How to estimate the frequency at certain time of linear sine sweep?

1. How do you calculate sweep time?
2. What is sweep rate of 1 octave per minute?
3. What is frequency sweep in vibration?
4. What is logarithmic frequency sweep?

How do you calculate sweep time?

Sweep time = k(span)/RBW2, where k = constant of proportionality. Notice that when the RBW filter is reduced by a factor of 10, the sweep time goes up by a factor of 100 due to the squaring of the RBW filter value. Selecting the optimum RBW filter is clearly critical for fast measurements.

What is sweep rate of 1 octave per minute?

Rate & Duration

The number of octaves is then used to set the sweep rate, assuming a logarithmic rate. For example, the rate might be specified as 1 octave/minute. The duration for 7.64 octaves would thus be: 7 minutes 38 seconds. The excitation frequency at any time can then be calculated from this rate.

What is frequency sweep in vibration?

Sweep and Sweep Cycles: A sweep is defined as a traverse from one frequency to another. A sweep cycle varies from one frequency to another and then back to the staring frequency. For instance in Figure 2, a sweep could be a traverse from either 5 to 500 Hz or from 500 to 5 Hz.

What is logarithmic frequency sweep?

A logarithmic sweep spends more time at the lower frequencies and spends equal time within each octave. This is why there is a predictable, steady/constant rate of roll-off over the measured frequency range.