Results 31 to 40 of about 143,092 (270)

Development of neural network database for biometric images based on several parameters of voice sound spectrum for authentication and authorization by voice

open access: yesБезопасность информационных технологий, 2019
This study focuses on the methods of biometric authentication and identification of network administrators by voice. The authors propose a method for presenting unique voice parameters, as well as the principle of constructing an artificial neural ...
Irina V. Mashkina, Yelena P. Belova
doaj   +1 more source

Jak badać samogłoski metodami akustycznymi?

open access: yesLingVaria, 2014
How to study vowels using acoustic methods? A proposal of a method based on relative formant frequencies and the cardinal vowels model The first part of the paper proposes a method of studying (or, more precisely, of recognizing) oral vowels, using ...
Piotr Rybka
doaj   +1 more source

Field Propagation Experiments of Male African Savanna Elephant Rumbles: A Focus on the Transmission of Formant Frequencies

open access: yesAnimals, 2018
African savanna elephants live in dynamic fission–fusion societies and exhibit a sophisticated vocal communication system. Their most frequent call-type is the ‘rumble’, with a fundamental frequency (which refers to the lowest vocal ...
Anton Baotic   +3 more
doaj   +1 more source

Low frequency groans indicate larger and more dominant fallow deer (Dama dama) males. [PDF]

open access: yesPLoS ONE, 2008
BACKGROUND: Models of honest advertisement predict that sexually selected calls should signal male quality. In most vertebrates, high quality males have larger body sizes that determine higher social status and in turn higher reproductive success ...
Elisabetta Vannoni, Alan G McElligott
doaj   +1 more source

Sound Visualization Demonstrates Velopharyngeal Coupling and Complex Spectral Variability in Asian Elephants

open access: yesAnimals, 2022
Sound production mechanisms set the parameter space available for transmitting biologically relevant information in vocal signals. Low–frequency rumbles play a crucial role in coordinating social interactions in elephants’ complex fission–fusion ...
Veronika C. Beeck   +3 more
doaj   +1 more source

Speech characteristics of monozygotic twins and a same-sex sibling: an acoustic case study of coarticulation patterns in read speech [PDF]

open access: yes, 2003
This case study reports on an acoustic investigation of the motor speech characteristics of a set of young adult male monozygotic (MZ) twins and compares them to those of an age- and sex-matched sibling who participated in the study 2 years later to ...
Rixon, E., Whiteside, S.P.
core   +1 more source

Extraction of vocal-tract system characteristics from speechsignals [PDF]

open access: yes, 1998
We propose methods to track natural variations in the characteristics of the vocal-tract system from speech signals. We are especially interested in the cases where these characteristics vary over time, as happens in dynamic sounds such as consonant ...
Veldhuis, Raymond N.J.   +1 more
core   +3 more sources

Reducing Audible Spectral Discontinuities [PDF]

open access: yes, 2001
In this paper, a common problem in diphone synthesis is discussed, viz., the occurrence of audible discontinuities at diphone boundaries. Informal observations show that spectral mismatch is most likely the cause of this phenomenon.We first set out to ...
Klabbers, Esther, Veldhuis, Raymond
core   +2 more sources

Neural Resolution of Formant Frequencies in the Primary Auditory Cortex of Rats.

open access: yesPLoS ONE, 2015
Pulse-resonance sounds play an important role in animal communication and auditory object recognition, yet very little is known about the cortical representation of this class of sounds.
Christian Honey, Jan Schnupp
doaj   +1 more source

Automated Heart Valve Disorder Detection Based on PDF Modeling of Formant Variation Pattern in PCG Signal

open access: yesIEEE Access, 2022
Heart valve disorder (HVD) analysis from heart sound is being well known for a long period of time, and use of digital stethoscope gives opportunity to diagnose HVDs from phonocardiographic (PCG) signal.
Monjur Morshed   +2 more
doaj   +1 more source

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