Volume Normalization
Since volume levels of different audio sources can vary greatly, due to the loudness war and other factors, it is sometimes desirable to adjust the playback volume of audio files such that a consistent average loudness is perceived. This normalization, while similar in purpose, is distinct from dynamic range compression.
ReplayGain is one standard for measuring and storing the loudness of an MP3 file in its metadata tag, enabling a ReplayGain-compliant player to automatically adjust the overall playback volume for each file. MP3Gain may be used to reversibly modify files based on ReplayGain measurements so that adjusted playback can be achieved on players without ReplayGain capability.
Read more about this topic: MP3
Famous quotes containing the word volume:
“A tattered copy of Johnson’s large Dictionary was a great delight to me, on account of the specimens of English versifications which I found in the Introduction. I learned them as if they were so many poems. I used to keep this old volume close to my pillow; and I amused myself when I awoke in the morning by reciting its jingling contrasts of iambic and trochaic and dactylic metre, and thinking what a charming occupation it must be to “make up” verses.”
—Lucy Larcom (1824–1893)