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March 2024: all pages have been checked and are up-to-date

Difference between revisions of "IR Player block"

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__TOC__
 
__TOC__
[[image:IR.png|link=|225px]]
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=Available on which products=
 
=Available on which products=
  
 
* '''Axe-Fx III''': 2 blocks
 
* '''Axe-Fx III''': 2 blocks
* '''FM3''': no
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* '''FM3''' and '''FM9''': no
* '''FM9''': no
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* '''Axe-Fx II''', '''AX8''' and '''FX8''': no
* '''Axe-Fx II''': no
 
* '''AX8''': no
 
* '''FX8''': no
 
  
=Channels or X/Y switching=
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=Channels or X/Y=
  
 
* '''Axe-Fx III''': 4 channels
 
* '''Axe-Fx III''': 4 channels
  
=What is the IR Player=
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=About the IR Player=
  
The IR Player block is a simplified [[Cab block]].
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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 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.
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You can also use it for room ambience because the IR Player supports [[FullRes|FullRes IRs]].
  
Read this:
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It also get used for room EQ correction.
 +
 
 +
Read these pages for more information:
 
* [[Impulse responses (IR)|Impulse Responses (IRs)]]
 
* [[Impulse responses (IR)|Impulse Responses (IRs)]]
 
* [[Cab block]]
 
* [[Cab block]]
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* [[Cab-Lab]]
 
* [[Cab-Lab]]
  
=Phase correction=
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<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 block diagram=
 +
 
 +
[[image:IR Player block.png|550px]]
  
<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>
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=Parameters=
  
<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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The IR Player supports two IRs with individual LEVEL and PAN controls for each IR.
  
=FullRes IRs=
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A MIX control is also provided so the block can be used as a convolution reverb.
  
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.
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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.
  
=Parameters=
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Choices for IR LENGTH are Off, 256, 512, 1024 and Max. Setting IR LENGTH to OFF defeats the IR.
 +
 
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[[Impulse_responses_(IR)#IR resolution|IR resolution]] has more information.
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 +
 
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[[image:slope.gif|500px]]
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=Tips, tricks and troubleshooting=
 +
 
 +
==No Global blocks==
  
==Parameters table==
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The IR Player doesn't support [[Global blocks]].
  
These parameter apply to the block in firmware 17 and later for the Axe-Fx III.
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==Phase correction==
  
{| class="wikitable"
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<blockquote>
|-
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'''FRACTAL AUDIO QUOTES'''
! '''Parameter'''
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<HR>
! Axe-Fx III
 
|-
 
| Bank, Number, Level, Pan, IR Length
 
| yes
 
|-
 
| Low Cut, High Cut, Filter Slope
 
| yes
 
|-
 
| Mode: Parallel / Series
 
| yes
 
|-
 
| IR Length
 
| yes
 
|-
 
| Input Select
 
| yes
 
|}
 
  
==Mode==
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<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>
  
The MODE parameter selects between Parallel and Series (firmware 17 and later for the Axe-Fx III).
+
<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>
  
==IR Length==
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=Videos=
  
Choices are: Off, 256, 512, 1024 and Max (firmware 17 and later for the Axe-Fx III).
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See the [[Impulse_responses_(IR)#Videos|videos]] in Impulse Responses for more information.
  
 
[[category:Axe-Fx3]]
 
[[category:Axe-Fx3]]
 
[[category:Sounds]]
 
[[category:Sounds]]
 
[[category:All]]
 
[[category:All]]

Latest revision as of 00:40, 1 March 2024

Available on which products

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

Channels or X/Y

  • Axe-Fx III: 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 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


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

[3] 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

See the videos in Impulse Responses for more information.