kxl359
Newbie level 3
Hi All,
I am working on a noise dosimeter design. The hard part is that I can only use analog circuit...
I got stuck in the time integrator part. My circuit went through amplifier, A-weighting filter, RMS, exponet, and threshold all using analog.
So, I can take out all the signal below 90db.
Now I don't know how to build (a noise dose indicator) 8-hour time integrator to add up all the noise larger than 90db using only analog circuit...
Any idea?
Thanks!!!
I am working on a noise dosimeter design. The hard part is that I can only use analog circuit...
I got stuck in the time integrator part. My circuit went through amplifier, A-weighting filter, RMS, exponet, and threshold all using analog.
So, I can take out all the signal below 90db.
Now I don't know how to build (a noise dose indicator) 8-hour time integrator to add up all the noise larger than 90db using only analog circuit...
Any idea?
Thanks!!!