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Lateral parameters will
be calculated if the microphone type is set to 
in
Calculate->Calculation Options... as shown below
An example of computation is shown below.
Calculation of lateral parameters requires microphone option omni-directional and figure-of-8. It is further assumed that the omni-directional and the figure-of-8 microphones have the same sensitivities (or alternatively the sensitivities are calibrated in WinMLS) and are properly equalized with respect to each other, in the direction of maximum sensitivity. The two impulse responses should be measured in the same position, if possible simultaneously. The figure-of-8 should have one of the null-directions pointing either towards the source or along the long axis of the room, see ISO 3382. It is also extremely important that they are mutually synchronized, with matching absolute time scales. This can for instance be accomplished measuring the two channels simultaneously. If they are not measured simultaneously, make sure that WinMLS is set to include the system delay (initial time delay) in the measurement. This can be done from Measurement->System Delay.... It can also be done from Measurement->Settings... if you in step 6 set the reference to right channel input as shown in the figure below. If this is done, it will override the settings you have selected in Measurement->Settings....
Detecting the start of the impulse responses for lateral parameters
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