Xiaomi is crowdfunding a new smart home product, the Mijia Smart DC Variable Frequency Standing Fan. The gadget has a 16 m (~52 ft) range and can blow air at 6.5 m/s (~21 ft/s). The fan has a night mode which reduces the noise to around 32.75 dBA. You can control the gadget using the Mijia app or Xiao AI voice commands.
https://www.notebookcheck.net/Xiaomi-launches-the-Mijia-Smart-DC-Variable-Frequency-Standing-Fan-with-a-16-m-range.613760.0.html