I sit in so many meetings --usually filled with a few too many people-- a bunch of whom don't say one word, that it makes me wonder.
You realize that it is your responsibility to participate. Not just in meetings, but in most everything to do with your job. Sure anyone can be a fly on the wall, sit and listen and take it all in. But is that really the point?
Is that how you are choosing to learn, by listening? I'd advise you to choose participate as the verb you choose to learn by.
Ask a question during a meeting. Make a comment. Let others hear you voice, your brains, your humor -- something. If you participate in meetings, people ultimately recognize your contribution which I can tell you goes a long way.