::  Posts  ::  RSS  ::  ◂◂RSS  ::  Contact

Free Raisins Over Time

May 19th, 2012
music, contra, experiment, free_raisins  [html]
I'm a big fan of recording yourself when you play so you can listen and improve. With the Free Raisins I record most of our dances and we often listen to them on the way home. It's especially helpful when you disagree about what went wrong somewhere: it's hard to fix if you don't know what the problem is.

I was recently listening to the recording from our first gig, nearly two years ago, and I thought "this doesn't sound that different". I was curious: have we improved over time? We've definitely gotten better at playing to the dancers, matching tunes and dances, communicating, dealing with problems, and running our own sound, but do we play better music now?

I decided to test this. I took 100 twenty second samples randomly from our recordings, level matched them with sox, and went through them in random order, giving them ranks on a scale from 1-10. Then I asked Julia to do the same. [1] I graphed them against time:

Jeff:

8/2010  9/2011  10/2011  11/2011  12/2011  12/2011  2/2012  2/2012  2/2012  2/2012  3/2012 
8 8 8 8
7 7 7 7 7 7 7 7 7 7 7 7 7
6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6
5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5
4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
3 3 3 3 3 3 3 3
2 2

Julia:

8/2010  9/2011  10/2011  11/2011  12/2011  12/2011  2/2012  2/2012  2/2012  2/2012  3/2012 
9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9
8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7
6 6 6 6 6
5 5

This is kind of disappointing: it looks like we've not improved much. Maybe a little, but nothing major. Or you could see it as positive: we were well prepared for our first gig and played well from the start!

Julia and I also disagreed a lot; 10% of the time our Z-Scores differed by more than two standard deviations. [2]


[1] The raw data:

Sample Date Jeff Jeff Z-Score Julia Julia Z-Score
20000 2011-12-11 8 2.24 8 0.19
20001 2011-12-11 5 -0.16 5 -3.62
20002 2011-10-11 6 0.64 7 -1.08
20003 2011-12-18 4 -0.96 7 -1.08
20004 2011-12-11 3 -1.76 8 0.19
20005 2011-11-12 6 0.64 8 0.19
20006 2011-10-11 3 -1.76 8 0.19
20007 2012-02-18 4 -0.96 8 0.19
20008 2011-09-24 5 -0.16 9 1.46
20009 2012-02-09 4 -0.96 9 1.46
20010 2011-11-12 7 1.44 7 -1.08
20011 2011-12-11 4 -0.96 7 -1.08
20012 2011-12-18 5 -0.16 8 0.19
20013 2012-02-18 5 -0.16 8 0.19
20014 2012-02-01 5 -0.16 8 0.19
20015 2010-08-13 6 0.64 9 1.46
20016 2011-12-11 5 -0.16 9 1.46
20017 2012-02-01 7 1.44 9 1.46
20018 2011-11-12 3 -1.76 9 1.46
20019 2011-12-18 5 -0.16 8 0.19
20020 2012-02-18 4 -0.96 8 0.19
20021 2012-03-10 7 1.44 8 0.19
20022 2012-02-18 6 0.64 7 -1.08
20023 2011-12-18 7 1.44 9 1.46
20024 2011-12-18 4 -0.96 7 -1.08
20025 2011-09-24 6 0.64 8 0.19
20026 2011-12-18 6 0.64 6 -2.35
20027 2012-03-10 5 -0.16 8 0.19
20028 2011-11-12 6 0.64 8 0.19
20029 2012-02-18 5 -0.16 8 0.19
20030 2012-02-04 8 2.24 8 0.19
20031 2012-02-09 4 -0.96 7 -1.08
20032 2012-02-01 3 -1.76 8 0.19
20033 2011-11-12 6 0.64 8 0.19
20034 2011-12-18 4 -0.96 7 -1.08
20035 2011-09-24 5 -0.16 9 1.46
20036 2011-12-11 7 1.44 9 1.46
20037 2011-09-24 3 -1.76 6 -2.35
20038 2012-02-09 6 0.64 8 0.19
20039 2012-02-01 4 -0.96 8 0.19
20040 2012-02-09 4 -0.96 7 -1.08
20041 2012-03-10 5 -0.16 8 0.19
20042 2012-03-10 5 -0.16 8 0.19
20043 2011-11-12 6 0.64 9 1.46
20044 2012-03-10 4 -0.96 8 0.19
20045 2011-11-12 5 -0.16 8 0.19
20046 2011-12-18 6 0.64 8 0.19
20047 2012-02-09 5 -0.16 8 0.19
20048 2011-09-24 5 -0.16 7 -1.08
20049 2011-11-12 6 0.64 7 -1.08
20050 2012-03-10 6 0.64 9 1.46
20051 2011-11-12 5 -0.16 7 -1.08
20052 2012-03-10 2 -2.56 7 -1.08
20053 2012-02-09 7 1.44 8 0.19
20054 2012-02-09 7 1.44 8 0.19
20055 2012-03-10 6 0.64 8 0.19
20056 2010-08-13 6 0.64 9 1.46
20057 2012-02-04 4 -0.96 6 -2.35
20058 2012-03-10 4 -0.96 8 0.19
20059 2011-12-11 7 1.44 8 0.19
20060 2011-12-11 5 -0.16 8 0.19
20061 2012-02-01 6 0.64 9 1.46
20062 2012-02-09 5 -0.16 8 0.19
20063 2012-02-04 4 -0.96 8 0.19
20064 2011-12-18 5 -0.16 8 0.19
20065 2012-02-18 7 1.44 8 0.19
20066 2011-11-12 7 1.44 9 1.46
20067 2012-02-18 4 -0.96 7 -1.08
20068 2012-03-10 6 0.64 8 0.19
20069 2011-09-24 5 -0.16 7 -1.08
20070 2012-02-09 7 1.44 8 0.19
20071 2011-12-11 6 0.64 9 1.46
20072 2012-02-18 6 0.64 8 0.19
20073 2011-09-24 3 -1.76 8 0.19
20074 2011-11-12 4 -0.96 7 -1.08
20075 2012-02-18 6 0.64 8 0.19
20076 2011-10-11 6 0.64 9 1.46
20077 2012-02-18 4 -0.96 8 0.19
20078 2012-02-09 5 -0.16 7 -1.08
20079 2011-11-12 4 -0.96 8 0.19
20080 2011-10-11 3 -1.76 7 -1.08
20081 2012-02-09 5 -0.16 7 -1.08
20082 2012-03-10 6 0.64 8 0.19
20083 2012-02-01 4 -0.96 8 0.19
20084 2012-02-18 4 -0.96 7 -1.08
20085 2012-02-18 5 -0.16 8 0.19
20086 2011-09-24 5 -0.16 8 0.19
20087 2011-11-12 4 -0.96 7 -1.08
20088 2011-12-11 6 0.64 6 -2.35
20089 2011-11-12 4 -0.96 7 -1.08
20090 2010-08-13 5 -0.16 8 0.19
20091 2012-02-09 6 0.64 8 0.19
20092 2011-12-18 4 -0.96 8 0.19
20093 2011-11-12 5 -0.16 9 1.46
20094 2011-10-11 7 1.44 8 0.19
20095 2012-02-04 8 2.24 8 0.19
20096 2011-12-18 6 0.64 8 0.19
20097 2011-12-11 5 -0.16 8 0.19
20098 2011-12-11 6 0.64 8 0.19
20099 2011-11-12 6 0.64 9 1.46

[2] Data sorted by the difference in our Z-Scores:

Sample Disagreement Jeff Jeff Z-Score Julia Julia Z-Score
20001 3.46 5 -0.16 5 -3.62
20018 3.22 3 -1.76 9 1.46
20026 2.99 6 0.64 6 -2.35
20088 2.99 6 0.64 6 -2.35
20010 2.52 7 1.44 7 -1.08
20009 2.42 4 -0.96 9 1.46
20095 2.05 8 2.24 8 0.19
20030 2.05 8 2.24 8 0.19
20000 2.05 8 2.24 8 0.19
20032 1.95 3 -1.76 8 0.19
20004 1.95 3 -1.76 8 0.19
20006 1.95 3 -1.76 8 0.19
20073 1.95 3 -1.76 8 0.19
20022 1.72 6 0.64 7 -1.08
20049 1.72 6 0.64 7 -1.08
20002 1.72 6 0.64 7 -1.08
20016 1.62 5 -0.16 9 1.46
20093 1.62 5 -0.16 9 1.46
20035 1.62 5 -0.16 9 1.46
20008 1.62 5 -0.16 9 1.46
20052 1.48 2 -2.56 7 -1.08
20057 1.39 4 -0.96 6 -2.35
20021 1.25 7 1.44 8 0.19
20065 1.25 7 1.44 8 0.19
20070 1.25 7 1.44 8 0.19
20054 1.25 7 1.44 8 0.19
20053 1.25 7 1.44 8 0.19
20059 1.25 7 1.44 8 0.19
20094 1.25 7 1.44 8 0.19
20058 1.15 4 -0.96 8 0.19
20044 1.15 4 -0.96 8 0.19
20077 1.15 4 -0.96 8 0.19
20020 1.15 4 -0.96 8 0.19
20007 1.15 4 -0.96 8 0.19
20063 1.15 4 -0.96 8 0.19
20083 1.15 4 -0.96 8 0.19
20039 1.15 4 -0.96 8 0.19
20092 1.15 4 -0.96 8 0.19
20079 1.15 4 -0.96 8 0.19
20081 0.92 5 -0.16 7 -1.08
20078 0.92 5 -0.16 7 -1.08
20051 0.92 5 -0.16 7 -1.08
20069 0.92 5 -0.16 7 -1.08
20048 0.92 5 -0.16 7 -1.08
20050 0.82 6 0.64 9 1.46
20061 0.82 6 0.64 9 1.46
20071 0.82 6 0.64 9 1.46
20099 0.82 6 0.64 9 1.46
20043 0.82 6 0.64 9 1.46
20076 0.82 6 0.64 9 1.46
20056 0.82 6 0.64 9 1.46
20015 0.82 6 0.64 9 1.46
20080 0.68 3 -1.76 7 -1.08
20037 0.59 3 -1.76 6 -2.35
20082 0.45 6 0.64 8 0.19
20068 0.45 6 0.64 8 0.19
20055 0.45 6 0.64 8 0.19
20075 0.45 6 0.64 8 0.19
20072 0.45 6 0.64 8 0.19
20091 0.45 6 0.64 8 0.19
20038 0.45 6 0.64 8 0.19
20096 0.45 6 0.64 8 0.19
20046 0.45 6 0.64 8 0.19
20098 0.45 6 0.64 8 0.19
20033 0.45 6 0.64 8 0.19
20028 0.45 6 0.64 8 0.19
20005 0.45 6 0.64 8 0.19
20025 0.45 6 0.64 8 0.19
20042 0.35 5 -0.16 8 0.19
20041 0.35 5 -0.16 8 0.19
20027 0.35 5 -0.16 8 0.19
20085 0.35 5 -0.16 8 0.19
20029 0.35 5 -0.16 8 0.19
20013 0.35 5 -0.16 8 0.19
20062 0.35 5 -0.16 8 0.19
20047 0.35 5 -0.16 8 0.19
20014 0.35 5 -0.16 8 0.19
20064 0.35 5 -0.16 8 0.19
20019 0.35 5 -0.16 8 0.19
20012 0.35 5 -0.16 8 0.19
20097 0.35 5 -0.16 8 0.19
20060 0.35 5 -0.16 8 0.19
20045 0.35 5 -0.16 8 0.19
20086 0.35 5 -0.16 8 0.19
20090 0.35 5 -0.16 8 0.19
20084 0.12 4 -0.96 7 -1.08
20067 0.12 4 -0.96 7 -1.08
20040 0.12 4 -0.96 7 -1.08
20031 0.12 4 -0.96 7 -1.08
20034 0.12 4 -0.96 7 -1.08
20024 0.12 4 -0.96 7 -1.08
20003 0.12 4 -0.96 7 -1.08
20011 0.12 4 -0.96 7 -1.08
20089 0.12 4 -0.96 7 -1.08
20087 0.12 4 -0.96 7 -1.08
20074 0.12 4 -0.96 7 -1.08
20017 0.02 7 1.44 9 1.46
20023 0.02 7 1.44 9 1.46
20036 0.02 7 1.44 9 1.46
20066 0.02 7 1.44 9 1.46

Comment via: google plus, facebook

More Posts:


  ::  Posts  ::  RSS  ::  ◂◂RSS  ::  Contact