TAP007: Pressurisation

I would ask if it has just started, If someone was tampering with the door. Assuming that the conditions are not bad, then perhaps recommend that the cabin crew member put a wet cloth into the door seal where the noise is coming from. I would then consider reducing our cruise altitude slightly perhaps 2000-4000'. If conditions do not look good, I would still recommend a wet cloth in the area but without forcing the cloth into the area then reduce cruise altitude by 4000-6000' I would get regular updates from the cabin and if the situation doesn't improve I'd consider an enroute diversion.