Frequency response refers to the behavior of a system, device, or component in response to varying frequencies within a given range. It describes how effectively a system transmits, passes, or attenuates signals at different frequencies.
In audio systems, for instance, the frequency response measures the range of audible frequencies a speaker, amplifier, or headphone can reproduce. It illustrates the device’s ability to handle low, midrange, and high frequencies without distortion or attenuation.
In electronic circuits or filters, frequency response characterizes how the circuit or filter alters the amplitude and phase of input signals at different frequencies. It’s often graphically represented with a frequency response curve, showing the amplitude (gain) and phase shift of the output signal concerning the input signal across various frequencies.
For communication systems or antennas, frequency response shows the sensitivity or efficiency of the system at different frequencies. It indicates the range over which the system can effectively transmit or receive signals.
