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Difference between revisions of "IR Player block"

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__TOC__
 
__TOC__
  
−
=Available on which Fractal Audio products=
+
=Available on which products=
  
 
* '''Axe-Fx III''': 2 blocks
 
* '''Axe-Fx III''': 2 blocks
−
* '''Axe-Fx II''': n/a
+
* '''VP4''': 1 block
−
* '''AX8''': n/a
+
* '''FM3''', '''FM9'''
−
* '''FX8''': n/a
+
* '''Axe-Fx II''', '''AX8''', '''FX8''': no
  
−
=X/Y and channels=
+
=Channels or X/Y=
  
−
* '''Axe-Fx III''': 4 channels
+
* '''Axe-Fx III''', '''VP4''': 4 channels
−
* '''Axe-Fx II''': n/a
 
−
* '''AX8''': n/a
 
−
* '''FX8''': n/a
 
  
−
=What is the IR Player=
+
=About the IR Player=
  
−
This is a block dedicated to processing a single IR. Similar to the Cab block, but much more simple. It's exclusive to the Axe-Fx III.
+
The IR Player block processes up to two [[Impulse responses (IR)|impulse responses]], has less features than the [[Cab block]] and therefore requires less CPU. It can also process [[Tone Match block]] data that has been exported as an IR. This makes it the first choice to run an impulse response of a device such an acoustic guitar or a preamp.
  
−
It lends itself well to processing Tone Matches which have been exported as IRs, like those of acoustic guitars.
+
You can also use it for room ambience because the IR Player supports FullRes IRs.
  
−
Read more about:
+
It also get used for room EQ correction.
−
* [[Cab_block_and_IRs#Impulse_responses_.28IRs.29|Impulse Responses]]
+
 
−
* [[Cab block and IRs|Cab block]]
+
Read these pages for more information:
 +
* [[Impulse responses (IR)|Impulse Responses (IRs)]]
 +
* [[Cab block]]
 
* [[Tone Match block]]
 
* [[Tone Match block]]
 +
* [[IR Capture]]
 +
* [[Cab-Lab]]
 +
 +
<blockquote>
 +
'''FRACTAL AUDIO QUOTES'''
 +
<HR>
 +
<blockquote>
 +
[https://forum.fractalaudio.com/threads/axe-fx-firmware-release-version-17-01-release.178095/post-2170002]
 +
The IR Player block does not attempt to normalize the volume as it is a generic convolution player and doesn't know whether the IR is a cabinet IR or some other type of IR (i.e., reverb, violin, etc.).
 +
</blockquote>
 +
</blockquote>
 +
 +
==IR Player on the VP4==
 +
 +
An IR Player block has been added to the VP4. This lets you load [[Impulse responses (IR)]]. An IR can recreate the tone of a guitar speaker cabinet, and also works for acoustic body modeling and other creative applications. The IR Player can handle up to two IRs. The VP4 lets you store 256 IRs on the hardware. These can be managed via “Manage Cabs” or Fractal-Bot in VP4-Edit. Muting an IR saves CPU.
 +
 +
To send one mono output with an IR to FoH and another to a stage amp and cab, do this: [https://forum.fractalaudio.com/threads/vp4-firmware-v3-00-public-beta-2.214457/#post-2691167]
 +
# Make sure the IR player is last in the chain.
 +
# Add an IR in the first slot of the IR Player and pan it hard left.
 +
# Load a totally flat or 'null' IR in the second slot and pan it hard right. [https://forum.fractalaudio.com/threads/vp4-firmware-v3-00-public-beta-2.214457/#post-2691167 You can find such an IR here]
 +
 +
=IR Player block diagram=
 +
 +
[[image:IR Player block.png|550px]]
 +
 +
=Parameters=
 +
 +
The IR Player supports two IRs with individual LEVEL and PAN controls for each IR.
 +
 +
A MIX control is also provided so the block can be used as a convolution reverb.
 +
 +
The MODE parameter selects between Parallel and Series. When in series, the individual level and pan controls are defeated and removed from the UI. The volume is consistent if MODE is set to Parallel and only one IR is being used.
 +
 +
Choices for IR LENGTH are Off, 256, 512, 1024 and Max. Setting IR LENGTH to OFF defeats the IR.
 +
 +
[[Impulse_responses_(IR)#IR resolution|IR resolution]] has more information.
 +
 +
 +
[[image:slope.gif|500px]]
 +
 +
=Tips, tricks and troubleshooting=
 +
 +
==No Global blocks==
 +
 +
The IR Player doesn't support [[Global blocks]].
 +
 +
==Phase correction==
 +
 +
<blockquote>
 +
'''FRACTAL AUDIO QUOTES'''
 +
<HR>
 +
 +
<blockquote>
 +
[https://forum.fractalaudio.com/threads/as-designed-exported-ir-from-tma-out-of-phase-and-9-db-level-difference.154000/post-1830563]
 +
The Cab and IR Player blocks automatically "phase correct" IRs so that the peak signal is positive.
 +
</blockquote>
 +
 +
<blockquote>
 +
[https://forum.fractalaudio.com/threads/phase-correct-switch-for-tma-irp-cab-to-fix-ir-phase-cancellations.154005/post-1831184]
 +
When an IR is read from storage the first few hundred samples are scanned and the maxima is found. If the maxima is a negative value the polarity of the IR is inverted because it is assumed the polarity of the IR was inverted when captured. This can happen if the speaker is wired backwards, the IR is captured from the back of the cabinet, the back of a ribbon mic is used, or a polarity inversion occurs in the power amp or mic preamp.
 +
</blockquote>
 +
</blockquote>
 +
 +
=Videos=
 +
 +
Watch the videos on the [[Impulse_responses_(IR)#Videos|Impulse Responses page]] for more information.
  
 
[[category:Axe-Fx3]]
 
[[category:Axe-Fx3]]
 
[[category:Sounds]]
 
[[category:Sounds]]
 +
[[category:All]]

Latest revision as of 20:00, 24 July 2025

Available on which products

  • Axe-Fx III: 2 blocks
  • VP4: 1 block
  • FM3, FM9
  • Axe-Fx II, AX8, FX8: no

Channels or X/Y

  • Axe-Fx III, VP4: 4 channels

About the IR Player

The IR Player block processes up to two impulse responses, has less features than the Cab block and therefore requires less CPU. It can also process Tone Match block data that has been exported as an IR. This makes it the first choice to run an impulse response of a device such an acoustic guitar or a preamp.

You can also use it for room ambience because the IR Player supports FullRes IRs.

It also get used for room EQ correction.

Read these pages for more information:

FRACTAL AUDIO QUOTES

[1] The IR Player block does not attempt to normalize the volume as it is a generic convolution player and doesn't know whether the IR is a cabinet IR or some other type of IR (i.e., reverb, violin, etc.).

IR Player on the VP4

An IR Player block has been added to the VP4. This lets you load Impulse responses (IR). An IR can recreate the tone of a guitar speaker cabinet, and also works for acoustic body modeling and other creative applications. The IR Player can handle up to two IRs. The VP4 lets you store 256 IRs on the hardware. These can be managed via “Manage Cabs” or Fractal-Bot in VP4-Edit. Muting an IR saves CPU.

To send one mono output with an IR to FoH and another to a stage amp and cab, do this: [2]

  1. Make sure the IR player is last in the chain.
  2. Add an IR in the first slot of the IR Player and pan it hard left.
  3. Load a totally flat or 'null' IR in the second slot and pan it hard right. You can find such an IR here

IR Player block diagram

IR Player block.png

Parameters

The IR Player supports two IRs with individual LEVEL and PAN controls for each IR.

A MIX control is also provided so the block can be used as a convolution reverb.

The MODE parameter selects between Parallel and Series. When in series, the individual level and pan controls are defeated and removed from the UI. The volume is consistent if MODE is set to Parallel and only one IR is being used.

Choices for IR LENGTH are Off, 256, 512, 1024 and Max. Setting IR LENGTH to OFF defeats the IR.

IR resolution has more information.


Slope.gif

Tips, tricks and troubleshooting

No Global blocks

The IR Player doesn't support Global blocks.

Phase correction

FRACTAL AUDIO QUOTES

[3] The Cab and IR Player blocks automatically "phase correct" IRs so that the peak signal is positive.

[4] When an IR is read from storage the first few hundred samples are scanned and the maxima is found. If the maxima is a negative value the polarity of the IR is inverted because it is assumed the polarity of the IR was inverted when captured. This can happen if the speaker is wired backwards, the IR is captured from the back of the cabinet, the back of a ribbon mic is used, or a polarity inversion occurs in the power amp or mic preamp.

Videos

Watch the videos on the Impulse Responses page for more information.

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