Something in the deep made a sound that echoed through the Pacific. It took 8 years to find the source.

In 1997, NOAA researchers recorded a mysterious ultra-low-frequency noise so powerful it registered on sensors thousands of ...

The Cloud Has Sound: The Unrelenting and Unseen Cost of A.I. Data Centers

As tech giants rush to build infrastructure, some residents who live near data centers say a constant low-frequency vibration ...
Nature

Reducing low-frequency noise radiation from a concrete box girder bridge using acoustic short circuits

Low-frequency noise (20–200 Hz) radiated from concrete box girder bridges on urban viaduct railway lines is a significant source of disturbance to nearby residents. Many researchers have investigated ...
Phys.org

Engineers design solutions to tackle low-frequency noise

Low frequency noise (500 Hertz and lower), which could stem from various sources such as construction machineries and aircrafts, is a form of environmental noise problem in urban environments. Such ...
Nature

Study on the aerodynamic performance and noise of windshield area in high-speed trains at a frequency of 38 hz

The noise level of a high-speed train is a crucial indicator of its operational quality. A significant low-frequency interior noise, referred to as ‘38 Hz’ in this context, has been detected during ...
Ars Technica

Low Frequency Noise coming from neighbour

I have a problem with low frequency noise coming from the party wall between me and my neighbour. It runs across all floors in my apartment and up through the bed and sofa, causing pain in my head ...
Electronic Design

Measuring High-Frequency Noise in Buck-Regulator Output-Voltage Ripple

Probe orientation and shielding can separate real buck-regulator output-voltage ripple from radiated switching noise.