I have just begun paying attention to STATISTICS under the AUDIO menu, and after some investigation of current projects I have discovered this:
Original recorded audio files are normal - no DC offset and at 24-bit resolution. What appears to be happening is if I split the full-length event into much smaller events and move them around (for example, rearranging a recorded take of hand percussion by moving single hits and or short rhythmic phrases to new locations), then those small relocated events may have developed either or both DC offset and reduced bit resolution, according to Statistics.
The DC offset is usually less than 1% and can be either a positive or negative value, but is sometimes more than 1%. The resolution may or may not be reduced, to 23 or 22 bits.
My research is telling me that DC offset is introduced through hardware issues. But the affected audio is being processed only within Cubase - just sliced and moved, not rendered, frozen, exported and imported, bounced through a UAD card or anything like that. It has only gone through the Events to Part process.
Anyone know what’s going on? This does tend to shake one’s confidence the vaunted Cubase audio engine.