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Difference between revisions of "IR Player block"

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[[image:IR.png|link=|250px]]
 
 
__TOC__
 
__TOC__
 
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[[image:IR.png|link=|225px]]
 
=Available on which products=
 
=Available on which products=
  
 
* '''Axe-Fx III''': 2 blocks
 
* '''Axe-Fx III''': 2 blocks
 
* '''FM3''': no
 
* '''FM3''': no
 +
* '''FM9''': no
 
* '''Axe-Fx II''': no
 
* '''Axe-Fx II''': no
 
* '''AX8''': no
 
* '''AX8''': no
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* '''Axe-Fx III''': 4 channels
 
* '''Axe-Fx III''': 4 channels
* '''FM3''': n/a
 
* '''Axe-Fx II''': n/a
 
* '''AX8''': n/a
 
* '''FX8''': n/a
 
  
 
=What is the IR Player=
 
=What is the IR Player=
  
The Axe-Fx III provides the IR Player block. It's a simplified [[Cab block]].
+
The IR Player block is a simplified [[Cab block]].
 
 
This is not available on the FM3.
 
 
 
It can process a single IR, has less features than the Cab block and therefore requires less CPU. It can also process Tone Matches which have been exported as IRs. This makes it the first choice to run a IR of devices such an acoustic guitar or a preamp.
 
  
The MODE parameter selects between Normal Res and Hi-/UltraRes IRs.
+
It processes a single [[Impulse responses (IR)|IR]], has less features than the Cab block and therefore requires less CPU. It can also process [[Tone Match block]] data which 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.
  
 
Read this:
 
Read this:
 
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* [[Impulse responses (IR)|Impulse Responses (IRs)]]
* [[Impulse response (IR)|Impulse Responses (IRs)]]
 
 
* [[Cab block]]
 
* [[Cab block]]
 
* [[Tone Match block]]
 
* [[Tone Match block]]
 
* [[IR Capture]]
 
* [[IR Capture]]
 
* [[Cab-Lab]]
 
* [[Cab-Lab]]
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 +
<blockquote>"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.)." [https://forum.fractalaudio.com/threads/axe-fx-firmware-release-version-17-01-release.178095/post-2170002]</blockquote>
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=Phase correction=
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<blockquote>"The Cab and IR Player blocks automatically "phase correct" IRs so that the peak signal is positive." [https://forum.fractalaudio.com/threads/as-designed-exported-ir-from-tma-out-of-phase-and-9-db-level-difference.154000/post-1830563]</blockquote>
 +
 +
<blockquote>"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." [https://forum.fractalaudio.com/threads/phase-correct-switch-for-tma-irp-cab-to-fix-ir-phase-cancellations.154005/post-1831184]</blockquote>
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=FullRes IRs=
 +
 +
Firmware 17 and later for the Axe-Fx III make the IR Player compatible with [[FullRes]] IRs. The IR Player block supports two IRs with individual level and pan controls for each IR. Setting the IR Length to OFF defeats the IR. A Mix control is also provided so the block can be used as a convolution reverb. A Mode control allows the two IRs to be in parallel or series. When in series the individual level and pan controls are defeated and removed from the UI.
  
 
=Parameters=
 
=Parameters=
  
{| class="wikitable"
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==Mode==
|-
+
 
! '''Parameter'''
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The MODE parameter selects between Parallel and Series (firmware 17 and later for the Axe-Fx III).
|-
+
 
| Bank
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The volume is consistent if Mode is set to Parallel and only one IR is being used.
|-
+
 
| Number
+
==IR Length==
|-
+
 
| Low Cut, High Cut
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Choices are: Off, 256, 512, 1024 and Max (firmware 17 and later for the Axe-Fx III).
|-
+
 
| Filter Slope
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==Slope==
|-
+
 
| Mode
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[[image:slope.gif|400px]]
|-
 
| Input Select
 
|}
 
  
 
[[category:Axe-Fx3]]
 
[[category:Axe-Fx3]]
 
[[category:Sounds]]
 
[[category:Sounds]]
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[[category:All]]

Revision as of 08:27, 25 March 2022

IR.png

Available on which products

  • Axe-Fx III: 2 blocks
  • FM3: no
  • FM9: no
  • Axe-Fx II: no
  • AX8: no
  • FX8: no

Channels or X/Y switching

  • Axe-Fx III: 4 channels

What is the IR Player

The IR Player block is a simplified Cab block.

It processes a single IR, has less features than the Cab block and therefore requires less CPU. It can also process Tone Match block data which 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.

Read this:

"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.)." [1]

Phase correction

"The Cab and IR Player blocks automatically "phase correct" IRs so that the peak signal is positive." [2]

"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." [3]

FullRes IRs

Firmware 17 and later for the Axe-Fx III make the IR Player compatible with FullRes IRs. The IR Player block supports two IRs with individual level and pan controls for each IR. Setting the IR Length to OFF defeats the IR. A Mix control is also provided so the block can be used as a convolution reverb. A Mode control allows the two IRs to be in parallel or series. When in series the individual level and pan controls are defeated and removed from the UI.

Parameters

Mode

The MODE parameter selects between Parallel and Series (firmware 17 and later for the Axe-Fx III).

The volume is consistent if Mode is set to Parallel and only one IR is being used.

IR Length

Choices are: Off, 256, 512, 1024 and Max (firmware 17 and later for the Axe-Fx III).

Slope

Slope.gif