The Kyma Language for Sound Design, Version 4.5

Then, starting on beat 0, we play the events (after scaling all the !KeyVelocity values to one quarter of
their original values; look at the Pan to see how we have twisted the meaning of !KeyVelocity to really
control stereo placement):
(prime velScale: 0.25) playOnVoice: self onBeat: 0 bpm: 400.
On beat 11, we start up another copy of the TimedEventSequence, this one inverted about 3 a and placed
in the opposite channel:
((prime inv: 3 a) velScale: 0.75) playOnVoice: self onBeat: 11 bpm: 400.
TimedEventCollections Read from MIDI Files
You can also create a TimedEventCollection by reading in the events and starting beats from a MIDI file.
If you want to play exactly what’s in the MIDI file, it would be quicker and more straightforward to simply
select MIDI file as the Source in your MIDIVoice. However, once you have read the MIDI file into a
script you can transform it, twist it, distort it, in short, do all the kinds of things composers love to do!
For example, take a look at the Script for the Sound called transform events from MIDI file:
| pat |
pat :=
TimedEventCollection
timesAndEventsFromMIDIFile: 'omino.mid'
channel: 1.
(pat inv: 60 nn) playOnVoice: self onBeat: 5 bpm: 120.
(pat trsp: 31) retrograde playOnVoice: self bpm: 120.
In this script, pat is a TimedEventCollection whose start times and events are read from channel 1 of
MIDI file omino.mid. To hear the original MIDI file, select MIDI file as the Source, and play. Then select
Script as the Source and play again to hear the transformed file. Type the name of one of your own
MIDI files in place of omino.mid and try it again.
Generic EventCollections
In randomized times on event collection, you can see an example of a generic EventCollection, one that is
not yet ready to make a commitment to full seriality or simultaneity:
| pat pat2 pat1 |
pat :=
EventCollection events: (Array
with: (Note frequency: 3 d durationInBeats: 1)
with: (Note frequency: 3 f durationInBeats: 1)
with: (Note frequency: 3 a sharp durationInBeats: 1)
with: (Note frequency: 3 b sharp durationInBeats: 1)).
But the message randomizeUsing:totalBeats:quantizeTo:maxSpacing: changes the Event-
Collection into a TimedEventCollection by generating a set of random starting beats and randomly
picking a set of events from the events supplied. You specify the total duration of the result, the smallest
distance between beats (with quantizeTo:) and the longest time between beats (maxSpacing:):
pat1 :=
pat
randomizeUsing: (Random new seed: 92)
totalBeats: 16
quantizeTo: 0.5
maxSpacing: 1.
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