Results 11 to 20 of about 8,522 (72)

A Prognostic Approach to the Resonance Failure Problem by Triple Sensing Technology

open access: yesArchives of Acoustics, 2020
Within this study, resonance phenomenon, which is one of the crucial problems in mechanical constructions, has been analyzed with respect to oil starvation failure in a ball bearing.
Salih Seçkin EROL
doaj   +1 more source

Speech Reception Thresholds for Polish Language Word and Sentence Tests Presented in Noise

open access: yesArchives of Acoustics, 2018
The aim of the study was to determine the signal-to-noise ratio (SNR) for the Speech Reception Threshold (SRT) for young persons with normal hearing. The following three tests available for Polish language were used: the New Articulation Lists (NAL-93 ...
Anna SCHELENZ, Ewa SKRODZKA
doaj   +1 more source

Two-dimensional shape discrimination by sighted people using simulated virtual echoes [PDF]

open access: yesJASA Express Letters, 2021
In this study, a new research method using psychoacoustic experiments and acoustic simulations is proposed for human echolocation research. A shape discrimination experiment was conducted for sighted people using pitch-converted virtual echoes from ...
Yumi Fujitsuka   +6 more
doaj   +1 more source

An automated method for detecting F measurement jumps based on sample-to-sample differences [PDF]

open access: yesJASA Express Letters, 2022
An algorithm for detecting sudden jumps in measured F0, which are likely to be inaccurate measures, is introduced. The method computes sample-to-sample differences in F0 and, based on a user-defined threshold, determines whether a difference is larger ...
Jeremy Steffman, Jennifer Cole
doaj   +1 more source

Iterative adaptive frequency-domain equalization based on sliding window strategy over time-varying underwater acoustic channels [PDF]

open access: yesJASA Express Letters, 2021
This letter provides a novel iterative adaptive frequency-domain equalization for time-varying underwater acoustic (UWA) channels. The proposed scheme adopts a modified frequency-domain block least mean square algorithm to update the filter weights.
Lianyou Jing   +3 more
doaj   +1 more source

Multiplane deconvolution in underwater acoustics: Simultaneous estimations of source level and position [PDF]

open access: yesJASA Express Letters, 2021
In many acoustic imaging applications, conventional beamforming (CBF) cannot provide both accurate position and source level estimates simultaneously.
Maxime Polichetti   +3 more
doaj   +1 more source

Comparative Modelling Studies of 400 MHz ST-X Quartz SAW Delay Lines for Potential Gas Sensing Applications

open access: yesArchives of Acoustics, 2018
Surface Acoustic Wave (SAW) devices like delay lines, filters, resonators etc., are nowadays extensively used as principal solid state components in many electronic applications and chemical vapour sensors.
Venkatesan THIRUMAL   +3 more
doaj   +1 more source

Fuzzy clustering as a tool to differentiate between discrete and graded call types [PDF]

open access: yesJASA Express Letters, 2021
Animals may communicate potential information to conspecifics using stereotyped “discrete” calls and variable “graded” calls. However, animal vocal research often centers on identifying the number of call types in a repertoire rather than quantifying the
Dana A. Cusano   +2 more
doaj   +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

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