 Ngoc-Quan Pham , Tuan-Nam Nguyen , Sebastian Stueker , Alexander Waibel

Voice conversion refers to transferring speaker identity with well-preserved content. Better disentanglement of speech representations leads to better voice conversion. Recent studies have found that phonetic information from input audio…

Sound · Computer Science 2024-01-19 Yimin Deng , Huaizhen Tang , Xulong Zhang , Ning Cheng , Jing Xiao , Jianzong Wang

The quadratic complexity of Multimodal Large Language Models (MLLMs) with respect to context length poses significant computational and memory challenges, hindering their real-world deployment. In the paper, we devise a…

Computer Vision and Pattern Recognition · Computer Science 2025-11-18 Yuhang Han , Xuyang Liu , Zihan Zhang , Pengxiang Ding , Junjie Chen , Donglin Wang , Honggang Chen , Qingsen Yan , Siteng Huang

In this paper, we propose computationally efficient and high-quality methods for statistical voice conversion (VC) with direct waveform modification based on spectral differentials. The conventional method with a minimum-phase filter…

Sound · Computer Science 2020-02-18 Takaaki Saeki , Yuki Saito , Shinnosuke Takamichi , Hiroshi Saruwatari

k-Nearest-Neighbor Machine Translation (kNN-MT) has been recently proposed as a non-parametric solution for domain adaptation in neural machine translation (NMT). It aims to alleviate the performance degradation of advanced MT systems in…

Computation and Language · Computer Science 2022-05-04 Dexin Wang , Kai Fan , Boxing Chen , Deyi Xiong

Voice conversion for highly expressive speech is challenging. Current approaches struggle with the balancing between speaker similarity, intelligibility and expressiveness. To address this problem, we propose Expressive-VC, a novel…

Audio and Speech Processing · Electrical Eng. & Systems 2022-11-10 Ziqian Ning , Qicong Xie , Pengcheng Zhu , Zhichao Wang , Liumeng Xue , Jixun Yao , Lei Xie , Mengxiao Bi

In this work, we present the Textless Vision-Language Transformer (TVLT), where homogeneous transformer blocks take raw visual and audio inputs for vision-and-language representation learning with minimal modality-specific design, and do…

Computer Vision and Pattern Recognition · Computer Science 2022-11-03 Zineng Tang , Jaemin Cho , Yixin Nie , Mohit Bansal