The all-electric BMW i7 is currently undergoing a diverse range of acoustic tests at the automaker’s Research and Innovation Centre FIZ North in Munich, Germany.
This is to ensure drivers experience “the best possible comfort ever realised in a BMW,” said the marque.
The sounds of combustion engines are known to cancel out wind and tyre noises to some extent, but electric cars are not quite so effective at this which means you begin to hear unwanted sounds.
That is why at BMW’s laboratories, engineers check the full range of the vehicle’s sound emissions and immissions.
This includes evaluating the motor and rolling noise, aeroacoustics, and vibrations.
Even the mandatory pedestrian protection sound, along with the artificial motor sound emitted inside the vehicle, are fine-tuned – the latter having been developed with Hollywood film music composer Hans Zimmer.
Those that do not fancy listening to the ‘IconicSounds Electric’ developed in collaboration with Hans Zimmer have the option to drive in ‘characteristic’ silence, says BMW.
Here the automaker has looked to achieve noiseless power delivery of the electric motor.
This includes acoustic optimisation of the electric drive units, a model-specific mount concept and a newly developed noise encapsulation for the electric motors.
Taken together, these measures are designed to ensure maximum acoustic comfort in the interior in different driving situations.
The aeroacoustics of the BMW i7 are perfected in the company’s acoustic wind tunnel.
BMW can create better acoustics for the luxury sedan by developing clear-cut body surfaces, flush door handles and aerodynamically optimised exterior mirrors.
The i7 is due to be unveiled in the coming months along with other model variants of the new BMW 7 series.