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The lag time when recording with two soundcards keeps growing. If I use two of the same kind of sound card, is that guaranteed to work, or not?

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The lag time when recording with two soundcards keeps growing. If I use two of the same kind of sound card, is that guaranteed to work, or not?

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No: if one or both of the soundcards haven’t a good clock reference, their sampling rates will differ and the lag will keep on growing. If it stays below some thousand, then the shift will be not hearable. If the soundcards have a crystal oscillator, you may try to change the crystal of both with two exactly matched ones, but this will be quite risky if you aren’t fond on this kind of hacking. 2.

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