Open AccessVibrato and tremor extent spectrum: Algorithm and applications
Author(s) -
Maurílio Nunes Vieira,
José Eduardo de C Silva,
Hani Camille Yehia
Publication year - 2011
Publication title -
the journal of the acoustical society of america/the journal of the acoustical society of america
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.619
H-Index - 187
eISSN - 1520-8524
pISSN - 0001-4966
DOI - 10.1121/1.3590170
Subject(s) - vibrato , weighting , frequency domain , algorithm , acoustics , spectrum (functional analysis) , spectral line , computer science , mathematics , a weighting , window (computing) , physics , mathematical analysis , quantum mechanics , astronomy , singing , operating system
This work investigated the measurement of vibrato and tremor extent values. Related works have not explored the possibility of measuring extent in the spectra of fundamental frequency (f(0)) low-frequency undulations. It is shown here that by canceling average (DC) values and baseline drifts of f(0) contours, as well as weighting the respective spectra by the time window DC value, extent measures can be promptly obtained in the frequency domain. The method is illustrated with measurements from synthetic and human data.