toyota crown hybrid ...


Toyota introduces noise-canceling tech on Crown hybrid

Toyota's Crown Hybrid gets brownie points for good gas mileage, but it's apparently a troublemaker in the motor noise department. Instead of merely adding insulation to the bulkhead, Toyota engineered an Active Noise Control system to reduce engine noise inside the cabin. The contraption uses three microphones on the interior of the car to detect engine noise. Based on the frequencies they detect, one speaker in each of the front doors and a woofer on the rear shelf create antiphase signals to cancel out the noise. The canceling is set up to ... Read more →

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