Vocal Echo, Tap Delay; Chorus, Flange, Phaser; Tremolo, Rotary; Effect Combinations Chr/Flg/Reverb - IMG STAGELINE MFX-204 Manual De Instrucciones

6.3 Vocal Echo, Tap Delay

GB
The MFX-204 offers two echo effects for various
applications:
Vocal Echo: This echo effect is ideally suited for
vocals. It creates echoes with different delay
times in the left and right stereo channels.
Tap Delay: For this classic echo effect, the delay
time is defined either via the parameter 1 "Delay"
with the control PAR VALUE (7) or by pressing
the button FX LOAD/ PAR / TAP (8).
To define the delay time with the button FX
LOAD/ PAR / TAP and to synchronize the beat of
the echoes:
1) Press the button FX LOAD/PAR/TAP once.
The parameter 1 "Delay" will be displayed.
2) Press the button once again within 10 sec-
onds, keep it pressed until its LED starts
flashing. In the second line of the display,
"Delay [TM]:" and the adjusted delay time in
milliseconds will appear.
3) Press the button FX LOAD/ PAR / TAP to the
beat of the music. The interval between the
last two actuations will define the delay time.
The delay time will be shown on the display
and by flashing of the LED above the button
FX LOAD/ PAR / TAP. In this case, the con-
trols PAR VALUE and FX SELECT are with-
out function.
4) To select other parameters or other effects,
keep the button FX LOAD/ PAR / TAP pressed
again until its LED stops flashing.
Note: The maximum delay time to be adjusted is 0.8 sec-
onds for the stereo mode and 1.27 seconds for the mono
mode. The operating mode is adjustable with the param-
eter 15 "Mode".

6.4 Chorus, Flange, Phaser,

Tremolo, Rotary

These effects are modulation effects, i. e. the
input signal is modulated (e. g. in its pitch) and
mixed to the original input signal. Depending on
the type of modulation, various effects will result.
Chorus: This effect is used to make an instru-
ment or a voice sound "richer". To obtain this
effect, a part of the input signal is delayed
(approx. 30 ms), the pitch is slightly varied all the
time (vibrato) and mixed to a part of the original
input signal.
Flange: The Flanger effect was originally cre-
ated when the same piece of music was played
simultaneously on two tape decks and the output
signals of the units were mixed. Since the two
units were not completely in sync due to toler-
ances, increasing time differences would result
between the signals. When the signals of the
tapes were mixed, various frequencies sweep-
ing across the frequency spectrum would cancel
each other due to the variations in speed. From
the acoustic point of view, you get the impres-
sion of a jet plane flying through the music. Slow-
ing down a tape reel ("flange") would systemati-
cally increase the intensity of this effect.
Phaser: The distortion in sound typical of the
Phaser is created when the phase of a part of the
input signal is shifted and mixed to a part of the
original input signal. The effect is mainly used for
guitars, electric pianos and keyboards.
Tremolo: A tremolo is created when the volume
of a signal is rapidly increased and decreased
alternately. The effect is ideally suited for guitars,
bass guitars and keyboards.
Rotary: This effect simulates rotating speakers
(Leslie effect). The effect became popular in the
era of the Hammond organ for which it was mainly
used. Today it is also often used by guitarists.
14
To stop (display indication "Stop") and
restart (display indication "Go") the simulated
rotation of the two speakers (bass speaker and
horn speaker), press the button BYPASS /
ENTER (10) or actuate the footswitch connected
to the jack BYPASS / ENTER (17). With a corre-
sponding setting ( chapter 7, parameter
"Switch"), it will be possible to switch the rotating
speed between slow and fast with the button
FX LOAD/ PAR / TAP (8) or a footswitch con-
nected to the jack FX LOAD/ PAR / TAP (18).
As a special feature, the MFX-204 allows to
set the parameters for this effect separately for
the bass speaker and the horn speaker.
6.5 Effect combinations Chr / Flg / Reverb,
Delay / Reverb, Chr / Flg / Delay
Chr / Flg / Reverb: The effects Chorus, Flange
and Reverb Room are activated at the same time.
Delay / Reverb: The effects Delay and Reverb
Hall are activated at the same time.
Chr / Flg / Delay: The effects Chorus, Flange and
Delay are activated at the same time.

6.6 Pitch Shifter

The pitch of the input signal is shifted. The max-
imum shifting is 12 semitones (= 1 octave) and is
adjustable in steps of one third of a semitone. To
hear only the signal with the pitch shifted, set the
control DIRECT (3) to "0", e. g. to distort a voice
substantially.

7 Adjustable Effect Parameters

The effect parameters are listed below in alpha-
betic order. The spelling is identical to the one
indicated on the display and used in the table on
page 3.
Attack – for the effect GATE REVERB: the time
the gate requires to completely let pass again
the reverberation signal
The reverberation will be cut off when the signal
falls below an adjustable threshold (
old). If the next reverberation signal exceeds the
threshold, the gate will open again.
Chorus – for the effect PITCH SHIFTER: part of
the signal with the pitch shifted that is returned to
the effect processor input and shifted again and
again in a signal loop
Chorus Vol – volume of the Chorus effect signal
This parameter will define the volume ratio to
other effects.
Chr / Flg Depth – intensity of the modulation for
the Chorus and Flange effects for the effect com-
binations CHR/FLG REVERB and CHR/FLG
DELAY
Chr / Flg HPF – cut-off frequency of the high
pass filter for the effect combinations CHR/FLG
REVERB an CHR / FLG DELAY: minimum fre-
quency for passage of the effect signals (low fre-
quency attenuation)
Chr / Flg LPF – cut-off frequency of the low pass
filter for the effect combinations CHR/FLG
REVERB an CHR / FLG DELAY: maximum fre-
quency for passage of the effect signals (high
frequency attenuation)
Chr / Flg Rate – setting of the Chorus and Flange
effect speeds for the combinations CHR / FLG
REVERB an CHR / FLG DELAY
Chr / Flg Vol – volume of the Chorus and Flange
signals for the combinations CHR / FLG REVERB
an CHR / FLG DELAY
Cyl Depth – intensity of modulation for the sim-
ulation of the rotating bass speaker (effect
ROTARY)
Cyl Feedback – part of the effect signal of the
bass speaker that is returned to the input of the
effect processor
This parameter will affect the intensity of the
effect for the bass speaker.
Cyl HighSpeed – rotating speed for the simula-
tion of the rotating bass speaker in the setting
"Fast"
Cyl Level – volume of the bass speaker for the
effect ROTARY
Cyl LowSpeed – rotating speed for the simula-
tion of the rotating bass speaker in the setting
"Slow"
Cyl LPF – cut-off frequency of the low pass filter
for the simulation of the rotating bass speaker:
maximum frequency for passage of the signal
(high frequency attenuation)
Cyl PEQ F – midrange frequency of the bell filter
that will boost or attenuate a frequency range for
the simulation of the rotating bass speaker
Cyl PEQ G – gain or attenuation of the adjusted
frequency range by a bell filter for the simulation
of the rotating bass speaker
Cyl PEQ Q – bandwidth of the bell filter for the
simulation of the rotating bass speaker;
range: 0.05 – 3 octaves in steps of one third of an
octave referring to the midrange frequency Cyl
PEQ F
Decay – decay time
Delay – delay time
For the effect TAP DELAY, the delay time will
also be defined when the button FX LOAD/ PAR /
TAP is pressed in order to synchronize the beat
of the echoes (
Delay Decay – number of echoes for the effect
combinations DELAY REVERB and CHR / FLG
DELAY
Delay HPF – cut-off frequency of the high pass
filter for the echo signal: minimum frequency for
Thresh-
passage of the echo signal (low frequency atten-
uation)
Delay LPF – cut-off frequency of the low pass fil-
ter for the echo signal: maximum frequency for
passage of the echo signal (high frequency
attenuation)
Delay Time – delay time for the effect combina-
tions CHR / FLG DELAY and DELAY REVERB
Delay Vol – volume of the echo signal for the
effect combinations DELAY REVERB an CHR /
FLG DELAY
Density – reflection density: interval between
the individual reflections in the reverberation sig-
nal
Depth – intensity of modulation for the effects
CHORUS, FLANGE, PHASER and TREMOLO
Displacement – for the effect VOCAL ECHO
Deviation of the echo time between the left and
right channels
EQ Freq – midrange frequency of the bell filter
that will boost or attenuate a frequency range in
the Phaser effect signal
EQ Gain – gain or attenuation of the adjusted
frequency range in the Phaser effect signal by
the bell filter
EQ Q – bandwidth of the bell filter that will boost
or attenuate a frequency range in the Phaser
effect signal;
range: 0.05 – 3 octaves in steps of one third of an
octave referring to the midrange frequency EQ
Freq
chapter 6.3)