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ARTURIA – JUPITER-8V – MANUAL - EN
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the sound as soon as a key is pressed and end it when released, as well as tune the oscillator to the
selected key.
Secondarily, the keyboard's pitch is also used to modulate other sources, such as filter cutoff.
If you do not use a MIDI keyboard, you can also play on the virtual keyboard of the Jupiter-8V, but your sequencer will not
record those actions, it is for auditioning presets and programming only.
7.2.2
The envelope generator or ADSR
If we stop here, the sound that you will obtain will be uniform, without life and without an end!!
The oscillator delivers a sound signal (the audio output of a waveform) of a fixed pitch in a
continuous manner. In the diagram above, the only ways to control this sound is to lower the filter
cut-off frequency so that it becomes more and more damp until it finally disappears; or simpler yet,
lower the volume of the amplifier.
The envelope generator, connected to the VCA, is used to «sculpt» the volume of the sound when
we press a key on the keyboard and ends after the note is released.
The most common modules developed use 4 settings that we can vary:
•
The
A
ttack is the sound that the sound will take to reach its maximum volume once we have
pressed a key on the keyboard.
•
The
D
ecay is the time that the sound will take to diminish after the attack portion is
complete.
•
The
S
ustain is the maximum volume level that the sound will reach after the decay is
complete.
•
The
R
elease is the time that the sound will take to diminish once the key has been released.
The ADSR Envelope
