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Opusmodus 3.0.28902 Update

opmo
in Announcements

Featured Replies

New function in 3.0.28902

 

rhythm-series num number-of-notes span &key length prob seed

 

This function returns a list of successive rhythmic series derived from a span (overall duration), length values, and a number of length-notes per bar. The length- notes within each bar are positioned at random.

 

Simple examples:

  

(rhythm-series 4 3 3/8)
=> ((-1/16 1/8 -1/16 1/16 1/16) (1/16 3/16 1/8)
    (1/8 3/16 1/16) (3/16 1/16 1/8))
    
(rhythm-series 4 5 3/8)
=> ((1/16 1/16 1/16 1/8 1/16) (-1/16 1/16 1/16 1/16 1/16 1/16)
    (1/16 1/16 1/16 -1/16 1/16 1/16) (1/16 1/16 1/16 1/16 -1/16 1/16))
    
(rhythm-series 4 3 1/4)
=> ((1/16 1/8 1/16) (1/16 1/16 1/8)
    (1/16 1/8 1/16) (1/16 1/8 1/16))

 

Examples with given length values:

  

(rhythm-series 4 3 1 :length '(q. e. s))
=> ((-1/4 1/16 1/16 1/16 -9/16) (1/8 3/16 -5/16 3/8)
    (1/16 3/16 -3/8 3/8) (3/16 -1/16 3/8 3/8))

(rhythm-series 6 5 3/8 :length '(q. e. e s 3q) :prob 0.1)
=> ((1/16 1/16 1/16 1/16 1/8) (1/8 1/16 1/16 1/16 1/16)
    (1/16 1/8 1/16 1/16 1/16) (1/16 1/8 1/16 1/16 1/16)
    (1/16 1/16 1/16 1/16 1/16 -1/16) (1/16 1/16 1/16 1/8 1/16))
    
(rhythm-series 6 5 3/8 :length '(q. e. e s 3q) :prob 0.9)
=> ((1/12 1/12 1/12 1/12 1/24) (1/24 1/12 1/12 1/12 1/12)
    (1/16 1/16 1/16 1/16 1/16 -1/16) (1/16 1/16 -1/16 1/16 1/16 1/16)
    (1/16 1/16 1/16 -1/16 1/16 1/16) (1/16 1/16 1/16 1/16 -1/16 1/16))

 

Example with list of unique values for each generated series:

  

(rhythm-series '(1 4 3 2)
               '(7 5 7 7)
               '(3/8 3/8 1/2 3/4)
               :prob '(.4 .6 .7 .1)
               :length '(q. e. e s 5q 3q)
               :seed 34)
=> ((1/20 1/20 1/20 1/20 1/20 1/20 1/40 -1/20)
    (1/24 1/12 1/12 1/12 1/12)
    (1/20 -1/20 1/20 -1/20 1/20 1/20 1/40 -1/20)
    (1/16 1/16 1/16 1/16 1/8)
    (1/16 1/16 1/8 1/16 1/16)
    (1/20 1/20 1/20 1/20 1/20 -1/20 1/20 -1/20 1/20 -1/20)
    (-1/20 -1/20 1/20 1/20 -1/20 1/20 1/20 1/20 1/20 1/20)
    (-1/20 1/20 -1/20 1/20 1/20 1/20 1/20 1/20 -1/20 1/20)
    (-1/16 1/16 1/16 1/16 -1/8 1/16 -1/16 1/16 1/16 1/16 -1/16)
    (1/12 -1/12 -1/12 1/12 1/12 1/12 1/12 1/12 1/12))

 

OMN example:

  

(make-omn :length (rhythm-series '(1 4 3 2)
                                 '(7 5 7 7) 1/2
                                 :prob '(.4 .6 .7 .1)
                                 :length '(q. e. e s)
                                 :seed 34)
 :pitch (gen-chord3 '((cs4 g4 a5) (c4 gs3 a4)
                      (b5 f5 gs5) (b4 fs4 bb5)
                      (cs5 c6 gs4) (e5 g3 a5))
                    '((6 8 11) (3 5 13) (2 7 11))))
Best wishes,
Janusz
    •
    https://opusmodus.com/forums/topic/2920-opusmodus-3028902-update/
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