Table of Contents

Wwise SoundSeed® Impact

(See the Wwise SoundSeed Impact Properties below.)

Wwise SoundSeed® Impact is a real-time audio effect plug-in that allows you to do the following:

  • Transform model parameters by operating directly on detected resonance characteristics.

  • Synthesize output sound using the transformed model.

The Wwise SoundSeed Impact plug-in relies on the following data elements created using the SoundSeed Impact Modeler standalone application.

  • Residual sound: The noisy portion of the original source saved as a PCM WAV file.

  • Model parameters: A very compact SSM file that holds resonance information in the form of various parameters.

For more detailed information, please refer to the SoundSeed Impact Modeler Help.pdf found in the Modeler package you can download from the Audiokinetic website.

[Caution] Caution

The Modeler will not work without the Microsoft Visual C++ 2005 Redistributable Package SP1.

Using this plug-in, you can transform the model parameters by manipulating the following three characteristics of a resonance mode:

  • Frequency (Hz)

  • Magnitude (dB)

  • Bandwidth (Hz)

The following illustration shows the three characteristics that define the overall shape of a resonance mode.

[Note] Note

All of these properties can also be mapped to Game Parameters using RTPCs. Note that any changes made to parameter values via an RTPC will only be applied at the next playback of the object instance.

The SoundSeed Impact plug-in can be used like any other Wwise audio effect except the following limitations apply:

  • Only mono files are supported (SoundSeed Impact Modeler will only generate mono files).

  • Can only be inserted on objects contained in either the Actor-Mixer or Interactive Music hierarchies. It cannot be inserted on busses in the Master-Mixer Hierarchy.

Wwise SoundSeed Impact Properties

Interface Element



The name of the Effect instance.

Effect instances are a group of effect property settings. They can be one of two types: custom instances or ShareSets. Custom instances can be used by only one object, whereas ShareSets can be shared across several objects.

Displays the object's color. Clicking the icon opens the color selector.

Select a color to apply it to the object.

[Note] Note

Selecting the square at the far left of the color selector causes the object to inherit its parent's color. When a color has been explicitly chosen for an object, it is displayed with the palette icon and a yellow triangle in the lower-right corner, as shown.


Determines whether the element is included or excluded. When selected, the element is included. When unselected, the element is not included. By default, this applies across all platforms. Use the Link indicator (to the left of the check box) to determine or to set platform-specific customizations.

When this option is unselected, the property and behavior options in the editor become unavailable.

Default value: true

Indicates the number of elements in your project that contain direct references to the object. The icon is displayed in orange when references to the object exist, and in gray when no references exist.

Selecting the button opens the Reference View with the object's name in the References to: field.


Additional information about the Effect.


Indicates the name of the object currently being metered.

Allows you to browse for other objects to meter.
[Note] Note

The metering interface elements only appear in the Effect Editor for Effects that include VU meters.

Sets the display of the Effect Editor's selected tabs. By default, there is one panel displaying only one selected tab. You can, however, click a splitter button to split the panel into two, either side by side or one on top of the other, for two different tabs. The currently selected option is highlighted with a background color.

[Note] Note

You cannot display the same tab in both panels. If you select the tab that is currently displayed in the other panel, then the other panel will automatically display another tab.



Displays the filename of the currently loaded Model parameter file.


Opens a load dialog box, where you can browse to and select the Model parameter file (.ssm) that you want to load.

You can also drag model files directly from Windows to load them in Wwise.