This is one way technology will help in finding noises that come from the bike while riding. Of course, it will come from the bike manufacturers who are engaged in the Grand Tours and spend lots of research and development $$$ to tweak the rides for the professionals.
Various kinds of sensors attached to the bike situated in areas and monitored and recorded. Not only that, but these sensors detect movement as well as noise. They are movable and can be attached to the bike in different areas.
Think of it as a collection of data later to be analyzed for bike performance under various conditions. It would be useful in how bikes respond under loads and then the different types of material that change these responses.
So then the natural byproduct is the "noise" we experience from time to time.