IR Player block

IR Player

Axe-Fx III: 2 blocks, 4 channels
VP4: 1 block, 4 channels
FM3, FM9: no

Axe-Fx II, AX8, FX8: no

About the IR Player

The IR Player block processes up to two impulse responses. It 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 feel suited 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 (Axe-Fx only). It also get used for room EQ correction.

Read these pages for more information:

• Impulse Responses (IRs)
• Cab block
• Tone Match block
• IR Capture
• Cab-Lab

FRACTAL AUDIO QUOTES

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[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.).

Parameters

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

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.

Read IR resolution for more information.

Tips, tricks and troubleshooting

No Global blocks

The IR Player doesn't support Global blocks.

Phase correction

FRACTAL AUDIO QUOTES

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[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.

VP4: feeding FOH and stage amp

To send one mono output with an IR to FoH and another to a stage amp and cab, using the VP4's IR Player, do this: [4]

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

Videos

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