计算机工程与应用2019，Vol.55Issue(8)：48-52,5.DOI:10.3778/j.issn.1002-8331.1805-0454
改进相位谱补偿的语音增强方法
Speech Enhancement Method for Improving Phase Spectrum Compensation
摘要
Abstract
Aiming to the problem that the clean speech phase is replaced by the noisy speech phase when reconstructing the waveform in the traditional single-channel speech enhancement methods, which leads to the poor subjective percep-tion quality of the speech, a speech enhancement algorithm with improved phase spectrum compensation is proposed. Firstly, the Sigmoid phase-spectral compensation function which is based on the signal to noise ratio of each frame input speech is presented in this paper, it can flexibly compensate the phase spectrum of the noisy according to the change of noise. Next, it estimates noise power spectrum through combining a priori SNR estimation of the improved DD and Speech Presence Probability algorithm(SPP). Finally, Wiener filtering is applied to improve speech enhancement effect by combining the new speech presence probability noise power spectrum estimation and phase spectrum compensation. Compared to the traditional Phase Spectrum Compensation(PSC)algorithm, the improved algorithm can effectively sup-press the noise in the audio signal, and then enhance the perceived quality of the speech and improve speech intelligibility.关键词
相位谱补偿/功率谱估计/先验信噪比/语音增强Key words
phase spectrum compensation/ power spectrum estimation/ priori signal-to-noise ratio/ speech enhancement分类
信息技术与安全科学引用本文复制引用
吉慧芳,贾海蓉,王雁..改进相位谱补偿的语音增强方法[J].计算机工程与应用,2019,55(8):48-52,5.基金项目
国家自然科学基金(No.61672124,No.61370145,No.61173183) （No.61672124,No.61370145,No.61173183）
"十三五"国家密码发展基金密码理论研究课题(No.MMJJ20170203). （No.MMJJ20170203）
