frequency response


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frequency response

[′frē·kwən·sē ri‚späns]
(engineering)
A measure of the effectiveness with which a circuit, device, or system transmits the different frequencies applied to it; it is a phasor whose magnitude is the ratio of the magnitude of the output signal to that of a sine-wave input, and whose phase is that of the output with respect to the input. Also known as amplitude-frequency response; sine-wave response.

frequency response

In an audio system, the accuracy of sound reproduction. A totally flat response means that there is no increase or decrease in volume level across the frequency range. Measured in decibels (dB), this would be plus or minus 0 dB from 20Hz to 20,000Hz. A high-end audio system can deviate by +/- 0.5 dB, but a CD-ROM drive should not be off by more than +/- 3 dB.
References in periodicals archive ?
Acoustic design: Closed | Weight: N/A | Cable length: 4.6 feet | Frequency response: 16-22,000Hz | Drivers: N/A | Driver type: Dynamic | Sensitivity: N/A | Impedance: 28 ohms | Battery life: 25+ hours | Wireless range: 30+ feet | NFC: Yes
It is shown that the calculation of the IDFT for lowpass equivalent responses of passband frequency response measurements is obtained by two equivalent algorithms, which are denoted by Eqs.
Thambiratnam, "Frequency response function based damage identification using principal component analysis and pattern recognition technique," Engineering Structures, vol.
In 20-100 Hz full frequency range, the acoustic characteristic curve to a great extent retains peak frequency features of conventional FEM frequency response result.
4 shows the amplitude frequency response curve of the system with optimum values of absorber parameters for the viscoelastic and elastic blade respectively.
The complex frequency response of such ideal line connected between the source of oscillations with internal impedance [Z.sub.S] = [Z.sub.L] is calculated by the formula
Let us split the model frequency response in two parts, the (unknown) generic kth harmonic oscillator and the (unknown) residual part [W.sub.res], as follows:
Figure 3 describes the magnitude of the frequency response in case of rectangular window as a function of its width K.
Figure 11 shows the simulated frequency response of the broadband band-pass filter designed using a MMR resonator in the workspace of ADS versus return losses (S11) and insertion losses ([S.sub.21]) in a range of 0-16 GHz.
The received signal vector y and the channel frequency response vector h are provided as input to the four receiver processing blocks (RPB) along with precomputed data vectors [d.sup.(1)], [d.sup.(2)], [d.sup.(3)], and [d.sup.(4)].
The on-line FRA method has been implemented through an Impulse Frequency Response Analysis (IFRA).

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