OK so when I right click on an mp3 file and it says -9.80db what does it mean?
Why would it need to be quiter
...a random play through a music collection can have one leaping for the volume control every other track. There is a solution to this annoyance: within each audio file, information can be stored about what volume change would be required to play each track or album at a standard loudness, and players can use this "replay gain" information to automatically nudge the volume up or down as required.
You said "If the player knows about ReplayGain and RG correction is turned on then the first track will be 9.8dB quieter than the second" but what if there is only one track one there. Why would it need to be quiter or is that just how the track has been recorded?
I just want to clarify first of all that replaygain, if enabled on the player be it an ipod, cd player or windows media player on a computer, equalizes the volume of the tracks so you don't keeping adjusting the volume. Is this correct?Second, the volume is only adjusted i.e. -9.80db quiter if and only if replaygain is enabled on the audio player but if it's not, then the audio file or track will play in its original volume. Is this correct?
Although music is encoded to a digital format with a clearly defined maximum peak amplitude, and although most recordings are normalized to utilize this peak amplitude, not all recordings sound equally loud. This is because once this peak amplitude is reached, perceived loudness can be further increased through signal-processing techniques such as dynamic range compression and equalization. Therefore, the loudness of a given album has more to do with the year of issue or the whim of the producer than the intended emotional effect. Because of this, a random play through a music collection can have one leaping for the volume control every other track.There is a solution to this annoyance: within each audio file, information can be stored about what volume change would be required to play each track or album at a standard loudness, and players can use this "replay gain" information to automatically nudge the volume up or down as required.
Well it wouldn't be that hard for someone who understood the terms "maximum peak amplitude". I don't know what "peak amplitude" is.
Anyway I understand what replaygain is now but I would like to ask how they get the "reference level" for them to decided how loud an audio file should be. One mp3 file has -9.80db but why -9.0db? Why not something else? And can the replay gain be adjusted?
Does this mean the sound of the mp3 or quality of the mp3 has been distorted or changed?
if it has done somthing to the sound, different from the original, how would I restore it to its original sound?