英国Lotus工程公司与德国Blaupunkt轿车音响制造公司合作,研制出一种新颖的轿车抗噪声系统,解决了轿车发动机噪声传入车内的问题。该系统又称作“自调式噪声控制系统”,它通过车内音响系统的扬声器,发出一种与噪声波相位完全相反的声波,填平轿车在行驶过程中发出的噪声波的波峰和波谷。试验证明,这种轿车抗噪声系统在抵销4缸发动机产生的二阶声震方面,效果特别显著。它可以在发动机产生的机械震动转换 British engineering company Lotus and Germany Blaupunkt sedan audio manufacturing company to develop a novel car anti-noise system to solve the problem of car engine noise into the car. The system, also known as a “self-tuning noise control system,” emits a wave opposite to the phase of the noise wave through the speaker of the car’s audio system to fill the peaks and troughs of the noise wave emitted by the car during driving. Experiments show that this car anti-noise system in the offset of 4-cylinder engine generated second-order acoustic shock, the effect is particularly significant. It can convert mechanical vibrations generated in the engine