LONDON, England - A meeting involving the International Automobile Federation and all 11 Formula 1 team bosses took place in London hd at the top of its agenda cost-cutting... and noise enhancement.Mercedes chief Toto Wolff said one solution to the sound problem in F1 in 2014 could be megaphone exhausts.Together with Ferrari and Renault, the engine-making trio hopes to turn up the controversially low volume of the 2014 1.6 V6 turbos. TRIALS IN BARCELONAWolff said: "We discussed solutions and we at Mercedes also have our approaches and proposals." He said some of the proposed solutions could be tested at the 2014 Spanish GP (May 11). "We will try them on the car in Barcelona to see if they have the effect we are looking for."He said the solutions were focused on engine exhaust: "We have some highly complex solutions within the exhaust system and one such as a 'megaphone' that simply opens up at the end - with all the problems that brings with it."I don't know if the latter is what we should be doing in F1 but nevertheless we will come with our suggestions and approaches and see in Barcelona." Mercedes driver Nico Rosberg suggested a solution could be implemented by the 2014 Monaco GP in May: "We will soon be in Monaco and I think we will hear a different sound there. I think it's important that we do work on it because the noise is part of the show."