考虑强噪声干扰的数字音频信号质量增强方法

打开文本图片集

DOI：10.16652/j.issn.1004-373x.2026.01.012 引用格式：.考虑强噪声干扰的数字音频信号质量增强方法[J].现代电子技术，2026，49（1）：73-76.

关键词：强噪声干扰；数字音频信号；信号质量增强；短时傅里叶变换；梅尔频率倒谱；Hankel矩阵中图分类号：TN911-34；TH73 文献标识码：A 文章编号：1004-373X（2026）01-0073-04

Digital audio signal quality enhancement method considering strongnoiseinterference

ZHANG Bing （ShandongUniversityof Technology，Zibo255ooo，China）

Abstract：Effectivefeaturesindigitalaudiosignalsareeasilymaskedbystrongnoise，andthetimedomaincharacteristics andfreqencydomaincharacteristicsofthesignalsareconfused，whichresultsininsuficientaudioclarityandgreatlyrduced inteligibilitysoadigialudiosignalqualityeancementmethodonsideringstrongnoiseinterferenceissudiedOnthebasis ofthetimeperiodosiioingmetod，pre-proessingisapplidtotherongnisetocheveinitialeancementoftesigals. Then，thedigitalaudiosignalsof thetargetedtimeperiodaresubjectedtoshort-timeFouriertransformandmapped tothe Mel-Frequencyscaletoobtainfinefeaturesoftheresidual strong noiseaudiosignalsinthetargetedtimeperiod.Thesingular valuedecomposition（SVD）isusedtoseparateaudiofromnoise features，andqualityenhanceddigitalaudiosignalsareoutputtd byinversediagonal elementaveragingandfeatureinversetransformation.Theexperimentalresultsshowthattheproposed method can improve SNR（signal-to-noise ratio） byup to 7.2dB，and even under extreme strong noise of -10 dB，the method still exhibitstedvantagesofstableenhancementacrosstypesandstrengths，soitisauniversalandeficientdigitalaudiosignal quality enhancement method.

Keywords：strongnoiseinterference;digitalaudiosignal;signalqualityenhancement；short-timeFouriertransform; Mel-Frequency cepstrum;Hankel matrix

0 引言

数字音频信号增强技术的核心目的是通过一系列技术手段抑制信号中的干扰成分、修复失真部分、保留核心特征，从而提升音频信号的质量[1-3]，确保其在各类场景下能够有效发挥信息传递与价值呈现的作用，对推动数字音频相关领域的技术发展与应用落地具有重要的现实意义。（剩余5514字）