activity
20182025
most citedCreating New Voices using Normalizing Flows

10 citations · 31 across the 20 of their papers we have counts for

collaborators

24 papers

eess.AS2025★ 1 cited

Universal Semantic Disentangled Privacy-preserving Speech Representation Learning

Biel Tura Vecino, Subhadeep Maji, Aravind Varier +11

The use of audio recordings of human speech to train LLMs poses privacy concerns due to these models' potential to generate outputs that closely resemble artifacts in the training…

eess.AS2025

Investigating self-supervised features for expressive, multilingual voice conversion

Álvaro Martín-Cortinas, Daniel Sáez-Trigueros, Grzegorz Beringer +7

Voice conversion (VC) systems are widely used for several applications, from speaker anonymisation to personalised speech synthesis. Supervised approaches learn a mapping between d…

eess.AS2024★ 1 cited

Enhancing the Stability of LLM-based Speech Generation Systems through Self-Supervised Representations

Álvaro Martín-Cortinas, Daniel Sáez-Trigueros, Iván Vallés-Pérez +6

Large Language Models (LLMs) are one of the most promising technologies for the next era of speech generation systems, due to their scalability and in-context learning capabilities…

cs.SD2023★ 10 cited

Creating New Voices using Normalizing Flows

Piotr Bilinski, Thomas Merritt, Abdelhamid Ezzerg +5

Creating realistic and natural-sounding synthetic speech remains a big challenge for voice identities unseen during training. As there is growing interest in synthesizing voices of…

eess.AS2023

Comparing normalizing flows and diffusion models for prosody and acoustic modelling in text-to-speech

Guangyan Zhang, Thomas Merritt, Manuel Sam Ribeiro +10

Neural text-to-speech systems are often optimized on L1/L2 losses, which make strong assumptions about the distributions of the target data space. Aiming to improve those assumptio…

cs.SD2023★ 1 cited

SCRAPS: Speech Contrastive Representations of Acoustic and Phonetic Spaces

Ivan Vallés-Pérez, Grzegorz Beringer, Piotr Bilinski +2

Numerous examples in the literature proved that deep learning models have the ability to work well with multimodal data. Recently, CLIP has enabled deep learning systems to learn s…

eess.AS2022

Remap, warp and attend: Non-parallel many-to-many accent conversion with Normalizing Flows

Abdelhamid Ezzerg, Thomas Merritt, Kayoko Yanagisawa +6

Regional accents of the same language affect not only how words are pronounced (i.e., phonetic content), but also impact prosodic aspects of speech such as speaking rate and intona…

cs.CL2022★ 2 cited

Stutter-TTS: Controlled Synthesis and Improved Recognition of Stuttered Speech

Xin Zhang, Iván Vallés-Pérez, Andreas Stolcke +5

Stuttering is a speech disorder where the natural flow of speech is interrupted by blocks, repetitions or prolongations of syllables, words and phrases. The majority of existing au…

eess.AS2022

GlowVC: Mel-spectrogram space disentangling model for language-independent text-free voice conversion

Magdalena Proszewska, Grzegorz Beringer, Daniel Sáez-Trigueros +3

In this paper, we propose GlowVC: a multilingual multi-speaker flow-based model for language-independent text-free voice conversion. We build on Glow-TTS, which provides an archite…

cs.CL2022★ 1 cited

Prosodic Alignment for off-screen automatic dubbing

Yogesh Virkar, Marcello Federico, Robert Enyedi +1

The goal of automatic dubbing is to perform speech-to-speech translation while achieving audiovisual coherence. This entails isochrony, i.e., translating the original speech by als…

eess.AS2022★ 2 cited

Text-free non-parallel many-to-many voice conversion using normalising flows

Thomas Merritt, Abdelhamid Ezzerg, Piotr Biliński +4

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…

eess.AS2022

Voice Filter: Few-shot text-to-speech speaker adaptation using voice conversion as a post-processing module

Adam Gabryś, Goeric Huybrechts, Manuel Sam Ribeiro +6

State-of-the-art text-to-speech (TTS) systems require several hours of recorded speech data to generate high-quality synthetic speech. When using reduced amounts of training data,…

eess.AS2021

Improving the expressiveness of neural vocoding with non-affine Normalizing Flows

Adam Gabryś, Yunlong Jiao, Viacheslav Klimkov +2

This paper proposes a general enhancement to the Normalizing Flows (NF) used in neural vocoding. As a case study, we improve expressive speech vocoding with a revamped Parallel Wav…

cs.LG2021

SynthASR: Unlocking Synthetic Data for Speech Recognition

Amin Fazel, Wei Yang, Yulan Liu +4

End-to-end (E2E) automatic speech recognition (ASR) models have recently demonstrated superior performance over the traditional hybrid ASR models. Training an E2E ASR model require…

cs.SD2021

Improving multi-speaker TTS prosody variance with a residual encoder and normalizing flows

Iván Vallés-Pérez, Julian Roth, Grzegorz Beringer +2

Text-to-speech systems recently achieved almost indistinguishable quality from human speech. However, the prosody of those systems is generally flatter than natural speech, produci…

eess.AS2020★ 4 cited

Parallel WaveNet conditioned on VAE latent vectors

Jonas Rohnke, Tom Merritt, Jaime Lorenzo-Trueba +4

Recently the state-of-the-art text-to-speech synthesis systems have shifted to a two-model approach: a sequence-to-sequence model to predict a representation of speech (typically m…

eess.AS2020

Detection of Lexical Stress Errors in Non-Native (L2) English with Data Augmentation and Attention

Daniel Korzekwa, Roberto Barra-Chicote, Szymon Zaporowski +6

This paper describes two novel complementary techniques that improve the detection of lexical stress errors in non-native (L2) English speech: attention-based feature extraction an…

eess.AS2020

BOFFIN TTS: Few-Shot Speaker Adaptation by Bayesian Optimization

Henry B. Moss, Vatsal Aggarwal, Nishant Prateek +2

We present BOFFIN TTS (Bayesian Optimization For FIne-tuning Neural Text To Speech), a novel approach for few-shot speaker adaptation. Here, the task is to fine-tune a pre-trained…

cs.CL2020

From Speech-to-Speech Translation to Automatic Dubbing

Marcello Federico, Robert Enyedi, Roberto Barra-Chicote +4

We present enhancements to a speech-to-speech translation pipeline in order to perform automatic dubbing. Our architecture features neural machine translation generating output of…

cs.LG2019

Using VAEs and Normalizing Flows for One-shot Text-To-Speech Synthesis of Expressive Speech

Vatsal Aggarwal, Marius Cotescu, Nishant Prateek +2

We propose a Text-to-Speech method to create an unseen expressive style using one utterance of expressive speech of around one second. Specifically, we enhance the disentanglement…

eess.AS2019

Interpretable Deep Learning Model for the Detection and Reconstruction of Dysarthric Speech

Daniel Korzekwa, Roberto Barra-Chicote, Bozena Kostek +2

This paper proposed a novel approach for the detection and reconstruction of dysarthric speech. The encoder-decoder model factorizes speech into a low-dimensional latent space and…

cs.CL2019★ 1 cited

In Other News: A Bi-style Text-to-speech Model for Synthesizing Newscaster Voice with Limited Data

Nishant Prateek, Mateusz Łajszczak, Roberto Barra-Chicote +5

Neural text-to-speech synthesis (NTTS) models have shown significant progress in generating high-quality speech, however they require a large quantity of training data. This makes…

eess.AS2018

Comprehensive evaluation of statistical speech waveform synthesis

Thomas Merritt, Bartosz Putrycz, Adam Nadolski +10

Statistical TTS systems that directly predict the speech waveform have recently reported improvements in synthesis quality. This investigation evaluates Amazon's statistical speech…

eess.AS2018★ 8 cited

Towards achieving robust universal neural vocoding

Jaime Lorenzo-Trueba, Thomas Drugman, Javier Latorre +5

This paper explores the potential universality of neural vocoders. We train a WaveRNN-based vocoder on 74 speakers coming from 17 languages. This vocoder is shown to be capable of…