Also called a "frequency band." See frequency bands, spectrum, satellite frequency bands and optical bands. (2) A group of frequencies that occur naturally such as the audio spectrum. See audio.

These new POET headphones from Meze Audio incorporate Rinaro Isodynamic Hybrid Array technology with luxurious casing ...

Created with Sketch. For those who are suffering from depression, listening to music and/or binaural beats in the frequency range corresponding with alpha, theta, or delta brain waves can provide ...