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基于最大后驗相位估計的多帶譜減語音增強(qiáng)算法

李真,  吳文錦,  張勤,  任慧

李真, 吳文錦, 張勤, 任慧. 基于最大后驗相位估計的多帶譜減語音增強(qiáng)算法[J]. 電子與信息學(xué)報, 2017, 39(9): 2282-2286. doi: 10.11999/JEIT161381
引用本文: 李真, 吳文錦, 張勤, 任慧. 基于最大后驗相位估計的多帶譜減語音增強(qiáng)算法[J]. 電子與信息學(xué)報, 2017, 39(9): 2282-2286. doi: 10.11999/JEIT161381
LI Zhen, WU Wenjin, ZHANG Qin, REN Hui. Multi-band Spectral Subtraction of Speech Enhancement Based on Maximum Posteriori Phase Estimation[J]. Journal of Electronics & Information Technology, 2017, 39(9): 2282-2286. doi: 10.11999/JEIT161381
Citation: LI Zhen, WU Wenjin, ZHANG Qin, REN Hui. Multi-band Spectral Subtraction of Speech Enhancement Based on Maximum Posteriori Phase Estimation[J]. Journal of Electronics & Information Technology, 2017, 39(9): 2282-2286. doi: 10.11999/JEIT161381

基于最大后驗相位估計的多帶譜減語音增強(qiáng)算法

doi: 10.11999/JEIT161381 cstr: 32379.14.JEIT161381
基金項目: 

十二五國家科技支撐計劃重大項目(2012BAH38F00)

Multi-band Spectral Subtraction of Speech Enhancement Based on Maximum Posteriori Phase Estimation

Funds: 

The National Science and Technology Planning?Project (2012BAH38F00)

  • 摘要: 傳統(tǒng)語音增強(qiáng)算法中因為譜減法算法簡單易于實現(xiàn)而得到廣泛研究，譜減法的原理是將帶噪語音幅度與估計的噪聲幅度進(jìn)行相減，并疊加帶噪語音相位，進(jìn)而重構(gòu)增強(qiáng)語音譜。該方法在低信噪比下因為沒有進(jìn)行相位估計，會存在較大的估計誤差，并且因為對噪聲估計的不準(zhǔn)確，會產(chǎn)生 音樂噪聲?；谧V減法的缺點該文提出一種基于最大后驗相位估計的多帶譜減法，其中多帶譜減法可減少音樂噪聲的影響，最大后驗方法估計純凈語音相位，可以減少在低信噪比時的估計誤差。實驗結(jié)果表明該方法在低信噪比時取得了較好的增強(qiáng)效果。
    Abstract: The spectral subtraction speech enhancement is extensively used due to its simplicity and easy to implement. The principle of this method is to subtract the estimated magnitude of the noise from the magnitude of the noisy signal, but the phase of the noisy signal is unchanged. This conventional method produces the estimating error because it exploits the noisy phase, especially in low SNR, and it produces musical noise because of the inaccuracy of the noise estimation. This paper proposes a multi-band spectral subtraction algorithm based on maximum posteriori phase estimation. Experimental results show that the proposed method can get better performance than the conventional method especially in low SNR.
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    GAICH A and MOWLAEE P. On speech quality estimation of phase-aware single-channel speech enhancement[C]. Proceedings of the IEEE International Conference on Acoustics, Speech and Signal Processing(ICASSP), Brisbane, Australia, 2015: 216-220.
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  • 文章訪問數(shù):  1358
  • HTML全文瀏覽量:  217
  • PDF下載量:  277
  • 被引次數(shù): 0
出版歷程
  • 收稿日期:  2016-12-21
  • 修回日期:  2017-04-25
  • 刊出日期:  2017-09-19

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