Sound card specific

Shows settings specific to the sound card as shown below.

The  is the default setting. Then WinMLS will make sure the volume is set on the selected mixer line (for example line in or microphone). But it is reported that this will not work on a few sound cards (some of the sound blaster cards may have this problem). Therefore when you start measuring, if controlling the input or output volume from WinMLS is impossible, you should try one of the other alternatives that are present to handle bugs in the sound card drivers or operative system. The choices are

Off – use this if you want to use the Windows mixer to select the mixer line. You must manually open the Window mixer and select the mixer lines for input (and output). In the example below, Microphone is selected as mixer line for the input.

Auto,Invert if XP – WinMLS selects the correct mixer line in the Windows mixer. But if the operative system is XP, this selection is inverted.

Auto - WinMLS selects the correct mixer line in the Windows mixer.

Auto-Invert -  WinMLS selects the correct mixer line in the Windows mixer but inverts the selection.

In addition, an offset can be set. This is set to zero as default as shown below .

You should make sure  is checked. It determines if unwanted feedback that may occur between the measurements should be turned off. If this is not checked, feedback may occur between the measurements because then the original sound card volume is being restored. If checked, it will make sure that the volume setting causing feedback is turned off.

If any checkboxes below the  checkbox are displayed, they will be listed and turned off as default as shown below

You may turn them on by checking them. We recommend that you do not check the controls unless you know what the controls actually do. For more information about this, consult your sound card hardware documentation. A way of testing the effect would be to compare a measurement with the control turned off with a measurement with the control turned on.