Subject:RMS Level Discrepancy

Posted by: sergiob

Date:2/16/2006 12:59:44 PM

I'm trying to find out the RMS level in a file and I'm getting two different results.
The Statistics (in the Tools menu) gives -15dB (17.5%) RMS and the Normalize (in the Process menu) gives me 12.2 dB RMS when I click on Scan Levels button.
Which is correct?
Thanks,
Sergio

Subject:RE: RMS Level Discrepancy

Reply by: mpd

Date:2/16/2006 1:27:43 PM

The Normalize process includes and option for flat versus equal loudness respones, and an option to ignore silence. Setting the response to flat, and the detect threshold to -infinity should give you the same value as Tools -> Statistics.

Subject:RE: RMS Level Discrepancy

Reply by: sergiob

Date:2/16/2006 2:14:45 PM

I coudn't find the option to ignore silence, but unchecking "use equal loudness contour" did the job.
Thanks a lot.
Serge

Subject:RE: RMS Level Discrepancy

Reply by: mpd

Date:2/16/2006 5:18:17 PM

Ignore silence isn't an option. Set the slider in the middle to a threshold of -Infinity to disable it.

Subject:RE: RMS Level Discrepancy

Reply by: Chilivonhaus

Date:2/16/2006 9:59:41 PM

So...which is more appropriate to use for setting playback levels ? Flat or equal loudness contour ?