Low‐Frequency, Wide‐Band Hydrophone Input‐Circuit Noise Analysis

1962 ◽  
Vol 34 (12) ◽  
pp. 1998-1998
Author(s):  
Charles B. Durgin
Keyword(s):  
Noise Analysis ◽  
Low Frequency ◽  
Wide Band ◽  
Input Circuit ◽  
Circuit Noise

Low-frequency wide-band hybrid energy harvester based on piezoelectric and triboelectric mechanism

2013 ◽  
Vol 56 (8) ◽  
pp. 1835-1841 ◽  
Author(s):  
MengDi Han ◽  
XiaoSheng Zhang ◽  
Wen Liu ◽  
XuMing Sun ◽  
XuHua Peng ◽  
...  
Keyword(s):  
Energy Harvester ◽  
Low Frequency ◽  
Wide Band ◽  
Hybrid Energy ◽  
Hybrid Energy Harvester

Low-frequency noise analysis of Si/SiGe channel pMOSFETs

2002 ◽  
Vol 46 (12) ◽  
pp. 2281-2285 ◽  
Author(s):  
P.W Li ◽  
W.M Liao
Keyword(s):  
Noise Analysis ◽  
Low Frequency ◽  
Frequency Noise ◽  
Low Frequency Noise

Exposure to industrial noise: impacts on cognitive performance

2021 ◽  
Vol 263 (4) ◽  
pp. 2590-2600
Author(s):  
Luiz Henrique Mesa Casa Pereira ◽  
Björn Knöfel ◽  
Jan Troge ◽  
Welf-Guntram Drossel ◽  
Marcel Klein ◽  
...  
Keyword(s):  
Cognitive Performance ◽  
Noise Analysis ◽  
Low Frequency ◽  
Cumulative Effect ◽  
Noise Sources ◽  
Industrial Noise ◽  
Sound Levels ◽  
Office Environments ◽  
High Sound ◽  
High Frequency Content

Research on the relation between exposure to noise and cognitive performance inside industrial environments is not as broad as on office environments. For a better understanding of the specific industrial noise problems, participants performed arithmetic tests inside a hemi anechoic room while they were exposed to sounds of five typical industrial noise sources. The subjects also classified how annoying they perceived the noise signals. The effect of noise on the arithmetic test's performance was larger on accuracy than on velocity, which was verified using a Student t-test. Spectral-temporal characteristics - especially high frequency content and strong low frequency modulation - appear to relate better with lower performance on the test than high sound levels. Subjects that evaluated noise as more annoying performed worse in a final arithmetic test (under silence) after being exposed to the noises, indicating a possible cumulative effect of noise on performance. The findings provide a better insight in the cognitive behavior of people who are exposed to industrial noise. Hence, the study will proceed with the specific noise analysis of single industrial workplaces.

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