Mercedes technical guru Paddy Lowe says Formula 1 cars will be louder in 2016 following a change to the technical regulations.
The level of noise produced by a Formula 1 car has been a primary talking point since 1.6 litre V6 power units were introduced at the start of the 2014 campaign.
Under revised 2016 regulations two exhaust tailpipe exits must be used and Lowe is confident that the tweaks will have a positive impact.
"We'll see how much louder, but some measurements have been made in the labs and they have seen a significant increase," Lowe explained in a video produced by Mercedes.
"The reason for that is the wastegate was causing a sort of silencing of the main exhaust pipe, so by removing it from the main exhaust pipe we have less silencing going on of the main flow.
"In the last two years we have had a situation where the main exhaust goes through one tailpipe, we have a wastegate to spill out extra pressure from the exhaust.
"We now have to duct that air separately through an extra tailpipe, and this is intended to make more noise. It will work."
Official pre-season testing will begin at the Circuit de Barcelona-Catalunya on February 22.