What Are Active Loudspeakers?

Active directional speaker is a square dance noise "forced stop artifact" invented by Fudan University scientists. The principle of active directional speakers is to control sound waves in a specific area and reduce square noise.

Because the square dance disturbs the people, contradictions occur frequently. On March 29, 2014, the owners' committee of the New Guoguang Building in downtown Wenzhou

The sound emitted by ordinary speakers is transmitted in all directions. To achieve orientation, the diameter of the speakers must be very large. Unlike the principle of traditional speakers, active directional speakers first carry low-frequency sound signals on

Compared with similar products that cost tens of thousands of yuan abroad, the price of domestic "artifact" is only a few hundred to several thousand yuan. In terms of technical indicators, it not only has better sound quality, lower energy consumption, but also is not affected by smog , Storms, dust storms and other extreme weather.

In addition to the noise of the square dance "

Although there are no products in the domestic market, the "artifact" is expected to officially debut at the end of 2014. If it can be listed in large numbers, this may solve the problem of square dance noise that disturbs the people. ^[3]