Working With Filters - E-Mu PX-7 Owner's Manual

Working with Filters

Move the cursor to the first field in the bottom line and use the cursor
4.
buttons to advance to the Release pages.
Increase the Release 1 and 2 times. Note the effect as you release the key
5.
on the controller. The Release stages controls the time it takes for the
sound to die away when a note is released.
To Setup the Volume Envelope as an ADSR
The classic synthesizer ADSR (Attack-Decay-Sustain-Release) envelope is
easy to create using the PX-7 six segment envelope generators. The trick is
to only use segments: Attack1, Decay2, and Release1.
Set Atk1, Atk2 & Dcy1 levels to 100.
1.
Set Rls1 & Rls2 levels to 0.
2.
Set Atk2, Dcy1 and Rls2 rates to 0.
3.
Program the Atk1, Dcy2 and Rls1 segments as you wish. Decay 2 level is
4.
your Sustain level.
level
time
Key
Down
The filters make it possible to remove certain components of the sound. A
low pass filter removes the high frequency components or put another way,
it "lets the low frequencies pass." A high-pass filter removes the low
frequency components from the sound letting only the high frequencies
pass. See "PX-7 Filter Types" on page 219 for a complete list of PX-7's filters
and their descriptions.
In preparation for the next tutorial, select "zzz:blank" preset. (Select the
Preset Category and spin the data entry control all the way to the left).
Go to the Instrument screen (Preset Edit menu) and select Instrument
1.
#132 - wav:Worm 3. This is a harmonically rich sound. Since filters
work by removing or accentuating certain frequencies, we want to
make sure that we have a lot of frequencies to start with.
Advance to the Filter Type screen using the data entry control. Select
1.
the Classic 4th order filter.
Used
Atk1
Dcy2
Rls1
Sustain
Level
Key
Released
PX-7 Owners Manual 301
Preset Programming
Editing Presets
Unused
Atk2
Dcy1
Rls2