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RFX-32 Plug-ins  

 

9

 

RFX-32

 

RFX Flanger

 

I/O Mode

 

The three I/O modes control the input/output
configuration of the flanger:

 

Mono -

 

 In this mode, only the left channel input signal 

is processed. All the flange stages are used in series to 
produce a single effect signal, which is fed equally to 
both left and right outputs.

 

Mono/Stereo

 

 - In this mode, a pseudo-stereo output is 

produced by processing only the left input channel. 
Multiple flange stages with slightly different character-
istics produce distinct left and right output signals 
which create a wide stereo panorama. 

 

Stereo -

 

 In this mode, the RFX Flanger operates as a true 

stereo flanger: left and right input channels are 
processed separately to produce distinct left and right 
outputs. The processing applied to each channel is the 
same until higher Flange Mult values and alternating 
cancellation Flange Modes are encountered, or until 
Dual sweeps are used to create inverted flange sweeps 
between outputs.

 

Sweep Smoothing

 

 This parameter applies varying amounts of smoothing 

to the sweep control signal after it has been shaped and 
before it is applied to control the delay lines.

O

O

O

O

 

Sweep Smoothing values 

greater than 0 may not be 
particularly useful until using the 
Log or Square sweep shapes, 
which have sharp transitions 
that can benefit from some 
smoothing.

 

The main utility of the Sweep Smoothing is for 
smoothing the transitions between flange offsets 
produced by the flanger’s internal Sample & Hold.

Sweep Smoothing is also applied to the flange offsets set 
directly by the Flange Delay modulation parameter. In 
this case it can be very useful for smoothing jittery 
input from MIDI controllers or limiting the amount of 
pitch-shift applied to the signal during radical 
modulation changes.

 

Samp/Hold Source

 

 A sample and hold can be inserted into the modulation 

path or turned off. This parameter selects the clock 
source for the sample and hold. See “Background: 
Sample & Hold” in the RFX operation manual for more 
information.

 

Off

 

 - Modulation signal bypasses the Sample & Hold.

 

LFO 2

 

 - an oscillator with a range of .25 to 980 bpm.

 

System Tempo

 

 - LFO 2 synced to Seq/Arp/MIDI clock

 

• MIDI

 

 - Any time the MIDI CC value 

 

(connected via “Edit 

Modulation” in the Setup Edit screen)

 

 changes and is a 

number greater than 0, the input to the S & H is sampled 
and held on its output. At values below 1, the input is 
passed unchanged.

Summary of Contents for RFX

Page 1: ...oppy disk into your E4 Ultra 4 Press Load from the main E4 screen and select the floppy drive 5 Locate the first Plug in on the floppy and Merge it with the current bank Repeat for any other Plug ins on the floppy 6 Press Master FX RPlugin 7 Select one of the new Plug ins using the data entry control PIXXX 8 Press the Copy function key 9 Select an empty Flash location for the Plug in pi100 pi199 1...

Page 2: ... channels together while leaving their signal paths independent The block diagram of the Mixer Section is shown below There are actually two Locked modes which differ in the behavior of the single stereo Pan parameter Locked Pan mode Locked Pan mode When turned leftward the Pan control pans the right input signal over towards the left output channel and when turned rightward pans the left input si...

Page 3: ...h of the para EQ band from 1 24th octave to 2 octaves adjustable in semitones Dialing in the Para EQ An easy way to dial in a parametric EQ is to increase the gain and narrow the bandwidth so you can really hear the effect of the EQ Next adjust the Center frequency control until you find the area you want to affect Now reduce the Gain and widen the Width to give a more natural curve EQ Gain Adjust...

Page 4: ...its rate can be sync d to the system tempo tied to a MIDI controllable LFO or driven directly by MIDI synth modulation The simplified block diagram of the RFX Flanger is shown below L Out R L R Flange Offset Flange Range Modulation Smoothing MIDI Mod MIDI Mod MIDI Mod Multiple Delay Stereo Flanger 1 80 mS S H Modulation Rate Waveshape LFO 1 Sample Hold Source MIDI Mod rate MIDI Mod Resync MIDI Mod...

Page 5: ...e Offset This is the offset or initial delay time to which the modulated delay sweep is added One way to view this is as the minimum sweep delay an interpretation that is shown in the display of the Flange Range parameter its delay range value is dynamically redisplayed as the Flange Offset changes The Flange Offset can be adjusted from a minimum of 0 actually 1 sample to 40 milliseconds Flange Ra...

Page 6: ...rameter is inactive when the Sweep Source is set to MIDI Sweep Rate This parameter is a rate multiplier or divisor for the flange sweep When the Sweep Source is LFO1 this parameter manually sets the frequency of the internal sweep LFO1 to a tempo calibrated in beats per minute BPM from 25 to 1000 One complete cycle of the LFO will occur for each beat When the Sweep Source is System Tempo this para...

Page 7: ...aximum feedback level which is further modulated by the Feedback Modulation parameter _ _ _ _ Use extra caution with your sound system and hearing when operating the RFX Flanger at high feedback levels While the flanger is stable up to 100 feedback it is still possible to produce clipping within the flanging stages and high output levels when the feedback level approaches 100 The amount of through...

Page 8: ...produce widely varying flanging effects When set to Positive all flanging stages use positive cancellation producing a rounded flanging sound when set Negative using all negative cancellation produces a more hollow effect When set to parameter values from Alt 1 through Alt 6 various patterns of alternating polarities are applied to different stages of the flanger Note that these different patterns...

Page 9: ... and before it is applied to control the delay lines O O O O Sweep Smoothing values greater than 0 may not be particularly useful until using the Log or Square sweep shapes which have sharp transitions that can benefit from some smoothing The main utility of the Sweep Smoothing is for smoothing the transitions between flange offsets produced by the flanger s internal Sample Hold Sweep Smoothing is...

Page 10: ... Phaser is shown below Most parameters are unitless which implies that to achieve a particular effect the plug in must be tuned by ear to a particular input signal rather than analytically Experimentation especially with the Mod Range Env Attack Env Release and Env Shape parameters is necessary in order to explore the wide range of sonic effects The Envelope Phaser itself is composed of two separa...

Page 11: ...ximum offset amount which is further modulated by the Mod Offset MIDI modulation input Mod Range This is similar to the Mod Range control on the RFX Phaser controlling the overall extent of phase shift that is affected by the signal envelope The difference is that it now incorporates a negative range varying from 100 to 100 By using a large Mod Offset value and a negative Mod Range the relationshi...

Page 12: ...g the way in which audio signals with different dynamic ranges and crest factors affect the degree of phase shift A logarithmic response can often be used to smooth out the envelope of signals with erratic amplitude response without slowing the attack time Conversely a linear shape makes the envelope follower more sensitive to small amplitude changes and can be used to elicit more active phase shi...

Page 13: ...the left channel audio input to drive the phase shifter allowing cross modulation between the enve lope of one signal and the audio of another Mono Inv L Env R This is similar to the Mono L Env R side chain mode except that the left input signal is applied to both left and right sides of the phase shifter The phase shifter then operates in the same way as for Stereo Inverted mode with the left and...

Page 14: ... Scotts Valley CA USA 95067 0015 Telephone 831 438 1921 FAX 831 438 8612 EUROPE AFRICA MIDDLE EAST E MU ENSONIQ Suite 6 Adam Ferguson House Eskmills Industrial park Musselburgh East Lothian Scotland EH21 7PQ Telephone 44 0 131 653 6556 ...

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