activity
20222026
most citedASR data augmentation in low-resource settings using cross-lingual multi-speaker TTS and cross-lingual voice conversion

4 citations · 10 across the 15 of their papers we have counts for

collaborators

18 papers

cs.CL2026

NemotronLabs VoiceChat: An Open Full-duplex Speech-to-Speech Model with Tool Calling Capabilities

Jagadeesh Balam, Travis Bartley, Edresson Casanova +52

We introduce NemotronLabs VoiceChat, an open full-duplex speech-to-speech model with native tool-calling capabilities. NemotronLabs VoiceChat combines a streaming speech encoder an…

cs.CL2026

A frontend-backend architecture for tool calls in full-duplex speech models

Ke Hu, Slyne Deng, Chen Chen +10

Full-duplex speech-to-speech (S2S) models provide natural, low-latency conversational interaction and would benefit from the ability to use external tools and complete voice-agent…

cs.CL2026

Enabling Streaming User Transcription in Full-Duplex Speech-to-Speech Models

Ke Hu, Nourchene Ferchichi, Edresson Casanova +9

Full-duplex speech-to-speech (S2S) models enable natural conversational AI by allowing simultaneous listening and speaking. However, these models typically lack inherent user speec…

eess.AS2026

VoiceChat-TTS: A Low-Latency Continuous Speech Synthesis Model for Interactive Agents

Edresson Casanova, Jaehyeon Kim, Mariana Graterol Fuenmayor +17

Spoken dialogue is a natural form of human--computer interaction, yet most speech language models remain limited to turn-based operation and lack real-time adaptability, such as us…

cs.CL2026

Tagarela - A Portuguese speech dataset from podcasts

Frederico Santos de Oliveira, Lucas Rafael Stefanel Gris, Alef Iury Siqueira Ferreira +8

Despite significant advances in speech processing, Portuguese remains under-resourced due to the scarcity of public, large-scale, and high-quality datasets. To address this gap, we…

cs.AI2025

Align2Speak: Improving TTS for Low Resource Languages via ASR-Guided Online Preference Optimization

Shehzeen Hussain, Paarth Neekhara, Xuesong Yang +7

Developing high-quality text-to-speech (TTS) systems for low-resource languages is challenging due to the scarcity of paired text and speech data. In contrast, automatic speech rec…

eess.AS2025

Frame-Stacked Local Transformers For Efficient Multi-Codebook Speech Generation

Roy Fejgin, Paarth Neekhara, Xuesong Yang +6

Speech generation models based on large language models (LLMs) typically operate on discrete acoustic codes, which differ fundamentally from text tokens due to their multicodebook…

eess.AS2025

NanoCodec: Towards High-Quality Ultra Fast Speech LLM Inference

Edresson Casanova, Paarth Neekhara, Ryan Langman +6

Large Language Models (LLMs) have significantly advanced audio processing by leveraging audio codecs to discretize audio into tokens, enabling the application of language modeling…

eess.AS2025

HiFiTTS-2: A Large-Scale High Bandwidth Speech Dataset

Ryan Langman, Xuesong Yang, Paarth Neekhara +4

This paper introduces HiFiTTS-2, a large-scale speech dataset designed for high-bandwidth speech synthesis. The dataset is derived from LibriVox audiobooks, and contains approximat…

cs.CL2025

SALM-Duplex: Efficient and Direct Duplex Modeling for Speech-to-Speech Language Model

Ke Hu, Ehsan Hosseini-Asl, Chen Chen +7

Spoken dialogue is an intuitive form of human-computer interaction, yet current speech language models often remain constrained to turn-based exchanges, lacking real-time adaptabil…

cs.SD2025

Koel-TTS: Enhancing LLM based Speech Generation with Preference Alignment and Classifier Free Guidance

Shehzeen Hussain, Paarth Neekhara, Xuesong Yang +6

While autoregressive speech token generation models produce speech with remarkable variety and naturalness, their inherent lack of controllability often results in issues such as h…

cs.SD2025★ 3 cited

FreeSVC: Towards Zero-shot Multilingual Singing Voice Conversion

Alef Iury Siqueira Ferreira, Lucas Rafael Gris, Augusto Seben da Rosa +6

This work presents FreeSVC, a promising multilingual singing voice conversion approach that leverages an enhanced VITS model with Speaker-invariant Clustering (SPIN) for better con…

eess.AS2024

Low Frame-rate Speech Codec: a Codec Designed for Fast High-quality Speech LLM Training and Inference

Edresson Casanova, Ryan Langman, Paarth Neekhara +5

Large language models (LLMs) have significantly advanced audio processing through audio codecs that convert audio into discrete tokens, enabling the application of language modelin…

eess.AS2023

CML-TTS A Multilingual Dataset for Speech Synthesis in Low-Resource Languages

Frederico S. Oliveira, Edresson Casanova, Arnaldo Cândido Júnior +2

In this paper, we present CML-TTS, a recursive acronym for CML-Multi-Lingual-TTS, a new Text-to-Speech (TTS) dataset developed at the Center of Excellence in Artificial Intelligenc…

cs.SD2023★ 1 cited

Evaluation of Speech Representations for MOS prediction

Frederico S. Oliveira, Edresson Casanova, Arnaldo Cândido Júnior +3

In this paper, we evaluate feature extraction models for predicting speech quality. We also propose a model architecture to compare embeddings of supervised learning and self-super…

cs.CL2023★ 2 cited

Evaluating OpenAI's Whisper ASR for Punctuation Prediction and Topic Modeling of life histories of the Museum of the Person

Lucas Rafael Stefanel Gris, Ricardo Marcacini, Arnaldo Candido Junior +3

Automatic speech recognition (ASR) systems play a key role in applications involving human-machine interactions. Despite their importance, ASR models for the Portuguese language pr…

eess.AS2022

BibleTTS: a large, high-fidelity, multilingual, and uniquely African speech corpus

Josh Meyer, David Ifeoluwa Adelani, Edresson Casanova +16

BibleTTS is a large, high-quality, open speech dataset for ten languages spoken in Sub-Saharan Africa. The corpus contains up to 86 hours of aligned, studio quality 48kHz single sp…

eess.AS2022★ 4 cited

ASR data augmentation in low-resource settings using cross-lingual multi-speaker TTS and cross-lingual voice conversion

Edresson Casanova, Christopher Shulby, Alexander Korolev +4

We explore cross-lingual multi-speaker speech synthesis and cross-lingual voice conversion applied to data augmentation for automatic speech recognition (ASR) systems in low/medium…