How can Audacity be used to retrieve background conversations from a 911 recording? Any advice will be greatly appreciated.
We don’t do that. See these commercial services: https://www.google.co.uk/search?q=audio+forensics .
Gale
And, don’t expect miracles with any software or service. The human brain is one of the best tools for discriminating between simultaneous voices/sounds so if you can’t pick-out the conversation, software is unlikely to help that much. Most of this kind of stuff you see in movies or on TV is pure science fiction.
Most of this kind of stuff you see in movies or on TV is pure science fiction.
Or pure Hollywood…
“We have to catch the killer. Magnify that surveillance video license plate 50,000 times.”
Koz