Noise Activity Detection Based on 4th Order Cumulant for Impact Noise
Noise Activity Detection Based on 4th Order Cumulant for Impact Noise
复制标题
基于四阶累积量的冲击噪声噪声活动检测
DOI：
10.1109/apccas.2014.7032725
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Yoshio Itoh
中科院分区：
文献类型：
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作者：
Norihiro Mamizu;Naoto Sasaoka;Yoshio Itoh
作为对冲击噪声的语音增强，检测冲击噪声的活动性非常重要。然而，由于冲击噪声是通过撞击物体、啪啪声和拍击声突然产生的，因此冲击噪声活动不容易检测。为此，本文提出了基于四阶累积量的冲击噪声活动性检测器。冲击噪声的持续时间比言语持续时间短，冲击噪声的强度变化较大。因此，冲击噪声和语音的瞬时功率分布是不同的。因此，本文提出的冲击噪声活动性检测利用了依赖于清晰度和分布边缘的四阶累积量。
As speech enhancement for impact noise, it is important to detect the impact noise activity. However, since the impact noise suddenly occurs by hitting an object, a snap and clapping, the impact noise activity cannot be detected easy. Therefore, this paper proposes the impact noise activity detector based on 4th order cumulant. The continuous duration of impact noise is shorter than the one of speech and the power of impact noise sharply varies. Consequently, the distributions of instantaneous power of the impact noise and speech are difference. Therefore, the proposed impact noise activity detection takes advantage of 4th order cumulant which depends on sharpness and skirt of distribution.