----- Original Message ----- From: Paul Davis Sent: 07/22/11 07:18 AM To: shane richards Subject: Re: 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@xxxxxxxxx www.josh.com.co www.shanerichardsmusic.com _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
