> If I calculate a transition probability matrix, first order markov 12x12

> or second order 144x144 from musical pitch classes (0-11), is it possible

> to generate pitch class strings similar as those original strings using

> those probability matrix with R? If, how?

>

> Atte Tenkanen, Turku, Finland

>

I found this kind of solution:

j=1; a1=c();

Generated_Melody=c(1); #first note as a seed

a1=sample(1:12, size=1, prob=PT_matrix[j,]) # a seed for the loop following

for (i in 1:100){ # length of the generated melody will be 100

Generated_Melody=c(Generated_Melody,a1)

a1=sample(1:12, size=1, prob=PT_matrix[a1,])

}

# Generated_Melody=Generated_Melody-1; # to picht classes

# Generated_Melody=Generated_Melody+59; # or to midi pitches

Atte Tenkanen

PS. Here is my page considering the course in which we use R for music

analysis...

http://musiikintutkimus.blogspot.com/______________________________________________

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