Results 261 to 270 of about 5,114,836 (310)

Acoustic Parameters Critical for an Appropriate Vibrato

Journal of Voice, 2012
A plethora of investigations have studied the acoustic characteristics of vibrato such as the rate, extent, onset (time from initiation of phonation until the first peak of vibrato), and periodicity. Despite extensive research, the degree to which various parameters of vibrato contribute to its acceptability remain unclear.The present study sought to ...
Supraja, Anand, Judith M, Wingate, Brenda, Smith, Rahul, Shrivastav   +3 more
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Nonlinearity acoustical parameter and its relation with Rao’s acoustical parameter of liquid state

The Journal of the Acoustical Society of America, 1983
Sound-speed properties of liquids are calculated in terms of the easily measurable parameters on the assumption that the isochoric temperature derivative of the sound speed is the dominant factor with significant contribution to influencing the thermo-acoustic properties. Using this simple model it is shown that Beyer’s parameter of nonlinearity, Rao’s
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The Effects of Aging on Acoustic Parameters of Voice

Folia Phoniatrica et Logopaedica, 2012
<b><i>Background/Aims:</i></b> There are no studies of the phonatory parameters of elderly Iranian speakers. The purpose of this study was to obtain normative acoustic data for a group of elderly Iranian male and female speakers over 70 years of age. Four selected acoustic parameters [fundamental frequency (F0), jitter, shimmer,
Ali, Dehqan, Ronald C, Scherer, Gholamali, Dashti, Alireza, Ansari-Moghaddam, Sepideh, Fanaie   +4 more
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Quantification of the Parameters of the Acoustic Reflex in Normal Ears

International Journal of Audiology, 1986
Measurement of the acoustic stapedial reflex parameters has proved to be a useful tool for evaluating the function of the acoustic-facial reflex. However, there is no agreement about the definitions of the parameters; moreover, most of the data have been obtained by manual measurement methods. The authors describe a computerized analytical method which
SELLARI FRANCESCHINI, STEFANO, BRUSCHINI, PAOLO, L. Pardini, BERRETTINI, STEFANO   +3 more
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Acoustic Parameters in Human Speaker Recognition

Language and Speech, 1990
Four speaker identification tests were conducted using five female speakers known to the listeners. Starting from acoustic recordings of reiterant “ma” syllables, the perceptual importance of the following three factors was investigated: F o height, F o
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Voice Acoustic Parameters as Predictors of Depression

Journal of Voice
To analyze whether voice acoustic parameters are discriminant and predictive in patients with and without depression.Observational case-control study. The following instruments were administered to the participants: Self-Reporting Questionnaire (SRQ-20), Beck Depression Inventory-Second Edition (BDI-II), Voice Symptom Scale (VoiSS) and voice collection
Wegina Jordana, Silva, Leonardo, Lopes, Melyssa Kellyane Cavalcanti, Galdino, Anna Alice, Almeida   +3 more
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Acoustic metamaterial with negative parameter

SPIE Proceedings, 2014
In this paper we present theoretical results on an acoustic metamaterial beam and a bar that exhibit negative effective mass and negative effective stiffness. A one-dimensional acoustic metamaterial with an array of spring-mass subsystems was fabricated.
Hongwei Sun, Fei Yan, Hao Gu, Ying Li
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Robust estimation of the acoustic attenuation parameter

ICASSP '87. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005
Because of the effect even additive Gaussian noise at the input has on the actual estimation of the attenuation parameter, Q, least squares estimation techniques make poor Q estimators. The errors in Q estimation may have a near Cauchy distribution. Maximum likelihood (ML) estimators based on Laplacian and Cauchy noise are derived and tested on various
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Acoustic emission parameters and their interpretation

NDT International, 1977
Abstract The need for improved methods of analysing acoustic emission signals and relating observed data to the original failure events is identified. The potential and limitations of current methods of frequency and amplitude analysis are discussed and some suggestions made.
D.E.W. Stone, P.F. Dingwall
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The Acoustic Parameters Measurement by the Doppler Scanning Acoustic Microscope

2006
Doppler continuous wave scanning acoustic microscope was developed for the investigation of the reflectance function at a frequency of 300 MHz. By testing aluminum, steel and fused quartz samples it was shown that the errors of the acoustic parameters estimation are: 9% for density, 7%, 2.5%, 1.4%- for longitudinal, shear and leaky Rayleigh waves ...
R. G. Maev, S. A. Titov
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