Exponential time average for sound measurements

[BertPeeters]

I am using a NI9234 and Measurement Studio Professional to measure noise levels with microphones. I would like to evaluate my signals using a exponentional moving average, as is done in standard sound level meters with a usual time constant of 0.125s (FAST) or 1s (SLOW).

Is such an exponential time weighting available in standard MS calculation functions? Or would I need to program my own time weighting?

[Hossein128]

Hi,

Thanks for your posting in this forum.

I think that you can look at the next link.

I hope it would be useful.

http://forums.ni.com/t5/Measurement-Studio-for-NET/Exponential-averaging-function-in-MS-8-1/m-p/9631...

Good luck,

Hossein

[Hossein128]

Hi,

Beside you can look at Fundamentals of Signals and Systems text book, Authors Edward W. Kamen and Bonnie S. Heck too.

Maybe it also will helps you.

Regards,

Hossein