One of the reasons that people have favored the Rheem/Ruud heat pump water heaters is because they are quiet. Rated at a low 49 dB, you could install one in most places around the house and not notice ...

Decibels (dB) are a unit for measuring sound. Since sound reproduction is critical for the home theater experience, it's ...

Researchers have created a headphone prototype that allows listeners to hear people speaking within a bubble with a programmable radius of 3 to 6 feet. Voices and sounds outside the bubble are quieted ...