Octave analysis averaging

[aaramburu]

Hello Everyone,

When the power spectrum of a signal is analysed signal express gives de oportunity of averaging the signal-->Averaging mode:RMS averaging, number of averages: X

Is it possible to average also the octave spectrum?

Regards

[TonyRe]

Hi Aarambaru,

Did you get answer to your problem? I have exactly the same problem. In Power Spectrum step there is an option to set number of averages but not in Octave Analysis.

Have you received any assistance from NI direct?

Regards, Tony

[J-Barticus]

Hi Tony,

In order to get a specific number of samples to average, the SignalExpress code could be configured to run for a specific number of iterations. For example, you could configure it to run for 10 iterations so the Octave Analysis step would only average 10 samples. This would also cause any other code in the SignalExpress project to only run 10 times, you would then have to restart the project/run. Note, that restarting/re-running the project will cause all steps to reset.

Another option would be to use the Conditional Repeat step in SignalExpress. We could place the Acquire and Octave Analysis in a Conditional Repeat step that will repeat until a certain number of iterations has passed. After those iterations passed the steps will reset thereby creating a new set of averaging. The number of iterations set would decide how many samples is averaged. You would have to have the "Reset steps when loop begins" option enabled in the Conditional Repeat step. Note, every step within the conditional repeat will be reset.

Jake B.