Flanger block

Available on which products

• Axe-Fx III: 2 blocks
• FM3: yes @@
• Axe-Fx II: 2 blocks
• FX8: 2 blocks
• AX8: 1 block

Channels or X/Y switching

• Axe-Fx III and FM3: 4 channels
• Axe-Fx II: X/Y
• FX8: X/Y
• AX8: X/Y

What is flanging

"Flanging" originated from pressing on the flange of a tape reel of two tape decks that were synchronized. This caused a small delay between the two decks, creating the famous whooshing sound.

Wikipedia

Premier Guitar: Behind the Bucket Brigade

"The core flanger algorithm is a delay with feedback. Very little difference between using the delay block as a flanger and using the flanger block."

"It is basically the same as the delay block but with finer control over the base delay time. It's essentially the same algorithm."

"The basic algorithm IS a delay. Chorus and flangers are basically delays. If you can do it with the delay block then you can do it with the flanger block UNLESS the base time is greater than 10 ms."

"The issue isn't the algorithm. It's understanding the parameters and how to adjust them. Obviously things are too confusing for some people and I will have to give some thought on how to make the effect easier to adjust or clarify the controls. If anything, the flanger block is superior to the delay block for flanging because you have more precise control over the time. The delay block is quantized to 1 ms increments."

(Axe-Fx II firmware 17) "The Flanger block has been completely rewritten. The new algorithms now model the behavior of classic bucket-brigade device (BBD) units (except they are true stereo). The Depth parameter works somewhat differently now and sets the maximum delay time (up to 20 ms). When Auto Depth is not off the maximum delay is reduced as the rate is increased. There are now three Auto Depth values: Low, Medium and High. Turning Auto Depth to Off allows complete control over the delay time. The minimum time is set by the Delay parameter and the maximum time is set by the Depth. Several new Flanger types have been added which demonstrate the new algorithms."

(Axe-Fx II firmware Quantum 1.00) "Dry Delay Shift has been renamed to Dry Delay and works differently (and more intuitively). The parameter now sets the delay time of the dry signal as a percentage of the maximum delay time of the wet signal. For classic thru-zero flanging this parameter should be set to 50%. For interesting new sounds experiment with lower or higher values. Note that this parameter has no effect if Through Zero is set to Off."

Position of the Flanger block on the grid

The Flanger block can be placed before or after the Amp block. For guitar it often sounds best when placed before distortion. As a studio effect, put it after the Amp block.

Mono or stereo Flanger

Flanger is mono or stereo. It defaults to mono to prevent phase problems when used before an Amp block.

To make it stereo, adjust LFO Phase.

More information about phase cancellation

Flanger types

1. Digital Mono
2. Digital Stereo
3. Analog Mono
4. Analog Stereo
5. Thru-Zero
6. Stereo Jet
7. Zero Flanger
8. Pop Flanger

Parameters

Parameters table

Parameter	Axe-Fx III / FM3	Axe-Fx II	AX8, FX8
Type	yes
Rate	yes
Tempo	yes
Depth	yes
Feedback	yes
Delay	yes
Low Cut, High Cut	yes
Drive	yes
LFO Type	yes
LFO Phase	yes
LFO Bypass Reset	yes
LFO Hicut	yes
Auto Depth	yes
Through-Zero	yes
Dry Delay (Shift)	yes
Phase Reverse	yes
Stereo Spread	yes
Global Mix	yes

Dry Delay

Use this for best results with Through-Zero flanging. It sets the delay time of the dry signal as a percentage of the maximum delay time of the wet signal. For classic Through-Zero flanging, this parameter should be set to 50%. For interesting new sounds experiment with lower or higher values. This parameter has no effect if Through Zero is set to Off.

Depth and Time

The Depth parameter sets the maximum delay time (up to 20 ms). When Auto Depth is not off, the maximum delay is reduced as the rate is increased. There are now three Auto Depth values: Low, Medium and High. Turning Auto Depth to Off allows complete control over the delay time. The minimum time is set by the Delay parameter and the maximum time is set by Depth.

"The key is getting the depth and time right."

"I think the problem is people set the Depth too high. For slow rates the Depth should be between 10 and 20%."

"The temptation is to turn Depth up but that can actually decrease the intensity of the effect. Depth controls the sweep depth but if you turn it up you'll sweep too much and ruin the effect. Always start very low and bring it up gradually."

"Depth controls the sweep depth. Time controls the minimum delay time of the wet signal. Depth controls the maximum time, up to 10 ms beyond the minimum time. If you set Time to 1 ms and Depth to 100% the delay sweeps from 1 ms to 11 ms. Personally I like around 1 ms for the time and 10 - 20% for the depth."

"If you can do it with the delay block then you can do it with the flanger block UNLESS the base time is greater than 10 ms. I've never seen a flanger have more than 10 ms of delay since then it's really not a flanger anymore but a chorus."

"The Axe-Fx time parameter sets the minimum time. The modulation is unipolar on top of the base time, up to 10 ms of modulation. So the maximum time is 20 ms which is longer than the A/DA. Technically a flanger is a very short delay."

Feedback

"Feedback was something that was added to "flangers" that were intended to emulate this effect but the original flanging technique did not have feedback. There is nothing to say a chorus can't have feedback as well. It just happens to not sound good so it's not done."

Delay

The minimum delay time is set by the Delay parameter and the maximum delay time is set by Depth.

"Delay range: 0 to 10 ms. Technically the block is capable of 0 to 20 ms but I've never found any use for that. Just sounds strange to me."

Mix

"The ideal mix is 50% as this will create the most intense effect but sometimes a little more or less is desirable. If you deviate from 50% you'll reduce the depth of the notches caused by the comb filtering. This can make the effect more subtle but perhaps more "organic". Deep notches aren't always desirable."

LFO Bypass Reset

This resets the LFO whenever the block is bypassed. This allows synchronizing the sweep to the engagement of the effect.

Not supported on the AX8.

LFO Phase

This sets the stereo field of the Flanger. 0 is mono.

Stereo Spread

Values beyond +/-100% increase the apparent image beyond the stereo field.

Tips and tricks

Set the rate at zero

For a "fixed" flanger, set Depth to 0 and adjust Delay.

The Resonator block is basically a type of fixed flanger. Well, four of them in parallel actually. source

Replicate famous flangers

• A/DA flanger (Javajunkie)
• Electric Mistress (Javajunkie)
• Electric Mistress (Admin M@)

Contour the taper

"If you want to contour the taper of a flanger, try this trick: Place a modifier on the TIME. Set the source to SEQUENCER. Add a little damping. Now you can craft any kind of sweep shape you want. Use MIN and MAX in the modifier to set the depth. You can also do this with the DELAY block MONO TAPE algorithm. It has a different sound than the Flanger block. Modify MOTOR TIME using an LFO or the trick above." source

Tremolo

The flanger can be configured to operate as a tremolo.

Create a flanger effect with other effects

The Multitap Delay block and Delay block can be used to create flanging effects too.