If you hear low frequency voices is that mental illness?

Apparently it is schizophrenia, at advanced stages haha. 

Not necessarily. Some people have dental fillings in their mouth. And they pick up radio broadcasts .

I am one of those people I've got two different kinds of fillings in my mouth on the top and on the bottom.

I have made money hundreds of times in a bar.

By betting somebody $5 that I could tell them exactly what was playing on the radio on a certain station.

Some people that hear voices think they're going crazy and it's nothing to do with going crazy it's just having to do with your dental fillings acting as a crystal radio.

Yes it's not a joke it really happens. This isn't the only thing that happens that makes people think they're going crazy. Some people swear that they can hear people singing and whispering and talking low toned.

Want to find out if your hearing things or if you're actually hearing something that's there?  Download the free.spectroid audio meter off of the Google Play store.

Install it and turn it on first hold it up to your mouth and let it get a sample.  Then take it wherever you think that you're hearing the sounds coming from the voices.

Take another bar graph.  If there is really sound you will see wavy lines like a heartbeat.

If you're just having a mental problem there will be no wavy lines it'll just be a flat line.

This is a very useful tool to find out if you're hearing schizophrenic voices.  Or if you're picking up the sound of radio stations on the electrical wires inside your wall behind your bed.

Or in other places of the house.

I knew a lady she told me she was going to the doctor the next morning because she was sure she was going insane she said she was hearing people singing All night Long and nobody was there.

I told her let me guess you were listening to some soldiers singing Battle hymn of the Republic right.

She said how did you know? I said you're not going crazy it's the high tension wire outside the house when the cars aren't on the road you can hear a radio station in San Diego California that plays old music.

Yes I got voices hearing your not good enough 

Pretty sad when we get trapped