Apply nearfield compensation filtering to a first order ambisonic signal (B-format).
The B-format signal, an array: [w, x, y, z]
The distance, in meters.
WARNING: Distance = 0 is an invalid value!
Output will be multiplied by this value.
This value will be added to the output.
Nearfield compensation1 is usually used in conjunction with FoaDecode to compensate for the distance of loudspeakers on playback. Additionally, FoaNFC can also be used to reduce the proximity effect found in nearfield recordings.