> what works for me is to generate a sine wave (I used wavelab in windows), > then copy and paste it until it is several hours long, then insert 10 > seconds of silence at the beginning. Start rolling your sine wav recording > from another machine with a known good soundcard, and start your test > machine recording in the silent period. Its super easy to sync up to your > original wav by deleting all the silence at the beginning. > Along these lines RME provides a number of audio test files that you might be interested in. One advantage of getting them from a known source is the ability to do level matching throughout your system. http://www.rme-audio.de/english/download/audtest.htm
