Sound proofing floor


I'm in a condo and my downstairs neighbor can hear my music. I'm looking into putting a sound barrier over the cement floor and under the carpet. Has anyone had to do this and can point me toward products I can use?

rbull11

I wish I could remember what it was; I was watching some YouTube video on room treatment and the guy was talking about just that very thing; was it creosote? Or am I just thinking of Monty Python? 

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We used a rubber membrane to help cut the trnasmission of sound through a concrete black wall at school between the dance studio and the recording studio.  It really cut the sound down but it may only be a wall treatment. can't remember the brand