scholarly journals Low-frequency broadband sound source localization using an adaptive normal mode back-propagation approach in a shallow-water ocean

2012 ◽  
Vol 131 (2) ◽  
pp. 1798-1813 ◽  
Author(s):  
Ying-Tsong Lin ◽  
Arthur E. Newhall ◽  
James F. Lynch
Keyword(s):  
Shallow Water ◽  
Normal Mode ◽  
Source Localization ◽  
Sound Source ◽  
Back Propagation ◽  
Low Frequency ◽  
Sound Source Localization ◽  
Broadband Sound

scholarly journals Interaural Level Difference Cues Determine Sound Source Localization by Single-Sided Deaf Patients Fit with a Cochlear Implant

2015 ◽  
Vol 20 (3) ◽  
pp. 183-188 ◽  
Author(s):  
Michael F. Dorman ◽  
Daniel Zeitler ◽  
Sarah J. Cook ◽  
Louise Loiselle ◽  
William A. Yost ◽  
...  
Keyword(s):  
Cochlear Implant ◽  
Source Localization ◽  
Sound Source ◽  
Low Frequency ◽  
Normal Hearing ◽  
Sound Source Localization ◽  
Interaural Level Difference ◽  
Relative Localization ◽  
Normal Limits ◽  
Single Sided Deafness

In this report, we used filtered noise bands to constrain listeners' access to interaural level differences (ILDs) and interaural time differences (ITDs) in a sound source localization task. The samples of interest were listeners with single-sided deafness (SSD) who had been fit with a cochlear implant in the deafened ear (SSD-CI). The comparison samples included listeners with normal hearing and bimodal hearing, i.e. with a cochlear implant in 1 ear and low-frequency acoustic hearing in the other ear. The results indicated that (i) sound source localization was better in the SSD-CI condition than in the SSD condition, (ii) SSD-CI patients rely on ILD cues for sound source localization, (iii) SSD-CI patients show functional localization abilities within 1-3 months after device activation and (iv) SSD-CI patients show better sound source localization than bimodal CI patients but, on average, poorer localization than normal-hearing listeners. One SSD-CI patient showed a level of localization within normal limits. We provide an account for the relative localization abilities of the groups by reference to the differences in access to ILD cues.

Shallow water sound source localization using the iterative beamforming method in an image framework

2017 ◽  
Vol 395 ◽  
pp. 354-370 ◽  
Author(s):  
Xun Wang ◽  
Shahram Khazaie ◽  
Luca Margheri ◽  
Pierre Sagaut
Keyword(s):  
Shallow Water ◽  
Source Localization ◽  
Sound Source ◽  
Sound Source Localization

scholarly journals A Polynomial Eigenvalue Decomposition Music Approach for Broadband Sound Source Localization

2021 ◽  
Author(s):  
Aidan O. T. Hogg ◽  
Vincent W. Neo ◽  
Stephan Weiss ◽  
Christine Evers ◽  
Patrick A. Naylor
Keyword(s):  
Source Localization ◽  
Sound Source ◽  
Eigenvalue Decomposition ◽  
Sound Source Localization ◽  
Broadband Sound

scholarly journals Sound Source Localization by Hearing Preservation Patients with and without Symmetrical Low-Frequency Acoustic Hearing

2015 ◽  
Vol 20 (3) ◽  
pp. 166-171 ◽  
Author(s):  
Louise H. Loiselle ◽  
Michael F. Dorman ◽  
William A. Yost ◽  
René H. Gifford
Keyword(s):  
Source Localization ◽  
Sound Source ◽  
Low Frequency ◽  
Hearing Preservation ◽  
Sound Source Localization ◽  
Localization Accuracy ◽  
Acoustic Hearing ◽  
Low Pass ◽  
Contralateral Ear ◽  
High Pass

The aim of this article was to study sound source localization by cochlear implant (CI) listeners with low-frequency (LF) acoustic hearing in both the operated ear and in the contralateral ear. Eight CI listeners had symmetrical LF acoustic hearing and 4 had asymmetrical LF acoustic hearing. The effects of two variables were assessed: (i) the symmetry of the LF thresholds in the two ears and (ii) the presence/absence of bilateral acoustic amplification. Stimuli consisted of low-pass, high-pass, and wideband noise bursts presented in the frontal horizontal plane. Localization accuracy was 23° of error for the symmetrical listeners and 76° of error for the asymmetrical listeners. The presence of a unilateral CI used in conjunction with bilateral LF acoustic hearing does not impair sound source localization accuracy, but amplification for acoustic hearing can be detrimental to sound source localization accuracy.

Sound-Source Localization in Range-Dependent Shallow-Water Environments Using a Four-Layer Model

2019 ◽  
Vol 44 (1) ◽  
pp. 220-228 ◽  
Author(s):  
Xun Wang ◽  
Shahram Khazaie ◽  
Dimitri Komatitsch ◽  
Pierre Sagaut
Keyword(s):  
Shallow Water ◽  
Source Localization ◽  
Sound Source ◽  
Sound Source Localization ◽  
Layer Model

scholarly journals Interior Sound Field Subjective Evaluation Based on the 3D Distribution of Sound Quality Objective Parameters and Sound Source Localization

Materials ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 429
Author(s):  
Jiangming Jin ◽  
Hao Cheng ◽  
Tianwei Xie ◽  
Huancai Lu
Keyword(s):  
Source Localization ◽  
Sound Source ◽  
Sound Pressure ◽  
Low Frequency ◽  
Sound Field ◽  
Sound Quality ◽  
Sound Source Localization ◽  
Frequency Noise ◽  
Sound Sources ◽  
Quality Objective

Controlling low frequency noise in an interior sound field is always a challenge in engineering, because it is hard to accurately localize the sound source. Spherical acoustic holography can reconstruct the 3D distributions of acoustic quantities in the interior sound field, and identify low-frequency sound sources, but the ultimate goal of controlling the interior noise is to improve the sound quality in the interior sound field. It is essential to know the contributions of sound sources to the sound quality objective parameters. This paper presents the mapping methodology from sound pressure to sound quality objective parameters, where sound quality objective parameters are calculated from sound pressure at each specific point. The 3D distributions of the loudness and sharpness are obtained by calculating each point in the entire interior sound field. The reconstruction errors of those quantities varying with reconstruction distance, sound frequency, and intersection angle are analyzed in numerical simulation for one- and two-monopole source sound fields. Verification experiments have been conducted in an anechoic chamber. Simulation and experimental results demonstrate that the sound source localization results based on 3D distributions of sound quality objective parameters are different from those based on sound pressure.

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