The technology named the transformer's active noise reduction, can significantly reduce the transformer's noise and create an enabling environment which is convenient ventilation and air cooling for the transformer.

You can install the noise barrier which designed by the technology of the transformer's active noise reduction, to reduce the low-frequency noise generated by the transformer, and  controlled the influence distance to less than 70cm, so that, can get a good result which is equivalent to the noise reduction effect of double-layer glass. As shown below: