Scientists have made great strides toward understanding the mechanisms of speech production and perception. However, the complex relationships between the acoustic structures of speech and the resulting psychological percepts have yet to be fully and adequately explained, especially in speech produced by younger children. Thus, this study examined the acoustic structure of voiceless fricatives ...

Anisotropic wavefield tomography seeks to recover anisotropic parameters based on seismic wavefields. In terms of computational efficiency and degrees of freedom of the model parameters, the acoustic approximation to the anisotropic elastodynamics is more suitable than the full anisotropic elastic equations to the anisotropic tomography problem. We implement the wavefield tomography in VTI medi...

Introduction: Septal deviation is the chief cause of chronic nasal obstruction. In order to treat such cases, nasal septoplasty surgery is usually performed based on patient complaints and a surgeon's examination, both of which are subjective. This study aims at using the objective parameters of acoustic rhinometry and rhinomanometry to evaluate the effectiveness of septoplasty surgery.   Ma...

In this study the predictability of 15 discrete emotions (e.g. fear, uncertainty, rage, anger, sadness, love, tenderness, satisfaction, joy, sexual pleasure, surprise) and 6 bipolar emotional dimensions (feeling good/bad, strong/ weak, certain/uncertain, tense/relaxed, excited/calm, sympathetic/not sympathetic) by 39 acoustic parameters was tested by multiple regression analysis. The stimulus m...

This study investigates what acoustic parameters are relevant in terms of production and perception of focus in Turkish. Results from acoustic analyses shows that speakers do not expand on-focus pitch range but duration and intensity changed as a function of focus. Post-focus pitch is lowered in initial focus, but medial focus did not differ from neutral focus in any of the acoustic parameters....

BACKGROUND Speech acoustics. AIM To acoustically analyze the substitution between /t/ and /k/ in the speech production of children with typical and deviant acquisition process in order to identify and quantify the presence of covert contrast. METHOD The experiment involved the repetition of words that combined /t/ and /k/ with /a/ and /u/ in stressed position. Participants were 9 children d...

Most of vocal and voice diseases cause changes in the voice. These diseases have to be diagnosed and treated during an early stage. There is an increased risk for vocal and voice diseases due to the modern way of life. Acoustic voice analysis is an effective and non-invasive tool due to: a) Objective support of the diagnostics. b) Screening the vocal and voice diseases and especially their earl...

This paper presents an analysis of acoustic pattern registration for a new means of human computer interaction. It discusses the relationship between variations in correlation coefficients and signal pattern registration parameters including signal sampling rates, amplitude digitisation resolutions and recorded signal lengths. Experimental results have confirmed that the accuracy of acoustic pa...

Learning has been traditionally thought to accelerate the evolutionary change of behavioural traits. We evaluated the evolutionary rate of learned vocalizations and the interplay of morphology and ecology in the evolution of these signals. We examined contact calls of 51 species of Neotropical parrots from the tribe Arini. Parrots are ideal subjects due to their wide range of body sizes and hab...