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WORKSHOP.md

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Workshop

This workshop is designed to go over the most commonly used patterns in composition with Orca. If you are using Pilot as a sound source, remember to use the UDP operator ; instead of the MIDI operator :.

We recommend to distribute a printed copy of the list of operators, so students can do their own experiments.

Basics

This section will teach the basics of playing a note and a sequence of notes.

Send a midi note

  • D8, will send a bang, every 8th frame.
  • :03C, will send the C note, on the 3rd octave, to send C#, use the lowercase c3.
D8...
.:03C

Play a random note

  • aRG, will output a random value between A & G, the rightside uppercase letter indicates an uppercase output.
D8.aRG.
.:03D..

Make a melody

  • 04TCAFE, will create a track of 4 notes, and output its first value.
D814TCAFE
.:03A....

Play the melody

  • 8C4, will count from 0 to 3, at 1/8th speed.
.8C4.....
D804TCAFE
.:03C....

Logic

This section will teach the basics of automating logic decisions and changing the values of operators dynamically.

Play every second note

  • 2I6, will increment to 6 at a rate of 2.
.2I6.......
D846TCAFEDG
.:03D......

Play a note with an offset

  • 1AC, will add 1 to C, to output D. To get D#, use the lowercase d, like 1Ac.
D8.1AC.
.:03D..

Play a sequence back and forth

  • 2B8, will count from 0 to 7, and back down to 0, at half speed.
  • 5AC, will increment the value so the sequence starts at the note C.
..2B8..
D2.5AC.
.:03H..

Play a note at a specific interval

  • .I4, will increment to 4, at a rate of 1.
  • .F2, will bang only if leftside input is equal to 2.
I4.....
3F2.1AC
..:03D.

Projectors

This section will teach the basics of creating new operators procedurally.

Send a bang

  • E, will travel further eastward, every frame.

Halt a moving operator

  • H, will stop a E from moving.
..H
E..

Read an operator at position

  • 22O, will get the operator E at the offset 2,2.
22O...
..E..H
.....E

Write an operator at position

  • 22X, will output the operator E at the offset 2,2.
22XE.
.....
.....
....E

Animate a projector

  • B8, will bounce between 0 and 8.
B4..........
1XE.........
........:03C
........:03D
........:03E
........:03F

Variables

This section will teach the basics of storing accessing and combining that stored data.

Write a variable

  • aV5, will store 5 in the variable a.
aV5

Read a variable

  • Va, will output the value of the variable a. Notice how variables always have to be written above where they are read.
.....Va
.......
aV5..Va
.....5.
.......
aV6..Va
.....6.

Read 3 variables

  • 3Kion, will output the values of i, o & n, side-by-side.
iV0.oV3.nVC
...........
3Kion......
.:03C......

Carry a value horizontally and vertically

  • Y, will output the west input, eastward.
  • J, will output the north input, southward.
3..
J..
3Y3

Carry a bang

  • This method will allow you to bring bangs into tight spots.
D43Ka...
.Y.:03C...

I hope this workshop has been enlightening, if you have questions or suggestions, please visit the forum, or the chatroom. Enjoy!