Stereo Sources
When the audio clip of a source object is stereo, the default behaviour of the atmokySpatializer plugin is to render both channels of the stereo audio clip as a single source, i.e. the stereo sum is rendered. However, we have added a neat little trick to keep the stereo image of a the clip intact. We do this by applying the HRTF of the left ear to the left channel and the HRTF of the right ear to the right channel. This way, the stereo image is preserved while the source is still rendered from a single point in space. You can control this behaviour by adjusting the Spread parameter under the "3D Sound Settings" of the source. A value of 0 means that the stereo sum is rendered, and with the Spreadturned all the way up, the stereo image is fully preserved.
You can adjust the spread value dependent on the source's distance to the listener, which can be used to add a nice effect: When the source is far away, the spread is low such that the stereo channels are summed, but when the source is close, the spread is high such that the whole stereo image is rendered.