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Difference between revisions of "Channels"

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[[image:Iii all-blocks-3x13.jpg|500px|link=]]
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__TOC__
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=Available on which products=
  
__TOC__
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* '''Axe-Fx III''', '''FM3''', '''FM9''', '''VP4''': yes
 +
* '''Axe-Fx II''', '''MFC-101''', '''AX8''', '''FX8''': no
  
=Available on which products=
+
=About channels=
  
* '''Axe-Fx III''': yes
+
Most of the effect blocks in current firmware have 4 channels. Channels can be regarded as mini-presets in each block. Each channel provides a unique set of parameter values. Switching between channels is instantaneous and pretty seamless and can be done manually (on the hardware or with a foot controller) or automatically when changing scenes. Channels can also be switched via MIDI for applications requiring automation.
* '''Axe-Fx II''': no
 
* '''MFC-101''': no
 
* '''AX8''': no
 
* '''FX8''': no
 
  
=What are channels=
+
Channels provide quick and easy switching between sounds without the unwanted side-effects of preset changes (due to grid reordering). For example, set the Amp block so that Channel A is a DELUXE VERB model, Channel B is a PLEXI, Channel C is a RECTO and Channel D is FAS MODERN. Then, change channels (sounds) almost instantly at the touch of a button.
  
Most effect blocks in the Axe-Fx III have multiple channels. Channels can be regarded as mini-presets in each block. Each channel provides a unique set of parameter values. Switching between channels is instantaneous and pretty seamless and can be done manually (on the hardware or with a foot controller) or automatically when changing scenes. Channels can also be switched via MIDI for applications requiring automation.
+
Channel-switching is the successor of X/Y switching, a feature of the Axe-Fx II, AX8, FX8 and MFC-101.
  
Channels provide quick and easy switching between sounds without the unwanted side-effects of preset changes (due to grid reordering). For example, set the Amp block so that Channel A is a “Deluxe Verb” model, Channel B is a “Plexi”, Channel C is a “Recto” and Channel D is “FAS Modern”. Then change channels almost instantly at the touch of a button.
+
The differences between presets, scenes and channels can described in another way:
  
Channel-switching is the successor of [[X/Y switching]], a feature of the Axe-Fx II, AX8, FX8 (and MFC-101).
+
; Preset : A preset is like your entire traditional pedalboar.
 +
; Scenes : Scenes are like your entire traditional pedalboard at a particular moment, with effects set on or off and channels set to a specific sounds.
 +
; Channels : Channels are like a pedal on that pedalboard with its controls set in a specific way. There are four channels in most blocks, so there are four different sets of settings.
  
Channels do NOT run simultaneously. They also do not crossfade. If you need crossfading, use the Multiplexer block which can crossfade between input sources, or use a Scene Controller.
+
See the [[Owners_Manuals|Owner's manuals]] for more information.
  
[[Owners_Manuals|More explanation in the Axe-Fx III Owner's Manual ...]]
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<blockquote>
 +
'''FRACTAL AUDIO QUOTES'''
 +
<HR>
  
<blockquote>"Channels are the cat's sphincter. Many blocks, including the amp block, have four channels. Channels switch instantly." [http://forum.fractalaudio.com/threads/so-whats-new-on-the-iii-axe-fx-2-vs-3.134729/#post-1591896 source] </blockquote>
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<blockquote>
 +
[http://forum.fractalaudio.com/threads/so-whats-new-on-the-iii-axe-fx-2-vs-3.134729/#post-1591896]
 +
Channels are the cat's sphincter. Many blocks, including the amp block, have four channels. Channels switch instantly.
 +
</blockquote>
  
<blockquote>"Channels save all settings for a block. A channel is like a preset within a block." [http://forum.fractalaudio.com/threads/so-whats-new-on-the-iii-axe-fx-2-vs-3.134729/page-7#post-1592475 source] </blockquote>
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<blockquote>
 +
[http://forum.fractalaudio.com/threads/so-whats-new-on-the-iii-axe-fx-2-vs-3.134729/page-7#post-1592475]  
 +
Channels save all settings for a block. A channel is like a preset within a block.
 +
</blockquote>
  
<blockquote>"Channels can be thought of as a preset for an individual block. For example, you can think of the Delay block as being a stand-alone delay pedal (or rackmount processor) with four presets. Scenes store the bypass state and channel for each block. By using scenes and channels you can use a single preset for an entire song, an entire set or even the entire show. Since the routing doesn't need to change things switch fast and smooth. When switching presets the processor has to assume the routing might have changed and therefore has to clear all the buffers, mute the audio, etc. which takes time and interrupts the audio." [http://forum.fractalaudio.com/threads/axe-fx-iii-scenes-channels-demo.137003/#post-1624185 source] </blockquote>
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<blockquote>
 +
[http://forum.fractalaudio.com/threads/axe-fx-iii-scenes-channels-demo.137003/#post-1624185]
 +
To recap:<br>
 +
* Channels can be thought of as a preset for an individual block. For example, you can think of the Delay block as being a stand-alone delay pedal (or rackmount processor) with four presets.
 +
* Scenes store the bypass state and channel for each block.
  
<blockquote>The Axe-Fx III was designed so that single preset can be thought of as an entire rack full of processors. Each virtual processor has up to four presets. So if you were trying to do spillover in a rack you would use two reverb processors. [http://forum.fractalaudio.com/threads/spill-over.136766/#post-1624006 source] </blockquote>
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By using scenes and channels you can use a single preset for an entire song, an entire set or even the entire show. Since the routing doesn't need to change things switch fast and smooth. When switching presets the processor has to assume the routing might have changed and therefore has to clear all the buffers, mute the audio, etc. which takes time and interrupts the audio.
 +
</blockquote>
  
<blockquote>"The Control block has four channels." [http://forum.fractalaudio.com/threads/so-whats-new-on-the-iii-axe-fx-2-vs-3.134729/page-5#post-1592247 source] </blockquote>
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<blockquote>
 +
[http://forum.fractalaudio.com/threads/spill-over.136766/#post-1624006]
 +
The Axe-Fx III was designed so that single preset can be thought of as an entire rack full of processors. Each virtual processor has up to four presets. So if you were trying to do spillover in a rack you would use two reverb processors.
 +
</blockquote>
 +
</blockquote>
  
 
=Which effect blocks have channels=
 
=Which effect blocks have channels=
  
[[image:Iii-effect-types-table-364x1024.gif|300px]]
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The effect blocks in the FM3, FM9 and VP4 have the same number of channels as on the Axe-Fx III.
 +
 
 +
There's a single exception: the Multiplexer has 6 channels on the Axe-Fx III and FM9, and 4 channels on the FM3.
 +
 
 +
The Controllers block in the Axe-Fx III, FM3 and FM9 has 4 channels. [http://forum.fractalaudio.com/threads/so-whats-new-on-the-iii-axe-fx-2-vs-3.134729/page-5#post-1592247]
  
And read this:
+
Read this:
 
* [[IR Player block]]
 
* [[IR Player block]]
* [[Modifiers and controllers]]
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* [[Controllers and modifiers]]
  
 
=How to switch between channels=
 
=How to switch between channels=
  
To switch between the channels of an effect block:
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To switch between the channels of an effect block, use:
  
* on the hardware  
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* the hardware GUI
* in the software editor
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* the software editor
* through presets
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* presets
* through scenes
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* scenes
* with the FC-6 or FC-12 controller
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* onboard switches
* through MIDI: assign a MIDI CC in Setup > MIDI/Remote > Channel, and specify a value to select a specific channel:
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* FC-6 or FC-12 controller
 +
* MIDI: assign a MIDI CC in the [[MIDI/Remote menu]] (Axe-Fx III, FM3, FM9 only), and specify a value to select a specific channel, where:
 
:0 = A
 
:0 = A
 
:1 = B
 
:1 = B
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:3 = D
 
:3 = D
  
=Switching channels can cause an audio gap=
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=Gapless changes=
  
Switching an effect between channels may cause a short gap in the sound, which is as short as possible. The gap is caused by the necessity to briefly mute and unmute the sound.  
+
In current firmware, the global parameter [[Setup_menu#Gapless_Changes|Gapless Changes]] enables switching channels on an Amp block and other effect blocks without gaps in the audio.
  
<blockquote>"The "gap" is arbitrary and is simply the time to fade down the old amp and fade up the new amp. You HAVE to do some ramp-down and ramp-up or you'll get artifacts as the gain can be completely different. If you just instantly switch from a clean amp to a distorted amp or vice-versa you'll get a pop. That's just basic signal processing. About the shortest you can make ramp-down/ramp-up without introducing clicks and pops is 15 ms so the total time is 30 ms (plus 5ms as a safety margin)." [http://forum.fractalaudio.com/threads/presenting-the-axe-fx-iii.134717/page-26#post-1593840 source] </blockquote>
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Also read:
 +
* [[Amp_block#Switching_amp_models|Switching amp models]]
 +
* [[Presets#Gapless_changes|Presets: gapless changes]]
 +
* [[Scenes#Gapless_changes|Scenes: gapless changes]]
  
<blockquote>[http://www.fractalaudio.com/tmp/amp_chan_switch.mp3 Demo] "Feels seamless to me (and faster than any of my channel switching amps) but everyone has different definitions." [http://forum.fractalaudio.com/threads/presenting-the-axe-fx-iii.134717/page-27#post-1593846 source] </blockquote>
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<blockquote>'''FRACTAL AUDIO QUOTES'''<HR>
 +
<blockquote>
 +
[https://forum.fractalaudio.com/threads/axe-fx-iii-firmware-23-00-public-beta-4.198988/post-2476262]
 +
There are caveats:
 +
# If presets are using a lot of CPU then the gapless switching may not work as there is not enough CPU available.
 +
# If presets are "stale" (saved under an older revision) then gapless switching may not work until the presets are saved. This is because the preset is being updated during the switchover.
 +
# If you switch presets rapidly you may get a gap because a lot of stuff goes on in the background after switching presets to get ready for the next preset change. If you switch before these background tasks are completed then you'll get a gap. It can take a few seconds for the tasks to complete.
 +
</blockquote></blockquote>
  
<blockquote>"Any faster than that and you risk pops or clicks if the levels and/or gains are markedly different. You can't change the laws of nature." [http://forum.fractalaudio.com/threads/presenting-the-axe-fx-iii.134717/page-31#post-1594370 source] </blockquote>
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=Channels and CPU usage=
  
<blockquote>(firmware Ares 5.00) "Improved Scene/Channel change logic. Only the wet data is muted when changing scenes and channels now leaving the dry data intact which results in smoother transitions."</blockquote>
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[[CPU usage]] is calculated based on the currently selected channel of an effect. When switching channels, CPU usage may change.
  
=Channels and CPU usage=
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=Channels and Scene Ignore=
  
CPU usage calculation is based on the currently selected channel of an effect. When switching channels, CPU usage may change.
+
The Scene Ignore parameter makes sure that the current block channel is carried over to the next scene. Read this: [[Scenes#Scene_Ignore|Scene Ignore]]
  
 
=Channels and modifiers=
 
=Channels and modifiers=
  
If a controller is assigned as a source to a parameter in a modifier menu, you can choose between applying it to all channels of that block, or to just a single channel.  
+
If an internal or external controller is assigned as a source to a parameter, you can choose between applying it to all channels of that block, or to just a single channel. Read this: [[Controllers and modifiers]]
 +
 
 +
Note that a parameter allows only one modifier, not multiple.
 +
 
 +
=Copy or swap channels=
  
Note: a parameter allows only one modifier, not multiple.
+
On the hardware, channel settings can be copied-and-pasted within the same block (Layout > Tools), or swapped.
  
=Copying and pasting channel settings=
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To copy channels between blocks and to/from other presets, use the software editor.
  
On the hardware, channel settings can be copied and pasted within the same block (Layout > Tools). To copy channels between blocks and to/from other presets, use the software editor.
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=Reset a single channel or all channels=
  
=Resetting a channel or an entire block=
+
Resetting a block defaults the parameters of the current channel. It does not change the settings of other channels.
  
Defaulting the parameters of an effect block resets the channel parameters to their default values.
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To reset all channels of the block, switch to the other channels and repeat the process, or use the software editor to reset the entire block in one go.
  
Resetting applies to the current channel only. To reset the entire block, switch to the other channels and repeat the process, or use the software editor to reset the entire block (all channels) in one go.
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Read [[Presets#Reset_a_block|Reset a block]] for more information.
  
=Using channels to compare sounds and parameters=
+
=Tips, tricks and troubleshooting=
 +
 
 +
==Use channels to compare sounds and settings==
  
 
Channels offer an easy way to compare sounds when tweaking. They also allow you to quickly detect non-default settings by resetting one channel to default settings and then comparing the channels.
 
Channels offer an easy way to compare sounds when tweaking. They also allow you to quickly detect non-default settings by resetting one channel to default settings and then comparing the channels.
  
An alternative approach to comparing sounds is saving a preset as a Snapshot in the editor. Select Revert to get the original sound back. Then drag and drop the snapshot file into the editor.
+
=Videos=
 +
 
 +
[[video:Leon-ScenesPresetsChannels]]
 +
[[video:Leon-ScenesvsChannels]]
 +
[[video:Cooper-SceneIgore]]
 +
[[video:Leon-SceneandChannels]]
 +
[[video:Rosh-Scenes-Channels]]
 +
[[video:Rosh-Channels]]
 +
[[video:Rosh-TrueGapless]]
  
 
[[category:Axe-Fx3]]
 
[[category:Axe-Fx3]]
 +
[[category:FM3]]
 +
[[category:FM9]]
 +
[[category:VP4]]
 
[[category:Sounds]]
 
[[category:Sounds]]
 +
[[category:Remote]]
 +
[[category:All]]

Latest revision as of 10:01, 25 October 2024

Available on which products

  • Axe-Fx III, FM3, FM9, VP4: yes
  • Axe-Fx II, MFC-101, AX8, FX8: no

About channels

Most of the effect blocks in current firmware have 4 channels. Channels can be regarded as mini-presets in each block. Each channel provides a unique set of parameter values. Switching between channels is instantaneous and pretty seamless and can be done manually (on the hardware or with a foot controller) or automatically when changing scenes. Channels can also be switched via MIDI for applications requiring automation.

Channels provide quick and easy switching between sounds without the unwanted side-effects of preset changes (due to grid reordering). For example, set the Amp block so that Channel A is a DELUXE VERB model, Channel B is a PLEXI, Channel C is a RECTO and Channel D is FAS MODERN. Then, change channels (sounds) almost instantly at the touch of a button.

Channel-switching is the successor of X/Y switching, a feature of the Axe-Fx II, AX8, FX8 and MFC-101.

The differences between presets, scenes and channels can described in another way:

Preset 
A preset is like your entire traditional pedalboar.
Scenes 
Scenes are like your entire traditional pedalboard at a particular moment, with effects set on or off and channels set to a specific sounds.
Channels 
Channels are like a pedal on that pedalboard with its controls set in a specific way. There are four channels in most blocks, so there are four different sets of settings.

See the Owner's manuals for more information.

FRACTAL AUDIO QUOTES


[1] Channels are the cat's sphincter. Many blocks, including the amp block, have four channels. Channels switch instantly.

[2] Channels save all settings for a block. A channel is like a preset within a block.

[3] To recap:

  • Channels can be thought of as a preset for an individual block. For example, you can think of the Delay block as being a stand-alone delay pedal (or rackmount processor) with four presets.
  • Scenes store the bypass state and channel for each block.

By using scenes and channels you can use a single preset for an entire song, an entire set or even the entire show. Since the routing doesn't need to change things switch fast and smooth. When switching presets the processor has to assume the routing might have changed and therefore has to clear all the buffers, mute the audio, etc. which takes time and interrupts the audio.

[4] The Axe-Fx III was designed so that single preset can be thought of as an entire rack full of processors. Each virtual processor has up to four presets. So if you were trying to do spillover in a rack you would use two reverb processors.

Which effect blocks have channels

The effect blocks in the FM3, FM9 and VP4 have the same number of channels as on the Axe-Fx III.

There's a single exception: the Multiplexer has 6 channels on the Axe-Fx III and FM9, and 4 channels on the FM3.

The Controllers block in the Axe-Fx III, FM3 and FM9 has 4 channels. [5]

Read this:

How to switch between channels

To switch between the channels of an effect block, use:

  • the hardware GUI
  • the software editor
  • presets
  • scenes
  • onboard switches
  • FC-6 or FC-12 controller
  • MIDI: assign a MIDI CC in the MIDI/Remote menu (Axe-Fx III, FM3, FM9 only), and specify a value to select a specific channel, where:
0 = A
1 = B
2 = C
3 = D

Gapless changes

In current firmware, the global parameter Gapless Changes enables switching channels on an Amp block and other effect blocks without gaps in the audio.

Also read:

FRACTAL AUDIO QUOTES


[6] There are caveats:

  1. If presets are using a lot of CPU then the gapless switching may not work as there is not enough CPU available.
  2. If presets are "stale" (saved under an older revision) then gapless switching may not work until the presets are saved. This is because the preset is being updated during the switchover.
  3. If you switch presets rapidly you may get a gap because a lot of stuff goes on in the background after switching presets to get ready for the next preset change. If you switch before these background tasks are completed then you'll get a gap. It can take a few seconds for the tasks to complete.

Channels and CPU usage

CPU usage is calculated based on the currently selected channel of an effect. When switching channels, CPU usage may change.

Channels and Scene Ignore

The Scene Ignore parameter makes sure that the current block channel is carried over to the next scene. Read this: Scene Ignore

Channels and modifiers

If an internal or external controller is assigned as a source to a parameter, you can choose between applying it to all channels of that block, or to just a single channel. Read this: Controllers and modifiers

Note that a parameter allows only one modifier, not multiple.

Copy or swap channels

On the hardware, channel settings can be copied-and-pasted within the same block (Layout > Tools), or swapped.

To copy channels between blocks and to/from other presets, use the software editor.

Reset a single channel or all channels

Resetting a block defaults the parameters of the current channel. It does not change the settings of other channels.

To reset all channels of the block, switch to the other channels and repeat the process, or use the software editor to reset the entire block in one go.

Read Reset a block for more information.

Tips, tricks and troubleshooting

Use channels to compare sounds and settings

Channels offer an easy way to compare sounds when tweaking. They also allow you to quickly detect non-default settings by resetting one channel to default settings and then comparing the channels.

Videos