Korg I30 Manuel utilisateur

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

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)

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