Joseph Nicolas Pancras Royer (1703-1755): La Marches des Scythes. For harpsichord.
A MS (Mid-Side)-microphone setup creates, when properly mixed, two virtual microphones in an XY-configuration, that create a stereo sound (intensity stereo). The mix of the MS-microphones influences the angle and the pattern of the virtual microphones, and as a result also the volume distribution over the stereo image.. As for the standard MS-setup with one mid-microphone and one side-microphone recording angle and pattern/volume distribution are not independent. This can be overcome by using two microphones for the mid (in the best case, a front-facing figure-8 microphone and an omnidirectional microphone or wide-cardioid).
Adjust recording angle, pattern of the virtual microphones here. The stereo image is characterized by its width and also its power sum graph, that shows, how equally loud the sound, coming from different angles, is captured. Some configurations will emphasize or attenuate the center. You can directly adjust this emphasis and the calculator will then determine the appropriate pattern of the virtual mics. Adjusting the recording angle will then either keep the pattern or the center emphasis (as long as this is possible). Not every combination of values is physically possible.
|Boost/attenuate center||-2 dB||+8 dB|
XY90 and XY120 stand for cardioid mics with an angle of 90 resp. 120 degrees between their axes (not the recording angle). These two configurations are widely used by common handheld recorders and also tend to be first choice for XY-mic-setups, although 90 and 120 degrees are not a “law”. K1 and K2 are two configurations I personally enjoy. Blumlein (named after Alan Blumlein, inventor of the stereophonic recording technique) makes use of the two fig. of 8-mics only and angles them by ±45 degrees.
|Mid-Pattern 1||Sensitivity: mV/Pa||Resulting gain|
|Mid-Pattern 2||Sensitivity: mV/Pa||Resulting gain|
|Side-Pattern||Fig. of 8||Sensitivity: mV/Pa||Resulting gain|