一種雙微陣列語音增強方法

曾慶寧; 肖強; 王瑤; 謝先明; 龍超

doi:10.11999/JEIT170758

一種雙微陣列語音增強方法

doi: 10.11999/JEIT170758

基金項目:

國家自然科學基金(61461011)，認知無線電與信息處理教育部重點實驗室2016年主任基金(CRKL160107)，廣西自然科學基金重點項目(2016GXNSFDA380018)，廣西無線寬帶通信與信號處理重點實驗室基金項目(CRKL170108)，2017桂林電子科技大學研究生創(chuàng)新項目(2017YJCX16, 2017YJCX20)

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出版歷程
- 收稿日期: 2017-07-25
- 修回日期: 2018-01-11
- 刊出日期: 2018-05-19

A Dual Micro-array Speech Enhancement Method

Funds:

The National Natural Science Foundation of China (61461011), The Key Laboratory of Cognitive Radio and Information Processing of Ministry of Education 2016 (CRKL 160107), The Key Project of Guangxi Natural Science Foundation (2016GXNSFDA380018), The Guangxi Wireless Broadband Communication and Signal Processing Key Laboratory Foundation Project (CRKL170108), 2017 Guilin University of Electronic Technology Graduate Innovation Project (2017YJCX16, 2017YJCX20)

摘要

摘要: 為提高語音通信系統在噪聲環(huán)境下的使用性能，該文提出一種基于子帶譜減與廣義旁瓣抵消的雙微陣列語音增強方法。基于雙微陣列及子帶結構分析，首先分別在低頻帶采用可變過減因子譜減法抑制噪聲，在高頻帶采用修改互功率譜譜減法抑制非相干性噪聲部分，再結合廣義旁瓣抵消與端點檢測進一步抑制強相關性噪聲的影響。實驗結果表明，該方法能夠更加有效地抑制噪聲的影響并提高語音的可懂度。
- 語音信號處理 /
- 子帶譜減 /
- 廣義旁瓣抵消 /
- 雙微陣列
Abstract: In order to improve the performance of speech communication system in noisy environment, a dual micro-array speech enhancement method based on subband spectrum subtraction and generalized sidelobe canceller is proposed. Based on dual micro-array structure and the subband structure analysis, this method suppresses the noise in the low frequency band by the spectrum subtraction method which may employ variable over-subtraction factor in it and suppresses the non-coherent noise part in the high frequency band by modifying cross power spectrum subtraction method, respectively. Then generalized sidelobe canceller and voice activity detector are combined with the method mentioned above to further suppress the influence of strong coherent noise further. The experimental results show that the proposed method can suppress the influence of noise and improve the intelligibility of speech more effectively.
- Speech signal processing /
- Subband spectrum subtraction /
- Generalized sidelobe canceller /
- Dual micro- array

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參考文獻(21)

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