Not in Illinois!
We have a long tradition in this state regarding eavesdropping (thanks to the influence of organized crime) and recording voice requires an overhear warrant or two party consent. In most other states this is not a problem and a voice recording is an excellent investigative tool.
Life is a gift from God. What you do with it is your gift to God.
Concerned about Officer Safety, liability, citizen beefs? Use the best weapon you have. Be Nice. It's tough to attack, sue or complain about someone you like.