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A Miniature, Fiber-Optic Vibrometer for Measuring Unintended Acoustic Output of Active Hearing Implants during Magnetic Resonance Imaging

Guy Fierens, Joris Walraevens, Ronald Peeters, Nicolas Verhaert, Christ Glorieux
2021 Sensors  
The presented case study therefore indicates a limited risk of audible unintended output for the examined hearing implant during MRI.  ...  The presented study offers a novel test method to quantify the risk of unintended output of acoustically stimulating hearing implants.  ...  Acknowledgments: The authors would like to thank Pieter Luyten and Iliana Claes for supporting the early work of the vibrometer validation and Valentijn Tuts for the support in designing the electronic  ... 
doi:10.3390/s21196589 pmid:34640909 fatcat:o2h6mjozxffkra2drly5arsucq

The role of spectral cues and minimum bandwidth in the auditory perception of distance

Ramiro Oscar Vergara Ferrari, Esteban Calcagno, Manuel C. Eguia
2010 Journal of the Acoustical Society of America  
The sensor is based on a fiber optic lever transduction mechanism with a remote photodiode optical readout allowing for isolation of the electronics from the harsh environment.  ...  Session 4aPP Psychological and Physiological Acoustics: Hearing Impairment, Hearing Aids, and Cochlear Implants A small group of cochlear implant users, having normal hearing in the unimplanted ear, compared  ... 
doi:10.1121/1.3508786 fatcat:wcm45muntjfybnrlv2hrxcjsgq

Trends in preference, programming and design of concert halls for symphonic music

Anders C. Gade
2008 Journal of the Acoustical Society of America  
Next, we explored brain activities correlated with the perceptual transitions using functional magnetic resonance imaging ͑fMRI͒.  ...  B-mode imaging was used to monitor any cavitation activity during sonication.  ...  To correctly handle polarizations of compressional-and shear-waves during imaging, we also develop a novel vector-imaging condition for elastic-wave reverse-time migration.  ... 
doi:10.1121/1.2932471 fatcat:hhka5ml2fvcszklkzau2lw3gka

The structural acoustic properties of stiffened shells

Yu Luan
2008 Journal of the Acoustical Society of America  
During the 1990s acoustic criteria for injury were designated based upon temporary hearing loss.  ...  International technical standard for field measurements of DL2 integrates new descriptive models for open plan office acoustics, taking into account geometric proportions, presence of screens and furniture  ...  Next, we explored brain activities correlated with the perceptual transitions using functional magnetic resonance imaging ͑fMRI͒.  ... 
doi:10.1121/1.2932806 fatcat:zohbewf2k5h7fly2hoqzfdk42e

Acoustic GIS‐based monitoring of Atlantic cod ecosystems in coastal Newfoundland

George A. Rose
2008 Journal of the Acoustical Society of America  
During the 1990s acoustic criteria for injury were designated based upon temporary hearing loss.  ...  International technical standard for field measurements of DL2 integrates new descriptive models for open plan office acoustics, taking into account geometric proportions, presence of screens and furniture  ...  Next, we explored brain activities correlated with the perceptual transitions using functional magnetic resonance imaging ͑fMRI͒.  ... 
doi:10.1121/1.2932540 fatcat:v6w3j7upx5duhkunch6oai5jve

Electroacoustical simulation of listening room acoustics for project ARCHIMEDES

Søren Bech
1989 Journal of the Acoustical Society of America  
Acoustical images of a submerged aluminum sphere. Char]cs F. Gaumond, Brian H.  ...  For the proposed experimental setup for the time-averaged DTI, a diffraction tomogram is exposed for a period of time by rotating the illuminating source around the object several times, during which the  ...  Fiber-optic sensors are also embedded to receive the acoustic wave fronts.  ... 
doi:10.1121/1.2027447 fatcat:7muohki2i5gktltdx2dhsiumze

Free‐field reciprocity calibration of laboratory standard (LS) microphones using a time selective technique

Knud Rasmussen, Salvador Barrera‐Figueroa
2006 Journal of the Acoustical Society of America  
Acknowledgment of Honolulu Local Meeting Organizing Committees Presentation of Fellowship Certificates  ...  On the other hand, for larger ⌬, the output activity is not a Poisson process.  ...  We found also that the output activity is NHPP for a relatively small coincidence window (⌬).  ... 
doi:10.1121/1.4788231 fatcat:o5zthkauwvddtjcer4wralkeja

Ultra‐high‐speed imaging of bubbles interacting with cells and tissue

Michel Versluis, Philippe Marmottant, Sascha Hilgenfeldt, Claus‐Dieter Ohl, Chien T. Chin, Annemieke van Wamel, Nico de Jong, Detlef Lohse
2006 Journal of the Acoustical Society of America  
Acknowledgment of Honolulu Local Meeting Organizing Committees Presentation of Fellowship Certificates  ...  On the other hand, for larger ⌬, the output activity is not a Poisson process.  ...  We found also that the output activity is NHPP for a relatively small coincidence window (⌬).  ... 
doi:10.1121/1.4788217 fatcat:5drbrqyk65cqzff2cmj5ne6n5e

Neural network modeling of a dolphin's sonar discrimination capabilities

Lars N. Andersen, A. René Rasmussen, Whitlow W. L. Au, Paul E. Nachtigall, Herbert Roitblat
1994 Journal of the Acoustical Society of America  
The sound field scattered by a smooth thin elastic shell immersed in fluid arises largely from specular reflection and acoustic-membrane coupling, unless both source and observer are located near or on  ...  A computer-controlled fiber optic stroboscope was used to capture the motion of a player's lips on video.  ...  However, the utilization of resonant type transducers for synthetic aperture imaging in air makes the measurement resolution poor.  ... 
doi:10.1121/1.410770 fatcat:ioiiov6bmjdi7kiflait5dhdfe

Neural network modeling of a dolphin's sonar discrimination capabilities

Whitlow W. L. Au, Lars N. Andersen, A. René Rasmussen, Herbert L. Roitblat, Paul E. Nachtigall
1995 Journal of the Acoustical Society of America  
The sound field scattered by a smooth thin elastic shell immersed in fluid arises largely from specular reflection and acoustic-membrane coupling, unless both source and observer are located near or on  ...  A computer-controlled fiber optic stroboscope was used to capture the motion of a player's lips on video.  ...  However, the utilization of resonant type transducers for synthetic aperture imaging in air makes the measurement resolution poor.  ... 
doi:10.1121/1.413700 pmid:7608403 fatcat:m3nunzs4wfflhfl27n4shdn2n4

Influence of statistical surface models on dynamic scattering of high‐frequency signals from the ocean surface

Christian Bjerrum‐Niese, Leif Bjo/rno/
1994 Journal of the Acoustical Society of America  
The sound field scattered by a smooth thin elastic shell immersed in fluid arises largely from specular reflection and acoustic-membrane coupling, unless both source and observer are located near or on  ...  A computer-controlled fiber optic stroboscope was used to capture the motion of a player's lips on video.  ...  However, the utilization of resonant type transducers for synthetic aperture imaging in air makes the measurement resolution poor.  ... 
doi:10.1121/1.411137 fatcat:ajwj7bozxzg6fd27v4xe57drgm