ABSTRACT
The ability of an audio system or component to reproduce the input signals at their original frequencies. In an amplifier, a uniform response is desired, one that does not favor or degrade any segment of the audio spectrum. When an amplifier emphasizes particular frequencies, the output signal is distorted. In specifications for an audio device,
frequency response is often stated in decibels (dB) for a specified segment of the audio spectrum, for example, plus or minus 3 dB from 20 Hz to 20 kHz.
