Re: How does an RMS detector work?

On May 30, 2:34 pm, MRW <mr.whate...@xxxxxxxxx> wrote:
I'm currently delving into audio stuff. I was wondering how exactly
does an RMS detector work. I can picture how a peak detector works,
but if you send a speech signal to an RMS detector, how does it
compute the RMS value?

Also, does attack time dictate the time period for RMS calculations?

A really great and thorough response to your question is in Analog
Devices' "RMS-to-DC Application Guide", Second Edition. It's
available in .pdf format at this page:
http://www.analog.com/en/content/0,2886,773%255F866%255F15010,00.html

The whole thing is over 10MB in .zip file format. Most of your answer
will be in secion 1: theory:
http://www.analog.com/UploadedFiles/Associated_Docs/17505283758302176206322RMStoDC_Cover-Section-I.pdf

Take some time, and read it. You'll definitely learn the answer to
your question, as well as a lot of other stuff. It's presented in the
old Analogue Dialogue method, so even students and newbies can get a
lot out of it.

Good luck
Chris

.

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