pitch warping when recording using ASIO driver (internal Spark ADC clock jitter issue?)

  • Hi,
    another issue I've discovered with spark:

    recording over asio in reaper under windows using the spark asio driver v4.8.0, spark firmware v1.1.3.18, the pitch of the recording is badly warped :

    pitch warped on recording
    The pitch is still warped when played back through another audio interface so it means it gets warped at analog-to-digital conversion, ie right from the start. So it seems like the internal ADC of my spark has a strong clock jitter issue.