Tested on volunteers
The technical solution for installing the sound generator for the MEB electric platform is also innovative. “The wide-frequency speaker and electronics are fully integrated into a one-litre box. This design was given the working name OneBox. Above all, the solution made it possible to optimise its weight. For assembly onto the cooling module, three rubber bushes are used to ensure the perfect sound and minimum reverberation from the vehicle’s structure. The first testing in cars showed that the solution was the right one – the sound spread evenly on both sides in the front part of the car and created a pleasant, muffled reverberation in the cockpit,” the head project engineer explains.
Maybe you’re wondering whether this function, which nobody had even thought of a few years ago, is tested on people. “Yes, it is. At first the sound was tested on a selected group of people, and we also demonstrated it to the management. That was followed by measurement inside the cars and checking that the acoustic limit complied with the legislation. It was here that our colleagues from the acoustic lab did some great work. Getting a homologation certificate from an independent certifying institute was a key requirement for launching the new model on the market,” Pavel Orendáš concludes.