O3A Directional Emphasis
This plugin modifies levels in a 3D O3A mix to emphasise sound in a particular direction. It is similar to the O3A Directional Mask plugin.
The emphasis direction can be set using the azimuth and elevation controls, or the control surface, where the direction is indicated by the crosshairs.
There are labels on the control surface to help you find left, right, above etc. However, if this still does not make any sense, you might want to see our page on the O3A Visualiser which lays out its viewing region in the same way.
The algorithm used is a "passive" one and should not colour the frequency content of the sound significantly.
This plugin takes a fairly simple approach, providing control in one direction and just two further control parameters. For more sophisticated manipulations you may want to use the O3A Spatial Mask plugin.
This plugin has behaviour which is consistent with Rapture3D directional emphasis.
The plugin is available in the O3A Manipulators plugin library.
When this option is available, a 'View' button appears at the top right of the plugin's user interface.
When this is pressed, the plugin is connected to the View or ViewVR application and is displayed there.
|View Support||ViewVR Support|
The current direction is shown using a cross.
Hold the left mouse button to set the azimuth and elevation.
The current direction is shown using a beam and cross.
Hold a VR controller trigger to set the azimuth and elevation.
Azimuth and Elevation control the direction to emphasised.
Azimuth is the horizontal angle, between -180 to +180 degrees, measured anticlockwise (left) from the front. Elevation is a vertical angle between -90 and +90 degrees, measured with positive upwards and 0 on the horizontal.
For instance, the direction for azimuth +90 and elevation +45 can be found by turning 90 degrees to the left and then looking up by 45 degrees.
Focus determines the shape of the emphasis, with higher values using a more focussed (narrow) region.
A value of zero means that no modification is made to the stream. The focus value can go up to three, for the most focussed emphasis.
Strength determines how aggressively sounds not in the focussed region are reduced in level.
Strength values are between zero and one, where a value of zero means that no modification is made to the stream and a value of one provides the strongest emphasis.
- O3A A20->B Converter
- O3A B->A20 Converter
- O3A Compressor
- O3A Diffuser
- O3A Directional Emphasis
- O3A Directional Mask
- O3A Graphic Equalizer
- O3A Join
- O3A Line
- O3A Low/High Pass Filter
- O3A Move
- O3A Order Amplifier
- O3A Panner LS
- O3A Panner LS XYZ
- O3A Panner LS8
- O3A Parametric Equalizer
- O3A Portal
- O3A Reflection
- O3A Screen Resizer
- O3A Spatial Equalizer
- O3A Spatial Mask
- O3A Spatial Mask Split
- O3A Spotlight
- O3A Spotlight Split
- O3A Swap
- O3A Zoom
- O3A Zoom XYZ