Electric cars is still a concept car in India ,something which no major automobile company has planned to ventured into expect showing it a concept vehicle in auto expos. However the technology behind the electric cars is always intriguing. One such accessory solution provider Harman has come up with Noise Management Solution for these cars.The technology has been invented by R&D firm based in UK called Lotus Engineering and jointly patented by Harman and Lotus. Still not able to understand why Noise Management for electric cars,check out the video
What is HALOsonic Sound Synthesis?
, HALOsonic noise management solutions make this a reality by bringing together HARMAN’s world class expertise in vehicle acoustics and Lotus Engineering’s proven active noise control technologies.
The two parts to HALOsonic’s Electronic Sound Synthesis:
1 – External Sound Synthesis (ESS)
- A specified electronic sound is applied to an external speaker system to improve pedestrian safety
- The synthesised sound, dependent on speed and direction, is projected from speakers at the front and rear of the vehicle, giving an early identifiable warning to pedestrians that the car is approaching (the sound is projected only in the direction of travel, fading away almost instantly once the vehicle has passed)
- A synthetic engine ‘idle’ sound is also produced when the vehicle is switched on and the handbrake is released – i.e. when the vehicle is in a state ready to move.
2 – Internal Sound Synthesis (ISS)
ISS allows sound contouring inside the cabin, enhancing the driving experience by creating speed and throttle-dependent sounds audible through the in-car entertainment system:
- The system delivers audible feedback to drivers even when the engine is almost silent
- The creation of internal sounds is independent of exterior noise levels and hence legislation requirements
