### Can damping ratio calculation be done in DDP? how

Posted:

**Fri Nov 16, 2018 2:12 am**This is the same request as posted in "audio & acoustic test & measurement". This is may be a better place to post it.

Using DDP functions I would like to know if it is possible to have a set of derived data point to determine the damping ratio of a tap test on tone wood that has a fast decay and/or the logarithmic decrements of the diminishing amplitude of the pulse. The Y unit should be in audio dB. Usually the frequency is pretty low from 50 Hz to 500 Hz.

Another derived function I would be interested would be the Q factor defined as = center frequency divided by the (frequency after minus frequency before) when the amplitude is 3 dB below the center frequency in the spectrum analyzer.

I just got the full package software and there is a lot to learn to navigate all that can be done.

Any assistance will be welcome. Thank you

Using DDP functions I would like to know if it is possible to have a set of derived data point to determine the damping ratio of a tap test on tone wood that has a fast decay and/or the logarithmic decrements of the diminishing amplitude of the pulse. The Y unit should be in audio dB. Usually the frequency is pretty low from 50 Hz to 500 Hz.

Another derived function I would be interested would be the Q factor defined as = center frequency divided by the (frequency after minus frequency before) when the amplitude is 3 dB below the center frequency in the spectrum analyzer.

I just got the full package software and there is a lot to learn to navigate all that can be done.

Any assistance will be welcome. Thank you