frequency-response characteristic
An engineer analyzes the frequency-response characteristic on a test equipment display.
Noun: 1. (Electronics) A graphical representation of a system's frequency response: A curve or plot, typically on a graph, that shows how the amplitude (gain) or phase of a signal output by a system (e.g., an amplifier, filter, or speaker) varies as a function of the input signal's frequency. It is a fundamental characteristic used to analyze and describe the behavior of electronic circuits and acoustic systems.
The term is used in technical contexts, primarily in electronics, audio engineering, and signal processing, to specify and analyze the performance of a device across a range of frequencies. * The frequency-response characteristic of this audio amplifier shows a flat gain from 20 Hz to 20 kHz. * Engineers measured the frequency-response characteristic of the new filter design. * A loudspeaker's frequency-response characteristic reveals its bass and treble performance.
- The term is often shortened to frequency response in common technical parlance, though "characteristic" emphasizes it as a defining property.
- It can be qualified by the type of response, such as or .
- In quality assessment, a "flat" frequency-response characteristic (consistent output level across frequencies) is often desired for high-fidelity audio reproduction.
- Frequency response (n): The more common abbreviated term for the same concept.
- Bode plot (n): A specific type of graph showing the frequency response of a system, typically plotting both magnitude (gain) and phase shift on logarithmic scales.
- Transfer function (n): A mathematical representation of the relationship between input and output of a system, from which the frequency-response characteristic can be derived.
- Frequency response curve
- Gain-frequency plot
- Amplitude response curve
- To plot the frequency-response characteristic: To create the graphical representation.
- To measure the frequency-response characteristic: To determine the response through testing.
- A flat frequency-response characteristic: A response where the gain is nearly constant over a specified frequency range.
An engineer analyzes the frequency-response characteristic on a test equipment display.
- (electronics) a graph of frequency response with signal amplitude or gain plotted against frequency