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Voice Acoustic Parameters as Predictors of Depression
Journal of VoiceTo 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 +3 more
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Acoustic metamaterial with negative parameter
SPIE Proceedings, 2014In 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, 2005Because 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, 1977Abstract 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
2006Doppler 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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Simulation of acoustical parameters of churches in a virtual acoustics laboratory
The Journal of the Acoustical Society of AmericaCurrent ISO standards for acoustical assessment limit the use of traditional mono-dimensional microphones for measuring equipment. However, microphone arrays offer more accurate spatial information compared to traditional microphones. This presents an opportunity to enhance research on architectural acoustics and preserve the acoustics of cultural ...
Gianluca Grazioli, Andrea Gozzi
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Evaluation of acoustic parameters of audiometers
The Journal of the Acoustical Society of America, 1980Investigations of the accuracy of audiometers sold in Canada were made by measuring their acoustic signals. Fourteen new audiometers were tested, all different models, consisting of 12 screening audiometers (including one automatic model) and 2 clinical audiometers.
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Acoustical Analysis and Physiological Parameters
1987Speech is produced by complex movements of the articulators, which are known to be extremely complex structures themselves. Moreover, many articulators are not accessible for direct observation of their behavior. Some articulators can be monitored in principle, but only by means of invasive recording techniques like photoglottography or hooked wire EMG
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