Creative Emu 1820m Manual

5 - Effects
FX Edit Screen
E-MU Digital Audio System61
To Delete a User Preset
1.Select the user preset you wish to delete from the user preset menu.
2.Click on the Edit button. A pop-up menu appears.
3.Select Delete. A pop-up dialog box appears asking you to confirm your action.
4.Click OK to delete the preset or No or Cancel to cancel the operation.
To Rename a User Preset
1.Select the user preset you wish to rename from the user preset menu.
2.Click on the Edit button. A pop-up menu appears.
3.Select...

5 - Effects
List of Core Effects
62Creative Professional
List of Core Effects
DSP Resource Usage
There are two main factors which determine the total number of effects available for use 
at any given time: Tank Memory and DSP Instructions. Using too much of either 
resource will cause effects to be unavailable (grayed out) in the FX menu. In addition, 
the strips themselves use DSP Instructions, so only create strips that you actually need. 
fTip: Saving a session 
“defragments” the effect/
DSP...

5 - Effects
Core Effects Descriptions
E-MU Digital Audio System63
Core Effects Descriptions
1-Band Para EQ
This single band parametric equalizer is useful 
when you just want to boost or cut a single range 
of frequencies. For example, if you just want to 
brighten up the lead vocal a bit, you might 
choose this EQ. This EQ offers up to ±15dB cut 
or boost.
1-Band Shelf EQ
This single band shelving equalizer is useful when you just want to boost or cut a single 
range of frequencies at the high or low...

5 - Effects
Core Effects Descriptions
64Creative Professional
3-Band EQ
This versatile equalizer provides two shelving filters at the high and low ends of the 
frequency range and a fully parametric band in the center. Up to ±24 dB of boost or cut 
is provided for each band.
ENote: The Wet/Dry 
Mix control on an 
equalizer should normally 
be set to 100% wet or 
unpredictable results may 
occur.
Setting up a Parametric EQ
1.Turn up the gain on the band you are working with. This allows you to easily hear...

5 - Effects
Core Effects Descriptions
E-MU Digital Audio System65
4-Band EQ
This 4-band equalizer provides two shelving filters at the high and low ends of the 
frequency range and two fully parametric bands in the center. Up to ±24 dB of boost or 
cut is provided for each band.
Note: The Wet/Dry Mix control on an equalizer should normally be set to 100% wet or 
unpredictable results may occur.
For more information about setting up a parametric EQ, see page 64.
ParameterDescription
High Shelf GainSets the...

5 - Effects
Core Effects Descriptions
66Creative Professional
Auto-Wah
This effect creates the sound of a guitar wah-wah pedal. The “Wah” filter sweep is 
automatically triggered from the amplitude envelope of the input sound. Auto-wah 
works well with percussive sounds such as guitar or bass.
The Auto-Wah is a bandpass filter whose frequency can be swept up or down by an 
envelope follower, which extracts the volume contour of the input signal. The Envelope 
Sensitivity setting allows you to properly set...

5 - Effects
Core Effects Descriptions
E-MU Digital Audio System67
Chorus
An audio delay in the range of 15-20 milliseconds is too short to be an echo, but is 
perceived by the ear as a distinctly separate sound. If we now vary the delay time in this 
range, an effect called chorus is created, which gives the illusion of multiple sound 
sources. A slight amount of feedback serves to increase the effect. A very slow LFO rate is 
usually best for a realistic effect, but a faster LFO rate can also be useful...

5 - Effects
Core Effects Descriptions
68Creative Professional
Basic Controls
The three main controls of a compressor are the Ratio control, the Threshold control and 
the Gain control.
If the signal falls below the Threshold, no processing will take place. Signals exceeding 
the Threshold will have gain reduction applied as set by the ratio control. This 
important control allows you to dial in the range of amplitudes you want to tame. For 
example, if you’re trying to trim off just the loudest peaks,...

5 - Effects
Core Effects Descriptions
E-MU Digital Audio System69
Distortion
Most audio processors aim to provide low distortion, but not this one! The sole purpose 
of this effect is to add distortion, and lots of it. This effect provides “fuzz box” style, 
clipping distortion which is particularly effective on guitar, bass, organs, electric pianos 
or whatever.
The input signal first passes through a lowpass filter. The Lowpass Filter Cutoff 
Frequency allows you to control the number of new harmonics...

5 - Effects
Core Effects Descriptions
70Creative Professional
Flanger
A flanger is a very short delay line whose output is mixed back together with the original 
sound. Mixing the original and delayed signals results in multiple frequency cancella-
tions known as a comb filter. Since the flanger is a type of filter, it works best with 
harmonically rich sounds.
 
A low frequency oscillator is included to slowly change the delay time. This creates a 
rich, sweeping effect as the notches move up and down...