Korg i30 User manual

LESSON 004
Envelope (i33)
The envelope lets you change how the sounds from your Synth Kit begin and end. The beginning of
a sound is called the attack, and the end is called decay. The attack and decay can be very sudden or
very gradual. Changing these values will let you create many different sounds with your Synth Kit.
Set your keyboard’s key mode to hold. This will make exploration of the envelope module easier.
Start with both envelope knobs turned all the way down (left/counterclockwise) and then turn the
decay knob up just a bit. Playing the keyboard should produce short, staccato tones. That’s because
the sounds are beginning and ending suddenly. Now take some time to explore the different sounds
you can create by changing the envelope module’s controls.
An Envelope of Sound.
Can you create sounds like these instruments?
Bells Piano Clarinet ViolinBanjo Tuba
Octave - to choose between four octaves
Key Mode - to choose whether the sound stops when you let go of a button
Buttons - to create different pitches similar to a piano
Tune dial - to match other instruments exactly
Pitch Knob - to make higher and lower sounds
Square/Saw - to choose between two kinds of sound
Attack - to choose how sudden or gradual the beginning of the sound is
Decay - to choose how sudden or gradual the end of the sound is
Volume - to make the sound louder and softer
Volume
Square
/Saw
Attack DecayPitch
Knob
Tune
Dial
Octave
Key Mode
Battery / p1 Power i33 Envelopei31 Oscillatori30 Keyboard 024 Speaker

LESSON 004
Envelope (i33)
Replace the Oscillator with the random module set to “noise.”
1. Using one of the percussion sounds you created, tap a beat while a partner or your teacher
sings a song, performs a rap, or reads a poem.
2. Trade jobs and do the song, rap, or poem again.
What percussive sounds can you make?
Share what you’ve learned:

ANSWER KEY
Envelope (i33)
Keyboard Octave: All the way counterclockwise.
Set the key mode switch to hold.
Oscillator Pitch: All the way clockwise.
PITCH
OCTAVE
Bells
Oscillator Waveform: Set the switch to square.
Envelope Attack – Sudden: Turn all the way counterclockwise.
Decay – Long: Turn all the way clockwise.
ATTACK
ATTACK
ATTACK
DECAY
DECAY
DECAY
Electric Piano
Oscillator Waveform: Set the switch to square.
Envelope Attack – Softened: Turn not quite all the way counter
clockwise.
Decay – Shortened: Turn not quite all the way
clockwise.
Banjo
Oscillator Waveform: Set the switch to saw.
Envelope Attack – Sudden: Turn all the way counterclockwise.
Decay – Turn slightly clockwise of halfway.
Clarinet
Oscillator Pitch: Turn not quite all the way clockwise.
Waveform: Set the switch to square.
Envelope Attack – Softened: Turn not quite all the way counter
clockwise.
Decay – Shortened: Turn not quite all the way
clockwise.
PITCH ATTACK
DECAY

Violin
Oscillator Pitch: Turn all the way clockwise.
Oscillator Waveform: Set the switch to saw.
Attack Turn just clockwise of halfway.
Decay Turn to between all the way clockwise and halfway.
Tuba
Oscillator Pitch: Lowered a good bit from the highest pitch
(go lower until you can hear some “rumble” sound,
but not so low that the pitch becomes indistinct).
Oscillator Waveform: Set the switch to square.
Attack Softened: Turn not quite all the way counterclockwise.
Decay Shortened: Turn not quite all the way clockwise.
Note: The tuba sound becomes similar to a trombone, bass clari-
net, and clarinet as you move the octave selector clockwise.
PITCH ATTACK
DECAY
PITCH ATTACK
DECAY
ANSWER KEY
Envelope (i33)