Ear sketch(presentation)

CS4All Girls Presenter : Fatemeh Jamshidi. June 3-8
Computational Music Mixingwith
EarSketch: Engaging Students
With Python andMusic
CS4Allgirls
Fatemeh Jamshidi
fzj0007@auburn.edu
1/32

Who are we?
CS4All Girls Presenter : Fatemeh Jamshidi. June 3-8 2/32
N

Why Music andProgramming?
•A Philosophy of Music Education:Bennett
Reimer
Music allows humans to encode, refine,
reflect, and sharenon-verbal thought in a
dynamic moving systemthat changesover
time.
3CS4All Girls Presenter : Fatemeh Jamshidi. June 3-8 3/32

What isProgramming?
•Allows humans to encode, refine, reflect,and
share logical thought in adynamic moving
systemthat changesover time.
•Music and Programming (Computational
Thinking) are the sameHuman Skill
expressed in two different domains: non-
verbal feelings in art/music and logical /
motion thought in Programming or
Computational Thinking

Audiationis to musicas
ComputationalThinkingis to Computer
Science
Motion / Time / Flow
Thinking
Non-Verbal
Feelings:
Music
Thought:
Programming /
Computational
5
1/CS4All Girls Presenter : Fatemeh Jamshidi. June 3-8 5/32

Toput this another way...
Encodingthe
Non-Verbal
Encodingthe
Logic
KalmanFilterEine Kliene

Motivation
•Enhancingthe number of students
interested in computer science related
topics.
•In CS– we tend to focuson:
• Graphics / Games/ Visual
• TextProcessing/ Database
• Logic / Algorithmic / Mathematical
•EarSketchseeksto engagestudents in
CSthrough the art ofmusic.

Why Learn toProgram?

What isEarSketch?
•Online Programming and Music Mixing Workstation
-Used at
GeorgiaTech to teach Digital Music Mixing.
-Tool for
Programming
-Free!
-Webbased

Description ofEarSketch
•Programming Environment
•Python Based
•Web BasedApp or Installed Systemof
Software
•APIbuilt in Python for MusicMixing
•NSFFundedproject to encourage
computational interest through themixing
and sharing of music.
•Curriculum and SocialMedia Site

EarSketchWebsite: Web based IDEand DAW
CodingWindow: Programming
Music View: Display and Playback
Documentation
and CurriculumSoundLibrary
Toggle
Views

What isPython?
•General purpose Computer Programming
Language
•Web development: Googleand Yahoo
•GameDevelopment, Science, Graphics
•In Business:National Weather Service,NASA,
IBM, Disney,and Nokia
•Usedin Development of the GoogleCarand
other RoboticSystems

Sample EarSketchProgram
Comments
FinishSection
}
}Setup Section
} MusicSection
}
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Essential Elements we willuse inPython:
● Comments
# This is a comment – meant for Humans
● Includes – loading preset methods ordata
from earsketch import *
● Functions– telling the computer “what to do”
fitMedia(drums, 1, 1, 5)
● Variables and data types – Namesfor information
stored by program
Beat1 = “0+++0+++0+0+0+++”
● Tabs:Enclosecode in sections
● Lists:Groups variables into one datastructure

EarSketch PythonFunctions
EarSketch Function Description
init() Start new EarsketchMix
and clear the DAW
setTempo(120) Setsthe beats per minute
(speed) of the Mix
println(“Hello”) Prints messageto console

EarSketch Python Functions
Music MixingFunctions
fitMedia(file, track, start, end)
makeBeat(file, track, measure, beatString)
setEffect(track, effect, parameter, sV,
sM, eV, eM)
rhythmEffects(track, effect, parameter,
list, measure)

“fitMedia”Function
fitMedia(file, track, start, end)
Location of
Media
Sound
Which Track
in Reaper
Start
measure.
End Measure
Example:
fitMedia(HIP_HOP_DRUMS1_2M, 1, 1, 9)

Setting VolumeEffects
setEffect(track, VOLUME, GAIN, level, start,
level2, end)
• Example
setEffect(1, VOLUME, GAIN, -40, 1, 10, 5)

SelectedListof EffectsandParameters
Effect Parameter Min to MaxValues
VOLUME GAIN -60 to 12
DELAY DELAY_TIME 0 to 300.0
CHORUS CHORUS_LENGTH 1.0 to 15.0
CHORUS CHORUS_NUMVOICES 1.0 to 8.0
DISTORTION DISTO_GAIN 0.0 to 50.0
FILTER FILTER_FREQ 20.0 to 20000.0
PAN LEFT_RIGHT -100 to 100 (Left to
Right)
Complete Effect list at:
http://earsketch.gatech.edu/category/learning/reference/every-effect-explained

“makeBeat”Method
makeBeat(file, track, measure, BeatString)
Location of
Media
Sound
Which Track
in Reaper
What
measure.
Example: “0+++0+++0+0+0+++”
Example:
makeBeat(drums, 1, 1, “0+0+0+++00-00+++”)

Beat Stringnotation
1) “0, 1, 2, 3 . . . “ =Which Media Soundyou
want for the segmentof beat. Correspond
to placement in aList that is onebased.
2) Note: 0 will refer to asound if it is the
only media file in theargument.
3) “+”Means extend or loop the Media
sound 1/16th of a measure.
4) “-” Means 1/16th measure of rest.

“0+++0+++0+0+0+++”
1
makeBeat(ELEKTRO_HOUSE_DRUMS3_2M, 1, 1,
“0+++0+++0+0+0+++”)

“0+++0++00+0+0-00”
1
makeBeat(ELEKTRO_HOUSE_DRUMS3_2M, 1, 1, “0+++0++00+0+0-00”)

“0+++0+++0+0+0+++”
1
makeBeat(ELEKTRO_HOUSE_DRUMS3_2M, 1, 1, “0+++0+++0+0+0+++”)

“0-0-0-0-0-0-0-0-”
1
makeBeat(ELEKTRO_HOUSE_DRUMS3_2M, 1, 1, “0-0-0-0-0-0-0-0-”)

For Loops: Skip Counting
fillDrum = HIP_HOP_SYNTHDRUMS2_2M
beat = "0+++0+++0-000+00"
for measure in range(1, 9, 2):
makeBeat(fillDrum, 1, measure, beat)
measure is the “index variable” = assigned values from the
range()
(1, 9, 2) means start counting at 1,
end before 9 [meaning 8] and skip count by 2:
(1, 3, 5, 7)

Functions: RecycleandReuse!
Now I can use this section anywhere!
sectionA(1, 9)
sectionA(17, 25)

Creating aFunction
1. Definition:
2. Decide on Variables for Music
3. Write fitMedia() calls
4. Write any ForLoops
5. Set Effects

RhythmEffects

Exercises forClassroom
•Create EarSketchAccount
•Mix1: (ABSection Exercise)
•UsefitMedia and setEffect
•Music in sections
•Mix2: (makeBeat and For Loop Exercise)
•makeBeat
•For Loop Structure
•Mix3: (Defining Functions Exercise)
•Final Mix

Final Mix ProjectGoal
• Define Three Functions
• sectionA(start,end)
• sectionB(start,end)
• sectionC(start, end)
• Eachfunction will have at least 3 musicalclips
• At least one function will useafor loopand makeBeat
• At least one function will useeffects
• Call your functions to create amusicmix
• ABABCBB
• At least 64Measures

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