scholarly journals Acoustic characteristics of confined jets. Part 1: Theory and numerical calculations

1989 ◽  
Vol 85 (S1) ◽  
pp. S104-S104
Author(s):  
Kam W. Ng ◽  
Peter R. Stepanishen
Keyword(s):  
Numerical Calculations ◽  
Acoustic Characteristics ◽  
Confined Jets

Acoustic characteristics of confined jets. Part 2: Measurements

1989 ◽  
Vol 85 (S1) ◽  
pp. S104-S104
Author(s):  
Kam W. Ng ◽  
Peter R. Stepanishen
Keyword(s):  
Acoustic Characteristics ◽  
Confined Jets

scholarly journals Acoustic Characteristics of Noise Absorbing Barriers

2020 ◽  
Vol 320 ◽  
pp. 00002
Author(s):  
Gleb Nazarov ◽  
Dmitry Nepryakhin ◽  
Alexandr Komkin
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Software Package ◽  
Numerical Calculations ◽  
Comsol Multiphysics ◽  
Acoustic Characteristics ◽  
Element Modeling ◽  
Noise Barrier ◽  
Absorbing Layer

The acoustic characteristics of the semi-infinite noise barrier were studied using finite element modeling in the COMSOL Multiphysics software package. The features of the finite element partition into the accuracy of the results are estimated. The results of numerical calculations of the acoustic efficiency of a barrier with and without a sound absorbing layer are presented. The influence on the acoustic efficiency of the noise barrier of the length and thickness of the sound absorbing layer is analyzed.

Prosodic Impairment Associated With Traumatic Brain Injury

2009 ◽  
Vol 19 (3) ◽  
pp. 97-102
Author(s):  
Billy Irwin
Keyword(s):  
Traumatic Brain Injury ◽  
Brain Injury ◽  
Detailed Analysis ◽  
Acoustic Characteristics ◽  
Individual Variations

Abstract Purpose: This article discusses impaired prosody production subsequent to traumatic brain injury (TBI). Prosody may affect naturalness and intelligibility of speech significantly, often for the long term, and TBI may result in a variety of impairments. Method: Intonation, rate, and stress production are discussed in terms of the perceptual, physiological, and acoustic characteristics associated with TBI. Results and Conclusions: All aspects of prosodic production are susceptible to the effects of damage resulting from TBI. There are commonly associated prosodic impairments; however, individual variations in specific aspects of prosody require detailed analysis.

Age-Related Decline in Emotional Prosody Discrimination

2014 ◽  
Vol 61 (3) ◽  
pp. 215-223 ◽  
Author(s):  
Rachel L. C. Mitchell ◽  
Rachel A. Kingston
Keyword(s):  
Older Adults ◽  
Auditory Perception ◽  
Duration Discrimination ◽  
Pitch Perception ◽  
Sensory Level ◽  
Emotional Prosody ◽  
Processing Stage ◽  
Acoustic Characteristics ◽  
Age Related ◽  
Level Of Processing

It is now accepted that older adults have difficulty recognizing prosodic emotion cues, but it is not clear at what processing stage this ability breaks down. We manipulated the acoustic characteristics of tones in pitch, amplitude, and duration discrimination tasks to assess whether impaired basic auditory perception coexisted with our previously demonstrated age-related prosodic emotion perception impairment. It was found that pitch perception was particularly impaired in older adults, and that it displayed the strongest correlation with prosodic emotion discrimination. We conclude that an important cause of age-related impairment in prosodic emotion comprehension exists at the fundamental sensory level of processing.

COMPARISON BETWEEN EXPERIMENTS AND NUMERICAL CALCULATIONS ON S = 1/2 HEISENBERG-XY FERROMAGNETIC CHAINS

1988 ◽  
Vol 49 (C8) ◽  
pp. C8-1451-C8-1452 ◽  
Author(s):  
K. Kopinga ◽  
J. Emmen ◽  
G. C. de Vries ◽  
L. F. Lemmens ◽  
G. Kamieniarz
Keyword(s):  
Numerical Calculations
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