A new livecoding composition using Extempore and Ableton Live: 'Rhythmic Cycles'.
The gist of this experiment rotates around the map
function.
A seed list of notes, and one of offsets , is used to generate musical play
sequences:
(map (lambda (x y z)
(onbeat x 0 (play y z (* dur .9) 1))
)
times
notes
volumes
)
This technique generates a texture of sounds with a touch of randomness.
If the pattern above gets repeated, changing the input parameters periodically leads to the generation of very interesting musical patterns.
For example:
The end result reminds me of a hypnotical tune that keeps repeating but it's never exactly the same. Similar to 8-bit video game music patterns, but obviously when using more interesting sounds/instruments to begin with, the end result is more engaging too.
The full source code can be found on Github.
(define notes (list c3 g3 bb3))
(define times (:mklist 8 (oneof 1/2 1/4)))
(define inc
(lambda (alist)
(map (lambda (x)
(if (< x 1)
(ifr .7 (add 1/4 x) x) 0)
)
alist)
))
(define lp1
(lambda (beat)
(let ((dur 1/16)
(v1 (cosr (cosr 50 18 1/64) 30 1/64))
(v2 (cosr (cosr 50 18 1/150) 30 1/40))
(fc 8))
(println v1 v2)
(onbeat 4 0
(set! times (inc times)))
(onbeat 32 0
(if (< v1 40)
(set! notes (rotate notes -1))))
(map (lambda (x y z)
(onbeat x 0 (play y z (* dur .9) 1))
(onbeat x 0 (play y z (* dur .9) 3))
)
(slice fc times)
(slice fc (:mkchord (car notes) '-6 8))
(slice fc (list v1 v2 v1 v2 v1 v2 v1 v2))
)
(callback (*metro* (+ beat (* 1/2 dur)))
'lp1 (+ beat dur)))))
(lp1 (*metro* 'get-beat 1))
Cite this blog post:
2021
2020
2017
paper Data integration and disintegration: Managing Springer Nature SciGraph with SHACL and OWL
Industry Track, International Semantic Web Conference (ISWC-17), Vienna, Austria, Oct 2017.
paper Fitting Personal Interpretation with the Semantic Web: lessons learned from Pliny
Digital Humanities Quarterly, Jan 2017. Volume 11 Number 1
2015
2013
paper Fitting Personal Interpretations with the Semantic Web
Digital Humanities 2013, University of Nebraska–Lincoln, Jul 2013.
2012
2011
2010
2009
2007
paper PhiloSURFical: browse Wittgensteinʼs Tractatus with the Semantic Web
Wittgenstein and the Philosophy of Information - Proceedings of the 30th International Ludwig Wittgenstein Symposium, Kirchberg, Austria, Aug 2007. pp. 319-335