I just recently purchased the one gallon tank version of this compressor. When I first got it it seemed to be very very quiet but now that it is getting used on a daily basis, it seems to me that it has gotten just a tad bit louder. No where near too loud to talk over, in fact I still use it while wife is in living room watching t.v. It just seems a little more louder than usual. Have any of you experienced this?