22 Jul
2011
22 Jul
'11
7:08 p.m.
----- Original Message -----
From: Paul Davis
Sent: 07/22/11 07:18 AM
To: shane richards
Subject: Re: [LAU] question about normalize-audio
> * normalize the RMS volume of a group of samples
in general, "normalization" tends to refer
to operations on the actual
sample values, not an average computed number like RMS.
> * max value of the loudest peak in the group
doesn't exceed xxx db
if it doesn't do that, its not really
normalization.
> * no limiting/clipping/compression
normalization would never involved any of these 3
operations. if it
did, it would be called limiting or clipping or compression.
I'm commenting specifically on the "normalize-audio" program (I'm not
aware of anything else), which computes either by peak or RMS, but when computing by RMS
the fact that a peak may go over 0db is compensated for by limiting/clipping, instead of
changing the gain value for all samples to keep everything under a given limit. It seems
you can have one or the other, but not both.
In short, I want the "perceived loudness" values levelled without losing any
peaks, and without denormals being introduced.
are you asking about how to do this as a user (i.e.
"what tools are
available to let me do this?") or as a programmer/developer/tinkerer
(i.e "how would you go about doing this?")
As a user. 500+ drum samples to be converted into Hydrogen kits. So something scriptable
if you know of any.
Shane Richards
Producer, Composer, Multi-instrumentalist
Josh Music
shanerich(a)email.com
www.josh.com.co
www.shanerichardsmusic.com