User Manual

6-42
Program Mode
The Amplitude Envelope (AMPENV) Page
The Amplitude Envelope (AMPENV) Page
Amplitude envelopes have three sections: attack, decay, and release. The attack section determines how
long each note takes to reach its assigned amplitude level after you trigger a Note On event. The decay
section determines how quickly and how much a sustained sound fades before a Note Off is triggered. The
release section determines how quickly a sound fades to silence after a Note Off is triggered.
Press the AMPENV soft button to reach the Amplitude Envelope page. For many programs, it will look
like the diagram below, which tells you that the amplitude envelope for the current layer is the sample’s
default “natural” envelope. Many factory ROM programs use the natural envelope, which is custom
designed for each sample and waveform during its original development process. A natural envelope
usually contains more detail than a user envelope, and may make samples of acoustic instruments sound
more realistic.
If you want to build your own amplitude envelope, just turn the Alpha Wheel a click. The value Natural
will change to User, and a set of AMPENV parameters will appear. The sound will change when you do
this, because the default settings for the User envelope, as shown in the diagram below, take effect as soon
as you leave Natural mode. Returning to Natural mode applies the original amplitude envelope once
again.
You’lltweaktheparametersontheAMPENVpagewhenyouwanttoshapetheamplitude
characteristicsofyoursounds.Agraphicviewofthe amplitudeenvelopewillappearonthe
displaytogiveyou
avisualsenseoftheenvelope’scharacteristics.Thedotsalongtheenvelope
graphicindicatethebreakpointsbetweentheenvelope’svarioussegments.
TheAMPENVpage’stopli negivesyoutheusuallocationreminder,pointsoutthecurrently
selectedlayer,andtellsyoutherelativescaleoftheenvelope’sgraphicview.The
envelope
graphicshrinksinscaleasthesegmenttimesgetlonger.Thisauto‐zoomfeaturemaximizesthe
availabledisplayspace.Trylengtheningoneofthesegmenttimes.Theenvelopegraphicwill
stretchtofillthedisplayfromlefttoright.Whenitfillsthedisplay,itwillshrinktohalfits
size,
andthetoplinewillindicatethatthescalehaschanged(from[1/1]to[1/2],for example).