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10 TB of music

 
Ranch Hand
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a radio station i listen to says they have 10 TB of music. how many songs do you think that is? i have no clue.
 
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Depends a lot on the sound quality.  This site gives you the approximate song size by quality.  So using 3.6mb as a typical high quality song and dividing that by 10TB:

   10TB divided by 3.6MB

And you get about 2.8 million songs. That isn't very much considering that Spotify has 30 million songs.
 
Randall Twede
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well, its just a local radio station
 
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What if the mp3 files are stored compressed? ;P
 
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My guess would be that mp3, just like video and some image formats, already uses compression internally, and nothing much would be gained by compressing it further.
 
Todor Kolev
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For each file - yes. I've rarely seen an MP3 file compress at all. But across thousands of files, you start seeing some space economies
I did this right now at home, got 3% off on 1000 files - that's actually a lot less than I expected, as mp3 compression itself will interpolate some different (but similar to the ear) sounds into the same sound, which would then lend itself well to compression via reference...

Maybe if I had more pop music in my sample, it would compress better, as all pop music is pretty much the same!
 
Randall Twede
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do radio stations really use MP3?
 
Tim Moores
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Something non-physical, to be sure. The days of CDs are over, for professionals certainly.
 
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How did it work back in the old days when somebody called the station and asked for a specific song? Before mp3s and even CDs?
 
Knute Snortum
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In the "old days," a DJ would have a vast record collection with which they were very familiar.  It was probably sorted too, by artist and genre.
 
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