A recent research study found that low-frequency bass make people more likely to dance at a live music performance, even if they can’t actually hear the extremely low sounds. A recent research study ...

Mechanical resonance is a pervasive problem in servosystems. Most resonance problems are caused by compliance of powertransmission components. Standard servocontrol laws are structured for rigidly ...

Raman spectroscopy is an analytical technique that allows for the assessment of molecular structure and the identification of materials by examining the rotational and vibrational modes of molecules.

Barely perceptible low-frequency signals nevertheless activate measurable responses in our auditory circuits. Neurobiologists have now characterized the remarkable impact of low-frequency sounds on ...

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 ...

Sound has dimension, and it's sometimes easy to forget just how big sound can be. At 20 Hz we're talking about a 56.5-foot wavelength, calculated using 1130 feet per second as a typical value for the ...

If you want to talk about antennas, the amateur radio community has you covered, with one glaring exception. Very low frequency and Extremely Low Frequency radio isn’t practiced very much, ultimately ...

We all know how to block the DC offset of an AC signal — that just requires putting a capacitor in series, right? But what if the AC signal doesn’t alternate very often? In that case, things get a ...

Remember the last time you responded to a trench rescue? Never? For most of us, the answer is identical. Structural collapse? Confined space rescue? Wilderness search and rescue? As “all-hazards” ...