Measure the underside of the kitchen sink. Take the measurement from the top of the bowl on one side, all the way along the base to the top of the bowl at the other side.
Cut a square of mass-loaded vinyl (MLV), using the measurement for the length of both sides. Wrap the MLV around the base of your sink and trim any excess material from your square to create a more snug fit.
Attach the MLV to the underside of your sink, using duct tape. Wrap the tape around the MLV several times to make sure you fastened it securely to the sink.