Hey guys just doing some measuring today and I accidentally did a sweep with mute on and to my surprise saw a pretty big spike at 60hz which I've always thought was my room. I assume it has something to do with electric equipment running at 120V/60HZ but my question is do I just assume that and assume it's close to what my graph shows before 50 and after 70 HZ or is there a way to run a background sweep and filter that sweep from my real sweeps? Here's the graph to show what I'm talking about.
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