Results 31 to 40 of about 112,430 (118)

Acoustic and Elastic Waves: Recent Trends in Science and Engineering [PDF]

open access: yes, 2017
The present Special Issue intends to explore new directions in the field of acoustics and ultrasonics. The interest includes, but is not limited to, the use of acoustic technology for condition monitoring of materials and structures.
Nathalie Godin (Ed.)   +1 more
core   +1 more source

A Study of Directional Patterns of Ultrasonic Parametric Array

open access: yesArchives of Acoustics, 2019
The paper presents results of numerical calculations and experimental data on the directional pattern of two 38-element parametric arrays composed of ultrasound sources.
Denis Sergeevich RAKOV   +5 more
doaj   +1 more source

Intelligibility of chimeric locally time-reversed speech: Relative contribution of four frequency bands [PDF]

open access: yesJASA Express Letters, 2021
Intelligibility of four-band speech stimuli was investigated (n = 18), such that only one of the frequency bands was preserved, whereas other bands were locally time-reversed (segment duration: 75–300 ms), or vice versa. Intelligibility was best retained
Kazuo Ueda, Ikuo Matsuo
doaj   +1 more source

On a Robust Descriptor of the Flue Organ Pipe Transient

open access: yesArchives of Acoustics, 2020
The initial transient of an organ pipe is known to be of great influence to the perceived sound quality. At the same time, the unsteady process of the tone onset is essentially nonlinear and lacks exact repeatability, so the search for a robust ...
Viktor HRUŠKA, Pavel DLASK
doaj   +1 more source

A Proposal Concerning Assessment of Alternative Cityscape Designs with Audiovisual Comfort and Health of Inhabitants

open access: yesArchives of Acoustics, 2023
The research concerning the future of sound in towns and cities is focused on two main issues: studies are conducted separately on the comfort, i.e., assessment of visual scenery and sound levels in a cityscape and separately, on the health protection ...
Agnieszka OZGA   +2 more
doaj   +1 more source

Effects of perceptual abilities and lexical knowledge on the phonetic categorization of second language speech [PDF]

open access: yesJASA Express Letters, 2021
This study examined how phonetic categorization in a second language (L2) is jointly affected by perceptual abilities and lexical knowledge. Adult L1 Mandarin Chinese and L1 English-L2 Mandarin learners performed a phonetic categorization task.
Seth Wiener, Jiang Liu
doaj   +1 more source

Computational determination of transition times using the measured mouthpiece pressure from soprano and bass clarinet players [PDF]

open access: yesJASA Express Letters, 2021
This study offers a metric to investigate transition times between articulated notes for reed instruments such as clarinets and bass clarinets. The method requires analysis of measurements of musician mouthpiece pressure.
Whitney L. Coyle   +3 more
doaj   +1 more source

Discriminant Analysis and Optimization Applied to Vibration Signals for the Quality Control of Rotary Compressors in the Production Line

open access: yesArchives of Acoustics, 2019
In this paper, the applications of the multivariate data analysis and optimization on vibration signals from compressors have been tested on the assembly line to identify nonconforming products.
Déborah Aparecida Souza dos REIS   +3 more
doaj   +1 more source

Transmission Perspective on the Mechanism of Coarse and Fine Crackle Sounds

open access: yesArchives of Acoustics, 2021
The possibility of a normal distribution indicates that few particles are in the same phase during a breath and their reflections can be observed on the chest wall, then a few explosive waves with relatively large power occurr occasionally.
Bing-Yuh LU   +2 more
doaj   +1 more source

Low-Frequency Noise Attenuation in a Closed Space Using Adaptive Directivity Control Sources of a Quadrupole Type

open access: yesArchives of Acoustics, 2019
A novel method of active noise control using adaptive radiation sound sources is investigated. A finite element model of a modal enclosed sound field is excited harmonically, representing a noise field in the low-frequency range.
Marios GIOUVANAKIS   +2 more
doaj   +1 more source

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