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This paper presents a method of sequence-to-sequence (seq2seq) voice conversion using non-parallel training data. In this method, disentangled linguistic and speaker representations are extracted from acoustic features, and voice conversion…

Audio and Speech Processing · Electrical Eng. & Systems 2020-01-14 Jing-Xuan Zhang , Zhen-Hua Ling , Li-Rong Dai

This paper proposes a novel Sequence-to-Sequence (Seq2Seq) model integrating the structure of Hidden Semi-Markov Models (HSMMs) into its attention mechanism. In speech synthesis, it has been shown that methods based on Seq2Seq models using…

Audio and Speech Processing · Electrical Eng. & Systems 2021-09-01 Yoshihiko Nankaku , Kenta Sumiya , Takenori Yoshimura , Shinji Takaki , Kei Hashimoto , Keiichiro Oura , Keiichi Tokuda

Sequence-to-sequence learning with neural networks has become the de facto standard for sequence prediction tasks. This approach typically models the local distribution over the next word with a powerful neural network that can condition on…

Computation and Language · Computer Science 2021-11-17 Yoon Kim

Deep speaker embedding has achieved satisfactory performance in speaker verification. By enforcing the neural model to discriminate the speakers in the training set, deep speaker embedding (called `x-vectors`) can be derived from the hidden…

Audio and Speech Processing · Electrical Eng. & Systems 2019-08-28 Xueyi Wang , Lantian Li , Dong Wang

Recently, a generative variational autoencoder (VAE) has been proposed for speech enhancement to model speech statistics. However, this approach only uses clean speech in the training phase, making the estimation particularly sensitive to…

Audio and Speech Processing · Electrical Eng. & Systems 2021-05-18 Huajian Fang , Guillaume Carbajal , Stefan Wermter , Timo Gerkmann

Speech enhancement (SE) aims to reduce noise in speech signals. Most SE techniques focus only on addressing audio information. In this work, inspired by multimodal learning, which utilizes data from different modalities, and the recent…

Sound · Computer Science 2022-04-19 Jen-Cheng Hou , Syu-Siang Wang , Ying-Hui Lai , Yu Tsao , Hsiu-Wen Chang , Hsin-Min Wang

Speech enhancement (SE) aims to reduce noise in speech signals. Most SE techniques focus only on addressing audio information. In this work, inspired by multimodal learning, which utilizes data from different modalities, and the recent…

Sound · Computer Science 2018-01-25 Jen-Cheng Hou , Syu-Siang Wang , Ying-Hui Lai , Yu Tsao , Hsiu-Wen Chang , Hsin-Min Wang

A text-to-speech synthesis system typically consists of multiple stages, such as a text analysis frontend, an acoustic model and an audio synthesis module. Building these components often requires extensive domain expertise and may contain…

We introduce an approach to multilingual speech synthesis which uses the meta-learning concept of contextual parameter generation and produces natural-sounding multilingual speech using more languages and less training data than previous…

Audio and Speech Processing · Electrical Eng. & Systems 2020-08-04 Tomáš Nekvinda , Ondřej Dušek

We present SVCnet, a system for modelling speaker variability. Encoder Neural Networks specialized for each speech sound produce low dimensionality models of acoustical variation, and these models are further combined into an overall model…

Sound · Computer Science 2022-11-17 Michael Witbrock , Patrick Haffner

Despite the great promise of Transformers in many sequence modeling tasks (e.g., machine translation), their deterministic nature hinders them from generalizing to high entropy tasks such as dialogue response generation. Previous work…

Computation and Language · Computer Science 2020-03-31 Zhaojiang Lin , Genta Indra Winata , Peng Xu , Zihan Liu , Pascale Fung

Current text to speech (TTS) systems usually leverage a cascaded acoustic model and vocoder pipeline with mel-spectrograms as the intermediate representations, which suffer from two limitations: 1) the acoustic model and vocoder are…

Sound · Computer Science 2022-07-12 Yanqing Liu , Ruiqing Xue , Lei He , Xu Tan , Sheng Zhao

One of the obstacles in many-to-many voice conversion is the requirement of the parallel training data, which contain pairs of utterances with the same linguistic content spoken by different speakers. Since collecting such parallel data is…

Audio and Speech Processing · Electrical Eng. & Systems 2020-02-04 Keonnyeong Lee , In-Chul Yoo , Dongsuk Yook

We present Speech Vecalign, a parallel speech document alignment method that monotonically aligns speech segment embeddings and does not depend on text transcriptions. Compared to the baseline method Global Mining, a variant of speech…

Computation and Language · Computer Science 2025-09-24 Chutong Meng , Philipp Koehn

Introducing variability while maintaining coherence is a core task in learning to generate utterances in conversation. Standard neural encoder-decoder models and their extensions using conditional variational autoencoder often result in…

Computation and Language · Computer Science 2018-10-23 Hung Le , Truyen Tran , Thin Nguyen , Svetha Venkatesh

GAN-based neural vocoders, such as Parallel WaveGAN and MelGAN have attracted great interest due to their lightweight and parallel structures, enabling them to generate high fidelity waveform in a real-time manner. In this paper, inspired…

Sound · Computer Science 2021-03-30 Congyi Wang , Yu Chen , Bin Wang , Yi Shi

Recently, a variational autoencoder (VAE)-based single-channel speech enhancement system using Bayesian permutation training has been proposed, which uses two pretrained VAEs to obtain latent representations for speech and noise. Based on…

Audio and Speech Processing · Electrical Eng. & Systems 2026-02-03 Jiatong Li , Simon Doclo

We present a Split Vector Quantized Variational Autoencoder (SVQ-VAE) architecture using a split vector quantizer for NTTS, as an enhancement to the well-known Variational Autoencoder (VAE) and Vector Quantized Variational Autoencoder…

Sound · Computer Science 2023-09-15 Marek Strong , Jonas Rohnke , Antonio Bonafonte , Mateusz Łajszczak , Trevor Wood

This paper proposes a new model, called condition-transforming variational autoencoder (CTVAE), to improve the performance of conversation response generation using conditional variational autoencoders (CVAEs). In conventional CVAEs , the…

Computation and Language · Computer Science 2019-04-25 Yu-Ping Ruan , Zhen-Hua Ling , Quan Liu , Zhigang Chen , Nitin Indurkhya

We present MELLE, a novel continuous-valued token based language modeling approach for text-to-speech synthesis (TTS). MELLE autoregressively generates continuous mel-spectrogram frames directly from text condition, bypassing the need for…

Computation and Language · Computer Science 2025-05-28 Lingwei Meng , Long Zhou , Shujie Liu , Sanyuan Chen , Bing Han , Shujie Hu , Yanqing Liu , Jinyu Li , Sheng Zhao , Xixin Wu , Helen Meng , Furu Wei
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