Cross validation and Minimum Generation Error for improved model clustering in HMM-based TTS. - Feng-Long Xie; Yi-Jian Wu; Frank K. Soong (ISCSLP, 2012)

TTS synthesis with bidirectional LSTM based recurrent neural networks. - Yuchen Fan; Yao Qian; Feng-Long Xie; Frank K. Soong (INTERSPEECH, 2014)

Sequence error (SE) minimization training of neural network for voice conversion. - Feng-Long Xie; Yao Qian; Yuchen Fan; Frank K. Soong; Haifeng Li 001 (INTERSPEECH, 2014)

Pitch transformation in neural network based voice conversion. - Feng-Long Xie; Yao Qian; Frank K. Soong; Haifeng Li 001 (ISCSLP, 2014)

A KL divergence and DNN approach to cross-lingual TTS. - Feng-Long Xie; Frank K. Soong; Haifeng Li 001 (ICASSP, 2016)

A KL Divergence and DNN-Based Approach to Voice Conversion without Parallel Training Sentences. - Feng-Long Xie; Frank K. Soong; Haifeng Li 001 (INTERSPEECH, 2016)

Frame Selection in SI-DNN Phonetic Space with WaveNet Vocoder for Voice Conversion without Parallel Training Data. - Feng-Long Xie; Frank K. Soong; Xi Wang 016; Lei He 005; Haifeng Li 001 (ISCSLP, 2018)

LP-WaveNet: Linear Prediction-based WaveNet Speech Synthesis. - Min-Jae Hwang; Frank K. Soong; Feng-Long Xie; Xi Wang 016; Hong-Goo Kang (CoRR, 2018)

Voice conversion with SI-DNN and KL divergence based mapping without parallel training data. - Feng-Long Xie; Frank K. Soong; Haifeng Li 001 (Speech Commun., 2019)

An Improved Frame-Unit-Selection Based Voice Conversion System Without Parallel Training Data. - Feng-Long Xie; Xinhui Li; Bo Liu; Yibin Zheng; Li Meng; Li Lu; Frank K. Soong (ICASSP, 2020)

Improving End-to-End Speech Synthesis with Local Recurrent Neural Network Enhanced Transformer. - Yibin Zheng; Xinhui Li; Fenglong Xie; Li Lu (ICASSP, 2020)

Nana-HDR: A Non-attentive Non-autoregressive Hybrid Model for TTS. - Shilun Lin; Wen-Chao Su; Li Meng; Fenglong Xie; Xinhui Li; Li Lu (Blizzard Challenge, 2021)

A New High Quality Trajectory Tiling Based Hybrid TTS In Real Time. - Feng-Long Xie; Xinhui Li; Wen-Chao Su; Li Lu; Frank K. Soong (ICASSP, 2021)

Triple M: A Practical Text-to-Speech Synthesis System with Multi-Guidance Attention and Multi-Band Multi-Time LPCNet. - Shilun Lin; Fenglong Xie; Li Meng; Xinhui Li; Li Lu (Interspeech, 2021)

Triple M: A Practical Neural Text-to-speech System With Multi-guidance Attention And Multi-band Multi-time Lpcnet. - Shilun Lin; Fenglong Xie; Xinhui Li; Li Lu (CoRR, 2021)

A Multi-Stage Multi-Codebook VQ-VAE Approach to High-Performance Neural TTS. - Haohan Guo; Feng-Long Xie; Frank K. Soong; Xixin Wu; Helen Meng (INTERSPEECH, 2022)

Towards High-Quality Neural TTS for Low-Resource Languages by Learning Compact Speech Representations. - Haohan Guo; Fenglong Xie; Xixin Wu; Hui Lu; Helen Meng (CoRR, 2022)

FireRedTTS: The Xiaohongshu Speech Synthesis System for Blizzard Challenge 2023. - Kun Xie; Yi-Chen Wu; Feng-Long Xie (Blizzard Challenge, 2023)

QS-TTS: Towards Semi-Supervised Text-to-Speech Synthesis via Vector-Quantized Self-Supervised Speech Representation Learning. - Haohan Guo; Fenglong Xie; Jiawen Kang 002; Yujia Xiao; Xixin Wu; Helen Meng (CoRR, 2023)

MSMC-TTS: Multi-Stage Multi-Codebook VQ-VAE Based Neural TTS. - Haohan Guo; Fenglong Xie; Xixin Wu; Frank K. Soong; Helen Meng (IEEE ACM Trans. Audio Speech Lang. Process., 2023)

SoCodec: A Semantic-Ordered Multi-Stream Speech Codec For Efficient Language Model Based Text-to-Speech Synthesis. - Haohan Guo; Fenglong Xie; Kun Xie; Dongchao Yang; Dake Guo; Xixin Wu; Helen Meng (SLT, 2024)

Addressing Index Collapse of Large-Codebook Speech Tokenizer With Dual-Decoding Product-Quantized Variational Auto-Encoder. - Haohan Guo; Fenglong Xie; Dongchao Yang; Hui Lu; Xixin Wu; Helen Meng (SLT, 2024)

FireRedTTS: A Foundation Text-To-Speech Framework for Industry-Level Generative Speech Applications. - Haohan Guo; Kun Liu; Feiyu Shen; Yi-Chen Wu; Feng-Long Xie; Kun Xie; Kaituo Xu (CoRR, 2024)

PodAgent: A Comprehensive Framework for Podcast Generation. - Yujia Xiao; Lei He 005; Haohan Guo; Fenglong Xie; Tan Lee 001 (ACL (Findings), 2025)

Speaking from Coarse to Fine: Improving Neural Codec Language Model via Multi-Scale Speech Coding and Generation. - Haohan Guo; Fenglong Xie; Dongchao Yang; Xixin Wu; Helen Meng (ICASSP, 2025)

FireRedASR: Open-Source Industrial-Grade Mandarin Speech Recognition Models from Encoder-Decoder to LLM Integration. - Kaituo Xu; Feng-Long Xie; Xu Tang; Yao Hu 002 (CoRR, 2025)

FireRedTTS-1S: An Upgraded Streamable Foundation Text-to-Speech System. - Haohan Guo; Kun Xie; Yi-Chen Wu; Feng-Long Xie; Xu Tang; Yao Hu 002 (CoRR, 2025)