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BPM check on line database

DavidH

22 Jan, 2012 04:47 AM via web

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Hi,

I downloaded the evaluation version ob deaTunes, and I'd like to add the BPM numbers to my iTunes library.

Can you please give me some insight on how the "use online resources" feature works? When I analyze all of the songs in my library, beaTunes appears to send data to online resources and then calculates the BPM data. Does it use the online info if available, or does it always use the calculated value? What on-line databases does beaTunes use?

Currently I don't have any BPM data in my library and I would like to get BPM numbers as accurate as possible. I'd appreciate any help!

Thanks,

David
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• beaTunes: 3.0.12
• JVM: Java HotSpot(TM) Server VM
• Version: 20.4-b02
• Vendor: Sun Microsystems Inc.
• OS: Windows Vista 6.0, x86
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1. Support Staff 2 Posted by hendrik on 23 Jan, 2012 02:36 PM

   

   Hi,

   use online resources works like this:

   • metadata about the songs you want to analyze is sent to a server
   • your songs are identified
   • if BPM is available for the identified songs, it is sent back to you
   • if received, the looked up BPM value is set
   • if not, the BPM value is calculated and then submitted to the server
   • submitted results are used to compute the reference BPM value. E.g. if 3 out of 4 BPM results are closely centered around a certain value, that value becomes the new reference value. (not quite like that, but it illustrates the principle)

   In most cases you will get the best results with beaTunes using the Rayshoot algorithm with the BPM range set to 70-140 and online resources turned off.

   -hendrik

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2. 3 Posted by Eric on 27 Jan, 2012 09:40 PM

   

   Why would the rayshoot algorithm be better than the online database?

   Is the database filled with unreliable information?

   Is the database more useful for other song data besides bpm?

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3. Support Staff 4 Posted by hendrik on 28 Jan, 2012 10:58 AM

   

   It's not necessarily better than the online database, but it lets you control what's happening better.

   The database is filled with data, that people either entered manually or computed with the Rayshoot algorithm.

   The most common BPM error is the factor 2. The "correct" value sometimes depends on perception. I.e. some people say a song is 70BPM, another person says it's 140BPM.

   Other values like Color or Key are less subjective.

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