Evaluation of Remote Categorical Loudness Scaling

2021 ◽  
pp. 1-12
Author(s):  
Judy G. Kopun ◽  
McKenna Turner ◽  
Sara E. Harris ◽  
Aryn M. Kamerer ◽  
Stephen T. Neely ◽  
...  
Keyword(s):  
Home Environment ◽  
Ambient Noise ◽  
Preliminary Evidence ◽  
Laboratory Setting ◽  
Output Level ◽  
Noise Levels ◽  
Home Setting ◽  
Adult Participants ◽  
Loudness Scaling ◽  
Remote Setting

Purpose: The aims of this study were to (a) demonstrate the feasibility of administering categorical loudness scaling (CLS) tests in a remote setting, (b) assess the reliability of remote compared with laboratory CLS results, and (c) provide preliminary evidence of the validity of remote CLS testing. Method: CLS data from 21 adult participants collected in a home setting were compared to CLS data collected in a laboratory setting from previous studies. Five participants took part in studies in both settings. Precalibrated equipment was delivered to participants who performed headphone output level checks and measured ambient noise levels. After a practice run, CLS measurements were collected for two runs at 1 and 4 kHz. Results: Mean headphone output levels were within 1.5 dB of the target calibration level. Mean ambient noise levels were below the target level. Within-run variability was similar between the two settings, but across-run bias was smaller for data collected in the laboratory setting compared with the remote setting. Systematic differences in CLS functions were not observed for the five individuals who participated in both settings. Conclusions: This study demonstrated that precise stimulus levels can be delivered and background noise levels can be controlled in a home environment. Across-run bias for remote CLS was larger than for in-laboratory CLS, indicating that further work is needed to improve the reliability of CLS data collected in remote settings. Supplemental Material https://doi.org/10.23641/asha.17131856

Ambient Noise Levels in Nursing Homes

2000 ◽  
Vol 9 (1) ◽  
pp. 30-35 ◽  
Author(s):  
James E. Lankford ◽  
Catherine M. Hopkins
Keyword(s):  
Nursing Home ◽  
Nursing Homes ◽  
Home Environment ◽  
Ambient Noise ◽  
Bone Conduction ◽  
Test Results ◽  
Hearing Tests ◽  
Noise Levels ◽  
Insert Earphones ◽  
Air Conduction

Conducting hearing tests and hearing screenings in the nursing home environment can be a challenge. One issue which may affect the validity of the test results is the level of ambient noise in those facilities when a sound-treated booth is not available. This study sampled the ambient noise levels in ten different nursing homes and compared those results to the ANSI S3.1-1999 criteria for maximum permissible ambient noise levels. Based on the results of this investigation, the use of insert earphones for air conduction assessments is recommended when a sound-treated booth is unavailable and noise levels exceed the ANSI criteria. Other suggestions regarding air-conduction and bone-conduction assessments are discussed.

Comparisons of Auditory Brainstem Responses Between a Laboratory and Simulated Home Environment

2020 ◽  
Vol 63 (11) ◽  
pp. 3877-3892
Author(s):  
Ashley Parker ◽  
Candace Slack ◽  
Erika Skoe
Keyword(s):  
Home Environment ◽  
Signal To Noise Ratio ◽  
Auditory Brainstem ◽  
Auditory Brainstem Responses ◽  
Single Family ◽  
Adult Participants ◽  
Simulated Home Environment ◽  
Brainstem Response ◽  
Research Populations ◽  
Response Consistency

Purpose Miniaturization of digital technologies has created new opportunities for remote health care and neuroscientific fieldwork. The current study assesses comparisons between in-home auditory brainstem response (ABR) recordings and recordings obtained in a traditional lab setting. Method Click-evoked and speech-evoked ABRs were recorded in 12 normal-hearing, young adult participants over three test sessions in (a) a shielded sound booth within a research lab, (b) a simulated home environment, and (c) the research lab once more. The same single-family house was used for all home testing. Results Analyses of ABR latencies, a common clinical metric, showed high repeatability between the home and lab environments across both the click-evoked and speech-evoked ABRs. Like ABR latencies, response consistency and signal-to-noise ratio (SNR) were robust both in the lab and in the home and did not show significant differences between locations, although variability between the home and lab was higher than latencies, with two participants influencing this lower repeatability between locations. Response consistency and SNR also patterned together, with a trend for higher SNRs to pair with more consistent responses in both the home and lab environments. Conclusions Our findings demonstrate the feasibility of obtaining high-quality ABR recordings within a simulated home environment that closely approximate those recorded in a more traditional recording environment. This line of work may open doors to greater accessibility to underserved clinical and research populations.

Influence of Wind-produced Noise on Orientation in the Sole (Solea solea)

1994 ◽  
Vol 51 (6) ◽  
pp. 1258-1264 ◽  
Author(s):  
J. P. Lagardère ◽  
M. L. Bégout ◽  
J. Y. Lafaye ◽  
J. P. Villotte
Keyword(s):  
Spatial Distribution ◽  
Ambient Noise ◽  
Sound Intensity ◽  
Weather Conditions ◽  
Fish Populations ◽  
Positioning System ◽  
Noise Levels ◽  
Orientation Behaviour ◽  
Solea Solea ◽  
Swimming Trajectories

Sole (Solea solea), telemetered in an enclosure using an acoustic positioning system, changed their swimming trajectories and orientation behaviour as a function of wind strength and direction. Monitoring of the spatial variation in both wind-generated currents and noise spectra in the enclosure indicates that these behavioural changes correspond to patterns in the spatial distribution of noise and to sound intensity. Thus, our observations indicate that sole perceives and reacts to horizontal variability in ambient noise levels. Such behaviour may be important in determining movements of fish populations at sea during poor weather conditions.

S254 – Bone Conduction Noise Exposure via Ventilators in the NICU

2008 ◽  
Vol 139 (2_suppl) ◽  
pp. P160-P160
Author(s):  
Angela P Black ◽  
James D Sidman
Keyword(s):  
Ambient Noise ◽  
Noise Exposure ◽  
Bone Conduction ◽  
Sound Level ◽  
Noise Levels ◽  
High Noise ◽  
Endotracheal Tubes ◽  
Level Meter ◽  
Hearing Damage ◽  
Air Conduction

Objectives To demonstrate that neonatal ventilators produce high noise levels through bone conduction (BC) via endotracheal tubes, as well as air conduction (AC) from ambient noise. Methods A sound level meter was used to measure the noise levels 4 feet from the ventilator and in direct contact at the end of a balloon attached to the ETT to simulate the noise presented to the infant. 3 commonly used neonatal ventilators (Sensormedics 3100A, VIP Bird and Bunnell Jet) were examined. Results Noise levels were significantly higher (6 – 14 dB) at the end of the ETT than 4 ft from the ventilator for all ventilators studied. Conclusions Previous studies have shown high ambient noise levels in NICUs, but have failed to address the actual noise presented to the infant. ETT transmission of noise as a direct bone stimulus through the skull has been overlooked. This study has shown that high noise intensities are being presented not only as AC, but as BC to the infants though the ETT. This study demonstrates, therefore, that ear protection alone will not save these at-risk infants from hearing damage. More must be done to decrease noise exposure and develop quieter machines.

scholarly journals Ambient noise levels in audiometric test rooms

1993 ◽  
Vol 93 (4) ◽  
pp. 2406-2406
Author(s):  
Tom Frank ◽  
Dennis L. Williams
Keyword(s):  
Ambient Noise ◽  
Noise Levels ◽  
Audiometric Test

scholarly journals Ambient Noise Levels in Mobile Audiometric Testing Facilities: Compliance with Industry Standards

AAOHN Journal ◽  
1999 ◽  
Vol 47 (4) ◽  
pp. 163-167 ◽  
Author(s):  
James E. Lankford ◽  
Diane C. Perrone ◽  
Thomas D. Thunder
Keyword(s):  
Ambient Noise ◽  
Noise Levels ◽  
Industry Standards

scholarly journals MobiLab – A Mobile Laboratory for On-Site Listening Experiments in Virtual Acoustic Environments

2019 ◽  
Vol 105 (5) ◽  
pp. 875-887
Author(s):  
Florian Pausch ◽  
Janina Fels
Keyword(s):  
Ambient Noise ◽  
Low Frequency ◽  
Mobile Laboratory ◽  
Noise Levels ◽  
Acoustic Parameters ◽  
Research Areas ◽  
Test Conditions ◽  
Acoustic Environments ◽  
Study Participants ◽  
Insulation Performance

Virtual acoustic environments have demonstrated their versatility for conducting studies in various research areas as they allow easy manipulations of experimental test conditions or simulated acoustic scenes, while providing expansion possibilities to related interdisciplinary and multimodal fields. Although the evolution of auditory and cognitive models is consistently pursued, listening experiments are still considered the gold standard, usually necessitating a large amount of resources, including travel expenses of study participants. In order to facilitate practical and efficient study execution, we therefore implemented a mobile hearing laboratory by acoustically optimising the interior of a caravan. All necessary technical facilities were integrated to perform listening experiments in virtual acoustic environments under controlled conditions directly on site, for example, in front of schools or senior residential centers. The design and construction of this laboratory are presented and evaluated based on insulation properties, selected room acoustic parameters, and interior ambient noise levels that are to be expected during operation at representative test sites. Limitations, particularly in low-frequency insulation performance, should provide incentives for further optimisations in similar future projects.

Ambient Noise Levels in Industrial Audiometric Test Rooms

AIHAJ ◽  
1994 ◽  
Vol 55 (5) ◽  
pp. 433-437 ◽  
Author(s):  
Tom Frank ◽  
Dennis L. Williams
Keyword(s):  
Ambient Noise ◽  
Noise Levels ◽  
Audiometric Test
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