6 papers · 1 filter
PACodec: A Low-bitrate Neural Speech Codec with Parallel Additive Vector Quantization
Fei Liu, Yang Ai, Xiao-Hang Jiang +1
This paper proposes PACodec, a novel low-bitrate neural speech codec based on parallel additive vector quantization (PAVQ). Unlike the mainstream residual vector quantization (RVQ)…
Beyond WER: A Paired Acoustic Stress Test for Ambient Clinical Scribes
Xiao-Hang Jiang, Han-Jie Guo, Ying-Si Liang +4
Ambient clinical scribes increasingly combine Automatic Speech Recognition with Large Language Models to automate documentation. However, traditional metrics like Word Error Rate m…
A Streamable Neural Audio Codec with Residual Scalar-Vector Quantization for Real-Time Communication
Xiao-Hang Jiang, Yang Ai, Rui-Chen Zheng +1
This paper proposes StreamCodec, a streamable neural audio codec designed for real-time communication. StreamCodec adopts a fully causal, symmetric encoder-decoder structure and op…
ESTVocoder: An Excitation-Spectral-Transformed Neural Vocoder Conditioned on Mel Spectrogram
Xiao-Hang Jiang, Hui-Peng Du, Yang Ai +2
This paper proposes ESTVocoder, a novel excitation-spectral-transformed neural vocoder within the framework of source-filter theory. The ESTVocoder transforms the amplitude and pha…
MDCTCodec: A Lightweight MDCT-based Neural Audio Codec towards High Sampling Rate and Low Bitrate Scenarios
Xiao-Hang Jiang, Yang Ai, Rui-Chen Zheng +3
In this paper, we propose MDCTCodec, an efficient lightweight end-to-end neural audio codec based on the modified discrete cosine transform (MDCT). The encoder takes the MDCT spect…
APCodec: A Neural Audio Codec with Parallel Amplitude and Phase Spectrum Encoding and Decoding
Yang Ai, Xiao-Hang Jiang, Ye-Xin Lu +2
This paper introduces a novel neural audio codec targeting high waveform sampling rates and low bitrates named APCodec, which seamlessly integrates the strengths of parametric code…