Chapter 6
Inviso Introduction
This Inviso project showcases various features of the platform, such as omnidirectional, unidirectional,
and nondirectional sound sources, as well as motion trajectories. The listener node is also set up on a
motion trajectory, but you may delete this automation and move the listener with your mouse or the
W, A, S, and D keys on your keyboards to move it up, left, down, and right respectively. Experiment with
different parameter configurations to see how to sound environment changes. You may also load your files
or create new sound spheres, cones, or zones.
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Inviso Omnidirectional Example
In this Inviso project, you will find two omnidirectional sound sources represented as spheres in the scene.
One of the objects, as well as the listener node, move on predetermines movement trajectories. Pay attention
to the relationship between the objects and the listener in terms of distance, orientation, and movement,
paying attention to how the sound react to changes in these.
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Inviso Cones Example
This Inviso project consists of a single sound object with three cones attached to it. After selecting the object,
click on the "Zoom In" button on the object's parameter window. In this view, you can click anywhere outside the
object to rotate your view around it. You can also click and drag the cones to change their orientation. The
interface window on the right allows the the base width (spread) and length (volume) of a cone to be modified.
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Inviso Unidirectional Example
This Inviso project has a layout similar to that of the Omnidirectional example, but with the omni sources
replaced with cones. Pay attention to how the limited directivity of the sound sources affect their propagation
in the scene. Modify the placement of the cones either with mouse interactions in the "Zoom In" view or by
changing the longitude and latitude parameters of the cone in the parameter window.
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Inviso Nondirectional Example
This Inviso project introduces sound zones that are heard without localization cues ones the listner node enters
them. These are meant to establish ambient sound sources that are heard monophonically. Multiple zones can be
overlapped to create complex ambiences. In this example, a listener node on a trajector crosse over two zones.
Play with the placement, scale, and rotation of these zones to modify the sound environment.
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Inviso Motion Parallax Example
In the example, we demonstrate the motion parallax effect with two sound sources that move around the listener
at the same speed but at different distnaces. You will hear two speech samples used as moving sound sources.
Compare the perceived speed of movement of these two sound sources. Does one of them feel faster than the other?
You may also change their movement speed and see how that affects the perceived sense of auditory movement.
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Case Study 1: The Fountain (Unity)
In this case study, we present a VR game built in Unity 6.3. Named "The Fountain,"
this game features fully procedural audio with libPd and spatialization with Steam Audio.
The project materials include the Unity project, and all the associated audio and visual
assets. The Fountain was built for the Meta Quest platform, which requires a VR-ready computers
running Windows for development purposes. While the project supports room-scale 6-degrees-of-freedom
(DoF) movement, it presents a vast landscape that is better explored with virtual navigation.
As a result, this experience is built around controller-based interaction. Based on the scale
of the objects you are interacting with, you can perform pinch and grab gestures using
the controllers.
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Case Study 2: Proximal (Unreal)
In this case study, we present a VR game built in Unreal. Named "Proximal,"
this game features fully procedural audio with MetaSounds and spatialization using
built-in features of the Unreal Engine. The project materials include the Unreal project,
and all the associated audio and visual assets.
The project is built with Unreal 5.7 and tested on Meta Quest 3. As of
this writing, the Meta Quest platform supports development on VR-ready computers running Windows,
which is where this project was built. You may still open the project on other operation systems,
but you may be unable to test it in VR.
The virtual environment can be explored both with virtual and room-scale navigation. However,
the grab interactions to interact with the game are implemented for VR controllers.
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