If is selected, WinMLS checks if the selected sound card device is found in a list of sound cards we have tested and found to be able to measure system delay. If yes, then the measurement is performed so that the correct system delay will be found.
The following cards are in this list: Lynx, Card Deluxe, Siena/Marc 8, Delta 1010LT and Digigram Vxpocket/VX222. Note that the Digigram VX pocket and Delta 1010LT has a deviation of 1 sample when using this method of determining initial time delay.
That the sound card is in this list means that the sound card is able to start record and playback at the same time, or with a delay that is constant. This must be fulfilled to be able to measure the initial time delay correctly.
If the sound card is not found in our list, then the measurement is performed in the No, remove system delay mode explained below. If you have found that your sound card is synchronized but not any of the sound cards mentioned above, then you should select the mode Yes, my sound card is synched.