ARP ODYSSEY - ADSR AND AR ENVELOPE GENERATOR

ADSR AND AR ENVELOPE
GENERATOR;
Each time d note is pressd on ihe
tieyboird, the
keyboard
qeneriates a '"uigger" ognat thai initiates an
attack from th^ ADSR. A oompl&te cycle
of
the
ENVELOPE GENERATOR (ooks
like this;
DECAV
t
"S"
StJSTAiN
>^
LEV
El
When
a key i^ depressed, the output of the ADSR uses dt
i
speed
dfiermined
by
the
setting
of
the "ATTACK*'
eontct^l. ThJE attick is repr«sflnLed above by the letttr
"A."
WhetJ
the
attack
has
reached its peak,
it
aulomaTkraily turns, i70und and begins htdding down
iqsia
at i f
*tt conitoUed
by
the "DECAY''
control.
This
pact of [hfl cycle ts^ represented &s the letter ''D." The
Output
of
the
AESR
EMVELOPE GENERATOR will
svemually r«ich the Sustain Level "S"
and $tiy
there
until
the keyboard
is
released.
Upon
release of the key^
the Ducput of the ADSR will drop
back
down (O zero at a
TAie detennined by the setting of
the Retiav Control.
This releatt part»n
gf
the cyclt
ii
represented by the
latter ''R."
The AR envelope generator is jusi
Hke the ADSR
generator
except
that
there
is
no
decay, so that the sustain
tflvel is the maKimurr
level.
This
gives
the same
effect
as
the ADSR
generator with the ''Decay" control at
n\lnimum md the "Sudaki'"
contioi
at
m^xjinun:).
A
complete cyul*
looks
like
this: