On the use of the derivative of electroglottographic signals for characterization of nonpathological phonation
On the use of the derivative of electroglottographic signals for characterization of nonpathological phonation
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DOI：
10.1121/1.1646401
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发表时间：
2004-03-01
影响因子：
2.4
通讯作者：
Castellengo, M
中科院分区：
文献类型：
--
作者：
Henrich, N;d'Alessandro, C;Castellengo, M
声门电图是一种常用的无创测量声门活动的方法。然而，声门电信号的导数并没有引起太多的注意，尽管它提供了声门关闭瞬间的可靠指标。本文的目的是为这种信号的有用性提供指导。该信号的主要特征是基于对18位训练有素的歌手演唱的歌曲数据库的广泛分析而呈现的。声门打开和关闭的瞬间与信号中的峰值有关；后者可用于测量声门参数，如基频和开商。在某些情况下，峰值加倍或不精确，这表明特殊（但绝非罕见）的声门结构。提出了一种利用声门电信号导数自动测量基频和开商的相关算法。它是比较其他三种基于电声门的方法，关于开放商的测量在反过滤导出的声门流动。结果表明，在持续声音的情况下，与声门流量测量的一致性比大多数基于阈值的测量要好得多。(C) 2004美国声学学会。
Electroglottography is a common method for providing noninvasive measurements of glottal activity. The derivative of the electroglottographic signal, however, has not attracted much attention, although it yields reliable indicators of glottal closing instants. The purpose of this paper is to provide a guide to the usefulness of this signal. The main features that are to be found in this signal are presented on the basis of an extensive analysis of a database of items sung by 18 trained singers. Glottal opening and closing instants are related to peaks in the signal; the latter can be used to measure glottal parameters such as fundamental frequency and open quotient. In some cases, peaks are doubled or imprecise, which points to special (but by no means uncommon) glottal configurations. A correlation-based algorithm for the automatic measurement of fundamental frequency and open quotient using the derivative of electroglottographic signals is proposed. It is compared to three other electroglottographic-based methods with regard to the measurement of open quotient in inverse-filtered derived glottal flow. It is shown that agreement with the glottal-flow measurements is much better than most threshold-based measurements in the case of sustained sounds. (C) 2004 Acoustical Society of America.