Paper Info
Title
Characterisation of tremor in normophonic voices
Abstract
Vocal tremor is a low frequency instability of the voice that causes modulation of its amplitude and fundamental frequency. Among these two, frequency modulation is more relevant for perception and it has been shown to be present both in normophonic and dysphonic voices and to happen in similar frequency bands for both voice types. This paper presents a characterisation of the frequency modulating signal estimated for normophonic voices in terms of both its spectral characteristics and its statistical distribution. By using the discrete Fourier transform for data non-uniformly spaced in time domain, it is shown that the modulating signal may be either low-pass or band-pass (i.e. oscillating), though the low-pass case dominates in the analysed data. As for the values of the modulating signal, their distribution is shown to fairly fit a Gaussian distribution with a standard deviation that significantly depends on the average fundamental frequency.
Year
Venue
Keywords
2015
European Signal Processing Conference
Acoustic signal analysis,Biomedical acoustics,Frequency modulation,Speech analysis
Field
DocType
ISSN
Time domain,Frequency domain,Vocal tremor,Spectral density estimation,Fundamental frequency,Modulation,Speech recognition,Spectral density,Acoustics,Frequency modulation,Mathematics
Conference
2076-1465
Citations 
PageRank 
References 
0
0.34
0
Authors
4
Name
Order
Citations
PageRank
Rubén Fraile15211.93
Nicolás Sáenz-Lechón217317.21
Víctor Osma-Ruiz316417.26
Juana M. Gutiérrez-Arriola46011.46