The Cubase 9 Operations Manual has a chapter on Tempo Matching Audio starting on page 488.
I imported some audio, and went through the procedure described on pages 492 and 493, lining up all bars and beats as the instructions specify. I thought that by doing this, I could then get the audio to play at a steady tempo, and to play at whatever tempo was set in the project. And as part of what I thought I could accomplish, I figured that when I was done the audio would play in sync with the Cubase metronome.
I noticed that the procedure moved bar and beat markers on the lower of the two rulers in the Sample Editor. The upper ruler stayed exactly the same. And, surprisingly to me, the Cubase metronome always stayed in sync with the upper ruler. In other words, all the bar and beat adjusting I did as I followed the procedure had absolutely no effect on the Cubase metronome.
Meanwhile, there’s another procedure in the manual starting on page 929 which shows you how to do Tempo Detection. I successfully used this method to tempo-match my imported audio to my project.
All well and good, but it leaves me wondering what the point of the first procedure is. As far as I can tell, all I accomplished with the first procedure was to line up bars and beats on the Sample Editor’s lower ruler, but that ruler does not seem to affect anything. Can someone help me understand what the point of that first procedure is, and how to use the results of it?