The main technology of audio zoom is beamforming or spatial filtering. It can change the direction of the audio recording (that is, it senses the direction of the sound source) and adjusts it as n...
Due to Chinese goverment's policy of "Dual Control of Energy Consumption", many factories have been forced to "run for 2 days and stop 5 days". (Some factories even run for 7 days and stop 7 days,...