Is low frequency sound level uniformly increasing on a global scale?

2014 ◽  
Vol 135 (4) ◽  
pp. 2306-2306
Author(s):  
Jennifer L. Miksis-Olds
Keyword(s):  
Low Frequency ◽  
Global Scale ◽  
Sound Level ◽  
Frequency Sound

Incubator Noise

PEDIATRICS ◽  
1975 ◽  
Vol 56 (4) ◽  
pp. 617-617
Author(s):  
Gōsta Blennow ◽  
Nils W. Svenningsen ◽  
Bengt Almquist
Keyword(s):  
Low Frequency ◽  
Sound Level ◽  
Noise Levels ◽  
Frequency Sound ◽  
Mechanical Noise ◽  
Sound Levels ◽  
Infant Incubator ◽  
Improved Model ◽  
Model C

Recently we reported results from studies of incubator noise levels.1 It was found that in certain types of incubators the noise was considerable, and attention was called to the sound level in the construction of new incubators. Recently we had the opportunity to study an improved model of Isolette Infant Incubator Model C-86 where the mechanical noise from the electrically powered motor has been partially eliminated. With this modification it has been possible to lower the low-frequency sound levels to a certain degree in comparison to the levels registered in our study.

scholarly journals Low-frequency sound level in the Southern Indian Ocean

2015 ◽  
Vol 138 (6) ◽  
pp. 3439-3446 ◽  
Author(s):  
Eve Tsang-Hin-Sun ◽  
Jean-Yves Royer ◽  
Emmanuelle C. Leroy
Keyword(s):  
Indian Ocean ◽  
Low Frequency ◽  
Sound Level ◽  
Southern Indian Ocean ◽  
Frequency Sound

scholarly journals Analysis of low frequency sound level radiating from bridge by means of beam theory.

1985 ◽  
pp. 527-536
Author(s):  
Toshiyuki OSHIMA ◽  
Sumio NOMACHI ◽  
Yoshihiro TSUKIDA ◽  
Shuichi MIKAMI
Keyword(s):  
Low Frequency ◽  
Beam Theory ◽  
Sound Level ◽  
Frequency Sound

scholarly journals Study on broadband low-frequency sound insulation of multi-channel resonator acoustic metamaterials

AIP Advances ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 045321
Author(s):  
Chi Xu ◽  
Hui Guo ◽  
Yinghang Chen ◽  
Xiaori Dong ◽  
Hongling Ye ◽  
...  
Keyword(s):  
Low Frequency ◽  
Sound Insulation ◽  
Acoustic Metamaterials ◽  
Frequency Sound

Lightweight Low‐Frequency Sound‐Absorbing Composites of Graphene Network Reinforced by Honeycomb Structure

2021 ◽  
pp. 2100183
Author(s):  
Fan Xu ◽  
Siying Zhang ◽  
Guigen Wang ◽  
Daqiang Zhao ◽  
Junwei Feng ◽  
...  
Keyword(s):  
Low Frequency ◽  
Honeycomb Structure ◽  
Frequency Sound
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