Figure 24
Figure 25
Place the microphone at the chosen measurement position that is closest to the speaker under test (where it will measure the highest sound pressure level). Set the “Input Ch.1” slider to maximum.
Set the “Output” slider to zero and switch on the test signal by
clicking the 
button. Increase the output level until the “Input Ch.1” level meter just goes into the red zone. Decrease the “Input CH.1” level until the signal peaks between the
Close the “Volume and Input Levels” window and click the 
button to switch off the test signal.
Make sure Plot…Overlay is checked to show the frequency response screen and enable several responses to be viewed simultaneously.
Press the F7 key to bring up the Measurement Settings window. In the ‘‘Levels’’ box, set the sine sweep to
Perform a number of measurements in different positions by clicking the 
button (or pressing the F2 key). Make the last measurement you take close to the centre of the listening area and leave the microphone exactly in that position for subsequent measurements. Since Plot…Overlay is checked, the curves will be plotted on top of each other and, when finished, there will be n curves displayed.
In the example shown in figure 22, n = 10.
Click the 
button to display the mean value on top of all the plotted curves. The average room response is then calculated (figure 23). This is the response we want to equalise.
Press CTRL+ E to save this mean result in the “Tune EQ” folder (if this folder doesn’t exist, create it in C:\Program Files\WinMLS2004\Set EQ). Then click Save and name the file, for example, Average_resp.txt (figure 25)
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