On Thu, Jul 25, 2013 at 02:21:50PM -0400, Martin Cracauer wrote: > Does anybody know why wav files that do not have clipping would clip > when encoding them with lame? Because the peak sample value says nothing about the real level. Take a square wave with peak values +/-1. It is the sum of a number of sine waves, with frequencies 1,3,5,7,... times the frequency of the square wave. The first one has a peak value of about +/-1.27, that is +2 dB. So any encoding that looks at the spectrum (and mp3 does) will see a level that is +2 dB. If you really want to normalise on the peak level, use a lower one. If you want all your samples to have the same loudness, use RMS instead of peak, or a real loudness measurement such as provided by ebumeter. Ciao, -- FA A world of exhaustive, reliable metadata would be an utopia. It's also a pipe-dream, founded on self-delusion, nerd hubris and hysterically inflated market opportunities. (Cory Doctorow) _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
