Rabbits may vocalize in frequencies humans can't hear. How can I record my rabbits talking and play it back to myself?
They're quiet, but rabbits do talk. They growl when angry or threatened, they make a honking/huffing noise when they are very excited, and they will scream when they think they are in mortal danger. Those are all noises you can hear easily if you are paying attention.
However, sometimes my house rabbits will do things that make me think they are talking to each other, but I don't hear anything. For example, one rabbit is behind the couch and the other is in the middle of the room--they can't see each other, but suddenly they swivel their ears to each other and both make the same motion. Rabbits can hear sounds in frequencies of 360-42,000 Hz whereas humans can hear 64-23,000 Hz
so I suspect they are speaking in frequencies I cannot hear.
I would like to somehow record my rabbits talking to each other and play it back in a range that I can hear. Is this possible, and what would the best way to do it be? I have no experience with sound recording and no idea of what kind of equipment or software would be useful. The rabbits themselves are pretty tame, live in my apartment, and would put up with me doing weird things around them, fwiw.