"Distance Dependent Scaling" of the dry signal component's volume has been used for the creation of all MIRx settings, with the additional option "Consider Microphone Offset" activated, too.
The two remaining options which affect the Dry Signal were switched off when I created these presets, but this doesn't mean that you couldn't use either or both of them in your own creations (or when simply adapting MIRx settings for your needs):
- "Simulate Air Absorption" is basically a gentle low-pass filter which affects the dry signal, but not the signal that's sent into MIR's convolution engine - a routing that would be hard to achieve otherwise, especially when using MIR Pro's plug-in version without the split routing available in VE Pro. The effect is of course distance dependent, usually quite subtle and will get obvious only when using large distances between the Main Microphone and the instrument's Icon on the Venue's stage.
- "Directivity Filtering" is a very special effect when used on the dry signal component: Usually, directivity filtering which is only applied to the signal sent into the convolution core, depending on the data stored in the Instrument Profiles and the rotation of the Icon. By activating this option, also the dry signal will be filtered when you rotate it. - The perceived effect is pretty much the same as the player would turn the instrument away from the spot microphone. This (virtual) spot mic will stay in its perfect relative position as long as the option is switched off.
... the latter is what I strongly suggest to use as default setting. :-) The effect is of course "wowing" the occasional listener, but I rarely found musically meaningful usage for it.
HTH,