Speaker Arrangement Window

★The speaker arrangement editor window showing a predefined 13.1 Auro 3D speaker arrangement.

The speaker arrangement editor offers the ability to prepare the model of the sound diffusion system you are actually using.

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When you find yourself working on a custom multi-channels speaker arrangement, the Speaker Config editor is where a model of the sound diffusion system can be defined and stored into the list of speaker arrangements.

Open the speaker arrangement editor by clicking on the Edit button of a Channel-Based room, by the Speaker Arrangement pull down menu. Pre-configured arrangements cannot be deleted or modified but can be duplicated (a copy will be generated for editing). A new config can also be created.

Creating & editing a speaker arrangement

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Speaker Arrangement section

Arrangement drop-down menu: this menu allows access to a list of all your existing speaker arrangement.

Duplicate: create a copy of the current speaker arrangement.

!> You cannot overwrite a factory arrangement. Duplicate it before trying to edit it.

New: create a new empty speaker arrangement.

Delete: delete the current speaker arrangement.

!> There is no confirmation before deleting an arrangement.

Rename: rename the current speaker arrangement.

Import from: allow importing a speaker configuration from a third-party software. See the next section for more detail.

Export: open a window to export a selection of speaker arrangement.

Alignment section

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Reset: revert the compute process.

Compute: compute an ideal position to align all the speakers on the same circle to improve the sweetspot rendering. The furthest away speaker is used as the alignment reference.

Regarding the LFE, by default it is not included in the compute process. If you wish to change this, you will find a “compute LFE” option in the room panel of the preferences page.

It is preferable to do this alignment in SPAT Revolution instead of external processing as SPAT will use the computed speaker locations (the virtual speakers) for actually spatializing afterward.

Speakers section

It is possible to create many speakers or to edit them all at once using geometric transformation. In SPAT Revolution, these transformations are mathematical law used to distribute points (in our case, speakers) in the space. In other words, it can help to create circles, spheres or lines of speakers in second instead of minutes.

Add: add new speakers according to a specified transformation.

Transform: modify the current speaker arrangement according to a specified transformation.

For more information about it, check out the transformation section

Speaker section

Add: create a new speaker in the arrangement.

Del.: remove the selected speaker in the arrangement.

Move up: move the selected speaker one row above.

Move down: move the selected speaker one row below.

The speakers list section

Nb.: identify the channel of the speaker.

!> With a Spat Revolution Essential license, blocks cannot use an arrangement containing more than sixteen speakers.

Name: identify the name of the speaker.

To create an LFE channel, simply name one speaker of the arrangement “LFE”. It is possible to create until 4 LFE, naming them “LFE 1”, “LFE 2”, “LFE 3” and “LFE 4”. The corresponding sends button will appear on the source parameters panel.

!> SPAT Revolution uses speaker naming to sum speaker arrangement.

X (m): define the position of the speaker on the X-axis, in meters.

Y (m): define the position of the speaker on the Y-axis, in meters.

Z (m): define the position of the speaker on the Z-axis, in meters.

Azimuth (°): define the angle of incidence of the source to the center of the 3D space, in the horizontal plan.

Elevation (°): define the angle between the source, the center of the 3D space and horizontal plan.

Distance (m): define the distance between the source and the center of the 3D space, in meters.

Orientation: define the orientation of the speaker. Default settings is “Automatic”

Yaw: rotate the speaker around the Z-axis. 0° degree is pointing the listener.

Pitch (°): rotate the speaker in elevation.

!> Orientation, yaw and pitch are only useful in WFS use case.

Delay (ms): add a fix amount of latency to a speaker.

Gain (dB): change the sound level of the speaker.

!> In many cases, it is wiser to let the delay and gain parameters untouched, and let the “compute” function do the job.

Panning Type Tips section

Here, we can find information about which pan law is available in regard of our speaker array. Some explanations are displayed to help understand why some pan laws aren’t available.

There are five colors associated with the possible panning types:

Error displayed with HOA panning type.

For more information about each pan law, check out the section Panning algorithms.