Saturday, September 8, 2012

Music Statistics as of Today

Well, I've been gathering BPM statistics about my music collection, and here's what I have.

NOTE: "Vocaloid" refers to Nico Nico Douga music in general; the name "Vocaloid" is vestigial.

Overall

ArtistBPM
Vocaloid2660Min.90.67
中島みゆき4801st Qu.96.60
aiko195Median101.33
平原綾香138Mean104.52
大塚愛1133rd Qu.109.96
菅野よう子80Max.184.57
(Other)1205 

These are some general statistics about my entire collection. The quartiles and so on are about overall BPM, not per-artist.

The following graphs show the frequencies of BPMs grouped into "buckets" of 5 BPM each. The second graph is a probability distribution of the BPMs, with the blue line representing a normal distribution and the red line representing a density distribution.

Major Artists

This is probably the most interesting plot: I took all artists in my collection who have at over ten tracks and created a boxplot comparing their BPMs:

More detail after the jump…

Vocaloid Statistics

StatValue
Min.90.67
1st Qu.97.51
Median104.40
Mean107.50
3rd Qu.113.60
Max.184.60

While I do have this category in the box plot above and among the histograms below, I also compiled some statistics about the "Vocaloid" part of my collection.

Per-Artist

For all of those artists, I did similar histagrams/density plots as I did for "Overall" above:

HistogramDensity
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