SpiderJon wrote: > To quote from the ReplayGain specification > > "Psychoacoustically coded audio, such as MP3, does not exist as a > sequence of samples until it is decoded. Psychoacoustic coding of a > heavily limited file can lead to sample values larger than digital full > scale upon decoding. The coded files must be decoded using a fully > compliant decoder that allows peak overflows (i.e. has headroom) and may > result in peak amplitude values greater than 1.0." > > Last para of 'Peak Amplitude' section at > http://wiki.hydrogenaud.io/index.php?title=ReplayGain_specification#Peak_amplitude >
Bingo! Foobar2000 only generated peaks > 1.0 on mp3 files and not FLAC files which is what you would expect if this were correct. SpiderJon wrote: > > The "Clipping prevention" section of the RG standard -may -be relevant > here. (Apologies if it's not!) > > http://wiki.hydrogenaud.io/index.php?title=ReplayGain_specification#Clipping_prevention It says that it recommends 14dB headroom which sounds sensible. 14dB is also well within the extra 8 bits resolution the SB3's 24bit DAC gives you so there shouldn't be any loss in audio quality. But the problem is I don't know how to get LMS 7.9.2 to do this? It doesn't seem to have any headroom at the moment as tracks with a peak of 1.0 and a Gain > 0.0 don't seem to have their volume increased at all. Any idea how to do this? SB3 -> Quad 909 -> Quad Electrostatic speakers, Quad 405 -> TBI subwoofer 3 x SB3s + SB Radio LMS on Raspbian on a Pi4 Rotel RSP1068 surround processor, Quad 99 -> B&W surround ------------------------------------------------------------------------ rbl's Profile: http://forums.slimdevices.com/member.php?userid=4517 View this thread: http://forums.slimdevices.com/showthread.php?t=112866 _______________________________________________ Squeezecenter mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/squeezecenter
