2014
DOI: 10.1016/j.csl.2014.03.003
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Abstract: The great majority of current voice technology applications rely on acoustic features, such as the widely used MFCC or LP parameters, which characterize the vocal tract response. Nonetheless, the major source of excitation, namely the glottal flow, is expected to convey useful complementary information. The glottal flow is the airflow passing through the vocal folds at the glottis. Unfortunately, glottal flow analysis from speech recordings requires specific and complex processing operations, which explains wh… Show more

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Cited by 99 publications
(69 citation statements)
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References 132 publications
(144 reference statements)
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“…Speech excitation usually refers to the glottal flow signal. The glottal flow has been already shown to be useful in various speech processing applications [14,13]. However these works were conducted in relatively well-controlled situations in which the detrimental effects of the noise are quite limited.…”
Section: Robust Excitation-based Featuresmentioning
confidence: 99%
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“…Speech excitation usually refers to the glottal flow signal. The glottal flow has been already shown to be useful in various speech processing applications [14,13]. However these works were conducted in relatively well-controlled situations in which the detrimental effects of the noise are quite limited.…”
Section: Robust Excitation-based Featuresmentioning
confidence: 99%
“…According to the mechanism of voice production, speech is considered as the result of a glottal flow (also called source or excitation signal) filtered by the vocal tract cavities [13]. This led to the well-known source-filter model which motivates the present study: source and filter features reflect different physiological characteristics of speech.…”
Section: Robust Excitation-based Featuresmentioning
confidence: 99%
See 1 more Smart Citation
“…It should be noted that the GCI t e is defined as the instant of significant excitation of the vocal tract [48], i.e. the instant of the negative peak of the GFD, while t c is the instant at which the glottal flow reaches zero level.…”
Section: Problem Formulationmentioning
confidence: 99%
“…More importantly, as outlined by the source-filter theory, the radiated sound is a convolution of the sound generated within the larynx and the frequency-dependent filtering effects of the vocal tract. Consequently, it is challenging to isolate the individual contributions of these two voice subsystems (Drugman et al, 2014), particularly when the recording has not been made in a sound-treated room devoid of background noise. Finally, the radiated acoustic sound is only the end product of the sound generation process.…”
Section: Introductionmentioning
confidence: 99%