Ambisonics Example: Helico Passby Overhead

The “Ex 2 - Helico Passby Overhead” Sound FX is only a mono source file. However, we have set it to have a 3D User-defined path, which helps to simulate the overhead directional sound of a helicopter flying by. More importantly, the 3D positioning allows the ambisonic output to be audibly more precise in higher orders.

You may wish to play with the User-defined path to help you better appreciate the differences in precision.

To adjust the User-defined path:

Select the “Ex 2 - Helico Passby Overhead” Sound FX, found in the Actor-Mixer Hierarchy under the “Ambisonics” Work Unit.
It opens in the Property Editor.
In the Positioning tab of the Property Editor, click Edit... next to the User-defined option of the Position Source group box.
The Position Editor opens.
Within the Position Editor, adjust the path as desired by clicking points and dragging them to the desired location. Add points by double-clicking in the Graph view. Refer to the contextual help to learn more about how you can adjust the user-defined path.

You should play the “Ex 2 - Helico Passby Overhead” Sound FX in the Transport Control using different ambisonic channel configurations. The higher order ambisonics configurations deliver more precise sound than the lower order ones.

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