arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2001.09571eess.AS
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基于噪声相关超高斯-相干的双麦克风语音增强在智能手机助听器中的应用

Noise dependent Super Gaussian-Coherence based dual microphone Speech Enhancement for hearing aid application using smartphone

Nikhil Shankar, Gautam S Bhat, Chandan K A Reddy, Issa Panahi

摘要:

本文利用语音和噪声信号的相干性,结合超高斯联合最大后验概率(SGJMAP)单麦克风语音增强增益函数,得到一种语音增强(SE)增益函数。所提出的SE方法可以在智能手机上实现,该智能手机用作助听器的辅助设备。相干SE增益函数虽然能很好地抑制背景噪声,但也会使语音失真。相反,SE使用SGJMAP提高语音质量与额外的音乐噪声,我们包含使用后滤波器。这两个增益函数的加权联合在噪声抑制和语音失真之间取得了平衡。在导出的增益函数中引入“加权”参数,以允许智能手机用户基于不同的背景噪声和他们的听觉舒适度来控制加权因子。所提出的方法的客观和主观的措施相比,本文考虑的几个嘈杂的条件下,在信噪比水平为-5 dB,0 dB和5 dB的标准技术显示出有效的改善。

英文摘要:

In this paper, the coherence between speech and noise signals is used to obtain a Speech Enhancement (SE) gain function, in combination with a Super Gaussian Joint Maximum a Posteriori (SGJMAP) single microphone SE gain function. The proposed SE method can be implemented on a smartphone that works as an assistive device to hearing aids. Although coherence SE gain function suppresses the background noise well, it distorts the speech. In contrary, SE using SGJMAP improves speech quality with additional musical noise, which we contain by using a post filter. The weighted union of these two gain functions strikes a balance between noise suppression and speech distortion. A 'weighting' parameter is introduced in the derived gain function to allow the smartphone user to control the weighting factor based on different background noise and their comfort level of hearing. Objective and subjective measures of the proposed method show effective improvement in comparison to standard techniques considered in this paper for several noisy conditions at signal to noise ratio levels of -5 dB, 0 dB and 5 dB.

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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