Multi-Band Spectral Subtraction Method for Electrolarynx Speech Enhancement

Multi-Band Spectral Subtraction Method for Electrolarynx Speech Enhancement
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电喉语音增强的多频带谱减法

DOI:
10.3390/a2010550
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发表时间:
2009-03
期刊:
影响因子:
2.3
通讯作者:
--
中科院分区:
--
文献类型:
--
作者:

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尽管电喉(EL)为喉切除术后失去声带的患者提供了一种重要的声音重建手段,但辐射噪声和附加环境噪声降低了电喉语音的可理解性。本文提出了一种改进的频谱减去算法,该算法考虑了彩色噪声对低频语音频谱的非均匀性影响。由于在增强过程中可以调整各频段的过减因子,因此与其他标准语音增强算法相比,获得了更好的降噪效果,有效地降低了感知上令人讨厌的音乐噪声。
Although the electrolarynx (EL) provides an important means of voice reconstruction for patients who lose their vocal cords by laryngectomies, the radiated noise and additive environment noise reduce the intelligibility of the resulting EL speech. This paper proposes an improved spectrum subtract algorithm by taking into account the non-uniform effect of colored noise on the spectrum of EL speech. Since the over-subtraction factor of each frequency band can be adjusted in the enhancement process, a better noise reduction effect was obtained and the perceptually annoying musical noise was efficiently reduced, as compared to other standard speech enhancement algorithms.
DOI: 10.1121/1.2186548
发表时间: 2006-04
期刊: The Journal of the Acoustical Society of America
影响因子: --
作者:
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影响因子: 2.6
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