![]() This fits with earlier produced pop/rock CDs around the early-mid 1980s. In addition, peak values can be scanned with oversampling, which should give a better representation of the true-peak of the track when played through a DAC, but it takes longer to scan.įor foobar2000 the target playback loudness is -18 LUFS. Foobar2000 now uses the R128 algorithm to generate it's ReplayGain numbers, which are stored in just the same way as before. As time has gone on EBU-R128/ITU-BS.1770-# standards defined an algorithm for measuring loudness. ReplayGain used to be a specific bespoke algorithm for defining how loud a track/album was. Now, with the continuous development of foobar2000 and the communities around it things have got more complicated, but still roughly follow the above design. ![]() On playback the player should be able to adjust it's internal software volume control (hidden, not the ones you can adjust with your mouse) to apply the ReplayGain "gain" adjustment, with or without compensating that value for clipping (hence the stored ReplayGain "peak" value). There are 4 values stored, which are ReplayGain "Gain" and "Peak" for both the individual track and the album (or collection*). Just like title, artist, genre, date tags, ReplayGain would be stored there too. ReplayGain should be a meta data tag stored in the meta tag area of the file. Your original digital audio file's audio data is untouched and undamaged - and can be checked/proved/confirmed with a null test. I feel this is going be a long post.here goes! Varying levels of FLAC ‘compression’ (aka ‘data reduction’) have no audible consequences whatsoever. I tend to use the phrase “compression” to refer only to messing around with dynamics the other thing is “data reduction” which need not entail any change in the audio data. This achieves data size reduction by mathematical tricks that do not change the audio data at all. Do not confuse this with the totally benign data size reduction obtained by using FLAC or a similar format. messing about with the content's dynamics to achieve whatever result is deemed appropriate. NB when people use the word “compression” in this context they are referring to audio compression i.e. What you need to be confident of, is that accepting the option to calculate ReplayGain is only a passive calculation, not some dodgy DSP that changes the actual dynamics of your ripped file. This tag can later be altered or deleted should you so wish. As long as the option to calculate "ReplayGain" is only a calculation, all it will do is add an appropriate tag to the metadata that, subsequently, can be acted upon, or ignored, by the replay software.
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