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THE GUIDED TOURS
© 1985, 1986, 1987 E-mu Systems, Inc. Page 36
GUIDED TOUR #3: THE FILTER and VCA/LFO MODULE
BACKGROUND
The filter module contains eight 24dB/octave low pass filters (one per channel) that vary a
sound’s high frequency content.
The VCA/LFO module contains eight VCA’s that control a sound’s amplitude envelope, and
eight LFO’s that provide modulation to the filters or VCA’s.
We suggest loading in the synthesizer disk and selecting Preset 01 (arpeggiated bass/synth) to
most clearly hear the filter and VCA/LFO effects, however, any other sustaining sound (strings,
piano, etc.) is acceptable. We will cover the filter module first, and then proceed to the VCA/LFO
module.
SPECIFYING THE CURRENT VOICE
1. Activate the Filter module (if it is not already) by pushing its button.
2. Assign the Current Voice according to the instructions given in GENERAL
INSTRUCTIONS2 (“Assigning the Current Voice”); the filter will affect this Voice or these
Voices. If you loaded the synthesizer disk, you may process the entire synthesizer by
specifying Vl6, V17, V18, and V19 as the Current Voice.
To specify a different Current Voice, refer to FILTER 0.
FILTER FUNCTION 1: CHANGING CUTOFF FREQUENCY, Q, and ENVELOPE
1. After specifying the Current Voice, the display will give the Module Identifier in the top
line and list the assigned Voices in the bottom line.
2. Now follow the instructions in FILTER 1 (“Frequency, Q, Envelope Amount”). When it
describes how sliders A, B, and C affect the sound, vary these sliders while playing the
keyboard to hear the results.
Important note:
Any slider setting change will not affect the note(s) being held down
(except with the Master Tune function); you must hit a new note or re-trigger the same
one to hear any effect.
Since we do not yet want to exit this function, after reading step 1 in FILTER I return to
this section starting with step 3.
3. After playing with the three sliders, before proceeding to the next section set Freq to
000, Q to 50, and Env to +40. Then exit the function by pressing ENTER (as described
in GENERAL
Summary of Contents for EII+
Page 11: ...INTRODUCTION 1985 1986 1987 E mu Systems Inc Page 11 INTRODUCTION ...
Page 20: ...INTRODUCTION 1985 1986 1987 E mu Systems Inc Page 20 ...
Page 26: ...THE GUIDED TOURS 1985 1986 1987 E mu Systems Inc Page 26 THE GUIDED TOURS ...
Page 84: ...VOICE DEFINITION MODULE 1985 1986 1987 E mu Systems Inc Page 84 Fig VDEF 8 Fig VDEF 9 ...
Page 118: ...PRESET DEFINITION MODULE 1985 1986 1987 E mu Systems Inc Page 118 ...
Page 168: ...ENTER MODULE 1985 1986 1987 E mu Systems Inc Page 168 ENTER MODULE ...
Page 214: ...SMPTE SUPPLEMENT 1985 1986 1987 E mu Systems Inc Page 214 SMPTE SUPPLEMENT OVERVIEW PROTOCOL ...