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arXiv 2409.05784cs.SDeess.AS
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基于向量量化扩散模型的语音带宽扩展

Vector Quantized Diffusion Model Based Speech Bandwidth Extension

College of Computer Science, Inner Mongolia University(内蒙古大学计算机学院);SenseAuto Intelligent Connection, SenseTime(商汤科技 SenseAuto 智能连接)

Yuan Fang, Jinglin Bai, Jiajie Wang, Xueliang Zhang

AI总结:

针对语音带宽扩展任务,本文提出首个基于神经音频编解码器离散特征、融合向量量化扩散与Mamba-2的框架,经实验验证可显著提升语音质量。

摘要:

神经音频编解码器(NAC)的最新进展为音频信号处理解锁了新潜力。越来越多的研究探索将NAC的潜在特征用于各类语音信号处理任务。本文提出了首个利用从NAC中获取的离散特征的语音带宽扩展(BWE)方法。该方法通过在高度压缩的离散token内恢复高频细节,提升语音的清晰度和自然度。所提框架基于向量量化扩散(Vector Quantized Diffusion),融合了先进NAC、扩散模型和Mamba-2的优势来重构高频语音分量。大量实验表明,该方法在对数谱距离和ViSQOL两项指标上均表现出优异性能,显著提升了语音质量。

英文摘要:

Recent advancements in neural audio codec (NAC) unlock new potential in audio signal processing. Studies have increasingly explored leveraging the latent features of NAC for various speech signal processing tasks. This paper introduces the first approach to speech bandwidth extension (BWE) that utilizes the discrete features obtained from NAC. By restoring high-frequency details within highly compressed discrete tokens, this approach enhances speech intelligibility and naturalness. Based on Vector Quantized Diffusion, the proposed framework combines the strengths of advanced NAC, diffusion models, and Mamba-2 to reconstruct high-frequency speech components. Extensive experiments demonstrate that this method exhibits superior performance across both log-spectral distance and ViSQOL, significantly improving speech quality.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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