Not sure about video, but for audio I'd probably:
- purchase a decent but (relatively) inexpensive microphone* and hook it up to a laptop;
- place the mic close to where the noise is the loudest; and
- use free Audacity software on the laptop to record the sounds you're hearing.
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(*A quick search of amazon.com and bestbuy.com shows some well-rated mics for under $25.)
- purchase a decent but (relatively) inexpensive microphone* and hook it up to a laptop;
- place the mic close to where the noise is the loudest; and
- use free Audacity software on the laptop to record the sounds you're hearing.
_________________
(*A quick search of amazon.com and bestbuy.com shows some well-rated mics for under $25.)