3 Mar
2011
3 Mar
'11
12:42 p.m.
On Thu, Mar 03, 2011 at 10:11:00AM +0100, Tim Blechmann wrote:
what is the preferred way to compute amplitude peak
and possibly rms peak and
average rms of a flac file?
sndfile-info doesn't seem to display these data for flac files, normalize-audio
and doesn't support flac at all.
At the next LAC I'll present an app that calculates
* true peak
* max momentary loudness
* max short-term loudness
* average loudness
* loudness range
for a file, all to the EBU R-128 standard.
Loudness is based on RMS after some filtering. I could add a switch
to bypass the filter and R-128 specific averaging (which is not just
averaging). But if you need the RMS values as a loudness estimate,
then the full R-128 algorithm will provide better results than
straight RMS.
It should handle any file that libsndfile can read, this includes FLAC.
First release in a month or so, ATM only the real-time version (jack
input, GUI) is finished.
Ciao,
--
FA