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The frequency response is characterized by the magnitude, typically in decibels (dB) or as a generic amplitude of the dependent variable, and the phase, in radians or degrees, measured against frequency, in radian/s, Hertz (Hz) or as a fraction of the sampling frequency.
The chief electrical characteristic of a dynamic loudspeaker 's driver is its electrical impedance as a function of frequency. It can be visualized by plotting it as a graph, called the impedance curve.
A tweeter or treble speaker is a special type of loudspeaker (usually dome, inverse dome or horn-type) that is designed to produce high audio frequencies, typically deliver high frequencies up to 100 kHz.
Frequency response measurement. Frequency response measurements are only meaningful if shown as a graph, or specified in terms of ±3 dB limits (or other limits). A weakness of most quoted figures is a failure to state the maximum SPL available, especially at low frequencies.
A major problem of horn speakers is that the radiation pattern varies with frequency; high frequency sound tends to be emitted in narrow beams with poor off-axis performance. Significant improvements have been made, beginning with the "constant directivity" horn invented in 1975 by Don Keele.
Frequency response (FR) This measurement tells you over what frequency range output level for an audio component will remain reasonably constant (either within a specified decibel range, or no more than a certain number of dB from the amplitude at 1kHz).
exemplary frequency response (both in amplitude and phase) [citation needed] because the principle of generating force and pressure is almost free from resonances unlike the more common electrodynamic driver.
Frequency range and frequency response. The frequency response specification of a speaker describes the range of frequencies or musical tones a speaker can reproduce, measured in hertz (Hz). The typical frequency range for a subwoofer is between 20–200 Hz.
An audio frequency or audible frequency (AF) is a periodic vibration whose frequency is audible to the average human. The SI unit of frequency is the hertz (Hz). It is the property of sound that most determines pitch. The generally accepted standard hearing range for humans is 20 to 20,000 Hz.
In practical applications, they are most often used to improve low-end frequency response without increasing cabinet size, though at the expense of cost and weight. The name is derived from the term isobar ("equal pressure"), which comes from the Greek word "isobares", meaning "of equal weight".