LMS's clipping prevention considers two factors: the track peak and the amount of positive gain calcuated by ReplayGain. If those two add up to more than 0dBFS (or 1.0 on the ReplayGain scale), then LMS limits the gain to keep below that threshold.
LMS's clipping prevention doesn't consider any additional headroom you might create, for instance by lowering the volume on your Touch or other player. Foobar calculates ReplayGain for a target level of -18LUFS (roughly equivalent to -89dB). That's fine for contemporary pop, rock, R&B, hip-hop and jazz, even reissues of (say) 1960s jazz, because most of those will have negative RG values. For classical music, which will often need positive gain to reach -18LUFS (as much as 27.53dB, e.g. for Schoenberg's "Kleine Klavierstücke", with similar values for Webern, Debussy and Stravinsky), you have two options: You can either use a more conservative RG setting. The excellent 'loudgain' (https://github.com/Moonbase59/loudgain), for example, allows you to set the target level at -23LUFS, which would allow an additional 5dB or so in positive gain. (-23LUFS is from the original EBU R128 specification, while Foobar's -18LUFS is a compromise for the sake of compatibility with the old RG standard and modern consumer electronics, incl. mobile phones). Or you can switch off RG whenever you play classical music (and anything else with serious dynamics, for that matter). That's the approach I ended up with, partly because I don't have any classical playlists (I almost always play whole works), partly because I hesitate to apply -23LUFS attenuation in the digital domain, when I'll often have to compensate for that by turning up the analogue volume (i.e. I doubt it makes sense to first lower SNR only to then amplify the result), and partly because my amp comes with a handy sensitivity switch that adds 6dB in gain. Oh, and by the way, you may find peaks greater than 1 in FLAC files as well, especially when you use a ReplayGain scanner that aims to detect intersample "true peak" values. ------------------------------------------------------------------------ MainSqueeze's Profile: http://forums.slimdevices.com/member.php?userid=62220 View this thread: http://forums.slimdevices.com/showthread.php?t=112866
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