High fidelity or hi-fi refers to the reproduction of sound and image that is very faithful to the original. That is without noticeable amount of noise and distortion.
... 44, 23.9% from 45 to 64, and 6.9% who are 65 years of age or older. The median age is 34 years. For every 100 females there are 96.1 males. For every 100 females age 18 ...