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Recent works of utilizing phonetic posteriograms (PPGs) for non-parallel voice conversion have significantly increased the usability of voice conversion since the source and target DBs are no longer required for matching contents. In this…

Audio and Speech Processing · Electrical Eng. & Systems 2020-06-15 Sunghee Jung , Youngjoo Suh , Yeunju Choi , Hoirin Kim

As a foundational technology for intelligent human-computer interaction, voice conversion (VC) seeks to transform speech from any source timbre into any target timbre. Traditional voice conversion methods based on Generative Adversarial…

Sound · Computer Science 2025-06-11 Wenhan Yao , Fen Xiao , Xiarun Chen , Jia Liu , YongQiang He , Weiping Wen

Zero-shot voice conversion (VC) aims to convert a source utterance into the voice of an unseen target speaker while preserving its linguistic content. Although recent systems have improved conversion quality, building zero-shot VC systems…

Audio and Speech Processing · Electrical Eng. & Systems 2026-04-23 Qixi Zheng , Yuxiang Zhao , Tianrui Wang , Wenxi Chen , Kele Xu , Yikang Li , Qinyuan Chen , Xipeng Qiu , Kai Yu , Xie Chen

The goal of voice conversion is to transform the speech of a source speaker to sound like that of a reference speaker while preserving the original content. A key challenge is to extract disentangled linguistic content from the source and…

Sound · Computer Science 2025-01-15 Jaehun Kim , Ji-Hoon Kim , Yeunju Choi , Tan Dat Nguyen , Seongkyu Mun , Joon Son Chung

In this work, we propose a zero-shot voice conversion method using speech representations trained with self-supervised learning. First, we develop a multi-task model to decompose a speech utterance into features such as linguistic content,…

Sound · Computer Science 2023-02-17 Shehzeen Hussain , Paarth Neekhara , Jocelyn Huang , Jason Li , Boris Ginsburg

The goal of voice conversion (VC) is to convert input voice to match the target speaker's voice while keeping text and prosody intact. VC is usually used in entertainment and speaking-aid systems, as well as applied for speech data…

Sound · Computer Science 2022-04-01 A. Kashkin , I. Karpukhin , S. Shishkin

In this paper we propose a new cross-lingual Voice Conversion (VC) approach which can generate all speech parameters (MCEP, LF0, BAP) from one DNN model using PPGs (Phonetic PosteriorGrams) extracted from inputted speech using several ASR…

Audio and Speech Processing · Electrical Eng. & Systems 2020-12-29 Qinghua Sun , Kenji Nagamatsu

Voice Conversion (VC) aims to modify a speaker's timbre while preserving linguistic content. While recent VC models achieve strong performance, most struggle in real-time streaming scenarios due to high latency, dependence on ASR modules,…

Sound · Computer Science 2025-10-13 Zhao Guo , Ziqian Ning , Guobin Ma , Lei Xie

Previously, we introduced VoiceGrad, a nonparallel voice conversion (VC) technique enabling mel-spectrogram conversion from source to target speakers using a score-based diffusion model. The concept involves training a score network to…

Sound · Computer Science 2025-09-11 Hirokazu Kameoka , Takuhiro Kaneko , Kou Tanaka , Yuto Kondo

Traditional voice conversion methods rely on parallel recordings of multiple speakers pronouncing the same sentences. For real-world applications however, parallel data is rarely available. We propose MelGAN-VC, a voice conversion method…

Audio and Speech Processing · Electrical Eng. & Systems 2019-12-06 Marco Pasini

This paper presents a novel task, zero-shot voice conversion based on face images (zero-shot FaceVC), which aims at converting the voice characteristics of an utterance from any source speaker to a newly coming target speaker, solely…

Sound · Computer Science 2023-09-19 Zheng-Yan Sheng , Yang Ai , Yan-Nian Chen , Zhen-Hua Ling

Voice conversion (VC) could be used to improve speech recognition systems in low-resource languages by using it to augment limited training data. However, VC has not been widely used for this purpose because of practical issues such as…

Audio and Speech Processing · Electrical Eng. & Systems 2022-06-22 Matthew Baas , Herman Kamper

This paper proposes a method that allows non-parallel many-to-many voice conversion (VC) by using a variant of a generative adversarial network (GAN) called StarGAN. Our method, which we call StarGAN-VC, is noteworthy in that it (1)…

Sound · Computer Science 2018-07-02 Hirokazu Kameoka , Takuhiro Kaneko , Kou Tanaka , Nobukatsu Hojo

We present the Voice Conversion Challenge 2018, designed as a follow up to the 2016 edition with the aim of providing a common framework for evaluating and comparing different state-of-the-art voice conversion (VC) systems. The objective of…

Audio and Speech Processing · Electrical Eng. & Systems 2018-04-13 Jaime Lorenzo-Trueba , Junichi Yamagishi , Tomoki Toda , Daisuke Saito , Fernando Villavicencio , Tomi Kinnunen , Zhenhua Ling

In a typical voice conversion system, vocoder is commonly used for speech-to-features analysis and features-to-speech synthesis. However, vocoder can be a source of speech quality degradation. This paper presents a vocoder-free voice…

Audio and Speech Processing · Electrical Eng. & Systems 2019-09-18 Xiaohai Tian , Eng Siong Chng , Haizhou Li

Voice Conversion research in recent times has increasingly focused on improving the zero-shot capabilities of existing methods. Despite remarkable advancements, current architectures still tend to struggle in zero-shot cross-lingual…

Sound · Computer Science 2025-05-26 Advait Joglekar , Divyanshu Singh , Rooshil Rohit Bhatia , S. Umesh

This paper proposes a novel voice conversion (VC) method based on non-autoregressive sequence-to-sequence (NAR-S2S) models. Inspired by the great success of NAR-S2S models such as FastSpeech in text-to-speech (TTS), we extend the…

Sound · Computer Science 2021-04-15 Tomoki Hayashi , Wen-Chin Huang , Kazuhiro Kobayashi , Tomoki Toda

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

This paper proposes a voice conversion (VC) method using sequence-to-sequence (seq2seq or S2S) learning, which flexibly converts not only the voice characteristics but also the pitch contour and duration of input speech. The proposed…

Sound · Computer Science 2020-10-08 Hirokazu Kameoka , Kou Tanaka , Damian Kwasny , Takuhiro Kaneko , Nobukatsu Hojo

Voice conversion is the task of converting a spoken utterance from a source speaker so that it appears to be said by a different target speaker while retaining the linguistic content of the utterance. Recent advances have led to major…

Audio and Speech Processing · Electrical Eng. & Systems 2021-06-02 Matthew Baas , Herman Kamper