Speech production can be regarded as a process where a time-varying vocal tract system
(filter) is excited by a time-varying excitation. In addition to its linguistic message, the speech …

Epochs are instants of significant excitation of the vocal tract system during production of
voiced speech. Existing methods for epoch extraction provide good results on neutral …

In this study, classification of the phonation modes in singing voice is carried out. Phonation
modes in singing voice can be described using four categories: breathy, neutral, flow and …

This paper presents a novel approach for the estimation of epochs from the emotional
speech signal. Epochs are the locations of significant excitation in the vocal tract during the …

The work presented in this paper explores the effectiveness of incorporating the excitation
source parameters such as strength of excitation and instantaneous fundamental frequency …

Existing studies in classification of phonation types in singing use voice source features and
Mel-frequency cepstral coefficients (MFCCs) showing poor performance due to high pitch in …

This paper focuses on the problem of estimating fundamental frequency from singing voice.
Estimation of fundamental frequency is a well studied topic in the speech research …

In production of voiced speech, epochs or glottal closure instants (GCIs) refer to the instants
of significant excitation of the vocal tract. Extraction of GCIs is used as a pre-processing …

The presence of hypernasality in repaired cleft palate (CP) speech is a consequence of
velopharyngeal insufficiency. The coupling of the nasal tract with the oral tract adds nasal …

Aperiodicity in the voice source is caused by changes in the vocal fold vibrations, other than
the normal quasi-periodicity and the turbulence at the glottis. The aperiodicity appears to be …