When you say supply I presume you to mean available supply. All of the available supply during the burn process will be able to be burned into Soniq. The total supply of FUNK will continue to increase according to it's parameters, however after the burn process has completed, none of those new FUNK coins will be able to be converted into Soniq.

Of course that point you could sell newly mined FUNK for LTC and swap the LTC for Soniq sold on the market.