Bose wants to use the noise-cancelling technology found in its headphones to block out sounds from outside cars.
The leading audio brand has developed a way to eliminate noise created by rough roads, using accelerometers and microphones to measure vibrations.
Software and algorithms can then calculate an acoustic cancellation signal to be played through the car’s speakers to limit unwanted noise.
Microphones placed inside the cabin monitor residual noise levels, allowing the system to adapt the control signal for optimized performance over different road surfaces, while automatically adjusting over time as the vehicle ages.
At present, many car makers use thick insulation and customised tyres as a way to combat external noise, but Bose says these approaches are not only less effective but can increase the vehicle weight and reduce fuel efficiency.
The move is the company’s latest attempt to help bring down noise levels in vehicles.
Since 2010, it has used its technology to tackle engine sounds.
‘For years, we’ve been asked why we can’t simply adapt our noise-cancelling headphone technology to vehicle cabins for a quieter driving experience,’ said John Feng, manager of Bose’s active sound management solutions team.
‘But we know it’s much more difficult to control noise in a large space like a car cabin compared to the relatively small area around your ears.