Adaptive noise energy estimation in pathological speech signals

被引:38
作者
Manfredi, C [1 ]
机构
[1] Univ Florence, Dept Elect & Telecommun, I-50139 Florence, Italy
关键词
adaptive estimation; noise; pathological voice; pitch; voice analysis;
D O I
10.1109/10.880107
中图分类号
R318 [生物医学工程];
学科分类号
0831 ;
摘要
For pathological voices, spectral noise is closely related to the degree of perceived hoarseness. In this paper, noise variations are tracked during an utterance by means of an adaptive version of the normalized noise energy method [1]. A first step is devoted to pitch estimation, which allows defining the varying optimal time window length for noise retrieval, avoiding empty ''dip" regions. The approach is tested on synthetic data and applied to real data coming from cordectomised adult male patients.
引用
收藏
页码:1538 / 1543
页数:6
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